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2985
8-CHANNEL SOURCE DRIVER
1 2 3 4 5 6 7 8 VS 18 17 16 15 14 13 12 11
GND
Recommended for applications requiring separate logic and load grounds, load supply voltages to 30 V, and load currents to 250 mA, the UDN2985A source driver is used as an interface between standard low-power digital logic and LEDs, relays, and solenoids. The outputs feature saturated transistors for low collector-emitter saturation voltages. The UDN2985A driver is for use with 5 V logic systems: TTL, Schottky TTL, DTL, and CMOS. This device has a minimum output breakdown rating of 30 V with a minimum output sustaining voltage of 15 V. The output is switched on by an active-high input level. Under normal operating conditions, this device can source up to 120 mA for each of the eight outputs at an ambient temperature of 75C and a supply voltage of 15 V. It incorporates input current-limiting resistors and output transient-suppression diodes. The UDN2985A source driver is supplied in an 18-pin dual in-line package. All inputs are on one side of the package, output pins on the other, to simplify printed wiring board layout.
Data Sheet 29310.2A
Dwg. No. A-10,243
FEATURES
I I I I I TTL, DTL, or CMOS Compatible Inputs 250 mA Output Source Current Capability Output Transient-Suppression Diodes 30 V Minimum Output Breakdown Voltage Low Output-Saturation Voltage
ABSOLUTE MAXIMUM RATINGS at TA = 25C
Driver Supply Voltage, VS .................. 30 V Continuous Output Current, IOUT ........................................ -250 mA Input Voltage, VIN ............................... 20 V Package Power Dissipation, PD .............................................. 2.2 W* Operating Temperature Range, TA ............................... -20C to +85C Storage Temperature Range, TS ............................... -55C to +150C *Derate at the rate of 18 mW/C above TA= 25C.
PARTIAL SCHEMATIC DIAGRAM
1 of 8 DRIVERS
Dwg. No. DS-1013
Always order by complete part number: UDN2985A .
2985 8-CHANNEL SOURCE DRIVER
ELECTRICAL CHARACTERISTICS at TA = 25C, VS = 30 V (unless otherwise noted).
Limits Characteristics Output Leakage Current Output Sustaining Voltage Output Saturation Voltage Symbol ICEX VCE(sus) VCE(SAT) Test Conditions VIN = 0.4 V, VOUT = 0 V lOUT = -120 mA, L = 3 mH VIN = 2.4, lOUT = -60 mA VIN = 2.4, lOUT = -120 mA Input Current Voltage IIN(ON) VIN = 2.4 V VIN = 5.0 V IIN(OFF) Supply Current (outputs open) Clamp Diode Leakage Current Clamp Diode Foward Voltage Turn-On Delay Turn-Off Delay IS IR VF tON tOFF VIN = 0.4 V VS = 30 V, VIN = 2.4 V VR = 30 V, TA = 70C IF = 120 mA Min. -- 15 -- -- -- -- -- -- Typ. <-1.0 -- 0.8 0.9 90 280 10 10 Max. -100 -- 1.1 1.2 225 650 15 15 Units A V V V A A A mA A V s s
--
<1.0
50
--
1.1
2.0
-- --
0.5 5.0
1.0 10
NOTE: Negative current is defined as coming out of (sourcing) the specified device pin.
COMMON-CATHODE LED DRIVER
Dwg. No. DS-1014
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright (c) 1984, 2000 Allegro MicroSystems, Inc.
2985 8-CHANNEL SOURCE DRIVER
Dimensions in Inches
(controlling dimensions)
18 10 0.014 0.008
0.430 0.280 0.240
MAX
0.300
BSC
1
0.070 0.045
0.100 0.920 0.880
BSC
9
0.005
MIN
0.210
MAX
0.015
MIN
0.150 0.115 0.022 0.014
Dwg. MA-001-18A in
Dimensions in Millimeters
(for reference only)
18 10 0.355 0.204
10.92 7.11 6.10
MAX
7.62
BSC
1
1.77 1.15
2.54 23.37 22.35
BSC
9
0.13
MIN
5.33
MAX
0.39
MIN
3.81 2.93 0.558 0.356
Dwg. MA-001-18A mm
NOTES: 1. 2. 3. 4.
Exact body and lead configuration at vendor's option within limits shown. Lead spacing tolerance is non-cumulative. Lead thickness is measured at seating plane or below. Supplied in standard sticks/tubes of 21 devices.
2985 8-CHANNEL SOURCE DRIVER
POWER SOURCE DRIVERS
IN ORDER OF 1) OUTPUT CURRENT, 2) OUTPUT VOLTAGE, 3) NUMBER OF DRIVERS
Output Ratings * mA -25 V 60 60 60 # 8 10 12 Serial Input - X X
Features Latched Diode Saturated Drivers Clamp Outputs X - - X active pull-down - X active pull-down -
Internal Protection - - -
Part Number 5815 5810-F and 6809/10 5811 and 6811
60 20 X X active pull-down - - 5812-F and 6812 60 32 X X active pull-down - - 5818-F and 6818 85 8 - - - - - 6118 -120 -25 8 - - X X - 2585 30 8 - - X X - 2985 50 8 X X X X - 5895 -350 35 8 - - X - X 2987 50 8 - - X - - 2981 and 2982 50 8 X X X - - 5891 -50 8 - - X - - 2580 80 8 - - X - - 2983 and 2984 80 8 X X X - - 5890 -80 8 - - X - - 2588 -500 6 1 - - - MOSFET X 2525 and 2535 6 2 - - - MOSFET X 2526 and 2536 -4000 60 4 - - X - - 2944 * Current is maximum specified test condition, voltage is maximum rating. See specification for sustaining voltage limits or over-current protection voltage limits. Complete part number includes additional characters to indicate operating temperature range and package style.
The products described here are manufactured under one or more U.S. patents or U.S. patents pending. Allegro MicroSystems, Inc. reserves the right to make, from time to time, such departures from the detail specifications as may be required to permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that the information being relied upon is current. Allegro products are not authorized for use as critical components in life-support devices or systems without express written approval. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, Inc. assumes no responsibility for its use; nor for any infringement of patents or other rights of third parties which may result from its use.
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000

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