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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, ULN2003A and ULN2004A are available in both a small outline 16-pin package (SO-16) and PDIP-16 package. 


  • Relay Driver
  • Stepping Motor Driver
  • Home Appliance
  • Industrial Application


  • 500mA Rated Collector Current (Single Output)
  • High Voltage Outputs: 50V
  • Output Clamp Diodes
  • Inputs Compatible with Popular Logic Types
  • Relay Driver Applications

Product Specifications

Product Parameters

Number of Drivers 7
Input Compatibility PMOS, CMOS, 6 to 15V
Input Voltage Max 30 V
Collector to Emitter Voltage Rating 50 V
Output Voltage Max 50 V
Output Current Max 500 mA
Delay Time Typ 250 ns
Operating Temperature Range -40 to 105 °C

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Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
ULN2004AD16-U Arrow Electronics 4892 8/8/2020 Buy Now United States
ULN2004AD16-U Digi-Key Electronics 4950 8/8/2020 Buy Now United States
ULN2004AD16-U Mouser Electronics Inc. 3530 8/8/2020 Buy Now United States
ULN2004AS16-13 Mouser Electronics Inc. 3968 8/8/2020 Buy Now United States
ULN2004AS16-13 Future Electronics - Asia 1260 8/7/2020 Singapore
ULN2004AS16-13 RS Components 100 8/7/2020 Buy Now England
ULN2004AS16-13 RS Components Ltd. 100 8/7/2020 Buy Now Japan
ULN2004AS16-13 CEAC International Ltd. 5000 8/4/2020 China