Product Description
DABIC-5 8-Channel Source Driver with Overcurrent ProtectionDescription:Providing overcurrent protection for each of its eight sourcing outputs, the UDN2987LW-6 driver is used as an interface between standard low-level logic and relays, motors, solenoids, LEDs, and incandescent lamps.
This device includes thermal shutdown and output transient protection/clamp diodes for use with sustaining voltages to 35 V.
In this driver, 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.
The OE/¯R function can be especially important during power-up, in preventing floating inputs from turning on the outputs.
Under normal operating conditions, each of eight outputs will source in excess of 100 mA continuously at an ambient temperature of 25°C and a supply of 35 V.
The overcurrent fault circuit will protect the device from short-circuits to ground with supply voltages of up to 30 V.
The inputs are compatible with 5 and 12 V logic systems: TTL, Schottky TTL, DTL, PMOS, and CMOS.
In all cases, the output is switched ON by an active high input level.
Compared to predecessor devices, the UDN2987LW-6 has a significantly faster TPHL (200 ns typical) and a lower driver supply voltage rating (4.75 V), which allows the use of 5 V logic.
The UDN2987LW-6 is supplied in a 20-lead small-outline (SOIC-W) plastic package.
All packages are lead (Pb) free, with 100% mattetin leadframe plating.
Features:• 4.75 to 35 V driver supply voltage• Output enable-disable (OE/R)• 350 mA output source current• Overcurrent protected• Internal ground clamp diodes• Output Breakdown Voltage 35 V minimum• TTL, DTL, PMOS, or CMOS compatible inputs• Internal Thermal Shutdown (TSD)
