HD74HCT245 查看數據表（PDF） - Hitachi -> Renesas Electronics

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HD74HCT245

Octal Bus Transceivers (with 3-state outputs)

Hitachi -> Renesas Electronics 

HD74HCT245

Octal Bus Transceivers (with 3-state outputs)

Description

This 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 HD74HCT245 transfers true data from one bus to the other.

This device does not have schmitt trigger inputs.

Features

• LSTTL Output Logic Level Compatibility as well as CMOS Output Compatibility

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

• High Output Current: Fanout of 15 LSTTL Loads

• Wide Operating Voltage: VCC = 4.5 to 5.5 V

• Low Input Current: 1 µA max

• Low Quiescent Supply Current: ICC (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

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