User Manual

The ULN2001A is obsolete
a
nd is no longer supplied.
     
 
  
SLRS027G − DECEMBER 1976 − REVISED JUNE 2004
2
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
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-kΩ
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-kΩ 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