ULN2803/ST

OCTAL PERIPHERAL DRIVER ARRAYS

.EIGHTDARLINGTONS WITHCOMMONEMIT-
.TERS .OUTPUT CURRENT TO 500 mA .OUTPUT VOLTAGE TO50 V .INTEGRAL SUPPRESSIONDIODES VERSIONS FOR ALL POPULARLOGIC FAMI.
LIES .OUTPUT CAN BE PARALLELED INPUTS PINNED OPPOSITE OUTPUTS TO
SIMPLIFYBOARDLAYOUT

DESCRIPTION
The ULN2801A-ULN2805Aeach contain eight darlington
transistors with common emitters and integral
suppression diodes for inductive loads. Each
darlington features a peak load current rating of
600mA (500mA continuous) and can withstand at
least50V in the off state. Outputsmaybe paralleled
for higher current capability.
Five versions are available to simplify interfacing to
standard logic families : the ULN2801Ais designed
for generalpurpose applicationswith a current limit
resistor ; theULN2802Ahas a 10.5kΩ inputresistor
and zenerfor 14-25VPMOS; theULN2803Ahas a
2.7kΩ input resistor for 5V TTL and CMOS ; the
ULN2804A has a 10.5kΩ input resistor for 6-15V
CMOS and the ULN2805A is designed to sink a
minimum of 350mA for standard and Schottky TTL
where higher output current is required.
All types are supplied in a 18-lead plastic DIP with
a copperleadfromandfeaturethe convenientinputopposite-
outputpinout to simplify board layout.