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HighVoltage HighCurrent Darlington Transistor Array
The ULN2803A device is a 50 V 500 mA Darlington transistor array. The device consists of eight NPN Darlington pairs that feature highvoltage outputs with commoncathode clamp diodes for switching inductive loads. The collectorcurrent 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 k series base resistor for each Darlington pair for operation directly with TTL or 5 V CMOS devices.
- 500 mA Rated Collector Current Single Output)
- HighVoltage Outputs: 50 V
- Output Clamp Diodes
- Inputs Compatible With Various Types of Logic
