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The ULN2002A, ULN2003A and ULN2004A are high voltage, high current Darlington arrays each containing seven open collector common emitter pairs. Each pair is rated at 500mA. Suppression diodes are included for inductive load driving, the inputs and outputs are pinned in opposition to simplify board layout.
Device options are designed to be compatible with common logic families:
ULN2002A (14-25V PMOS)
ULN2004A (6-15V CMOS, PMOS)
These devices are capable of driving a wide range of loads including solenoids, relays, DC motors; LED displays filament lamps, thermal print-heads and high power buffers.
The ULN2002A, 2003A and 2004A are supplied in a small outline 16 pin package (SO-16).


  • 500mA rated collector current (single output)
  • High voltage outputs: 50V
  • Output clamp diodes
  • Inputs compatible with popular logic types
  • Relay driver applications
  • “Green” Molding Compound (No Br, Sb)
  • Totally Lead-Free & Fully RoHS Compliant
  • Halogen and Antimony Free. “Green” Device

Product Specifications

Product Parameters

Numberof Drivers 7
Input Compatibility 5V TTL CMOS
InputVoltageMax (V) 30 V
Collector to EmitterVoltage Rating (V) 50 V
OutputVoltage Max (V) 50 V
OutputCurrentMax (mA) 500 mA
DelayTime Typ (ns) 250 ns
OperatingTemperatureRange  (°C) -40 to 105 °C

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Orderable Part Number Buy from Distributor / Contact Sales Request Samples


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Digi-Key Electronics 3452 10/4/2022 Europe, Asia, North America Buy Now
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Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN # Issue Date Implementation Date Subject
PCN-2594 2022-08-31 2023-02-28 Device End of Life (EOL)
PCN-2490 2020-10-22 2021-01-22 Additional Wafer Source (LiteOn Semiconductor Corp.)