Combining AND logic gates and inverting high-current bipolar outputs, the UDN2540B and A2540SLB quad Darlington power drivers provide interface between low-level signal-processing circuits and power loads totaling 360 W. Each of the four independent 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 leads. 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
■ TTL and 5 V CMOS Compatible Inputs
■ Efficient Input/Output Pinning
■ Integral Transient-Suppression Diodes
■ Replaces L6221A and L6221CD