ULN2003 / ILN2003 (2003) 7 Darlington Transistor Arrays IC DIP 16 Package

ULN2003 / ILN2003 (2003) 7 Darlington Transistor Arrays IC DIP 16 Package 

The ULN2003 / ILN2003 is a 7-channel Darlington transistor array IC designed to interface low-level logic signals with higher-current and higher-voltage loads. It integrates seven NPN Darlington transistor pairs with open-collector outputs, enabling direct control of devices such as relays, solenoids, motors, lamps, and LEDs from TTL or CMOS logic circuits.

Each output channel includes a built-in flyback (clamp) diode, making the IC especially suitable for driving inductive loads safely without additional external protection components. The DIP-16 through-hole package allows easy handling, breadboard use, and straightforward PCB mounting, making it ideal for prototyping, educational, and industrial control applications.

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Features

• Seven NPN Darlington transistor channels
• High current capability (up to 500 mA per channel)
• Output voltage rating up to 50 V
• Built-in clamp diodes for inductive load protection
• Logic-level compatible inputs (TTL and CMOS)
• Open-collector outputs
• Common emitter configuration
• Low input current requirement
• DIP-16 package for easy prototyping and PCB assembly

Applications

• Relay and solenoid drivers
• Stepper motor and DC motor control
• LED and lamp driving circuits
• Display segment and indicator drivers
• Microcontroller and logic IC interfacing
• Industrial automation and control systems
• Robotics and embedded projects

uln2003-ic-datasheet