74AC240 - STMicroelectronics

74AC240 OCTAL BUS BUFFER

protection circuits against static discharge, giving The AC240 is an advanced CMOS OCTAL BUS them 2KV ESD immunity and transient excess www.DataSheet4U.com BUFFER (3-STATE) fabricated with sub-micron voltage. 2 silicon gate and double-layer metal wiring C MOS technology. It is ideal for low power applications s HIGH SPEED: tPD = 4 ns (TYP.) at VCC = 5V LOW .

Features

WITH 74 SERIES 240 IMPROVED LATCH-UP IMMUNITY B M (Plastic Package) (Micro Package) ORDER CODES : 74AC240B 74AC240M PIN CONNECTION AND IEC LOGIC SYMBOLS April 1997 1/8 74AC240 INPUT AND OUTPUT EQUIVALENT CIRCUIT PIN DESCRIPTION PIN No 1 2, 4, 6, 8 9, 7, 5, 3 11, 13, 15, 17 18, 16, 14, 12 19 10 20 SYMBOL 1G 1A1 to 1A4 2Y1 to 2Y4 2A1 to 2A4 1Y1 to 1Y4 2G GND VCC NAME AND F UNCTIO N Output Enable Input Data Inputs Data Outputs Data Inputs Data Outputs Output Enabel Input Ground (0V) Positive Supply Voltage TRUTH TABLE INPUT G L L H X: ”H” or ”L” Z: High impedance OUT PUT An L H X Yn H L Z .