HLF ULN2803 – Eight Darlington Array Driver (DIP18) | 8-Channel High-Current Driver | 50V, 500mA per Channel, –40°C to +85°C | Through-Hole Package

The HLF ULN2803 (DIP18) is an eight-channel high-voltage, high-current Darlington transistor array designed to interface TTL and CMOS logic to high-power loads. Each channel can sink up to 500mA and withstand up to 50V, making it perfect for controlling relays, lamps, solenoids, LEDs, and stepper motors.

The device includes integrated clamp diodes for inductive load protection and features TTL/5V logic-compatible inputs for easy interfacing with microcontrollers and logic circuits. Its robust and reliable design makes it a popular choice in industrial, automotive, and embedded applications.

Key Features:

• Function: 8-Channel Darlington Transistor Array

• Technology: Bipolar

• Operating Voltage: Up to 50V

• Output Current: 500mA per Channel

• Input Logic Compatibility: TTL/CMOS (5V Logic)

• Operating Temperature: –40°C to +85°C

• Package Type: DIP18 (Dual In-Line Package)

• Mounting Type: Through-Hole

• Eight High-Current Open-Collector Outputs

• Built-In Clamp Diodes for Inductive Load Protection

• Common Cathode Freewheeling Diode Connection

• TTL/CMOS Compatible Inputs

• Proven, Cost-Effective Interface Solution

Applications:

• Relay and Solenoid Drivers

• LED and Display Control

• Stepper Motor Interface (with L297/L298)

• Printer and Automation Control Systems

• Industrial and Consumer Electronics