© Semiconductor Components Industries, LLC, 2000

March, 2000 – Rev. 8

1

Publication Order Number:

MC74HCT573A/D

MC74HCT573A

Octal 3-State Noninverting

Transparent Latch with

LSTTL Compatible Inputs

High–Performance Silicon–Gate CMOS

The MC74HCT573A is identical in pinout to the LS573. This

device may be used as a level converter for interfacing TTL or NMOS

outputs to High–Speed CMOS inputs.

These latches appear transparent to data (i.e., the outputs change

asynchronously) when Latch Enable is high. When Latch Enable goes

low, data meeting the setup and hold times becomes latched.

The Output Enable input does not affect the state of the latches, but

when Output Enable is high, all device outputs are forced to the

high–impedance state. Thus, data may be latched even when the

outputs are not enabled.

The HCT573A is identical in function to the HCT373A but has the

Data Inputs on the opposite side of the package from the outputs to

facilitate PC board layout.

No. 7A

— Improved Propagation Delays

— 50% Lower Quiescent Power

http://onsemi.com

MARKING

DIAGRAMS

1

20

A

= Assembly Location

WL = Wafer Lot

YY = Year

WW = Work Week

SOIC WIDE–20

DW SUFFIX

CASE 751D

HCT573A

AWLYYWW

PDIP–20

N SUFFIX

CASE 738

1

20

MC74HCT573AN

AWLYYWW

TSSOP–20

DT SUFFIX

CASE 948G

1

20

1

20

1

20

Device

Package

Shipping

ORDERING INFORMATION

MC74HCT573AN

PDIP–20

1440 / Box

MC74HCT573ADW

SOIC–WIDE

38 / Rail

MC74HCT573ADWR2

SOIC–WIDE

1000 / Reel

MC74HCT573ADT

TSSOP–20

75 / Rail

MC74HCT573ADTR2

TSSOP–20

2500 / Reel

HCT

573A

ALYW

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