2981
AND
2982
UDN2981A
1
2
3
4
5
6
7
8
V
S
18
17
16
15
14
13
12
11
GND
8-CHANNEL SOURCE DRIVERS
Recommended for high-side switching applications that benefit from
separate logic and load grounds, these devices encompass load supply
voltages to 80 V and output currents to -500 mA. These 8-channel source
drivers are useful for interfacing between low-level logic and high-current
loads. Typical loads include relays, solenoids, lamps, stepper and/or servo
motors, print hammers, and LEDs.
All devices may be used with 5 V logic systems — TTL, Schottky TTL,
DTL, and 5 V CMOS. The UDN2981A, UDN2982A, and A2982SLW are
electrically interchangeable, will withstand a maximum output off voltage of
50 V, and operate to a minimum of 5 V. All devices in this series integrate
input current limiting resistors and output transient suppression diodes, and
are activated by an active high input.
The suffix ‘A’ (all devices) indicates an 18-lead plastic dual in-line
package with copper lead frame for optimum power dissipation. Under
normal operating conditions, these devices will sustain 120 mA continuously
for each of the eight outputs at an ambient temperature of +50°C and a supply
of 15 V.
The suffix ‘LW’ (UDN2982LW only) indicates an 18-lead surface-
mountable wide-body SOIC package; the A2982SLW is provided in a 20-lead
wide-body SOIC package with improved thermal characteristics.
The UDN2982A, UDN2982LW and A2982SLW drivers are also avail-
able for operation over an extended temperature range to -40°C. To order,
change the prefix ‘UDN’ to ‘UDQ’ or the suffix ‘SLW’ to ‘ELW’.
Data Sheet
29310E
Dwg. No. A-10, 243
Note that the UDN2980A series (dual in-line
package) and UDN2980LW series (small-outline
IC package) are electrically identical and share a
common terminal number assignment.
FEATURES
ABSOLUTE MAXIMUM RATINGS
at 25°C Free-Air Temperature
Output Voltage Range, V
CE . . . . . . . . .
5 V to 50 V
Input Voltage, V
IN
(UDN2981A) . . . . . . . . . . . . . . . . . . . . . .
15 V
(UDN2982A, UDN2982LW, and
A2982SLW) . . . . . . . . . . . . . . . . . . . . . . .
20 V
Output Current, I
OUT
. . . . . . . . . . . . . .
-500 mA
Package Power Dissipation,
P
D
. . . . . . . . . . . . . . . . . . . . . . .
See Graph
Operating Temperature Range,
T
A
. . . . . . . . . . . . . . . . . . . .
-20
°
C to +85
°
C
Storage Temperature Range,
T
S
. . . . . . . . . . . . . . . . . . .
-55
°
C to +150
°
C
s
s
s
s
s
TTL, DTL, PMOS, or CMOS Compatible Inputs
500 mA Output Source Current Capability
Transient-Protected Outputs
Output Breakdown Voltage to 80 V
DIP or SOIC Packaging
Always order by complete part number, e.g.,
UDN2981A
.
Note that all devices are not available in all package styles.
2981
AND
2982
8-CHANNEL
SOURCE DRIVERS
ELECTRICAL CHARACTERISTICS at T
A
= +25
°
C (unless otherwise specified).
Applicable
Characteristic
Output Leakage Current
Output Sustaining
Voltage
Collector-Emitter
Saturation Voltage
Symbol
I
CEX
V
CE(SUS)
V
CE(SAT)
Devices
All
All
Test Conditions
V
IN
= 0.4 V*, V
S
= 50 V, T
A
= +70°C
I
OUT
= -45 mA
V
IN
= 2.4 V, I
OUT
= -100 mA
V
IN
= 2.4 V, I
OUT
= -225 mA
V
IN
= 2.4 V, I
OUT
= -350 mA
V
IN
= 2.4 V
V
IN
= 3.85 V
V
IN
= 2.4 V
V
IN
= 12 V
V
IN
= 2.4 V, V
CE
= 2.0 V
V
IN
= 2.4 V, V
CE
= 2.0 V
V
IN
= 2.4 V*, V
S
= 50 V
V
R
= 50 V, V
IN
= 0.4 V*
I
F
= 350 mA
0.5 E
IN
to 0.5 E
OUT
, R
L
= 100Ω,
V
S
= 35 V
0.5 E
IN
to 0.5 E
OUT
, R
L
= 100Ω,
V
S
= 35 V, See Note
Test
Fig.
1
—
Min.
—
35
Limits
Typ.
—
—
Max.
200
—
Units
µA
V
All
2
2
2
3
3
3
3
2
2
4
—
—
—
—
—
—
—
-350
-350
—
1.6
1.7
1.8
140
310
140
1.25
—
—
—
1.8
1.9
2.0
200
450
200
1.93
—
—
10
V
V
V
µA
µA
µA
mA
mA
mA
mA
µA
V
µs
µs
Input Current
I
IN(ON)
UDN2981A
2982†
Output Source Current
(Outputs Open)
Supply Current
Leakage Current
Clamp Diode
Clamp Diode
Turn-On Delay
l
OUT
UDN2981A
2982†
I
S
I
R
V
F
t
ON
t
OFF
All
All
All
All
5
6
—
—
—
—
—
1.5
1.0
50
2.0
2.0
Turn-Off Delay
All
—
—
5.0
10
NOTES: Turn-off delay is influenced by load conditions. Systems applications well below the specified output loading may require
timing considerations for some designs, i.e., multiplexed displays or when used in combination with sink drivers in a totem
pole configuration.
Negative current is defined as coming out of (sourcing) the specified device terminal.
* All inputs simultaneously.
† Complete part number includes a prefix (A or UDN) and a suffix (A or SLW) as follows:
UDN2981A, UDN2982A, UDN2982LW, or A2982SLW.
www.allegromicro.com
3
2981
AND
2982
8-CHANNEL
SOURCE DRIVERS
Allowable peak collector current
as a function of duty cycle
Series UDN2980A
500
500
450
450
ALLOWABLE PEAK COLLECTOR CURRENT IN mA AT 50°C
ALLOWABLE PEAK COLLECTOR CURRENT IN mA AT 70°C
400
RECOMMENDED MAXIMUM OUTPUT CURRENT
350
400
RECOMMENDED MAXIMUM OUTPUT CURRENT
350
3
300
300
3
4
5
6
4
250
5
6
8
NUMBER OF OUTPUTS
CONDUCTING
SIMULTANEOUSLY
250
7
200
200
NUMBER OF OUTPUTS
CONDUCTING
SIMULTANEOUSLY
150
7
8
150
100
V
S
= 35 V
100
V
S
= 35 V
50
50
0
0
10
20
30
50
60
40
PER CENT DUTY CYCLE
70
0
80
90
100
0
10
20
30
50
60
40
PER CENT DUTY CYCLE
70
80
90
100
Dwg. No. A-11,106B
Dwg. No. A-11,111B
UDN2981A and UDN2982A
500
500
450
450
ALLOWABLE PEAK COLLECTOR CURRENT IN mA AT 50°C
400
RECOMMENDED MAXIMUM OUTPUT CURRENT
350
ALLOWABLE PEAK COLLECTOR CURRENT IN mA AT 70°C
400
RECOMMENDED MAXIMUM OUTPUT CURRENT
350
300
3
4
300
3
250
250
5
7
6
8
NUMBER OF OUTPUTS
CONDUCTING
SIMULTANEOUSLY
4
5
200
200
6
7
8
150
150
NUMBER OF OUTPUTS
CONDUCTING
SIMULTANEOUSLY
100
V
S
= 15 V
100
V
S
= 15 V
50
50
0
0
10
20
30
50
60
40
PER CENT DUTY CYCLE
70
80
90
0
100
0
10
20
30
50
60
40
PER CENT DUTY CYCLE
70
80
90
100
Dwg. No. A-11,107B
Dwg. No. A-11,108B
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