SLRS049C − FEBRUARY1997 − REVISED AUGUST 2004
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POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
D 500-mA Rated Collector Current (Single
Output)
D High-Voltage Outputs ...50 V
D Output Clamp Diodes
D Inputs Compatible With Various Types of
Logic
D Relay Driver Applications
D Compatible with ULN2800A Series
description/ordering information
The ULN2803A is a high-voltage, high-current 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 has a 2.7-kΩ series base resistor for each Darlington pair for operation
directly with TTL or 5-V CMOS devices.
ORDERING INFORMATION
T
A
PACKAGE
†
ORDERABLE
PART NUMBER
TOP-SIDE
MARKING
PDIP (N) Tube of 20 ULN2803AN ULN2803AN
−40°C to 85°C
SOIC (DW)
Tube of 40 ULN2803ADW
ULN2803A
−40 C to 85 C
SOIC (DW)
Reel of 2000 ULN2003ADWR
ULN2803A
†
Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are
available at www.ti.com/sc/package.
Copyright 2004, Texas Instruments Incorporated
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
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1B
2B
3B
4B
5B
6B
7B
8B
GND
1C
2C
3C
4C
5C
6C
7C
8C
COM
DW OR N PACKAGE
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