5-1

FACT DATA

Octal DType FlipFlop

with 3State 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.

• Inputs and Outputs on Opposite Sides of Package

Allowing Easy Interface with Microprocessors

• Useful as Input or Output Port for Microprocessors

• Functionally Identical to MC74AC374/74ACT374

• 3-State Outputs for Bus-Oriented Applications

• Outputs Source/Sink 24 mA

• ′ACT574 Has TTL Compatible Inputs

19

20

18

17

16

15

14

2

1

3

4

5

6

7

VCC

13

8

12

9

11

10

O0

O1

O2

O3

O4

O5

O6

O7

CP

OE

D0

D1

D2

D3

D4

D5

D6

D7

GND

PIN NAMES

D0–D7

Data Inputs

CP

Clock Pulse Input

OE

3-State Output Enable Input

O0–O7

3-State Outputs

MC74AC57

MC74ACT574

OCTAL D-TYPE

FLIP-FLOP WITH

3-STATE OUTPUTS

N SUFFIX

CASE 738-03

PLASTIC

DW SUFFIX

CASE 751D-04

PLASTIC

LOGIC SYMBOL

O0 O1 O2 O3 O4 O5 O6 O7

D0 D1 D2 D3 D4 D5 D6 D7

CP

OE