HD74HC643RPEL 查看數據表（PDF） - Renesas Electronics

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HD74HC643RPEL

Octal Bus Transceivers (with 3-state outputs)

Renesas Electronics 

HD74HC640, HD74HC643

Octal Bus Transceivers (with 3-state outputs)

REJ03D0637-0200

(Previous ADE-205-517)

Rev.2.00

Mar 30, 2006

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)

• Ordering Information

Part Name

Package Type

Package Code

(Previous Code)

Package

Abbreviation

HD74HC640P

DILP-20 pin

PRDP0020AC-B

(DP-20NEV)

P

HD74HC640FPEL SOP-20 pin (JEITA)

PRSP0020DD-B

(FP-20DAV)

FP

HD74HC640RPEL

SOP-20 pin (JEDEC)

PRSP0020DC-A

RP

HD74HC643RPEL

(FP-20DBV)

Note: Please consult the sales office for the above package availability.

Taping Abbreviation

(Quantity)

—

EL (2,000 pcs/reel)

EL (1,000 pcs/reel)

Function Table

Control Inputs

G

DIR

L

L

L

H

H

X

H : high level

L : low level

X : irrelevant

HD74HC640

B data to A bus

A data to B bus

Isolation

Operation

HD74HC643

B data to A bus

A data to B bus

Isolation

Rev.2.00 Mar 30, 2006 page 1 of 10

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