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ULN2074B Specifications

Detailed technical information and Application Scenarios

Product Details

PartNumberManufactorQuantityAvailability
ULN2074BSPRAGUE195Yes

ULN2074B is a high-voltage, high-current Darlington transistor array manufactured by STMicroelectronics (STM).

The ULN2074B is a high-voltage, high-current Darlington transistor array manufactured by STMicroelectronics (STM).

Specifications:

  • Configuration: Quad Darlington array (4 channels)
  • Output Current per Channel: 500 mA (continuous)
  • Peak Output Current: 600 mA
  • Output Voltage: 50 V
  • Input Voltage (Logic Compatible): 5 V TTL/CMOS
  • Input Current per Channel: ~1.5 mA
  • Saturation Voltage (VCE(sat)): ~1.1 V (at 350 mA)
  • Power Dissipation: 1.25 W per driver
  • Operating Temperature Range: -40°C to +85°C
  • Package: 16-pin DIP, SO-16

Descriptions & Features:

  • Designed for driving high-current loads such as relays, lamps, solenoids, and stepper motors.
  • Each channel includes a freewheeling diode for inductive load protection.
  • TTL/CMOS-compatible inputs simplify interfacing with microcontrollers and logic circuits.
  • High-voltage and high-current capability in a compact package.
  • Internal suppression diodes for transient voltage protection.
  • Common-cathode clamp diodes for inductive kickback protection.

The ULN2074B is a reliable driver IC widely used in industrial and automotive applications for switching inductive and resistive loads.

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