UDN2981A 8-Channel Source Driver IC 5–50V 500mA DIP-18

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UDN2981A 8-Channel Source Driver IC 5–50V 500mA DIP-18 The UDN2981A is an 8-channel source driver designed for high-side switching applications and for interfacing low-level logic with high-current loads. The device is suitable for systems using 5V logic , including TTL, Schottky TTL, DTL, and 5V CMOS. It supports load supply voltages up to 50V and provides an output source-current capability of up to 500mA . The device integrates input current-limiting resistors and output transient-suppression diodes , with the outputs activated by an active-high input Features 8-channel source driver 500mA output source-current capability TTL, DTL, PMOS, and CMOS compatible inputs Transient-protected outputs Output breakdown voltage to 50V Active-high inputs Integrated input current-limiting resistors Integrated output transient-suppression diodes 18-pin DIP package for the UDN2981A Suitable for 5V logic systems Specifications Specification Value Part Number UDN2981A Device Type 8-Channel Source Driver Function High-Side Source Driver Number of Channels 8 Output Voltage Range 5 to 50 V Maximum Output Source Current -500 mA Output Source Current Capability 500 mA Continuous Output Current 120 mA per output under normal operating conditions at +50°C ambient temperature and 15 V supply Input Compatibility TTL, DTL, PMOS, CMOS Logic System Compatibility 5 V logic systems Input Activation Active High Input Voltage, Absolute Maximum (UDN2981) 25 V Output Leakage Current 200 µA max. at V IN = 0.4 V, V S = 50 V, T A = +70°C Output Sustaining Voltage 35 V min. at I OUT = -45 mA Collector-Emitter Saturation Voltage 1.8 V max. at V IN = 2.4 V, I OUT = -100 mA Collector-Emitter Saturation Voltage 1.9 V max. at V IN = 2.4 V, I OUT = -225 mA Collector-Emitter Saturation Voltage 2.0 V max. at V IN = 2.4 V, I OUT = -350 mA Input Current at V IN = 2.4 V 140 µA typ., 200 µA max. Input Current at V IN = 3.85 V 310 µA typ., 450 µA max. Output Source Current with Outputs Open -350 mA min. at V IN = 2.4 V, V CE = 2.0 V Supply Leakage Current 10 mA max. at V IN = 2.4 V, V S = 50 V Clamp Diode Current 50 µA max. at V R = 50 V, V IN = 0.4 V Clamp Diode Forward Voltage 1.5 V typ., 2.0 V max. at I F = 350 mA Turn-On Delay 1.0 µs typ., 2.0 µs max. Turn-Off Delay 5.0 µs typ., 10 µs max. Package 18-Pin Plastic DIP Package Suffix A Pb-Free Package 18-Pin DIP Maximum Junction Temperature 150°C Storage Temperature -55°C to +150°C Applications Relays Solenoids Lamps Stepper motors Servo motors Print hammers LEDs Package Content 1 x UDN2981A 8-Channel Source Driver IC 5–50V 500mA DIP-18 DataSheet UDN2981A