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74ACT16245
16-BIT BUS TRANSCEIVER WITH 3-STATE OUTPUTS (NON INVERTED)
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HIGH SPEED: tPD = 4.9ns (TYP.) at VCC = 5V LOW POWER DISSIPATION: ICC = 8A(MAX.) at TA=25C COMPATIBLE WITH TTL OUTPUTS VIH = 2V (MIN.), VIL = 0.8V (MAX.) 50 TRANSMISSION LINE DRIVING CAPABILITY SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24mA (MIN) OPERATING VOLTAGE RANGE: VCC (OPR) = 4.5V to 5.5V IMPROVED LATCH-UP IMMUNITY
TSSOP
ORDER CODES
PACKAGE TSSOP TUBE T&R 74ACT16245TTR
DESCRIPTION The 74ACT16245 is an advanced high-speed CMOS 16-BIT BUS TRANSCEIVER (3-STATE) fabricated with sub-micron silicon gate and double-layer metal wiring C2MOS technology. This IC is intended for two-way asynchronous communication between data buses and the direction of data transmission is determined by DIR input. The enable inputs G can be used to disable the device so that the buses are effectively isolated. All floating bus terminals during the Z-state must be held HIGH or LOW. All inputs and outputs are equipped with protection circuits against static discharge, giving them 2KV ESD immunity and transient excess voltage.
PIN CONNECTION
July 2003
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74ACT16245
INPUT AND OUTPUT EQUIVALENT CIRCUIT
PIN DESCRIPTION
PIN No 1 2, 3, 5, 6, 8, 9, 11, 12 13, 14, 16, 17, 19, 20, 22, 23 24 25 36, 35, 33, 32, 30, 29, 27, 26 47, 46, 44, 43, 41, 40, 38, 38 48 4, 10, 15, 21, 28, 34, 39, 45 7, 18, 31, 42 SYMBOL NAME AND FUNCTION
IEC LOGIC SYMBOLS
1DIR Directional Control 1B1 to 1B8 Data Inputs/Outputs 2B1 to 2B8 Data Inputs/Outputs 2DIR Directional Control 2G Output Enable Input 2A1 to 2A8 Data Inputs/Outputs 1A1 to 1A8 Data Inputs/Outputs 1G GND VCC Output Enable Input Ground (0V) Positive Supply Voltage
TRUTH TABLE
INPUTS G L L H DIR L H X FUNCTION A BUS B BUS OUTPUT Yn A=B B=A Z
OUTPUT INPUT INPUT OUTPUT Z Z
X : Don`t Care Z : High Impedance
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74ACT16245
ABSOLUTE MAXIMUM RATINGS
Symbol VCC VI VO IIK IOK IO Tstg TL Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Current Storage Temperature Lead Temperature (10 sec) Parameter Value -0.5 to +7 -0.5 to VCC + 0.5 -0.5 to VCC + 0.5 20 20 50 400 -65 to +150 300 Unit V V V mA mA mA mA C C
ICC or IGND DC VCC or Ground Current
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these conditions is not implied.
RECOMMENDED OPERATING CONDITIONS
Symbol VCC VI VO Top dt/dv Supply Voltage Input Voltage Output Voltage Operating Temperature Input Rise and Fall Time VCC = 4.5 to 5.5V (note 1) Parameter Value 4.5 to 5.5 0 to VCC 0 to VCC -55 to 125 8 Unit V V V C ns/V
1) VIN from 0.8V to 2.0V
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DC SPECIFICATIONS
Test Condition Symbol Parameter VCC (V) 4.5 5.5 4.5 5.5 4.5 5.5 4.5 5.5 VOL Low Level Output Voltage 4.5 5.5 4.5 5.5 II IOZ Input Leakage Current High Impedance Output Leakage Current Max ICC/Input Quiescent Supply Current Dynamic Output Current (note 1, 2) 5.5 5.5 5.5 5.5 5.5 VO = 0.1 V or VCC-0.1V VO = 0.1 V or VCC-0.1V IO=-50 A IO=-50 A IO=-24 mA IO=-24 mA IO=50 A IO=50 A IO=24 mA IO=24 mA VI = VCC or GND VI = VIH or VIIL VO = VCC or GND VI = VCC - 2.1V VI = VCC or GND VOLD = 1.65 V max VOHD = 3.85 V min 0.6 8 4.4 5.4 3.86 4.86 0.001 0.001 0.1 0.1 0.36 0.36 0.1 0.5 TA = 25C Min. 2.0 2.0 Typ. 1.5 1.5 1.5 1.5 4.49 5.49 Max. Value -40 to 85C Min. 2.0 2.0 0.8 0.8 4.4 5.4 3.76 4.76 0.1 0.1 0.44 0.44 1 5 1.5 80 75 -75 0.8 0.8 4.4 5.4 3.7 4.7 0.1 0.1 0.5 0.5 1 10 1.6 160 50 -50 A A mA A mA mA V Max. -55 to 125C Min. 2.0 2.0 0.8 0.8 V Max. V Unit
VIH VIL VOH
High Level Input Voltage Low Level Input Voltage High Level Output Voltage
ICCT ICC IOLD IOHD
1) Maximum test duration 2ms, one output loaded at time 2) Incident wave switching is guaranteed on transmission lines with impedances as low as 50
AC ELECTRICAL CHARACTERISTICS (CL = 50 pF, RL = 500 , Input tr = tf = 3ns)
Test Condition Symbol Parameter VCC (V) 5.0(*) 5.0(*) 5.0(*) TA = 25C Min. Typ. 3.5 4.8 6.1 5.5 5.6 5.0 Max. 4.6 6.5 9.2 8.0 8.3 7.3 Value -40 to 85C Min. Max. 10.5 10.2 11.6 10.0 11.8 12.6 -55 to 125C Min. Max. 11.5 11.1 12.6 10.9 12.7 13.4 ns ns ns Unit
tPLH tPHL tPZL tPZH tPLZ tPHZ
Propagation Delay Time Output Enable Time Output DisableTime
(*) Voltage range is 5.0V 0.5V
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74ACT16245
CAPACITIVE CHARACTERISTICS
Test Condition Symbol Parameter VCC (V) 5.0 5.0 5.0 fIN = 10MHz TA = 25C Min. Typ. 6 14 24 Max. Value -40 to 85C Min. Max. -55 to 125C Min. Max. pF pF pF Unit
CIN CI/O CPD
Input Capacitance I/O Capacitance Power Dissipation Capacitance (note 1)
1) CPD is defined as the value of the IC's internal equivalent capacitance which is calculated from the operating current consumption without load. (Refer to Test Circuit). Average operating current can be obtained by the following equation. ICC(opr) = CPD x VCC x fIN + ICC/16 (per circuit)
TEST CIRCUIT
Test tPLH, tPHL tPZL, tPLZ tPZH, tPHZ
CL = 50pF or equivalent (includes jig and probe capacitance) RL = R1 = 500 or equivalent RT = ZOUT of pulse generator (typically 50)
Switch Open 2VCC GND
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74ACT16245
WAVEFORM 1: PROPAGATION DELAYS (f=1MHz; 50% duty cycle)
WAVEFORM 2: OUTPUT ENABLE AND DISABLE TIME (f=1MHz; 50% duty cycle)
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74ACT16245
TSSOP48 MECHANICAL DATA
mm. DIM. MIN. A A1 A2 b c D E E1 e K L 0 0.50 6.0 0.5 BSC 8 0.75 0 0.020 0.17 0.09 12.4 8.1 BSC 6.2 0.236 0.0197 BSC 8 0.030 0.05 0.9 0.27 0.20 12.6 0.0067 0.0035 0.488 0.318 BSC 0.244 TYP MAX. 1.2 0.15 0.002 0.035 0.011 0.0079 0.496 MIN. TYP. MAX. 0.047 0.006 inch
A
A2 A1 b e K c L E
D
E1
PIN 1 IDENTIFICATION
1
7065588C
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Tape & Reel TSSOP48 MECHANICAL DATA
mm. DIM. MIN. A C D N T Ao Bo Ko Po P 8.7 13.1 1.5 3.9 11.9 12.8 20.2 60 30.4 8.9 13.3 1.7 4.1 12.1 0.343 0.516 0.059 0.153 0.468 TYP MAX. 330 13.2 0.504 0.795 2.362 1.197 0.350 0.524 0.067 0.161 0.476 MIN. TYP. MAX. 12.992 0.519 inch
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74ACT16245
Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. (c) The ST logo is a registered trademark of STMicroelectronics (c) 2003 STMicroelectronics - Printed in Italy - All Rights Reserved STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco Singapore - Spain - Sweden - Switzerland - United Kingdom - United States. (c) http://www.st.com
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