ULN2804A
DARLINGTON TRANSISTOR ARRAY
SLLS311 – JUNE 1998
HIGH-VOLTAGE, HIGH-CURRENT DARLINGTON TRANSISTOR ARRAY
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
Compatible With ULN2800A-Series
N DUAL-IN-LINE PACKAGE
(TOP VIEW)
1C
18
2C
17
3C
16
4C
15
5C
14
6C
13
7C
12
8C COM
11 10
1
1B
2
2B
3
3B
4
4B
5
5B
6
6B
7
7B
8
9
8B GND
description
The ULN2804A is a monolithic high-voltage, high-current Darlington transistor array, comprising eight npn
Darlington pairs. All units feature high-voltage outputs with common-cathode clamp diodes for switching
inductive loads. The collector-current rating of each Darlington pair is 500 mA. Outputs and inputs can each 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.
The ULN2804A has an approximate 10.5-kΩ series input resistor to allow its operation directly from CMOS or
PMOS, utilizing supply voltages of 6 to 15 volts.
The ULN2804A is characterized for operation from –20°C to 85°C.
schematic (each Darlington pair)
COM
10.5k
Output C
Input B
7.2k
3k
E
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.
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
©
1998, Texas Instruments Incorporated
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
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