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IDT74LVCC3245A CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
INDUSTRIAL TEMPERATURE RANGE
CMOS OCTAL BUS IDT74LVCC3245A TRANSCEIVER WITH ADJUSTABLE OUTPUT VOLTAGE, 3-STATE OUTPUTS, 5 VOLT TOLERANT I/O
* * * * * * * *
FEATURES:
0.5 MICRON CMOS Technology VCCA = 2.3V to 3.6V VCCB = 3V to 5.5V CMOS power levels (0.4 W typ. static) Rail-to-rail output swing for increased noise margin All inputs, outputs, and I/O are 5V tolerant Supports hot insertion Available in SOIC, SSOP, QSOP, and TSSOP packages
DRIVE FEATURES:
* High Output Drivers: 24mA * Reduced system switching noise
APPLICATIONS:
The LVCC3245A is manufactured using advanced dual metal CMOS technology. This 8-bit (octal) noninverting bus transceiver contains two separate supply rails. The B port is designed to track VCCB, which accepts voltages from 3V to 5.5V, and the A port is designed to track VCCA, which operates at 2.3V to 3.6V. This allows for translation from a 3.3V to a 5V system environment and vice-versa, or from a 2.5V to a 3.3V system environment, and vice-versa. This LVCC3245A is ideal for asynchronous communication between two data buses (A and B). The device transmits data from A to B or from B to A, depending on the logic level at the direction-control (DIR) input. The output-enable (OE) input can be used to disable the device so the buses are effectively isolated. The LVCC3245A has been designed with a 24mA output driver. This driver is capable of driving a moderate to heavy load while maintaining speed performance.
DESCRIPTION:
* 5V and 3.3V mixed voltage systems * Data communication and telecommunication systems
FUNCTIONAL BLOCK DIAGRAM
DIR
2 22
OE
A1
3 21 4 20
B1
A2
B2
2.3V to 3.6V Port
A3
5 19 6 18 7 17 8 16
B3
3V to 5.5V Port
A4
B4
A5
B5
A6
B6
A7
9 15 10
B7
A8
14
B8
The IDT logo is a registered trademark of Integrated Device Technology, Inc.
INDUSTRIAL TEMPERATURE RANGE
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(c) 2000 Integrated Device Technology, Inc.
JULY 2000
DSC-4704/2
IDT74LVCC3245A CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
INDUSTRIAL TEMPERATURE RANGE
PIN CONFIGURATION
ABSOLUTE MAXIMUM RATINGS FOR VCCB OR VCCB(1)
Symbol Description Terminal Voltage with Respect to GND Storage Temperature DC Output Current Continuous Clamp Current, VI < 0 or VO < 0 Continuous Current through each VCC or GND Max -0.5 to +6 -65 to +150 -50 to +50 -50 100 Unit V C mA mA mA
(2.3V to 3.6V) VCCA DIR A1 A2 A3 A4 A5 A6 A7 A8 GND GND
1 2 3 4 5 6 7 8 9 10 11 12
24 23 22 21 20 19 18 17 16 15 14 13
VCCB (3V to 5.5V) NC OE B1 B2 B3 B4 B5 B6 B7 B8 GND
VTERM TSTG IOUT IIK IOK ICC ISS
NOTE: 1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS may cause permanent damage to the device. This is a stress rating only and functional operation of the device at these or any other conditions above those indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect reliability.
CAPACITANCE (TA = +25C, F = 1.0MHz)
Symbol CIN CI/O Parameter(1) Input Capacitance I/O Port Capacitance Conditions VIN = 0V VIN = 0V Typ. 4.5 11 Unit pF pF
SOIC/ SSOP/ QSOP/ TSSOP TOP VIEW
NOTE: 1. As applicable to the device type.
PIN DESCRIPTION
Pin Names OE DIR Ax Bx NC Description Output Enable Input (Active LOW) Direction Control Input Port A Inputs or 3-State Outputs Port B Inputs or 3-State Outputs No Internal Connection
FUNCTION TABLE(1)
Inputs OE L L H
NOTE: 1. H = HIGH Voltage Level L = LOW Voltage Level X = Don't Care
DIR L H X
Outputs Bus B Data to Bus A Bus A Data to Bus B High Z state
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IDT74LVCC3245A CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
INDUSTRIAL TEMPERATURE RANGE
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE (A PORT)
Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = -40C to +85C, VCCA = 2.3V to 3.6V(1)
Symbol VIH VIL IIH IIL IOZH IOZL IOFF VH ICCL ICCH ICCZ ICC High Impedance Output Current (3-State Output pins) Input/Output Power Off Leakage Input Hysteresis Quiescent Power Supply Current VCCA = 0V, VIN or VO 5.5V VCCA = 3.3V VCCA = 3.6V VIN = GND or VCC -- -- -- -- 100 -- 50 -- 50 A mV A VCCA = 3.6V VO = VCCA or GND -- -- 5 A Parameter Input HIGH Voltage Level Input LOW Voltage Level Input Leakage Current VCCA = 3.6V VOB 0.1V VOB VCCB - 0.1V Test Conditions VCCA = 2.3V, VCCB = 3V VCCA = 2.7V to 3.6V VCCA = 2.3V, VCCB = 3V VCCA = 2.7V to 3.6V VI = 0 to 5.5V Min. 1.7 2 -- -- -- Typ.(2) -- -- -- -- -- Max. -- -- 0.7 0.8 1 A V Unit V
Quiescent Power Supply Current Variation
One input at VCCA - 0.6, other inputs at VCCA or GND
--
--
500
A
NOTES: 1. VCCB = 3V to 5.5V. 2. Typical values are at VCC = 3.3V, +25C ambient. 3. This applies in the disabled state only.
DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE (B PORT)
Following Conditions Apply Unless Otherwise Specified: Operating Condition: TA = -40C to +85C, VCCB = 3V to 5.5V(1)
Symbol VIH VIL IIH IIL IOZH IOZL IOFF VH ICCL ICCH ICCZ ICC High Impedance Output Current (3-State Output pins) Input/Output Power Off Leakage Input Hysteresis Quiescent Power Supply Current VCCB = 0V, VIN or VO 5.5V VCCB = 3.3V VCCB = 3.6V VCCB = 5.5V VIN = GND or VCC -- -- -- -- -- -- 100 -- -- -- 50 -- 50 80 1.5 A mV A VCCB = 3.6V VO = VCCB or GND -- -- 5 A Parameter Input HIGH Voltage Level Input LOW Voltage Level Input Leakage Current VCCB = 3.6V VOA 0.1V VOA VCCA - 0.1V Test Conditions VCCB = 3V to 3.6V VCCB = 5.5V VCCB = 3V to 3.6V VCCB = 5.5V VI = 0 to 5.5V Min. 2 3.85 -- -- -- Typ.(2) -- -- -- -- -- Max. -- -- 0.8 1.65 1 A V Unit V
Quiescent Power Supply Current Variation
One input at VCCB - 2.1 other inputs at VCCB or GND
mA
NOTES: 1. VCCA = 2.3V to 3.6V. 2. Typical values are at VCC = 3.3V, +25C ambient. 3. This applies in the disabled state only.
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IDT74LVCC3245A CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
INDUSTRIAL TEMPERATURE RANGE
OUTPUT DRIVE CHARACTERISTICS, VCCA = 2.3V TO 3.6V (A PORT)
Symbol VOHA Parameter Output HIGH Voltage (B port to A port) VCCA = 3V VCCA = 2.3V VCCA = 2.7V VCCA = 3V VCCA = 3V VCCA = 2.7V VOLA Output LOW Voltage (B port to A port) VCCA = 3V VCCA = 2.3V VCCA = 2.7V VCCA = 3V VCCA = 2.7V Test Conditions(1) VCCB = 3V VCCB = 3V VCCB = 3V VCCB = 3V VCCB = 3V VCCB = 4.5V VCCB = 3V VCCB = 3V VCCB = 3V VCCB = 3V VCCB = 4.5V IOL = 0.1mA IOL = 8mA IOL = 12mA IOL = 24mA IOH = - 24mA IOH = - 0.1mA IOH = - 8mA IOH = - 12mA Min. 2.9 2 2.2 2.4 2.2 2 -- -- -- -- -- Max. -- -- -- -- -- -- 0.1 0.6 0.5 0.5 0.5 V Unit V
NOTE: 1. VIH and VIL must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the appropriate VCC range. TA = - 40C to + 85C, VCCB = 3V to 5.5V.
OUTPUT DRIVE CHARACTERISTICS, VCCB = 3V TO 5.5V (B PORT)
Symbol VOHB Parameter Output HIGH Voltage (A port to B port) VCCB = 3V VCCB = 3V VCCB = 3V VCCB = 3V VCCB = 4.5V VOLB Output LOW Voltage (A port to B port) VCCB = 3V VCCB = 3V VCCB = 3V VCCB = 4.5V Test Conditions(1) VCCA = 3V VCCA = 2.3V VCCA = 2.7V VCCA = 3V VCCA = 2.7V VCCA = 3V VCCA = 2.3V VCCA = 3V VCCA = 3V IOL = 0.1mA IOL = 12mA IOL = 24mA IOH = - 24mA IOH = - 0.1mA IOH = - 12mA Min. 2.9 2.4 2.4 2.2 3.2 -- -- -- -- Max. -- -- -- -- -- 0.1 0.4 0.5 0.5 V Unit V
NOTE: 1. VIH and VIL must be within the min. or max. range shown in the DC ELECTRICAL CHARACTERISTICS OVER OPERATING RANGE table for the appropriate VCC range. TA = - 40C to + 85C, VCCA = 2.3V to 3.6V.
OPERATING CHARACTERISTICS, TA = 25C
VCCA = 3.3V, VCCB = 5V Symbol CPD CPD Parameter Power Dissipation Capacitance per Transceiver Outputs enabled A to B Power Dissipation Capacitance per Transceiver Outputs disabled B to A Test Conditions CL = 0pF, f = 10Mhz Typical 38 36.5 Unit pF
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IDT74LVCC3245A CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
INDUSTRIAL TEMPERATURE RANGE
SWITCHING CHARACTERISTICS(1)
VCCA = 2.5V 0.2V VCCB = 3.3V 0.3V Symbol tPHL tPLH tPHL tPLH tPZL tPLZ tPZL tPLZ tPLZ tPHZ tPLZ tPHZ Parameter Propagation Delay Ax to Bx Propagation Delay Bx to Ax Output Enable Time OE to Bx Output Enable Time OE to Ax Output Disable Time OE to Ax Output Disable Time OE to Bx Min. 1 1 1 1 1 1 1 1 1 1 1 1 Max. 9.4 9.1 11.2 9.9 13 12.8 14.5 12.9 7.1 6.9 8.8 8.9 VCCA = 2.7V to 3.6V VCCB = 5V 0.5V VCCB = 3.3V 0.3V Min. 1 1 1 1 1 1 1 1 1 1 1 1 Max. 6 5.3 5.8 7 8.1 8.4 9.2 9.5 5.5 7.8 7.3 7 Min. 1 1 1 1 1 1 1 1 1 1 1 1 Max. 7.1 7.2 6.4 7.6 9.2 9.9 9.7 9.5 6.6 6.9 7.5 7.9 ns ns ns ns ns Unit ns
NOTE: 1. See TEST CIRCUITS AND WAVEFORMS. TA = - 40C to + 85C.
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IDT74LVCC3245A CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
INDUSTRIAL TEMPERATURE RANGE
LOAD CIRCUIT AND VOLTAGE WAVEFORMS PARAMETER MEASUREMENT INFORMATION (A PORT)
VCCA = 2.5V 0.2V and VCCB = 3.3V 0.3V
2 x VCC Open GND
500 From Output Under Test CL = 30pF (see Note A) 500
S1
TEST CONDITIONS
TEST tPD tPLZ / tPZL tPHZ / tPZH S1 Open 2 x VCC GND
Load Circuit
tW Timing Input VCC VCC/2 0V tSU Data Input VCC/2 tH VCC/2 0V Input VCC VCC/2 VCC/2 0V
VCC
Voltage Waveforms Pulse Duration
Output Control (low-level enabling) tPZL VCC Output Waveform 1 S1 at 2 X VCC (see Note B) Output Waveform 2 S1 at GND (see Note B) tPZH VCC/2
Voltage Waveforms Setup and Hold Times
VCC VCC/2 VCC/2 0V tPLZ VCC/2 tPHZ VCCA VOL+0.15V VOL VOH VOH-0.15V 0V
Input tPLH Output
VCC/2
VCC/2 0V tPHL VOH VCC/2 VCC/2 VOL
Voltage Waveforms Propagation Delay Times
Voltage Waveforms Enable and Disable Times
NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is LOW except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is HIGH except when disabled by the output control. C . All input pulses are supplied by generators having the following characteristics: PRR 10MHz; Zo = 50; tF 2ns; tR 2ns. D. The outputs are measured one at a time with one transition per measurement.
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IDT74LVCC3245A CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
INDUSTRIAL TEMPERATURE RANGE
LOAD CIRCUIT AND VOLTAGE WAVEFORMS PARAMETER MEASUREMENT INFORMATION (B PORT)
VCCA = 2.5V 0.2V and VCCB = 3.3V 0.3V
500 From Output Under Test CL = 50pF (see Note A) 500
S1
2 x VCC Open GND
TEST CONDITIONS
TEST tPD tPLZ / tPZL tPHZ / tPZH S1 Open 2 x VCC GND
Load Circuit
tW Timing Input VCC VCC/2 0V tSU Data Input VCC/2 tH VCC/2 0V Input VCC VCC/2 VCC/2 0V
VCC
Voltage Waveforms Pulse Duration
Voltage Waveforms Setup and Hold Times
Output Control (low-level enabling) tPZL Output Waveform 1 S1 at 2 X VCC (see Note B) Output Waveform 2 S1 at GND (see Note B) tPZH
VCC VCC/2 VCC/2 0V tPLZ VCC/2 tPHZ VCC/2 VCCA VOL+0.15V VOL VOH VOH-0.15V 0V
VCC Input tPLH Output VCC/2 VCC/2 VCC/2 0V tPHL VOH VCC/2 VOL
Voltage Waveforms Propagation Delay Times
Voltage Waveforms Enable and Disable Times
NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is LOW except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is HIGH except when disabled by the output control. C . All input pulses are supplied by generators having the following characteristics: PRR 10MHz; Zo = 50; tF 2ns; tR 2ns. D. The outputs are measured one at a time with one transition per measurement.
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IDT74LVCC3245A CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
INDUSTRIAL TEMPERATURE RANGE
LOAD CIRCUIT AND VOLTAGE WAVEFORMS PARAMETER MEASUREMENT INFORMATION (A PORT)
VCCA = 3.6V and VCCB = 5.5V
500 From Output Under Test CL = 50pF (see Note A) 500
S1
2 x VCC Open GND
TEST CONDITIONS
TEST tPLH / tPHL tPLZ / tPZL tPHZ / tPZH S1 Open 2 x VCC GND
Load Circuit
tW VCC B-Port Input 50% VCC 50% VCC 0V Output Control tPZL Output Waveform 1 S1 at 2 X VCC (see Note B) Output Waveform 2 S1 at Open (see Note B) VCC Input tPLH B-Port Output 50% VCC 50% VCC VOL 1.5V 1.5V 0V tPHL VOH tPLZ 1.5V 1.5V
2.7V 0V
Voltage Waveforms Pulse Duration
50% VCC tPZH 50% VCC tPHZ
VCC VOL+0.3V VOL VOH VOH-0.3V 0V
Voltage Waveforms Enable and Disable Times Low- and High-Level Enabling
Voltage Waveforms Propagation Delay Times Noninverting Outputs
NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is LOW except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is HIGH except when disabled by the output control. C . All input pulses are supplied by generators having the following characteristics: PRR 10MHz; Zo = 50; tF 2.5ns; tR 2.5ns. D. The outputs are measured one at a time with one transition per measurement.
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IDT74LVCC3245A CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
INDUSTRIAL TEMPERATURE RANGE
LOAD CIRCUIT AND VOLTAGE WAVEFORMS PARAMETER MEASUREMENT INFORMATION (B PORT)
VCCA = 3.6V and VCCB = 5.5V
500 From Output Under Test CL = 50pF (see Note A) 500
S1
2 x VCC Open GND
TEST CONDITIONS
TEST tPLH / tPHL tPLZ / tPZL tPHZ / tPZH S1 Open 2 x VCC GND
Load Circuit
tW VCCB B-Port Input 50% VCC 50% VCC 0V Output Control tPZL Output Waveform 1 S1 at 2 X VCC (see Note B) Output Waveform 2 S1 at Open (see Note B) VCCB Input tPLH A-Port Output 1.5V 1.5V VOL 50% VCC 50% VCC 0V tPHL VOH tPZH 1.5V tPLZ 1.5V tPHZ 1.5V 1.5V
2.7V 0V
Voltage Waveforms Pulse Duration
VCC VOL+0.3V VOL VOH VOH-0.3V 0V
Voltage Waveforms Enable and Disable Times Low- and High-Level Enabling
Voltage Waveforms Propagation Delay Times Noninverting Outputs
NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is LOW except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is HIGH except when disabled by the output control. C . All input pulses are supplied by generators having the following characteristics: PRR 10MHz; Zo = 50; tF 2.5ns; tR 2.5ns. D. The outputs are measured one at a time with one transition per measurement.
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IDT74LVCC3245A CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
INDUSTRIAL TEMPERATURE RANGE
LOAD CIRCUIT AND VOLTAGE WAVEFORMS PARAMETER MEASUREMENT INFORMATION (A AND B PORT)
VCCA = and VCCB = 3.6V
500 From Output Under Test CL = 50pF (see Note A) 500
S1
7V Open GND
TEST CONDITIONS
TEST tPLH / tPHL tPLZ / tPZL tPHZ / tPZH S1 Open 7V GND
Load Circuit
tW 2.7V Input 1.5V 1.5V 0V Output Waveform 1 S1 at 7V (see Note B) Output Waveform 2 S1 at Open (see Note B) 2.7V Input tPLH B-Port Output 1.5V 1.5V 1.5V 0V tPHL VOH 1.5V VOL tPZH 1.5V Output Control tPZL tPLZ 1.5V tPHZ 1.5V 1.5V
2.7V 0V
Voltage Waveforms Pulse Duration
3.5V VOL+0.3V VOL VOH VOH-0.3V 0V
Voltage Waveforms Enable and Disable Times Low- and High-Level Enabling
Voltage Waveforms Propagation Delay Times Noninverting Outputs
NOTES: A. CL includes probe and jig capacitance. B. Waveform 1 is for an output with internal conditions such that the output is LOW except when disabled by the output control. Waveform 2 is for an output with internal conditions such that the output is HIGH except when disabled by the output control. C . All input pulses are supplied by generators having the following characteristics: PRR 10MHz; Zo = 50; tF 2.5ns; tR 2.5ns. D. The outputs are measured one at a time with one transition per measurement.
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IDT74LVCC3245A CMOS OCTAL BUS TRANSCEIVER WITH ADJUSTABLE OUTPUT
INDUSTRIAL TEMPERATURE RANGE
ORDERING INFORMATION
X LVC IDT XX Temp. Range Bus-Hold XX XXXX Device Type Package
SO PY Q PG
Small Outline IC (gull wing) Shrink Small Outline Package Quarter Size Small Outline Package Thin Shrink Small Outline Package
C3245A Octal Bus Transceiver with Adjustable Output Voltage, 3-State Outputs, 24mA Blank 74 No Bus-Hold -40C to +85C
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