HD74HC245 Datasheet, PDF (1/9 Pages) Hitachi Semiconductor – Octal Bus Transceivers (with 3-state outputs)

HD74HC245
Octal Bus Transceivers (with 3-state outputs)
Description
Each device has an active low enable input G and a direction control input, DIR. When DIR is high, data
flows from the A inputs to the B outputs. When DIR is low, data flows from the B inputs to the A outputs.
The HD74HC245 transfers true data from one bus to the other. This device does not have schmitt trigger
inputs.
Features
• High Speed Operation: t_pd = 8 ns typ (C_L = 50 pF)
• High Output Current: Fanout of 15 LSTTL Loads
• Wide Operating Voltage: V_CC = 2 to 6 V
• Low Input Current: 1 µA max
• Low Quiescent Supply Current: I_CC (static) = 4 µA max (Ta = 25°C)
Function Table
Enable G
L
L
H
H : high level
L : low level
X : irrelevant
Direction Control DIR
L
H
X
Operation
B data to A bus
A data to B bus
Isolation