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High-Voltage, High-Current Darlington Transistor Array


Package | PIN: N | 16
Temp: S (-40 to 105)
Carrier: Partial Tube
Qty Price
1-9 $0.75
10-24 $0.66
25-99 $0.60
100-249 $0.51
250-499 $0.46
500-749 $0.36
750-999 $0.27
1000+ $0.24


  • 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

Texas Instruments  ULN2004AIN

The ULN2004AI is a high-voltage, high-current Darlington transistor array. This device consists of seven npn Darlington pairs that feature high-voltage outputs with common-cathode clamp diodes for switching inductive loads. The collector-current rating of a single Darlington pair is 500 mA. The Darlington pairs can be paralleled for higher-current capability. Applications include relay drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, and logic buffers.

The ULN2004AI has a 10.5-k. series base resistor for each Darlington pair for operation directly with TTL or 5-V CMOS devices.