DESCRIPTION
isolated.. 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 ± 2...
STMicroelectronics
