ULN2001A, ULN2002A, ULN2003A, ULN2004A
DARLINGTON TRANSISTOR ARRAYS
SLRS027 – DECEMBER 1976 – REVISED APRIL 1993
HIGH-VOLTAGE HIGH-CURRENT DARLINGTON TRANSISTOR ARRAYS
D
D
D
D
D
D
500-mA Rated Collector Current
(Single Output)
High-Voltage Outputs . . . 50 V
Output Clamp Diodes
Inputs Compatible With Various Types of
Logic
Relay Driver Applications
Designed to Be Interchangeable With
Sprague ULN2001A Series
D OR N PACKAGE
(TOP VIEW)
description
1B
2B
3B
4B
5B
6B
7B
E
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1C
2C
3C
4C
5C
6C
7C
COM
The ULN2001A, ULN2002A, ULN2003A, and ULN2004A are monolithic high-voltage, high-current Darlington
transistor arrays. Each consists of seven npn Darlington pairs that feature high-voltage outputs with
common-cathode clamp diodes for switching inductive loads. The collector-current rating of a single Darlington
pair is 500 mA. The Darlington pairs may be paralleled for higher current capability. Applications include relay
drivers, hammer drivers, lamp drivers, display drivers (LED and gas discharge), line drivers, and logic buffers.
For 100-V (otherwise interchangeable) versions, see the SN75465 through SN75469.
The ULN2001A is a general-purpose array and can be used with TTL and CMOS technologies. The ULN2002A
is specifically designed for use with 14- to 25-V PMOS devices. Each input of this device has a zener diode and
resistor in series to control the input current to a safe limit. The ULN2003A has a 2.7-kΩ series base resistor
for each Darlington pair for operation directly with TTL or 5-V CMOS devices. The ULN2004A has a 10.5-kΩ
series base resistor to allow its operation directly from CMOS devices that use supply voltages of 6 to 15 V. The
required input current of the ULN2004A is below that of the ULN2003A, and the required voltage is less than
that required by the ULN2002A.
logic symbol
†
9
CLAMP
1
1B
2B
3B
4B
5B
6B
7B
2
3
4
5
6
7
16
15
14
13
12
11
10
COM
1C
2C
3C
4C
5C
6C
7C
logic diagram
9
1B
1
16
COM
1C
2B
2
15
2C
3B
3
14
3C
4B
4
13
4C
† This symbol is in accordance with ANSI/IEEE Std 91-1984
and IEC Publication 617-12.
5B
5
12
5C
6B
6
11
6C
7B
7
10
7C
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.
Copyright
©
1993, Texas Instruments Incorporated
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
1
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