The ULN2001A is obsolete

and is no longer supplied.

ULN2001A, ULN2002A, ULN2003A, ULN2004A, ULQ2003A, ULQ2004A

HIGHVOLTAGE HIGHCURRENT

DARLINGTON TRANSISTOR ARRAY

SLRS027G − DECEMBER 1976 − REVISED JUNE 2004

2

POST OFFICE BOX 655303

description/ordering information (continued)

The ULN2001A is a general-purpose array and can be used with TTL and CMOS technologies. The ULN2002A

is designed specifically for use with 14-V 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 and ULQ2003A have a 2.7-k

Ω

series base resistor for each Darlington pair for operation directly with TTL or 5-V CMOS devices. The

ULN2004A and ULQ2004A have a 10.5-k

Ω series base resistor to allow operation directly from CMOS devices

that use supply voltages of 6 V to 15 V. The required input current of the ULN/ULQ2004A is below that of the

ULN/ULQ2003A, and the required voltage is less than that required by the ULN2002A.

logic diagram

7C

6C

5C

4C

3C

2C

1C

COM

7

6

5

4

3

2

1

7B

6B

5B

4B

3B

2B

1B

10

11

12

13

14

15

16

9