Details, datasheet, quote on part number: UDN2987A
CategoryDiscrete => Solid State relays => Relay/Solenoid/Lamp
Description8-Channel Source Driver With Over-current Protection
CompanyAllegro Micro Systems, Inc.
DatasheetDownload UDN2987A datasheet
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Features, Applications

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, solenoids, LEDs, and incandescent lamps. The device includes thermal shutdown and output transient protection/clamp diodes for use with sustaining voltages 35 V.

In these drivers, each channel includes a latch to turn OFF that channel if the maximum channel current is exceeded. All channels are disabled if the thermal shutdown is activated. A common FAULT output is used to indicate either chip thermal shutdown or any overcurrent 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 latches are reset. Under normal operating conditions, each of eight outputs will source in excess 100 mA continuously at an ambient temperature of 25C and a supply 35 V. The over-current fault circuit will protect the device from short-circuits to ground with supply voltages 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 by an active high input level. The UDN2987A is supplied a 20-pin dual in-line plastic package; the UDN2987LW is supplied a 20-lead small-outline plastic package.

Note that the UDN2987A (DIP) and the UDN2987LW (SOIC) are electrically identical and share a common terminal number assignment.

Driver Supply Voltage, VS..................... 35 V Output Sustaining Voltage, VCE(sus)...... 35 V Continuous Output Current, IOUT........................................ -500 mA* FAULT Output Voltage, VCE................. 35 V FAULT Output Current, lC................. 30 mA Input Voltage, VIN.................................. 15 V Package Power Dissipation, PD........................................ See Graph Operating Temperature Range, TA................................. to +85C Storage Temperature Range, TS............................... to +150C


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

115 Northeast Cutoff, Box 15036 Worcester, Massachusetts (508) 853-5000 Copyright 1987, 2003 Allegro MicroSystems, Inc.

Characteristic Functional Supply Range Output Leakage Current Output Sustaining Voltage Output Saturation Voltage Symbol VS ICEX VOUT(sus) VOUT(SAT) VIN 0.4 V* IOUT = -350 mA, 2.0 mH VIN 2.4 V, IOUT -100 mA VIN 2.4 V, IOUT -225 mA VIN 2.4 V, IOUT -350 mA Channel Shutdown Threshold FAULT Leakage Current FAULT Saturation Voltage Input Voltage IM ICEX VCE(SAT) VIN(ON) VIN(OFF) Input Current IIN(ON) VIN 2.4 V VIN 5.0 V VIN 12 V IIN(OFF) Clamp Diode Leakage Current Clamp Diode Forward Voltage Supply Current IR VF IS(ON) IS(OFF) Thermal Shutdown Thermal Hysteresis Propagation Delay Time TJ tPLH tPHL Dead Time *AII inputs simultaneously. = 100 VIN 350 mA VIN = 2.4 V*, Outputs Open VIN 0.4 V* VIN 2.4 V VCC 30 mA Test Conditions Min. Typ. Limits Max. Units C s


Some Part number from the same manufacture Allegro Micro Systems, Inc.
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