20
1
IN
1
IN 2
2
19
IN 3
18
3
IN 4
4
17
IN 5
5
16
IN 6
6
15
IN 7
7
14
13
IN 8
8
x8
9
12
FAULT
OE
N
OE
FF
10
OE/R
SENSE
11
N
Dwg. PP-067
Note that the UDN2987A (DIP) and the UDN2987LW
(SOIC) are electrically identical and share a common
terminal number assignment.
Driver Supply Voltage, V
..................... 35 V
S
Output Sustaining Voltage, V
...... 35 V
CE(sus)
Continuous Output Current,
I
........................................ -500 mA*
OUT
FAULT Output Voltage, V
................. 35 V
CE
FAULT Output Current, l
................. 30 mA
C
Input Voltage, V
................................. 15 V
IN
Package Power Dissipation,
P
........................................ See Graph
D
Operating Temperature Range,
T
................................. -20 C to +85 C
A
Storage Temperature Range,
T
............................... -55 C to +150 C
S
* Outputs are disabled at approximately -500 mA
per driver.
2987
8-CHANNEL SOURCE DRIVER
WITH OVER-CURRENT PROTECTION
Providing over-current protection for each of its eight sourcing
outputs, the UDN2987A and UDN2987LW drivers are used as an
interface between standard low-level logic and relays, motors, sole-
OUT
1
noids, LEDs, and incandescent lamps. The device includes thermal
shutdown and output transient protection/clamp diodes for use with
OUT 2
sustaining voltages to 35 V.
OUT 3
In these drivers, each channel includes a latch to turn OFF that
OUT 4
channel if the maximum channel current is exceeded. All channels are
disabled if the thermal shutdown is activated. A common FAULT
OUT 5
output is used to indicate either chip thermal shutdown or any over-
OUT 6
current condition. All outputs are enabled by pulling the common OE/
R input high. When OE/R is low, all outputs are inhibited and the eight
OUT 7
latches are reset.
OUT 8
Under normal operating conditions, each of eight outputs will
source in excess of 100 mA continuously at an ambient temperature of
GROUND
25 C and a supply of 35 V. The over-current fault circuit will protect
V
the device from short-circuits to ground with supply voltages of up to
S
35 V.
The inputs are compatible with 5 V and 12 V logic systems—TTL,
Schottky TTL, DTL, PMOS, and CMOS. In all cases, the output is
switched ON by an active high input level. The UDN2987A is supplied
in a 20-pin dual in-line plastic package; the UDN2987LW is supplied in
a 20-lead small-outline plastic package.
350 mA Output Source Current
Over-Current Protected
Internal Ground Clamp Diodes
Output Breakdown Voltage 35 V, Minimum
TTL, DTL, PMOS, or CMOS Compatible Inputs
Internal Thermal Shutdown
Automotive Capable
Always order by complete part number:
Part Number
UDN2987A
UDN2987LW
Package
20-Pin DIP
20-Lead Wide-Body SOIC