ULN2803A Datasheet PDF - TI

The ULN2803A device is a high-voltage, high-current Darlington transistor array. The device consists of eight NPN Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads. The collector-current rating of each Darlington pair is 500 mA. The Darlington pairs may be connected in parallel for higher current capability.

●Applications include relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, and logic buffers. The ULN2803A device has a 2.7-kΩ series base resistor for each Darlington pair for operation directly with TTL or 5-V CMOS devices.

● 500-mA-Rated Collector Current

●(Single Output)

● High-Voltage Outputs: 50 V

● Output Clamp Diodes

● Inputs Compatible With Various

●Types of Logic

● Relay-Driver Applications

● Compatible with ULN2800A Series