With clamp diodes included, the Darlington arrays directly drive a variety of inductive loads, including relays and stepper motors in home appliance and industrial products. Three arrays have been announced by Diodes Incorporated, ensuring compatibility with all common logic families. These are: ULN2002A (14V to 25V PMOS), ULN2003A (5V TTL, CMOS) and ULN2004A (6V to 15V CMOS, PMOS).
As drop-in replacements, all parts are provided in the popular small outline SO-16 package, with inputs and outputs of all Darlingtons pinned out in direct opposition to simplify PCB layouts. The array’s -40ºC to +105ºC operating temperature suits the requirements of industrial system design.
These high-performance Darlington arrays are priced at $0.15USD each in 1k quantities.