ULN2803A Eight Darlington Arrays

by Element 14
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The ULN2803A contains eight Darlington transistors with common emitters and integral suppression diodes for inductive loads. Each Darlington features a peak load current rating of 600 mA (500 mA continuous) and can withstand at least 50 V in the OFF state. Outputs may be paralleled for higher current capability. The ULN2803A has a 2.7 kΩ input resistor for 5 V TTL and CMOS.

The ULN2803A is supplied in an 18-lead plastic DIP with a copper lead form and features the convenient input-opposite-output pinout to simplify board layout.

Key Features

  • Eight Darlington transistors with common emitters
  • Output current to 500 mA
  • Output voltage to 50 V
  • Integral suppression diodes
  • Versions for all popular logic families
  • Output can be paralleled
  • Inputs pinned opposite outputs to simplify board layout

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