© Semiconductor Components Industries, LLC, 2006

December, 2006 − Rev. 8

1

Publication Order Number:

MC74AC574/D

MC74AC574, MC74ACT574

Octal D Flip−Flop with

3−State Outputs

The MC74AC574/74ACT574 is a high−speed, low power octal

flip−flop with a buffered common Clock (CP) and a buffered common

Output Enable (OE). The information presented to the D inputs is

stored in the flip−flops on the LOW−to−HIGH Clock (CP) transition.

The MC74AC574/74ACT574 is functionally identical to the

MC74AC374/74ACT374 except for the pinouts.

Features

Interface with Microprocessors

Figure 1. Pinout: 20−Lead Packages Conductors

(Top View)

19

20

18

17

16

15

14

2

1

34567

13

8

12

9

11

10

CP

OE

GND

PIN ASSIGNMENT

PIN

FUNCTION

Data Inputs

CP

Clock Pulse Input

OE

3−State Output Enable Input

3−State Outputs

Figure 2. Logic Symbol

CP

OE

See general marking information in the device marking

section on page 6 of this data sheet.

DEVICE MARKING INFORMATION

http://onsemi.com

SOIC−20W

DW SUFFIX

CASE 751D

TSSOP−20

DT SUFFIX

CASE 948E

SOEIAJ−20

M SUFFIX

CASE 967

1

1

1

PDIP−20

N SUFFIX

CASE 738

1

See detailed ordering and shipping information in the package

dimensions section on page 7 of this data sheet.

ORDERING INFORMATION