HD74HC643 데이터 시트보기 (PDF) - Hitachi -> Renesas Electronics

부품명

상세내역

일치하는 목록

HD74HC643

Octal Bus Transceivers (with 3-state outputs)

Hitachi -> Renesas Electronics 

HD74HC640/HD74HC643

Octal Bus Transceivers (with 3-state outputs)

Description

Each device has an active enable 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

HD74HC640 transfers inverted data from one bus to other and the HD74HC643 transfers inverted data

from the A bus to the B bus and true data from the B bus to the A bus.

Features

• High Speed Operation: tpd = 12 ns typ (CL = 50 pF)

• High Output Current: Fanout of 15 LSTTL Loads

• Wide Operating Voltage: VCC = 2 to 6 V

• Low Input Current: 1 µA max

• Low Quiescent Supply Current: ICC (static) = 4 µA max (Ta = 25°C)

Function Table

Control Inputs

G

DIR

L

L

L

H

H

X

Operation

HD74HC640

B data to A bus

A data to B bus

Isolation

HD74HC643

B data to A bus

A data to B bus

Isolation

Share Link: