© Semiconductor Components Industries, LLC, 2000

March, 2000 – Rev. 8

1

Publication Order Number:

MC74HCT574A/D

MC74HCT574A

Octal 3-State Noninverting

D Flip-Flop with

LSTTL-Compatible Inputs

High–Performance Silicon–Gate CMOS

The MC74HCT574A is identical in pinout to the LS574. This

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

outputs to High Speed CMOS inputs.

Data meeting the setup time is clocked to the outputs with the rising

edge of the Clock. The Output Enable input does not affect the states

of the flip–flops, but when Output Enable is high, all device outputs

are forced to the high–impedance state. Thus, data may be stored even

when the outputs are not enabled.

The HCT574A is identical in function to the HCT374A but has the

flip–flop inputs on the opposite side of the package from the outputs to

facilitate PC board layout.

No. 7A

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

HCT574A

AWLYYWW

PDIP–20

N SUFFIX

CASE 738

1

20

MC74HCT574AN

AWLYYWW

1

20

1

20

Device

Package

Shipping

ORDERING INFORMATION

MC74HCT574AN

PDIP–20

1440 / Box

MC74HCT574ADW

SOIC–WIDE

38 / Rail

MC74HCT574ADWR2

SOIC–WIDE

1000 / Reel