ULN2803A (ACTIVE)

Darlington Transistor Array

 

Recommended alternative parts

  • TPL7407L  -  Better power efficiency, lower leakage and operating temperature range up to 125C

Description

The ULN2803A device is a 50 V, 500 mA 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.

Features

  • 500-mA-Rated Collector Current (Single Output)
  • High-Voltage Outputs: 50 V
  • Output Clamp Diodes
  • Inputs Compatible With Various Types of Logic

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Parametrics Compare all products in Peripheral Driver and Actuator

 
Drivers Per Package
Switching Voltage (Max) (V)
Peak Output Current (mA)
Delay Time (Typ) (ns)
Output Voltage (Max) (V)
Input Compatibility
Vol@Lowest Spec Current (Typ) (mV)
Iout/ch (Max) (mA)
Iout_off (Typ) (uA)
Rating
Pin/Package
ULN2803A SN75468 TPL7407L ULN2003A ULN2003V12 ULQ2003A-Q1
8    7    7    7    7    7   
50    50    40    50    16    50   
500    500    500    500    1000    500   
130    250    250    250    80    1000   
50    100    40    50    16    50   
CMOS
TTL   
CMOS
TTL   
CMOS
TTL   
CMOS
TTL   
CMOS    CMOS
TTL   
900    900    200    900    600    900   
500    500    600    500    140    500   
50    50    0.01    50    0.5    100   
Catalog    Catalog    Catalog    Catalog    Catalog    Automotive   
18SOIC    16PDIP
16SO
16SOIC   
16SOIC
16TSSOP   
16PDIP
16SO
16SOIC
16TSSOP   
16SOIC
16TSSOP   
16SOIC
16TSSOP