5-1

FACT DATA

Octal DType FlipFlop

with 3State Outputs

The MC74AC374/74ACT374 is a high-speed, low-power octal D-type flip-flop

featuring separate D-type inputs for each flip-flop and 3-state outputs for bus-

oriented applications. A buffered Clock (CP) and Output Enable (OE) are common

to all flip-flops.

• Buffered Positive Edge-Triggered Clock

• 3-State Outputs for Bus-Oriented Applications

• Outputs Source/Sink 24 mA

• See MC74AC273 for Reset Version

• See MC74AC377 for Clock Enable Version

• See MC74AC373 for Transparent Latch Version

• See MC74AC574 for Broadside Pinout Version

• See MC74AC564 for Broadside Pinout Version with Inverted Outputs

• ′ACT374 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

O7

D7

D6

O6

O5

D5

D4

O4

CP

OE

O0

D0

D1

O1

O2

D2

D3

O3

GND

PIN NAMES

D0–D7

Data Inputs

CP

Clock Pulse Input

OE

3-State Output Enable Input

O0–O7

3-State Outputs

TRUTH TABLE

Inputs

Outputs

Dn

CP

OE

On

H

L

H

L

L

L

X

X

H

Z

H = HIGH Voltage Level

L = LOW Voltage Level

X = Immaterial

Z = High Impedance

= LOW-to-HIGH Transition

MC74AC374

MC74ACT374

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