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8-CHANNEL SOURCE DRIVER
Recommended applications requiring separate logic load grounds, load supply voltages load currents UDN2985A source driver used interface between standard low-power digital logic LEDs, relays, solenoids. outputs feature saturated transistors collector-emitter saturation voltages. UDN2985A driver with logic systems-TTL, Schottky TTL, DTL, CMOS. This device minimum output breakdown rating with minimum output sustaining voltage output switched active-high input level. Under normal operating conditions, this device source each eight outputs ambient temperature 75°C supply voltage incorporates input current-limiting resistors output transient-suppression diodes. UDN2985A source driver supplied 18-pin dual in-line package. inputs side package, output pins other, simplify printed wiring board layout.
Data Sheet 29310.2A
Dwg. A-10,243
FEATURES
ABSOLUTE MAXIMUM RATINGS 25°C
Driver Supply Voltage, Continuous Output Current, IOUT -250 Input Voltage, Package Power Dissipation, Operating Temperature Range, -20°C +85°C Storage Temperature Range, -55°C +150°C
DRIVERS
TTL, DTL, CMOS Compatible Inputs Output Source Current Capability Output Transient-Suppression Diodes Minimum Output Breakdown Voltage Output-Saturation Voltage
PARTIAL SCHEMATIC DIAGRAM
Dwg. DS-1013
*Derate rate mW/°C above 25°C.
Always order complete part number: UDN2985A
2985 8-CHANNEL SOURCE DRIVER
ELECTRICAL CHARACTERISTICS 25°C, (unless otherwise noted).
Limits Characteristics Output Leakage Current Output Sustaining Voltage Output Saturation Voltage Symbol ICEX VCE(sus) VCE(SAT) Test Conditions VOUT lOUT -120 2.4, lOUT 2.4, lOUT -120 Input Current Voltage IIN(ON) IIN(OFF) Supply Current (outputs open) Clamp Diode Leakage Current Clamp Diode Foward Voltage Turn-On Delay Turn-Off Delay tOFF 70°C Min. Typ. <-1.0 Max. -100 Units
<1.0
NOTE: Negative current defined coming (sourcing) specified device pin.
COMMON-CATHODE DRIVER
Dwg. DS-1014
Northeast Cutoff, 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright 1984, 2004 Allegro MicroSystems, Inc.
2985 8-CHANNEL SOURCE DRIVER
Dimensions Inches
(controlling dimensions)
0.014 0.008
0.430 0.280 0.240
0.300
0.070 0.045
0.100 0.920 0.880
0.005
0.210
0.015
0.150 0.115 0.022 0.014
Dwg. MA-001-18A
Dimensions Millimeters
(for reference only)
0.355 0.204
10.92 7.11 6.10
7.62
1.77 1.15
2.54 23.37 22.35
0.13
5.33
0.39
3.81 2.93 0.558 0.356
Dwg. MA-001-18A
NOTES: Exact body lead configuration vendor's option within limits shown. Lead spacing tolerance non-cumulative. Lead thickness measured seating plane below.
2985 8-CHANNEL SOURCE DRIVER
Allegro MicroSystems, Inc. reserves right make, from time time, such departures from detail specifications required permit improvements design products. information included herein believed accurate reliable. However, Allegro MicroSystems, Inc. assumes responsibility use; infringements patents other rights third parties which result from use.
Northeast Cutoff, 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
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