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74AC245

STMicroelectronics
Part Number 74AC245
Manufacturer STMicroelectronics
Description OCTAL BUS TRANSCEIVER
Published Apr 3, 2005
Detailed Description 74AC245 OCTAL BUS TRANSCEIVER WITH 3 STATE OUTPUTS (NON INVERTED) s s s s s s s s s HIGH SPEED: tPD = 4.5ns (TYP...
Datasheet PDF File 74AC245 PDF File

74AC245
74AC245

Overview
74AC245 OCTAL BUS TRANSCEIVER WITH 3 STATE OUTPUTS (NON INVERTED) s s s s s s s s s HIGH SPEED: tPD = 4.
5ns (TYP.
) at VCC = 5V LOW POWER DISSIPATION: ICC = 4µA(MAX.
) at TA=25°C HIGH NOISE IMMUNITY: VNIH = V NIL = 28 % VCC (MIN.
) 50Ω TRANSMISSION LINE DRIVING CAPABILITY SYMMETRICAL OUTPUT IMPEDANCE: |IOH| = IOL = 24mA (MIN) BALANCED PROPAGATION DELAYS: tPLH ≅ tPHL OPERATING VOLTAGE RANGE: VCC (OPR) = 2V to 6V PIN AND FUNCTION COMPATIBLE WITH 74 SERIES 244 IMPROVED LATCH-UP IMMUNITY DIP SOP TSSOP ORDER CODES PACKAGE DIP SOP TSSOP TUBE 74AC245B 74AC245M T&R 74AC245MTR 74AC245TTR DIR input.
The enable input G can be used to disable the device so that the buses are effectively DESCRIPTION isolated.
.
The 74AC245 is an advanced high-speed CMOS www.
DataSheet4U.
com All floating bus terminals during HIGH-Z state OCTAL BUS TRANSCEIVER (3-STATE) must be held HIGH or LOW fabricated with sub-micron silicon gate and All inputs and outputs are equipped with double-layer metal wiring C2MOS tecnology.
protection circuits against static discharge, giving This IC is intended for two-way asynchronous them 2KV ESD immunity and transient excess communication between data buses and the voltage.
direction of data transmission is determined by PIN CONNECTION AND IEC LOGIC SYMBOLS April 2001 1/9 74AC245 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No 1 2, 3, 4, 5, 6, 7, 8, 9 18, 17, 16, 15, 14, 13, 12, 11 19 10 20 SYMBOL DIR A1 to A8 B1 to B8 NAME AND FUNCTION Directional Control Data Inputs/Outputs Data Inputs/Outputs G GND VCC Output Enable Input Ground (0V) Positive Supply Voltage TRUTH TABLE INPUTS G L L H X : Don’t Care Z : High Impedance FUNCTION DIR L H X A BUS OUTPUT INPUT Z B BUS INPUT OUTPUT Z OUTPUT Yn A=B B=A Z ABSOLUTE MAXIMUM RATINGS Symbol VCC VI VO IIK IOK IO Supply Voltage DC Input Voltage DC Output Voltage DC Input Diode Current DC Output Diode Current DC Output Current Parameter Value -0.
5 to +7 -0.
5 to VCC + 0.
5 -0.
5 to VCC + 0.
5 ± 20 ± 20...


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