ULN2803A

DARLINGTON TRANSISTOR ARRAY

SLRS049E − FEBRUARY1997 − REVISED JULY 2006

1

POST OFFICE BOX 655303

Output)

Logic

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-k

Ω series base resistor for each Darlington pair for operation

directly with TTL or 5-V CMOS devices.

ORDERING INFORMATION

TA

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

ULN2803ADWR

ULN2803A

† Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are

available at www.ti.com/sc/package.

Copyright

 2006, 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.

1

2

3

4

5

6

7

8

9

18

17

16

15

14

13

12

11

10

1B

2B

3B

4B

5B

6B

7B

8B

GND

1C

2C

3C

4C

5C

6C

7C

8C

COM

DW OR N PACKAGE

(TOP VIEW)

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.