Allegro UDQ2984LW, UDQ2984A, UDQ2983A, UDQ2982LW, UDQ2982A Datasheet

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, UDN2982LW, and
A2982SLW are electrically interchangeable, will withstand a maximum
output off voltage of 50 V, and operate to a minimum of 5 V; the UDN2983A,
UDN2984A, UDN2984LW, and A2984SLW drivers are electrically inter­changeable, will withstand an output voltage of 80 V, and operate to a
minimum of 35 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 and UDN2984LW only) indicates an 18­lead surface-mountable wide-body SOIC package; the A2982SLW and
A2984SLW are provided in a 20-lead wide-body SOIC package with im­proved thermal characteristics.

The UDN2982A, UDN2982LW, A2982SLW, UDN2984A,
UDN2984LW, and A2984SLW drivers are also available for operation over
an extended temperature range to -40°C. To order, change the prefix ‘UDN’
to ‘UDQ’ or the suffix ‘SLW’ to ‘ELW’.

FEATURES

■ 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

8-CHANNEL SOURCE DRIVERS

Always order by complete part number, e.g., UDN2981A .

Note that all devices are not available in all package styles.

ABSOLUTE MAXIMUM RATINGS

at 25°C Free-Air Temperature

Output Voltage Range, V

CE

(UDN2981A, UDN2982A,
UDN2982LW, and A2982SLW)

. . 5 V to 50 V
(UDN2983A, UDN2984A,
UDN2984LW, and A2984SLW) .

35 V to 80 V

Input Voltage, V

IN

(UDN2981A and UDN2983A) . . . . . . . . .

15 V

(UDN2982A, UDN2984A,
UDN2982LW, UDN2984LW,

A2982SLW, and A2984SLW) . . . . . . . . .

20 V

Output Current, I

OUT

. . . . . . . . . . . . . . -500 mA

Package Power Dissipation,

PD . . . . . . . . . . . . . . . . . . . . . . . See Graph

Operating Temperature Range,

T

A

. . . . . . . . . . . . . . . . . . . . -20°C to +85°C

Storage Temperature Range,

T

S

. . . . . . . . . . . . . . . . . . . -55°C to +150°C

Data Sheet

29310D*

1

2

3

4

5

6

7

8

V

S

GND

11

12

13

14

15

16

17

18

UDN2981A thru UDN2984A

Dwg. No. A-10, 243

2981

THRU

2984

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.

2981

THRU

2984

8-CHANNEL
SOURCE DRIVERS

115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]

2

A2982SLW and A2984SLW

13

14

15

16

17

19

12

18

20

11

NO
CONNECTION

1

2

3

8

9

4

5

6

7

10

NO

CONNECTION

NC

NC

Dwg. PP-064-2

GROUND+V

S

50 75 100 125 150

2.5

0.5

0

ALLOWABLE PACKAGE POWER DISSIPATION IN WATTS

AMBIENT TEMPERATURE IN °C

2.0

1.5

1.0

25

Dwg. GP-022-4

18-LEAD SOIC, R

θJA

= 80°C/W

20-LEAD SOIC, R

θJA

= 70°C/W

18-PIN DIP, R

θJA

= 60°C/W

One of Eight Drivers

OUTPUT

7.2 K

3 K

20 K

V

5

1.5 K

2983/84 ONLY

INPUT

GROUND

9

Dwg. No. A-10,242B

W
Copyright © 1977, 2000 Allegro MicroSystems, Inc.

2981

THRU

2984

8-CHANNEL

SOURCE DRIVERS

www.allegromicro.com

3

Applicable Test Limits

Characteristic Symbol Devices Test Conditions Fig. Min. Typ. Max. Units

Output Leakage Current I

CEX

2981/82† VIN = 0.4 V*, VS = 50 V, TA = +70°C 1 — — 200 µA

2983/84† V

IN

= 0.4 V*, VS = 80 V, TA = +70°C 1 — — 200 µA

Output Sustaining V

CE(SUS)

2981/82† I

OUT

= -45 mA — 35 — — V

Voltage 2983/84† I

OUT

= -70 mA — 45 — — V

Collector-Emitter V

IN

= 2.4 V, I

OUT

= -100 mA 2 — 1.6 1.8 V

Saturation Voltage V

CE(SAT)

All VIN = 2.4 V, I

OUT

= -225 mA 2 — 1.7 1.9 V

V

IN

= 2.4 V, I

OUT

= -350 mA 2 — 1.8 2.0 V

Input Current 2981/83A VIN = 2.4 V 3 — 140 200 µA

I

IN(ON)

VIN = 3.85 V 3 — 310 450 µA

2982/84† V

IN

= 2.4 V 3 — 140 200 µA

VIN = 12 V 3 — 1.25 1.93 mA

Output Source Current l

OUT

2981/83A VIN = 2.4 V, VCE = 2.0 V 2 -350 — — mA

(Outputs Open) 2982/84† V

IN

= 2.4 V, VCE = 2.0 V 2 -350 — — mA

Supply Current I

S

2981/82† VIN = 2.4 V*, VS = 50 V 4 — — 10 mA

Leakage Current 2983/84† V

IN

= 2.4 V*, VS = 80 V 4 — — 10 mA

Clamp Diode I

R

2981/82† VR = 50 V, VIN = 0.4 V* 5 — — 50 µA

Forward Voltage 2983/84† VR = 80 V, VIN = 0.4 V* 5 — — 50 µA

Clamp Diode V

F

All IF = 350 mA 6 — 1.5 2.0 V

Turn-On Delay t

ON

All 0.5 EIN to 0.5 E

OUT

, RL = 100Ω, — — 1.0 2.0 µs

V

S

= 35 V

Turn-Off Delay t

OFF

All 0.5 EIN to 0.5 E

OUT

, RL = 100Ω, — — 5.0 10 µs

VS = 35 V, See Note

ELECTRICAL CHARACTERISTICS at TA = +25°C (unless otherwise specified).

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,
UDN2983A,
UDN2984A, UDN2984LW, or A2984SLW.