View MAX3084E_38639.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

19-1800; Rev 0; 9/00
15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers MAX3080E-MAX3089E
General Description
The MAX3080E-MAX3089E are 15kV electrostatic discharge (ESD)-protected, high-speed transceivers for RS485/RS-422 communication that contain one driver and one receiver. These devices feature fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted. This means that the receiver output will be a logic high if all transmitters on a terminated bus are disabled (high impedance). The MAX3080E/MAX3081E/MAX3082E feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to 115kbps. The MAX3083E/MAX3084E/MAX3085E offer higher driver output slew-rate limits, allowing transmit speeds up to 500kbps. The MAX3086E/MAX3087E/ MAX3088Es' driver slew rates are not limited, making transmit speeds up to 10Mbps possible. The MAX3089E's slew rate is selectable between 115kbps, 500kbps, and 10Mbps by driving a selector pin with a single three-state driver. All devices feature enhanced ESD protection. All transmitter outputs and receiver inputs are protected to 15kV using the Human Body Model. These transceivers typically draw 375A of supply current when unloaded, or when fully loaded with the drivers disabled. All devices have a 1/8-unit-load receiver input impedance that allows up to 256 transceivers on the bus. The MAX3082E/MAX3085E/MAX3088E are intended for halfduplex communications, while the MAX3080E/MAX3081E/ MAX3083E/MAX3084E/MAX3086E/MAX3087E are intended for full-duplex communications. The MAX3089E is selectable between half-duplex and full-duplex operation. It also features independently programmable receiver and transmitter output phase via separate pins.
Features
o ESD Protection for RS-485 I/O Pins 15kV, Human Body Model o True Fail-Safe Receiver While Maintaining EIA/TIA-485 Compatibility o Enhanced Slew-Rate Limiting Facilitates Error-Free Data Transmission (MAX3080E-MAX3085E/MAX3089E) o 1nA Low-Current Shutdown Mode (Except MAX3081E/MAX3084E/MAX3087E) o Pin-Selectable Full/Half-Duplex Operation (MAX3089E) o Phase Controls to Correct for Twisted-Pair Reversal (MAX3089E) o Allow Up to 256 Transceivers on the Bus
Applications
RS-422/RS-485 Communications Level Translators Transceivers for EMI-Sensitive Applications Industrial-Control Local Area Networks
Ordering Information
PART MAX3080ECSD MAX3080ECPD MAX3080EESD MAX3080EEPD TEMP. RANGE 0C to +70C 0C to +70C -40C to +85C -40C to +85C PIN-PACKAGE 14 SO 14 Plastic DIP 14 SO 14 Plastic DIP
Ordering Information continued at end of data sheet.
Selector Guide
Part MAX3080E MAX3081E MAX3082E MAX3083E MAX3084E MAX3085E MAX3086E MAX3087E MAX3088E MAX3089E Half/Full Duplex Full Full Half Full Full Half Full Full Half Selectable Data Rate (Mbps) 0.115 0.115 0.115 0.5 0.5 0.5 10 10 10 Selectable SlewRate Limited Yes Yes Yes Yes Yes Yes No No No Selectable LowPower Shutdown Yes No Yes Yes No Yes Yes No Yes Yes Receiver/ Driver Enable Yes No Yes Yes No Yes Yes No Yes Yes Quiescent Transceivers Current On (A) Bus (A) 375 375 375 375 375 375 375 375 375 375 256 256 256 256 256 256 256 256 256 256 Pin Count 14 8 8 14 8 8 14 8 8 14 IndustryStandard Pinout 75180 75179 75176 75180 75179 75176 75180 75179 75176 75180*
*Pin compatible with 75180, with additional features implemented using pins 1, 6, 8, and 13. ________________________________________________________________ Maxim Integrated Products 1
For free samples and the latest literature, visit www.maxim-ic.com or phone 1-800-998-8800. For small orders, phone 1-800-835-8769.
15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers MAX3080E-MAX3089E
ABSOLUTE MAXIMUM RATINGS
Supply Voltage (VCC) ............................................................+7V Control Input Voltage (RE, DE)...................-0.3V to (VCC + 0.3V) Special Input Voltage (H/F, SRL, TXP, RXP)..............................-0.3V to (VCC + 0.3V) Driver Input Voltage (DI).............................-0.3V to (VCC + 0.3V) Driver Output Voltage (A, B, Y, Z)........................................13V Receiver Input Voltage (A, B) ..............................................13V Receiver Input Voltage, Full Duplex (A, B) ..........................25V Receiver Output Voltage (RO)....................-0.3V to (VCC + 0.3V) Continuous Power Dissipation 8-Pin Plastic DIP (derate 9.09mW/C above +70C) ...727mW 8-Pin SO (derate 5.88mW/C above +70C)................471mW 14-Pin Plastic DIP (derate 10.0mW/C above +70C) ....800mW 14-Pin SO (derate 8.33mW/C above +70C)..............667mW Operating Temperature Ranges MAX308_EC_ _ ...................................................0C to +70C MAX308_EE_ _ ................................................-40C to +85C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability.
DC ELECTRICAL CHARACTERISTICS
(VCC = +5V 5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25C.) (Note 1) PARAMETER DRIVER Differential Driver Output (No Load) Differential Driver Output Change-in-Magnitude of Differential Output Voltage (Note 2) Driver Common-Mode Output Voltage Change-in-Magnitude of Common-Mode Voltage (Note 2) Input High Voltage Input Low Voltage DI Input Hysteresis SRL Input Current Input High Voltage Input Middle Voltage Input Low Voltage SRL Input Current Input Current (A and B) Output Leakage (Y and Z) Full Duplex Driver Short-Circuit Output Current (Note 4) 2 SYMBOL CONDITIONS MIN TYP MAX UNITS
VOD1 VOD2 VOD VOC VOC VIH1 VIL1 VHYS IIN1 IIN2 VIH2 VIM2 VIL2 IIN3 IIN4 IO
Figure 5 Figure 5, R = 50 (RS-422) Figure 5, R = 27 (RS-485) Figure 5, R = 50 or R = 27 Figure 5, R = 50 or R = 27 Figure 5, R = 50 or R = 27 DE, DI, RE, H/F, TXP, RXP DE, DI, RE, H/F, TXP, RXP MAX3080E-MAX3085E, and MAX3089E with SRL = VCC or unconnected DE, DI, RE H/F, TXP, RXP, internal pulldown SRL SRL (Note 3) SRL SRL = VCC SRL = GND (Note 3) DE = GND, VCC = GND or 5.25V DE = GND, VCC = GND or 5.25V -7V VOUT VCC 0V VOUT 12V 0V VOUT VCC VIN = 12V VIN = -7V VIN = 12V VIN = -7V -100 -250 -75 10 VCC - 0.8 0.4VCC 2.0 2.0 1.5
5
V V
0.2 3 0.2
V V V V
0.8 100 2 40 0.6VCC 0.8 75 125 -75 125
V mV A V V V A A A
VOD1
250 25
mA
_______________________________________________________________________________________
15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers
DC ELECTRICAL CHARACTERISTICS (continued)
(VCC = +5V 5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25C.) (Note 1) PARAMETER RECEIVER Receiver Differential Threshold Voltage Receiver Input Hysteresis Receiver Output High Voltage Receiver Output Low Voltage Three-State Output Current at Receiver Receiver Input Resistance Receiver Output Short-Circuit Current SUPPLY CURRENT No load, RE = DI = GND or VCC, SRL = VCC No load, RE = DI = GND or VCC, SRL = GND Supply Current in Shutdown Mode ESD Protection for Y, Z, A, B ISHDN DE = GND, V RE = VCC Human Body Model DE = VCC DE = GND DE = VCC DE = GND 430 375 475 420 0.001 15 900 A 600 1000 A 800 10 A kV VTH VTH VOH VOL IOZR RIN IOSR -7V VCM 12V -200 -125 25 IO = -4mA, VID = -50mV IO = 4mA, VID = -200mV 0.4V VO 2.4V -7V VCM 12V 0V VRO VCC 96 7 95 VCC -1.5 0.4 1 -50 mV mV V V A k mA SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX3080E-MAX3089E
Supply Current
ICC
Note 1: All currents into the device are positive; all currents out of the device are negative. All voltages are referred to device ground unless otherwise noted. Note 2: VOD and VOC are the changes in VOD and VOC, respectively, when the DI input changes state. Note 3: The SRL pin is internally biased to VCC / 2 by a 100k/100k resistor-divider. It is guaranteed to be VCC / 2 if left unconnected. Note 4: Maximum current level applies to peak current just prior to foldback-current limiting; minimum current level applies during current limiting.
_______________________________________________________________________________________
3
15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers MAX3080E-MAX3089E
SWITCHING CHARACTERISTICS--MAX3080E/MAX3081E/MAX3082E, and MAX3089E with SRL = Unconnected
(VCC = +5V 5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25C.) PARAMETER Driver Input-to-Output Driver Output Skew | tDPLH - tDPHL | Driver Rise or Fall Time Maximum Data Rate Driver Enable to Output High Driver Enable to Output Low Driver Disable Time from Low Driver Disable Time from High Receiver Input to Output SYMBOL tDPLH tDPHL tDSKEW tDR, tDF fMAX tDZH tDZL tDLZ tDHZ tRPLH, tRPHL tRSKD tRZL tRZH tRLZ tRHZ tSHDN tDZH(SHDN) tDZL(SHDN) Figures 8 and 10, CL = 100pF, S2 closed Figures 8 and 10, CL = 100pF, S1 closed Figures 8 and 10, CL = 15pF, S1 closed Figures 8 and 10, CL = 15pF, S2 closed Figures 11 and 13; | VID | 2.0V; rise and fall time of VID 15ns Figures 11 and 13; | VID | 2.0V; rise and fall time of VID 15ns Figures 6 and 12, CL = 100pF, S1 closed Figures 6 and 12, CL = 100pF, S2 closed Figures 6 and 12, CL = 100pF, S1 closed Figures 6 and 12, CL = 100pF, S2 closed (Note 5) Figures 8 and 10, CL = 15pF, S2 closed Figures 8 and 10, CL = 15pF, S1 closed Figures 6 and 12, CL = 100pF, S2 closed Figures 6 and 12, CL = 100pF, S1 closed 50 127 3 20 20 20 20 200 CONDITIONS Figures 7 and 9, RDIFF = 54, CL1 = CL2 = 100pF Figures 7 and 9, RDIFF = 54, CL1 = CL2 = 100pF Figures 7 and 9, RDIFF = 54, CL1 = CL2 = 100pF 667 115 3500 3500 100 100 200 30 50 50 50 50 600 6000 6000 3500 3500 MIN 500 500 TYP 2030 2030 -3 1320 MAX 2600 2600 200 2500 UNITS ns ns ns kbps ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns
| tRPLH - tRPHL | Differential
Receiver Skew Receiver Enable to Output Low Receiver Enable to Output High Receiver Disable Time from Low Receiver Disable Time from High Time to Shutdown Driver Enable from Shutdown to Output High Driver Enable from Shutdown to Output Low
Receiver Enable from ShutdowntRZH(SHDN) to-Output High Receiver Enable from Shutdownto-Output Low tRZL(SHDN)
4
_______________________________________________________________________________________
15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers
SWITCHING CHARACTERISTICS--MAX3083E/MAX3084E/MAX3085E, and MAX3089E with SRL = VCC
(VCC = +5V 5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25C.) PARAMETER Driver Input-to-Output Driver Output Skew | tDPLH - tDPHL | Driver Rise or Fall Time Maximum Data Rate Driver Enable to Output High Driver Enable to Output Low Driver Disable Time from Low Driver Disable Time from High Receiver Input to Output SYMBOL tDPLH tDPHL tDSKEW tDR, tDF fMAX tDZH tDZL tDLZ tDHZ tRPLH, tRPHL tRSKD tRZL tRZH tRLZ tRHZ tSHDN tDZH(SHDN) tDZL(SHDN) tRZH(SHDN) tRZL(SHDN) Figures 8 and 10, CL = 100pF, S2 closed Figures 8 and 10, CL = 100pF, S1 closed Figures 8 and 10, CL = 15pF, S1 closed Figures 8 and 10, CL = 15pF, S2 closed Figures 11 and 13; | VID | 2.0V; rise and fall time of VID 15ns Figures 11 and 13; | VID | 2.0V; rise and fall time of VID 15ns Figures 6 and 12, CL = 100pF, S1 closed Figures 6 and 12, CL = 100pF, S2 closed Figures 6 and 12, CL = 100pF, S1 closed Figures 6 and 12, CL = 100pF, S2 closed (Note 5) Figures 8 and 10, CL = 15pF, S2 closed Figures 8 and 10, CL = 15pF, S1 closed Figures 6 and 12, CL = 100pF, S2 closed Figures 6 and 12, CL = 100pF, S1 closed 50 127 3 20 20 20 20 200 CONDITIONS Figures 7 and 9, RDIFF = 54, CL1 = CL2 = 100pF Figures 7 and 9, RDIFF = 54, CL1 = CL2 = 100pF Figures 7 and 9, RDIFF = 54, CL1 = CL2 = 100pF 200 500 2500 2500 100 100 200 30 50 50 50 50 600 4500 4500 3500 3500 MIN 250 250 TYP 720 720 -3 530 MAX 1000 1000 100 750 UNITS ns ns ns kbps ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns
MAX3080E-MAX3089E
| tRPLH - tRPHL | Differential
Receiver Skew Receiver Enable to Output Low Receiver Enable to Output High Receiver Disable Time from Low Receiver Disable Time from High Time to Shutdown Driver Enable from Shutdown-to-Output High Driver Enable from Shutdown-to-Output Low Receiver Enable from Shutdown-to-Output High Receiver Enable from Shutdown-to-Output Low
_______________________________________________________________________________________
5
15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers MAX3080E-MAX3089E
SWITCHING CHARACTERISTICS--MAX3086E/MAX3087E/MAX3088E, and MAX3089E with SRL = GND
(VCC = +5V 5%, TA = TMIN to TMAX, unless otherwise noted. Typical values are at VCC = +5V and TA = +25C.) PARAMETER Driver Input-to-Output Driver Output Skew | tDPLH - tDPHL | Driver Rise or Fall Time Maximum Data Rate Driver Enable to Output High Driver Enable to Output Low Driver Disable Time from Low Driver Disable Time from High Receiver Input-to-Output SYMBOL tDPLH tDPHL tDSKEW tDR, tDF fMAX tDZH tDZL tDLZ tDHZ tRPLH, tRPHL tRSKD tRZL tRZH tRLZ tRHZ tSHDN tDZH(SHDN) tDZL(SHDN) tRZH(SHDN) tRZL(SHDN) Figures 8 and 10, CL = 100pF, S2 closed Figures 8 and 10, CL = 100pF, S1 closed Figures 8 and 10, CL = 15pF, S1 closed Figures 8 and 10, CL = 15pF, S2 closed Figures 11 and 13; | VID | 2.0V; rise and fall time of VID 15ns Figures 11 and 13; | VID | 2.0V; rise and fall time of VID 15ns Figures 6 and 12, CL = 100pF, S1 closed Figures 6 and 12, CL = 100pF, S2 closed Figures 6 and 12, CL = 100pF, S1 closed Figures 6 and 12, CL = 100pF, S2 closed (Note 5) Figures 8 and 10, CL = 15pF, S2 closed Figures 8 and 10, CL = 15pF, S1 closed Figures 6 and 12, CL = 100pF, S2 closed Figures 6 and 12, CL = 100pF, S1 closed 50 106 0 20 20 20 20 200 CONDITIONS Figures 7 and 9, RDIFF = 54, CL1 = CL2 = 100pF Figures 7 and 9, RDIFF = 54, CL1 = CL2 = 100pF Figures 7 and 9, RDIFF = 54, CL1 = CL2 = 100pF 10 150 150 100 100 150 10 50 50 50 50 600 250 250 3500 3500 MIN TYP 34 34 -2.5 14 MAX 60 60 10 25 UNITS ns ns ns Mbps ns ns ns ns ns ns ns ns ns ns ns ns ns ns ns
| tRPLH - tRPHL | Differential
Receiver Skew Receiver Enable to Output Low Receiver Enable to Output High Receiver Disable Time from Low Receiver Disable Time from High Time to Shutdown Driver Enable from Shutdown-to-Output High Driver Enable from Shutdown-to-Output Low Receiver Enable from Shutdown-to-Output High Receiver Enable from Shutdown-to-Output Low
Note 5: The device is put into shutdown by bringing RE high and DE low. If the enable inputs are in this state for less than 50ns, the device is guaranteed not to enter shutdown. If the enable inputs are in this state for at least 600ns, the device is guaranteed to have entered shutdown.
6
_______________________________________________________________________________________
15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers MAX3080E-MAX3089E
Typical Operating Characteristics
(VCC = +5V, TA = +25C, unless otherwise noted.)
NO-LOAD SUPPLY CURRENT vs. TEMPERATURE
500 475 450 425 400 375 350 325 300 -60 -40 -20 0 20 40 60 80 100 TEMPERATURE (C) A DE = GND B A B B: MAX3080E-MAX3085E, MAX3089E WITH SRL = OPEN OR VCC A: MAX3086E/MAX3087E/MAX3088E, MAX3089E WITH SRL = GND DE = VCC
MAX3080/3089 TOC-16
OUTPUT CURRENT vs. RECEIVER OUTPUT LOW VOLTAGE
MAX3080/3089 TOC-2
OUTPUT CURRENT vs. RECEIVER OUTPUT HIGH VOLTAGE
MAX3080/3089 TOC-3
525 NO-LOAD SUPPLY CURRENT (A)
60 50 OUTPUT CURRENT (mA) 40 30 20 10 0 0 1 2 3 4 5 OUTPUT LOW VOLTAGE (V)
30 25 OUTPUT CURRENT (mA) 20 15 10 5 0 0 1 2 3 4 5 OUTPUT HIGH VOLTAGE (V)
SHUTDOWN CURRENT vs. TEMPERATURE
MAX3080/3089 TOC-1
RECEIVER OUTPUT LOW VOLTAGE vs. TEMPERATURE
IRO = 8mA 0.45 OUTPUT LOW VOLTAGE (V) 0.40 0.35 0.30 0.25 0.20 0.15 0.10
MAX3080/3089 TOC-5
RECEIVER OUTPUT HIGH VOLTAGE vs. TEMPERATURE
IRO = 8mA 4.4 OUTPUT VOLTAGE (V) 4.3 4.2 4.1 4.0 3.9 3.8
MAX3080/3089 TOC-4
20 18 SHUTDOWN CURRENT (nA) 16 14 12 10 8 6 4 2 0 -60 -40 -20 0 20 40 60 80
0.50
4.5
100
-60 -40
-20
0
20
40
60
80
100
-60 -40
-20
0
20
40
60
80
100
TEMPERATURE (C)
TEMPERATURE (C)
TEMPERATURE (C)
RECEIVER PROPAGATION DELAY (500kbps MODE) vs. TEMPERATURE
MAX3080/3089 TOC-7
RECEIVER PROPAGATION DELAY (10Mbps MODE) vs. TEMPERATURE
MAX3080/3089 TOC-8
DRIVER PROPAGATION DELAY (115kbps MODE) vs. TEMPERATURE
Rt = 54 2.15 PROPAGATION DELAY (s) 2.10 2.05 2.00 1.95
MAX3080/3089 TOC-9
140 CLOAD = 100pF PROPAGATION DELAY (ns) 135 130
112 110 PROPAGATION DELAY (ns) 108 106 104 102 100 98 96
CLOAD = 100pF
2.20
125
120
115 -60 -40 -20 0 20 40 60 80 100 TEMPERATURE (C)
94 -60 -40 -20 0 20 40 60 80 100 TEMPERATURE (C)
1.90 -60 -40 -20 0 20 40 60 80 100 TEMPERATURE (C)
_______________________________________________________________________________________
7
15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers MAX3080E-MAX3089E
Typical Operating Characteristics (continued)
(VCC = +5V, TA = +25C, unless otherwise noted.)
DRIVER PROPAGATION DELAY (500kbps MODE) vs. TEMPERATURE
MAX3080/3089 TOC-10
DRIVER PROPAGATION DELAY (10Mbps MODE) vs. TEMPERATURE
MAX3080/3089 TOC-11
DRIVER DIFFERENTIAL OUTPUT VOLTAGE vs. TEMPERATURE
Rt = 54 1.89 OUTPUT VOLTAGE (V) 1.88 1.87 1.86 1.85 1.84 1.83
MAX3080/3089 TOC-13
920 880 PROPAGATION DELAY (ns) 840 800 760 720 680 640 600 560 520 -60 -40 -20 0 20 40 60 80 Rt = 54
60 55 PROPAGATION DELAY (ns) 50 45 40 35 30 25 20 Rt = 54
1.90
100
-60 -40 -20
0
20
40
60
80
100
-60 -40 -20
0
20
40
60
80
100
TEMPERATURE (C)
TEMPERATURE (C)
TEMPERATURE (C)
DRIVER OUTPUT CURRENT vs. DIFFERENTIAL OUTPUT VOLTAGE
MAX3080 TOC-12
OUTPUT CURRENT vs. DRIVER OUTPUT LOW VOLTAGE
MAX3080-25
OUTPUT CURRENT vs. DRIVER OUTPUT HIGH VOLTAGE
-90 -80 OUTPUT CURRENT (mA)
MAX3080/3089 TOC-27
100
140 120 OUTPUT CURRENT (mA) 100 80 60 40 20
-100
OUTPUT CURRENT (mA)
10
-70 -60 -50 -40 -30 -20 -10 0
1
0.1
0.01 0 1 2 3 4 5 DIFFERENTIAL OUTPUT VOLTAGE (V)
0 0 2 4 6 8 10 12 OUTPUT LOW VOLTAGE (V)
-8
-6
-4
-2
0
2
4
6
OUTPUT HIGH VOLTAGE (V)
8
_______________________________________________________________________________________
15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers MAX3080E-MAX3089E
Typical Operating Characteristics (continued)
(VCC = +5V, TA = +25C, unless otherwise noted.)
RECEIVER PROPAGATION DELAY MAX3086E/MAX3087E/MAX3088E AND MAX3089E WITH SRL = GND
MAX3080/3089 TYP-18
RECEIVER PROPAGATION DELAY MAX3080E-MAX3085E AND MAX3089E WITH SRL = OPEN OR VCC
MAX3080/3089 TYP-17
VA - VB
2V/div
VA - VB
2V/div
RO
5V/div
RO
5V/div
50ns/div
50ns/div
DRIVER PROPAGATION DELAY MAX3080E/MAX3081E/MAX3082E AND MAX3089E WITH SRL = OPEN
MAX3080/3089 TYP-20
DI
5V/div
VY - VZ
2.5V/div
2s/div
DRIVER PROPAGATION DELAY MAX3083E/MAX3084E/MAX3085E AND MAX3089E WITH SRL = VCC
MAX3080/3089 TYP-21
DRIVER PROPAGATION DELAY MAX3086E/MAX3087E/MAX3088E AND MAX3089E WITH SRL = GND
MAX3080/3089 TYP-22
DI
5V/div
DI
5V/div
VY - VZ
2.5V/div
VY - VZ
2.5V/div
500ns/div
50ns/div
_______________________________________________________________________________________
9
15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers MAX3080E-MAX3089E
Pin Description
PIN MAX3080E MAX3081E MAX3082E MAX3083E MAX3084E MAX3085E MAX3086E MAX3087E MAX3088E FULL-DUPLEX DEVICES HALFDUPLEX DEVICES -- MAX3089E NAME FULLDUPLEX MODE 1 HALFDUPLEX MODE 1 H/F Half/Full-Duplex Selector Pin. Connect H/F to VCC for halfduplex mode; connect to GND or leave unconnected for full-duplex mode. Receiver Output. When RE is low and if A - B -50mV, RO will be high; if A - B -200mV, RO will be low. Receiver Output Enable. Drive RE low to enable RO; RO is high impedance when RE is high. Drive RE high and DE low to enter low-power shutdown mode. Driver Output Enable. Drive DE high to enable driver outputs. These outputs are high impedance when DE is low. Drive RE high and DE low to enter low-power shutdown mode. Driver Input. With DE high, a low on DI forces noninverting output low and inverting output high. Similarly, a high on DI forces non-inverting output high and inverting output low. Slew-Rate-Limit Selector Pin. Connect SRL to GND for 10Mbps communication rate; connect to VCC for 500kbps communication rate. Leave unconnected for 115kbps communication rate. Ground Transmitter Phase. Connect TXP to GND, or leave floating for normal transmitter phase/polarity. Connect to VCC to invert the transmitter phase/polarity. Noninverting Driver Output Noninverting Receiver Input and Noninverting Driver Output* Inverting Driver Output Inverting Receiver Input and Inverting Driver Output* Inverting Receiver Input Receiver Input Resistors* Inverting Receiver Input and Inverting Driver Output FUNCTION
--
--
2
2
1
2
2
RO
3
--
2
3
3
RE
4
--
3
4
4
DE
5
3
4
5
5
DI
--
--
--
6
6
SRL
6, 7 -- 9 -- 10 -- 11 -- --
4 -- 5 -- 6 -- 7 -- --
5 -- -- -- -- -- -- -- 7
7 8 9 -- 10 -- 11 -- --
7 8 -- 9 -- 10 -- 11 --
GND TXP Y Y Z Z B B B
10
______________________________________________________________________________________
15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers
Pin Description (continued)
PIN MAX3080E MAX3081E MAX3082E MAX3083E MAX3084E MAX3085E MAX3086E MAX3087E MAX3088E FULL-DUPLEX DEVICES 12 -- -- 8 -- -- HALFDUPLEX DEVICES -- -- 6 MAX3089E NAME FULLDUPLEX MODE 12 -- -- HALFDUPLEX MODE -- 12 -- A A A Noninverting Receiver Input Receiver Input Resistors* Noninverting Receiver Input and Noninverting Driver Output Receiver Phase. Connect RXP to GND, or leave unconnected for normal transmitter phase/polarity. Connect to VCC to invert the receiver phase/polarity: Positive Supply 4.75V VCC 5.25V Not Connected. Not internally connected. FUNCTION
MAX3080E-MAX3089E
-- 14 1, 8, 13
-- 1 --
-- 8 --
13 14 --
13 14 --
RXP VCC N.C.
*(MAX3089E only) In half-duplex mode, the driver outputs serve as receiver inputs. The full-duplex receiver inputs (A and B) will still have a 1/8-unit load, but are not connected to the receiver.
Function Tables
MAX3080E/MAX3083E/MAX3086E
TRANSMITTING INPUTS RE X X 0 1 DE 1 1 0 0 DI 1 0 X X Z 0 1 High-Z Shutdown RECEIVING INPUTS RECEIVING INPUTS RE 0 0 0 1 1 DE X X X 1 0 A-B -0.05V -0.2V Open/shorted X X OUTPUT RO 1 0 1 High-Z Shutdown A-B -0.05V -0.2V Open/shorted OUTPUT RO 1 0 1 OUTPUTS Y 1 0 High-Z INPUT DI 1 0 Z 0 1
MAX3081E/MAX3084E/MAX3087E
TRANSMITTING OUTPUTS Y 1 0
X = Don't care Shutdown mode, driver and receiver outputs high impedance
______________________________________________________________________________________
11
15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers MAX3080E-MAX3089E
Function Tables (continued)
MAX3082E/MAX3085E/MAX3088E
TRANSMITTING INPUTS RE X X 0 1 DE 1 1 0 0 DI 1 0 X X 0 1 High-Z Shutdown OUTPUTS B/Z A/Y 1 0 High-Z TXP 0 0 1 1 X X RECEIVING INPUTS RE 0 0 0 1 1 DE X X X 1 0 A-B -0.05V -0.2V Open/shorted X X OUTPUT RO 1 0 1 High-Z Shutdown H/F 0 0 0 0 1 1 1 1 0 1 0 1 X X RXP 0 0 1 1 0 0 1 1 0 0 1 1 X X RE 0 0 0 0 0 0 0 0 0 0 0 0 1 1 DE X X X X 0 0 0 0 X 0 X 0 1 0 RECEIVING INPUTS A-B -0.05V -0.2V -0.05V -0.2V X X X X Open/ shorted X Open/ shorted X X X Y-Z X X X X -0.05V -0.2V -0.05V -0.2V X Open/ shorted X Open/ shorted X X OUTPUT RO 1 0 0 1 1 0 0 1 1 1 0 0 High-Z Shutdown X X X X 0 1 RE
MAX3089E
TRANSMITTING INPUTS DE 1 1 1 1 0 0 DI 1 0 1 0 X X OUTPUTS Z 0 1 1 0 High-Z Y 1 0 0 1 High-Z
Shutdown
X = Don't care Shutdown mode, driver and receiver outputs high impedance
12
______________________________________________________________________________________
15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers MAX3080E-MAX3089E
TOP VIEW
DE 4 N.C. 1 RO 2 RE 3 DE 4 DI 5 GND 6 GND 7 D R 14 VCC 13 N.C. 12 A 11 B 10 Z 9 8 Y N.C. NC 1, 8, 13 3 6, 7 GND RE GND DE RO 2 DI 5 VCC 14 9 0.1F VCC RE
Y
MAX3080E MAX3083E MAX3086E
Rt
D
10 Z 12 A Rt 11 B
R
RO
R
D
DI
DIP/SO
Figure 1. MAX3080E/MAX3083E/MAX3086E Pin Configuration and Typical Full-Duplex Operating Circuit TOP VIEW
VCC 1 5Y VCC 1 RO 2 DI 3 GND 4 D R 8 7 6 5 A B Z Y RO 8A 2 Rt 7 B DI 3
0.1F
VCC
MAX3081E MAX3084E MAX3087E
Rt 6Z
D
R
RO
R
D
DI
DIP/SO
4 GND GND
Figure 2. MAX3081E/MAX3084E/MAX3087E Pin Configuration and Typical Full-Duplex Operating Circuit TOP VIEW
0.1F 1 2 3 4 D 8 R 7B Rt 6A 5 GND VCC
MAX3082E MAX3085E MAX3088E
B Rt A R
DE D DI
RO
1
R
8 7 6
VCC B A GND
RO RE DE DI
RE 2 DE 3 DI 4 D
5
RO
DIP/SO
RE NOTE: PIN LABELS Y AND Z ON TIMING, TEST, AND WAVEFORM DIAGRAMS. REFER TO PINS A AND B WHEN DE IS HIGH.
Figure 3. MAX3082E/MAX3085E/MAX3088E Pin Configuration and Typical Half-Duplex Operating Circuit ______________________________________________________________________________________ 13
15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers MAX3080E-MAX3089E
Detailed Description
The MAX3080E-MAX3089E high-speed transceivers for RS-485/RS-422 communication contain one driver and one receiver. These devices feature fail-safe circuitry, which guarantees a logic-high receiver output when the receiver inputs are open or shorted, or when they are connected to a terminated transmission line with all drivers disabled (see the Fail-Safe section). The MAX3080E/MAX3081E/MAX3082E feature reduced slew-rate drivers that minimize EMI and reduce reflections caused by improperly terminated cables, allowing error-free data transmission up to 115kbps (see the Reduced EMI and Reflections section). The MAX3083E/MAX3084E/MAX3085E offer higher driver output slew-rate limits, allowing transmit speeds up to 500kbps. The MAX3086E/MAX3087E/MAX3088E's driver slew rates are not limited, making transmit speeds up to 10Mbps possible. The MAX3089E's slew rate is selectable between 115kbps, 500kbps, and 10Mbps by driving a selector pin with a three-state driver. The MAX3082E/MAX3085E/MAX3088E are half-duplex transceivers, while the MAX3080E/MAX3081E/ MAX3083E/MAX3084E/MAX3086E/MAX3087E are fullduplex transceivers. The MAX3089E is selectable between half- and full-duplex communication by driving a selector pin high or low, respectively. All of these parts operate from a single +5V supply. Drivers are output short-circuit current limited. Thermal shutdown circuitry protects drivers against excessive power dissipation. When activated, the thermal shutdown circuitry places the driver outputs into a highimpedance state. the termination. With the receiver thresholds of the MAX3080E family, this results in a logic high with a 50mV minimum noise margin. Unlike previous fail-safe devices, the -50mV to -200mV threshold complies with the 200mV EIA/TIA-485 standard.
MAX3089E Programming
The MAX3089E has several programmable operating modes. Transmitter rise and fall times are programmable between 2500ns, 750ns, and 25ns, resulting in maximum data rates of 115kbps, 500kbps, and 10Mbps, respectively. To select the desired data rate, drive SRL to one of three possible states by using a three-state driver, by connecting it to VCC or GND, or by leaving it unconnected. For 115kbps operation, set the three-state device in high-impedance mode or leave SRL unconnected. For 500kbps operation, drive SRL high or connect it to VCC. For 10Mbps operation, drive SRL low or connect it to GND. SRL can be changed during operation without interrupting data communications. Occasionally, twisted-pair lines are connected backward from normal orientation. The MAX3089E has two pins that invert the phase of the driver and the receiver to correct for this problem. For normal operation, drive TXP and RXP low, connect them to ground, or leave them unconnected (internal pulldown). To invert the driver phase, drive TXP high or connect it to V CC. To invert the receiver phase, drive RXP high or connect it to V CC . Note that the receiver threshold is positive when RXP is high. The MAX3089E can operate in full- or half-duplex mode. Drive the H/F pin low, leave it unconnected (internal pulldown), or connect it to GND for full-duplex operation, and drive it high for half-duplex operation. In full-duplex mode, the pin configuration of the driver and receiver is the same as that of a MAX3080E (Figure 4). In half-duplex mode, the receiver inputs are switched to the driver outputs, connecting outputs Y and Z to inputs A and B, respectively. In half-duplex mode, the internal full-duplex receiver input resistors are still connected to pins 11 and 12.
Receiver Input Filtering
The receivers of the MAX3080E-MAX3085E, and the MAX3089E when operating in 115kbps or 500kbps mode, incorporate input filtering in addition to input hysteresis. This filtering enhances noise immunity with differential signals that have very slow rise and fall times. Receiver propagation delay increases by 20% due to this filtering.
Fail-Safe
The MAX3080E family guarantees a logic-high receiver output when the receiver inputs are shorted or open, or when they are connected to a terminated transmission line with all drivers disabled. This is done by setting the receiver threshold between -50mV and -200mV. If the differential receiver input voltage (A-B) is greater than or equal to -50mV, RO is logic high. If A-B is less than or equal to -200mV, RO is logic low. In the case of a terminated bus with all transmitters disabled, the receiver's differential input voltage is pulled to 0V by
14
15kV ESD Protection
As with all Maxim devices, ESD-protection structures are incorporated on all pins to protect against electrostatic discharges encountered during handling and assembly. The driver outputs and receiver inputs of the MAX3080E-MAX3089E family have extra protection against static electricity. Maxim's engineers have developed state-of-the-art structures to protect these pins against ESD of 15kV without damage.
______________________________________________________________________________________
15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers MAX3080E-MAX3089E
VCC RE
MAX3089E
A RD
TOP VIEW
B H/F 1 14 V CC 13 RXP RXP RO 2 RE 3 DE 4 DI 5 SRL 6 GND 7
MAX3089E
12 A 11 B 10 Z 9 8 Y TXP Y DI TXP H/F
Z
DIP/SO
NOTE: SWITCH POSITIONS INDICATED FOR H/F = GND
GND
DE
SRL
Figure 4. MAX3089E Pin Configuration and Functional Diagram
Y R VOD R Z VOC S2 TEST POINT RECEIVER OUTPUT CRL 15pF 1k VCC S1 1k
Figure 5. Driver DC Test Load
Figure 6. Receiver Enable/Disable Timing Test Load
The ESD-protected pins are tested with reference to the ground pin in a powered-down condition. They are tested to 15kV using the Human Body Model. ESD Test Conditions ESD performance depends on a variety of conditions. Contact Maxim for a reliability report that documents test setup, test methodology, and test results. Human Body Model Figure 14a shows the Human Body Model, and Figure 14b shows the current waveform it generates when dis-
charged into a low impedance. This model consists of a 100pF capacitor charged to the ESD voltage of interest, which is then discharged into the test device through a 1.5k resistor. Machine Model The Machine Model for ESD tests all pins using a 200pF storage capacitor and zero discharge resistance. The objective is to emulate the stress caused when I/O pins are contacted by handling equipment during test and assembly. All pins require this protec-
______________________________________________________________________________________
15
15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers MAX3080E-MAX3089E
3V DE DI Y VOD2 Z CL2
CL1 RDIFF OUTPUT UNDER TEST CL S2 500 S1 VCC
Figure 7. Driver Timing Test Circuit
Figure 8. Driver Enable and Disable Timing Test Load
5V DI 0 1.5V tDPLH tDPHL 1.5V 1/2 VO DE
5V 1.5V 0 tDZL(SHDN), tDZL Y, Z VO VOL VDIFF = V (Y) - V (Z) 90% 90% 10% Y, Z 2.3V 0 tDZH(SHDN), tDZH tDHZ 2.3V OUTPUT NORMALLY LOW OUTPUT NORMALLY HIGH VOH -0.5V VOL +0.5V tDLZ 1.5V
Z Y 1/2 VO VO VDIFF 0 -VO 10% tDR
tDF tSKEW = | tDPLH - tDPHL |
Figure 9. Driver Propagation Delays
Figure 10. Driver Enable and Disable Times (Except MAX3081E/MAX3084E/MAX3087E)
5V RE 0 RO VOH VOL A B 1.5V tRPHL INPUT RO 0 tRZH(SHDN), tRZH tRHZ 1.5V OUTPUT tRPLH 1.5V VCC RO tRZL(SHDN), tRZL tRLZ VOL + 0.5V 1.5V 1.5V
1V -1V
1.5V OUTPUT NORMALLY LOW OUTPUT NORMALLY HIGH
VOH - 0.5V
Figure 11. Receiver Propagation Delays
Figure 12. Receiver Enable and Disable Times (Except MAX3081E/MAX3084E/MAX3087E)
16
______________________________________________________________________________________
15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers MAX3080E-MAX3089E
RC 1M CHARGE-CURRENT LIMIT RESISTOR RD 1500 DISCHARGE RESISTANCE DEVICE UNDER TEST
B ATE VID A RR RECEIVER OUTPUT
HIGHVOLTAGE DC SOURCE Cs 100pF STORAGE CAPACITOR
Figure 13. Receiver Propagation Delay Test Circuit
Figure 14a. Human Body ESD Test Model
IP 100% 90% AMPERES 36.8% 10% 0 0 tRL TIME
Ir
PEAK-TO-PEAK RINGING (NOT DRAWN TO SCALE)
20dB/div
tDL CURRENT WAVEFORM
0Hz
100kHz/div
1MHz
Figure 14b. Human Body Current Waveform
Figure 15. Driver Output Waveform and FFT Plot of MAX3086E/MAX3087E/MAX3088E, and MAX3089E with SRL = GND, Transmitting a 20kHz Signal
MAX3080/3089 FIG-15 MAX3080/3089 FIG-16
A
A
20dB/div
B
20dB/div
B
0Hz
100kHz/div
1MHz
0Hz
100kHz/div
1MHz
Figure 16. Driver Output Waveform and FFT Plot of MAX3083E/MAX3084E/MAX3085E, and MAX3089E with SRL = VCC, Transmitting a 20kHz Signal
Figure 17. Driver Output Waveform and FFT Plot of MAX3080E/MAX3081E/MAX3082E, and MAX3089E with SRL = Unconnected, Transmitting a 20kHz Signal 17
______________________________________________________________________________________
MAX3080/3089 FIG-14
15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers MAX3080E-MAX3089E
MAX3080/3089 FIG-18
MAX3080E/MAX3081E/MAX3083E/ MAX3084E/MAX3086E/MAX3087E/ MAX3089E (FULL DUPLEX)
A RO RE DE Z DI 120 Y
DI
5V/div
R
120 B
DATA IN
VA - VB 1V/div
D
DATA OUT
RO 5V/div
NOTE: RE AND DE ON MAX3080E/MAX3083E/MAX3086E/MAX3089E ONLY. Figure 18. Line Repeater for MAX3080E/MAX3081E/MAX3083E/ MAX3084E/MAX3086E/MAX3087E, and MAX3089E in Full-Duplex Mode
5s/div
Figure 19. MAX3080E/MAX3081E/MAX3082E, and MAX3089E with SRL = Unconnected, System Differential Voltage at 50kHz Driving 4000ft of Cable
during test and assembly. All pins require this protection, not just RS-485 inputs and outputs.
Applications Information
256 Transceivers on the Bus
The standard RS-485 receiver input impedance is 12k (one-unit load), and the standard driver can drive up to 32 unit loads. The MAX3080E family of transceivers have a 1/8-unit-load receiver input impedance (96k), allowing up to 256 transceivers to be connected in parallel on one communication line. Any combination of these devices and/or other RS-485 transceivers with a total of 32 unit loads or less can be connected to the line.
Figure 17's high-frequency harmonic components are even lower. In general, a transmitter's rise time relates directly to the length of an unterminated stub, which can be driven with only minor waveform reflections. The following equation expresses this relationship conservatively: Length = tRISE / (10 x 1.5ns/ft) where tRISE is the transmitter's rise time. For example, the MAX3080E's rise time is typically 1320ns, which results in excellent waveforms with a stub length up to 90 feet. A system can work well with longer unterminated stubs, even with severe reflections, if the waveform settles out before the UART samples them.
Reduced EMI and Reflections
The MAX3080E-MAX3085E, and MAX3089E with SRL = VCC or unconnected, are slew-rate limited, minimizing EMI and reducing reflections caused by improperly terminated cables. Figure 15 shows the driver output waveform and its Fourier analysis of a 20kHz signal transmitted by a MAX3086E/MAX3087E/MAX3088E, and MAX3089E with SRL = GND. High-frequency harmonic components with large amplitudes are evident. Figure 16 shows the same signal displayed for a MAX3083E/MAX3084E/MAX3085E, and MAX3089E with SRL = VCC), transmitting under the same conditions. Figure 16's high-frequency harmonic components are much lower in amplitude, compared with Figure 15's, and the potential for EMI is significantly reduced. Figure 17 shows the same signal displayed for a MAX3080E/ MAX3081E/MAX3082E, and MAX3089E with SRL = unconnected, transmitting under the same conditions.
18
Low-Power Shutdown Mode (Except MAX3082E/MAX3085E/MAX3088E)
Low-power shutdown mode is initiated by bringing both RE high and DE low. In shutdown, the devices typically draw only 1nA of supply current. RE and DE may be driven simultaneously; the parts are guaranteed not to enter shutdown if RE is high and DE is low for less than 50ns. If the inputs are in this state for at least 600ns, the parts are guaranteed to enter shutdown. Enable times t ZH and t ZL in the Switching Characteristics tables assume the part was not in a lowpower shutdown state. Enable times t ZH(SHDN) and tZL(SHDN) assume the parts were shut down. It takes drivers and receivers longer to become enabled from low-power shutdown mode (tZH(SHDN), tZH(SHDN)) than from driver/receiver-disable mode (tZH, tZL).
______________________________________________________________________________________
15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers MAX3080E-MAX3089E
MAX3080/3089 FIG-19 MAX3080/3089 FIG-20
DI
5V/div
DI
5V/div
VA - VB
1V/div
VA - VB
1V/div
RO
5V/div
RO
5V/div
2s/div
1s/div
Figure 20. MAX3083E/MAX3084E/MAX3085E, and MAX3089E with SRL = VCC, System Differential Voltage at 50kHz Driving 4000ft of Cable
120 DI B
Figure 21. MAX3086E/MAX3087E/MAX3088E, and MAX3089E with SRL = GND, System Differential Voltage at 200kHz Driving 4000ft of Cable
120 B DE
D
DE RO RE A B A B A A
D
DI
R R MAX3082E MAX3085E MAX3088E MAX3089E (HALF-DUPLEX) D D R
R
RO RE
DI
DE
RO RE
DI
DE
RO RE
Figure 22. Typical Half-Duplex RS-485 Network
Driver Output Protection
Two mechanisms prevent excessive output current and power dissipation caused by faults or by bus contention. The first, a foldback current limit on the output stage, provides immediate protection against short circuits over the whole common-mode voltage range (see Typical Operating Characteristics). The second, a thermal shutdown circuit, forces the driver outputs into a high-impedance state if the die temperature becomes excessive.
Typical Applications
The MAX3082E/MAX3085E/MAX3088E/MAX3089E transceivers are designed for bidirectional data communications on multipoint bus transmission lines. Figures 22 and 23 show typical network applications circuits. These parts can also be used as line repeaters, with cable lengths longer than 4000 feet, as shown in Figure 18. To minimize reflections, the line should be terminated at both ends in its characteristic impedance, and stub lengths off the main line should be kept as short as possible. The slew-rate-limited MAX3082E/MAX3085E, and the two modes of the MAX3089E, are more tolerant of imperfect termination.
Line Length vs. Data Rate
The RS-485/RS-422 standard covers line lengths up to 4000 feet. For line lengths greater than 4000 feet, use the repeater application shown in Figure 18. Figures 19, 20, and 21 show the system differential voltage for the parts driving 4000 feet of 26AWG twistedpair wire at 110kHz into 120 loads.
______________________________________________________________________________________
19
15kV ESD-Protected, Fail-Safe, High-Speed (10Mbps), Slew-Rate-Limited RS-485/RS-422 Transceivers MAX3080E-MAX3089E
A RO RE DE Z DI B 120 Y Y Z B A Y Z B A 120 A Y 120 B 120 Z DE RE RO
R
D
DI
D
R
R D D
R MAX3080E MAX3081E MAX3083E MAX3084E MAX3086E MAX3087E MAX3089E (FULL-DUPLEX)
DI
DE RE RO
DI
DE RE RO
NOTE: RE AND DE ON MAX3080E/MAX3083E/MAX3086E/MAX3089E ONLY. Figure 23. Typical Full-Duplex RS-485 Network
Ordering Information (continued)
PART MAX3081ECSA MAX3081ECPA MAX3081EESA MAX3081EEPA MAX3082ECSA MAX3082ECPA MAX3082EESA MAX3082EEPA MAX3083ECSD MAX3083ECPD MAX3083EESD MAX3083EEPD MAX3084ECSA MAX3084ECPA MAX3084EESA MAX3084EEPA MAX3085ECSA MAX3085ECPA MAX3085EESA MAX3085EEPA TEMP. RANGE 0C to +70C 0C to +70C -40C to +85C -40C to +85C 0C to +70C 0C to +70C -40C to +85C -40C to +85C 0C to +70C 0C to +70C -40C to +85C -40C to +85C 0C to +70C 0C to +70C -40C to +85C -40C to +85C 0C to +70C 0C to +70C -40C to +85C -40C to +85C PIN-PACKAGE 8 SO 8 Plastic DIP 8 SO 8 Plastic DIP 8 SO 8 Plastic DIP 8 SO 8 Plastic DIP 14 SO 14 Plastic DIP 14 SO 14 Plastic DIP 8 SO 8 Plastic DIP 8 SO 8 Plastic DIP 8 SO 8 Plastic DIP 8 SO 8 Plastic DIP PART MAX3086ECSD MAX3086ECPD MAX3086EESD MAX3086EEPD MAX3087ECSA MAX3087ECPA MAX3087EESA MAX3087EEPA MAX3088ECSA MAX3088ECPA MAX3088EESA MAX3088EEPA MAX3089ECSD MAX3089ECPD MAX3089EESD MAX3089EEPD TEMP. RANGE 0C to +70C 0C to +70C -40C to +85C -40C to +85C 0C to +70C 0C to +70C -40C to +85C -40C to +85C 0C to +70C 0C to +70C -40C to +85C -40C to +85C 0C to +70C 0C to +70C -40C to +85C -40C to +85C PIN-PACKAGE 14 SO 14 Plastic DIP 14 SO 14 Plastic DIP 8 SO 8 Plastic DIP 8 SO 8 Plastic DIP 8 SO 8 Plastic DIP 8 SO 8 Plastic DIP 14 SO 14 Plastic DIP 14 SO 14 Plastic DIP
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
20
____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 Printed USA is a registered trademark of Maxim Integrated Products.
(c) 2000 Maxim Integrated Products
This datasheet has been download from: www..com Datasheets for electronics components.

▲Up To Search▲

Price & Availability of MAX3084E

	To Download MAX3084E Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .