MC74ACT640 Motorola, MC74ACT640 Datasheet

MC74ACT640

Manufacturer Part Number

MC74ACT640

Description

OCTAL BIDIRECTIONAL TRANSCEIVER WITH 3-STATE OUTPUTS

Manufacturer

Motorola

Datasheet

1.MC74ACT640.pdf (6 pages)

Available stocks

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Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

MC74ACT640DWR2G

Manufacturer:

ON/安森美

Quantity:

20 000

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DataSheet

Octal Bidirectional Transceiver

with 3 State Outputs

two-way communication between data buses. The device transmits data from bus A

to bus B when T/R = HIGH, or from bus B to bus A when T/R = LOW. The enable

input can be used to disable the device so the buses are effectively isolated.

PIN NAMES

A 0 –A 7

T/R

B 0 –B 7

TRUTH TABLE

H = HIGH Voltage Level

L = LOW Voltage Level

X = Immaterial

Bidirectional Data Path

A and B Outputs Sink 24 mA/Source –24 mA

V CC

ACT640 Has TTL Compatible Inputs

The MC74AC640/74ACT640 octal bus transceiver is designed for asynchronous

T/R

.com

A 0

Side A Inputs or 3-State Outputs

Output Enable Input

Transmit/Receive Input

Side B Inputs or 3-State Outputs

B 0

A 1

T/R

B 1

A 2

B 2

A 3

Applied

Inputs

B 3

A 4

B 4

A 5

Direction

I/P O/P

A to B

B to A

Valid

B 5

A 6

B 6

A 7

Output

GND

B 7

FACT DATA

5-1

MC74ACT640

MC74AC640

OCTAL BIDIRECTIONAL

TRANSCEIVER WITH

3-STATE OUTPUTS

CASE 751D-04

CASE 738-03

DW SUFFIX

N SUFFIX

PLASTIC

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