The ULN2801A-ULN2805A each contain eight darlingtontransistors with common emitters and integralsuppression diodes for inductive loads. Eachdarlington features a peak load current rating of600mA (500mA continuous) and can withstand atleast 50V in the off state. Outputs may be paralleledfor higher current capability.Five versions are available to simplify interfacing tostandard logic families : the ULN2801A is designedfor general purpose applications with a current limitresistor ; the ULN2802A has a 10.5kΩ input resistorand zener for 14-25V PMOS ; the ULN2803A has a2.7kΩ input resistor for 5V TTL and CMOS ; theULN2804A has a 10.5kΩ input resistor for 6-15VCMOS and the ULN2805A is designed to sink aminimum of 350mA for standard and Schottky TTLwhere higher output current is required.All types are supplied in a 18-lead plastic DIP witha copper lead from and feature the convenient inputopposite-outputpinout to simplify board layout.
