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7474 Dual D Flip-Flop

Contains two independent D-type flip-flops
Features asynchronous preset and clear inputs
Positive-edge triggered clock input
Standard TTL logic level compatible
Used in data storage, registers, and timing circuits

SKU: 7474

20,00 EGP

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Description

7474 Dual D Flip-Flop – Product Overview

The 7474 is a dual positive-edge-triggered D-type flip-flop IC with preset and clear inputs. It stores and transfers data on the rising edge of the clock, making it essential for data storage, synchronization, and timing applications in digital systems.

⚙️ Key Features

✅ Contains 2 independent D-type flip-flops
✅ Positive-edge-triggered clock input
✅ Asynchronous preset (set) and clear inputs for each flip-flop
✅ TTL compatible logic levels
✅ Typical propagation delay around 15 ns
✅ Standard DIP-14 package for easy breadboard and PCB integration

📋 Specifications

Parameter	Description
IC Number	7474
Number of Flip-Flops	2
Flip-Flop Type	D-type Flip-Flop
Inputs	D, Clock, Preset, Clear
Outputs	Q, Q’ (Complement)
Operating Voltage	4.75V to 5.25V (Typical 5V)
Propagation Delay	Approx. 15 ns
Logic Family	TTL (Transistor-Transistor Logic)
Package Type	DIP-14

🎯 Applications

Data storage and synchronization
Shift registers
Counters and registers
Timing circuits and state machines
Digital memory elements

📦 Package Includes

1 × 7474 Dual D Flip-Flop IC (DIP-14)

Pin Layout

Pin Description

Pin Number	Description
1	Clear 1 Input
2	D1 Input
3	Clock 1 Input
4	Preset 1 Input
5	Q1 Output
6	Complement Q1 Output
7	Ground
8	Complement Q2 Output
9	Q2 Output
10	Preset 2 Input
11	Clock 2 Input
12	D2 Input
13	Clear 2 Input
14	Positive Supply

Dimensional Drawing

Technical Data

Absolute Maximum Ratings

Supply Voltage	7V
Input Voltage	5.5V
Operating Free Air Temperature	0°C to +70°C
Storage Temperature Range	-65°C to +150°C

Recommended Operating Conditions

Symbol	Parameter	Min	Typ	Max	Units
Vcc	Supply Voltage	4.75	5	5.25	V
Vih	HIGH Level Input Voltage	2			V
Vil	LOW Level Input Voltage			0.8	V
Ioh	HIGH Level Output Current			-0.4	mA
Iol	LOW Level Output Current			16	mA
Ta	Free Air Operating Temperature	0		70	°C

Electrical Characteristics

Symbol	Parameter	Conditions	Min	Typ	Max	Units
Vi	Input Clamp Voltage	Vcc=Min Ii=-12mA			-1.5	V
Voh	HIGH Level Output Voltage	Vcc=Min Ioh=MAX Vil=MAX	2.4	3.4		V
Vol	LOW Level Output Voltage	Vcc=Min Iol=MAX Vih=MAX		0.2	0.4	V
Ii	Input Current@MAX Input Voltage	Vcc=Max Vi=5.5V			1	mA
Iih	HIGH Level Input Current	Vcc=Max Vi=2.4V			40	µA
Iil	LOW Level Input Current	Vcc=Max Vi=0.4V			-1.6	mA
Ios	Short Circuit Output Current	Vcc=Max	-18		-55	mA
Icch	Supply Current with Outputs HIGH	Vcc=Max		4	8	mA
Iccl	Supply Current with Outputs LOW	Vcc=Max		12	22	mA

Switching Characteristics at Vcc=5V,Ta=25°C

Symbol	Parameter	Conditions	Min	Typ	Max	Units
tplh	Propagation Delay Time LOW-to-HIGH Level Output	Cl=15pF Rl=400R			22	nS
tphl	Propagation Delay Time HIGH-to-LOW Level Output	Cl=15pF Rl=400R			15	nS

Specification

General

Weight Weight	0,0012 g
Dimensions	1,93 × 0,64 × 0,33 mm
Product Name	7474 Dual D Flip-Flop
Logic Family	TTL
Number of Flip-Flops	2 (Dual)
Type	D Flip-Flop
Features	Preset and Clear Inputs
Supply Voltage	4.75V – 5.25V (Typical 5V)
Input Voltage (VIH/VIL)	2V min / 0.8V max
Output Current (IOL/IOH)	16mA / -0.4mA
Propagation Delay	15ns (typical)
Operating Temperature Range	0°C – +70°C
Package Type	DIP-14
Mounting Type	Through-Hole
Output Type	TTL Compatible
RoHS Compliant	Yes