ULN2803A Darlington Transistor Array | TI.com

ULN2803A (ACTIVE)

Darlington Transistor Array

Darlington Transistor Array - ULN2803A
Datasheet
 

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 Low-side switches

 
Drivers Per Package
Switching Voltage (Max) (V)
Output Voltage (Max) (V)
Peak Output Current (mA)
Delay Time (Typ) (ns)
Input Compatibility
Vol@Lowest Spec Current (Typ) (mV)
Iout/ch (Max) (mA)
Iout_off (Typ) (uA)
Rating
Pin/Package
ULN2803A TPL7407LA ULN2003A ULQ2003A-Q1
8     7     7     7    
50     32     50     50    
50     30     50     50    
500     500     500     500    
130     250     250     1000    
CMOS
TTL    
CMOS
TTL    
CMOS
TTL    
CMOS
TTL    
900     210     900     900    
500     600     500     500    
50     0.01     50     100    
Catalog     Catalog     Catalog     Automotive    
18SOIC     16SOIC
16TSSOP    
16PDIP
16SO
16SOIC
16TSSOP    
16SOIC
16TSSOP