Combining logic gates and high-current bipolar outputs, the UDN2544B quad Darlington power driver provides an interface be tween low-level logic circuitry and high-power loads. Each of the four outputs can sink up to 1.8 A in the on state with peak inrush currents to 2.5 A. The four power outputs are each comprised of an open collector Darlington driver and an internal flyback/clamp diode for switching inductive loads. They feature a minimum breakdown and sustaining voltage of 50 V. The logic inputs are compatible with TTL and 5 V CMOS logic systems.

FEATURES
■ 1.8 A Continuous Output Current
■ Output Voltage to 50 V
■ Inputs Configured for Unipolar Stepper Motors
■ Active-Low Output Enable
■ TTL and 5 V CMOS Compatible Inputs
■ Integral Transient-Suppression Diodes