74LS74 Dual D Flip-Flop – DIP-14

The 7474 is a TTL logic integrated circuit containing two independent D-type flip-flops in a single package. Each flip-flop is positive edge-triggered, allowing data to be stored precisely on the rising edge of the clock signal. It also features asynchronous preset and clear inputs for immediate state control without waiting for the clock. The 7474 is widely used in synchronous digital systems for data storage, timing synchronization, counters, and state machine implementation. Operating on a standard 5V TTL supply, it is ideal for educational, industrial, and embedded digital designs.

Features

- Dual D-type flip-flop architecture

- Two independent flip-flops in one IC

- Positive edge-triggered clock inputs

- Asynchronous preset and clear inputs

- Complementary Q and Q? outputs

- Standard TTL logic compatibility

- Single 5V supply operation

- Reliable synchronous data storage

- Suitable for timing and state control circuits

- Useful in counters and registers

- DIP-14 through-hole package

- Breadboard-friendly design

- Fast switching performance

- Easy PCB integration

Specifications

- Model: 7474

- Device Type: Dual D-Type Flip-Flop IC

- Logic Family: TTL

- Number of Flip-Flops: 2

- Trigger Type: Positive Edge Triggered

- Control Inputs: Preset and Clear (Asynchronous)

- Outputs: Q and Q? (Complementary)

- Supply Voltage: 5V

- Propagation Delay (Typical): 20ns

- Maximum Clock Frequency: 25MHz

- Power Consumption (Typical): 40mW

- Package Type: 14-Pin DIP

- Mounting Type: Through-Hole

- Operating Temperature Range: 0°C to +70°C

- Application Type: Data Storage and Sequential Logic

Links

- 3D Model

- Datasheet

Tutorials

7474 D type flip flop practical with 74HC74