Rev.2.00, Jul.16.2004, page 1 of 7

HD74AC74

Dual D-Type Positive Edge-Triggered Flip-Flop

REJ03D0277–0200Z

(Previous ADE-205-361 (Z))

Rev.2.00

Jul.16.2004

Description

The HD74AC74 is a dual D-type flip-flop with Asynchronous Clear and Set inputs and complementary (Q,

Q) outputs.

Information at the input is transferred to the outputs on the positive edge of the clock pulse. Clock triggering occurs at a

voltage level of the clock pulse and is not directly related to the transition time of the positive-going pulse. After the

Clock Pulse input threshold voltage has been passed, the Data input is locked out and information present will not be

transferred to the outputs until the next rising edge of the Clock Pulse input.

Features

Asynchronous Inputs:

Low input to

S

Low input to

C

Clear and Set are independent of clock

Simultaneous Low on

C

• Outputs Source/Sink 24 mA

• Ordering Information

Part Name

Package Type

Package Code Package Abbreviation Taping Abbreviation (Quantity)

HD74AC74P

DIP-14 pin

DP-14, -14AV

P

—

HD74AC74FPEL

SOP-14 pin (JEITA)

FP-14DAV

FP

EL (2,000 pcs/reel)

HD74AC74RPEL

SOP-14 pin (JEDEC)

FP-14DNV

RP

EL (2,500 pcs/reel)

HD74AC74TELL

TSSOP-14 pin

TTP-14DV

T

ELL (2,000 pcs/reel)

Notes: 1. Please consult the sales office for the above package availability.

2. The packages with lead-free pins are distinguished from the conventional products by adding V at the end of

the package code.

Pin Arrangement

1

2

3

4

5

6

7

GND

14

13

12

11

10

9

8

(Top view)