IN74HC74AD Integral Corp., IN74HC74AD Datasheet

IN74HC74AD

Manufacturer Part Number

IN74HC74AD

Description

Dual D flip-flop with set and reset, high-performance silicon-gate CMOS

Manufacturer

Integral Corp.

Datasheet

1.IN74HC74AD.pdf (5 pages)

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Dual D Flip-Flop with Set and Reset

High-Performance Silicon-Gate CMOS

device inputs are compatible with standard CMOS outputs; with pullup

resistors, they are compatible with LS/ALSTTL outputs.

and Clock inputs. Information at a D-input is transferred to the

corresponding Q output on the next positive going edge of the clock

input. Both Q and Q outputs are available from each flip-flop. The Set

and Reset inputs are asynchronous.

The IN74HC74A is identical in pinout to the LS/ALS74. The

This device consists of two D flip-flops with individual Set, Reset,

Outputs Directly Interface to CMOS, NMOS, and TTL

Operating Voltage Range: 2.0 to 6.0 V

Low Input Current: 1.0 A

High Noise Immunity Characteristic of CMOS Devices

LOGIC DIAGRAM

PIN 7 = GND

PIN 14 =V

*Both outputs will remain high as long as Set

and Reset are low, but the output states are

unpredictable if Set and Reset go high

simultaneously.

X = don’t care

Set

Reset

FUNCTION TABLE

Inputs

ORDERING INFORMATION

= -55 to 125 C for all packages

Clock

PIN ASSIGNMENT

TECHNICAL DATA

IN74HC74AN Plastic

IN74HC74AD SOIC

IN74HC74A

Data

No Change

Outputs

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IN74HC74AD Summary of contents

Page 1

... Operating Voltage Range: 2.0 to 6.0 V Low Input Current: 1.0 A High Noise Immunity Characteristic of CMOS Devices LOGIC DIAGRAM PIN PIN 7 = GND TECHNICAL DATA IN74HC74A ORDERING INFORMATION IN74HC74AN Plastic IN74HC74AD SOIC T = -55 to 125 C for all packages A PIN ASSIGNMENT FUNCTION TABLE Inputs Set Reset Clock Data ...

Page 2

IN74HC74A * MAXIMUM RATINGS Symbol V DC Supply Voltage (Referenced to GND Input Voltage (Referenced to GND Output Voltage (Referenced to GND) OUT I DC Input Current, per Pin Output Current, ...

Page 3

DC ELECTRICAL CHARACTERISTICS Symbol Parameter V Minimum High-Level IH Input Voltage V Maximum Low - IL Level Input Voltage V Minimum High-Level OH Output Voltage V Maximum Low-Level OL Output Voltage I Maximum Input IN Leakage Current I Maximum Quiescent ...

Page 4

IN74HC74A AC ELECTRICAL CHARACTERISTICS Symbol Parameter f Maximum Clock Frequency (50% Duty Cycle) max (Figures 1 and Maximum Propagation Delay, Clock PLH PHL (Figures 1 and Maximum Propagation ...

Page 5

Figure 1. Switching Waveform Figure 3. Switching Waveform EXPANDED LOGIC DIAGRAM IN74HC74A Figure 2. Switching Waveform Figure 4.Test Circuit 83 ...

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