MM74HC74J National Semiconductor, MM74HC74J Datasheet

MM74HC74J

Manufacturer Part Number

MM74HC74J

Description

Dual D Flip-Flop with Preset and Clear

Manufacturer

National Semiconductor

Datasheet

1.MM74HC74J.pdf (4 pages)

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C 1995 National Semiconductor Corporation

MM54HC74A MM74HC74A

Dual D Flip-Flop with Preset and Clear

General Description

The MM54HC74A MM74HC74A utilizes advanced silicon-

gate CMOS technology to achieve operating speeds similar

to the equivalent LS-TTL part It possesses the high noise

immunity and low power consumption of standard CMOS

integrated circuits along with the ability to drive 10 LS-TTL

loads

This flip-flop has independent data preset clear and clock

inputs and Q and Q outputs The logic level present at the

data input is transferred to the output during the positive-go-

ing transition of the clock pulse Preset and clear are inde-

pendent of the clock and accomplished by a low level at the

appropriate input

Connection and Logic Diagrams

Order Number MM54HC74A or MM74HC74A

Dual-In-Line Package

TL F 5106

TL F 5106 – 1

The 54HC 74HC logic family is functionally and pinout com-

patible with the standard 54LS 74LS logic family All inputs

are protected from damage due to static discharge by inter-

nal diode clamps to V

Features

Truth Table

Typical propagation delay 20 ns

Wide power supply range 2– 6V

Low quiescent current 40 A maximum (74HC Series)

Low input current 1 A maximum

Fanout of 10 LS-TTL loads

Note Q0

tions were established

when preset and clear inputs return to their inactive (high)

level

This configuration is nonstable that is it will not persist

the level of Q before the indicated input condi-

CLR

Inputs

CLK

and ground

RRD-B30M105 Printed in U S A

TL F 5106 – 2

Outputs

January 1988

Related parts for MM74HC74J

MM74HC74J Summary of contents

Page 1

... Connection and Logic Diagrams Dual-In-Line Package Order Number MM54HC74A or MM74HC74A C 1995 National Semiconductor Corporation TL F 5106 The 54HC 74HC logic family is functionally and pinout com- patible with the standard 54LS 74LS logic family All inputs are protected from damage due to static discharge by inter- ...

Page 2

... Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Supply Voltage ( Input Voltage ( Output Voltage ( OUT Clamp Diode Current ( Output Current per pin (I ) OUT GND Current per pin ( Storage Temperature Range (T ...

Page 3

AC Electrical Characteristics Symbol Parameter f Maximum Operating MAX Frequency t t Maximum Propagation PHL PLH Delay Clock Maximum Propagation PHL PLH Delay Preset or Clear Minimum Removal Time ...

Page 4

... Physical Dimensions inches (millimeters) Order Number MM54HC74J or MM74HC74J LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF NATIONAL SEMICONDUCTOR CORPORATION As used herein 1 Life support devices or systems are devices or ...

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