NXP 逻辑集成电路 闭锁 74HC573D

 74HC573D

 74HC573D

 74HC573D

FEATURES

• Inputs and outputs on opposite

sides of package allowing easy

interface with microprocessors

• Useful as input or output port for

microprocessors/microcomputers

• 3-state non-inverting outputs for

bus oriented applications

• Common 3-state output enable

input

• Functionally identical to the “563”

and “373”

• Output capability: bus driver

• ICC category: MSI

GENERAL DESCRIPTION

The 74HC/HCT573 are high-speed

Si-gate CMOS devices and are pin

compatible with low power Schottky

TTL (LSTTL). They are specified in

compliance with JEDEC standard no.

7A.

The 74HC/HCT573 are octal D-type

transparent latches featuring

separate D-type inputs for each latch

and 3-state outputs for bus oriented

applications.

A latch enable (LE) input and an

output enable (OE) input are common

to all latches.

The “573” consists of eight D-type

transparent latches with 3-state true

outputs. When LE is HIGH, data at

the Dn inputs enter the latches. In this

condition the latches are transparent,

i.e. a latch output will change state

each time its corresponding D-input

changes.