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The ULN2002AN is a high-voltage, high-current Darlington transistor array manufactured by Texas Instruments. It contains seven open-collector Darlington pairs with common emitters within a single package. Each channel provides an output current rating of 500 mA and can withstand peak currents up to 600 mA. The device supports a maximum collector-emitter voltage (Vceo) of 50 V and operates within a temperature range of -20 °C to +70 °C. It is housed in a 16-pin PDIP through-hole package designed for robust thermal performance.
Verify the specific manufacturer source when ordering, as multiple vendors distribute this component. Confirm that the received unit matches the ULN2002AN designation to ensure correct PMOS interface compatibility. Check the package type to confirm it is the 16-pin DIP variant rather than the SO-16 surface mount version.
Select the ULN2002AN specifically when the control logic operates within the 14 V to 25 V PMOS voltage range. For applications requiring 5 V TTL or CMOS inputs, the ULN2003AN is the appropriate alternative. Ensure the load current does not exceed the 500 mA continuous rating per channel to maintain reliable operation.
This component belongs to the ULN200x series of high-voltage Darlington arrays from Texas Instruments. The series includes variants tailored for different logic families: ULN2001 for general purpose, ULN2002 for PMOS, ULN2003 for TTL/CMOS, and ULN2004 for higher voltage CMOS/PMOS. All share the same internal architecture but differ in input resistor values.
The ULN2002A is the direct equivalent part number for the ULN2002AN. Other compatible alternatives include the ULQ2002A and generic equivalents such as the STMicroelectronics STD2002AP.