74LS09 Quad 2-Input AND Gate – Open Collector, DIP-14

The 7409 is a TTL logic integrated circuit containing four independent 2-input AND gates with open-collector outputs in a single package. It performs standard AND logic functions while providing flexible output interfacing through external pull-up resistors. The open-collector design allows wired-AND connections, direct interfacing with higher-voltage circuits, and driving external loads such as LEDs or relays. Operating from a standard 5V TTL supply, the 7409 is commonly used in logic control, signal gating, level shifting, and digital interface applications.

Features

- Quad 2-input AND gate configuration

- Four independent logic gates

- Open-collector outputs for flexible interfacing

- Supports wired-AND logic connections

- External pull-up resistor compatibility

- Standard TTL logic compatibility

- Single 5V supply operation

- Suitable for higher-voltage interfacing

- Can drive indicator loads and control circuits

- Reliable TTL switching performance

- DIP-14 through-hole package

- Breadboard-friendly design

- Easy PCB integration

- Ideal for digital logic applications

Specifications

- Model: 7409

- Device Type: Quad 2-Input AND Gate IC

- Output Type: Open-Collector

- Logic Family: TTL

- Number of Gates: 4

- Inputs per Gate: 2

- Supply Voltage: 5V

- Propagation Delay (Typical): 15ns

- Maximum Output Sink Current: 16mA

- Power Consumption (Typical): 40mW

- Package Type: 14-Pin DIP

- Mounting Type: Through-Hole

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

- Application Type: Logic Control and Signal Gating

Links

- 3D Model

- Datasheet