HD74AC244/HD74ACT244
Octal Buffer/Line Driver with 3-State Output
Description
The HD74AC244/HD74ACT244 is an octal buffer and line driver designed to be employed as a memory address driver, clock driver and bus-oriented transmitter/receive which provides improved PC board density.
Features
• 3-State Outputs Drive Bus Lines or Buffer Memory Address Registers • Outputs Source/Sink 24 mA • HD74ACT244 has TTL-Compatible Inputs
Pin Arrangement
OE1 1 2 3 4 5 6 7 8 9 GND 10 (Top view)
20 VCC 19 OE2 18 17 16 15 14 13 12 11
HD74AC244/HD74ACT244
Truth Tables
Inputs OE1 L L H D L H X Outputs (Pins 12, 14, 16, 18) L H Z
Inputs OE2 L L H H L X Z : : : : High
Voltage Level Low
Voltage Level Immater...