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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 eneralpurpose applicationswith a current limit resistor ; theULN2802Ahas a 10.5kW inputresistor and zenerfor 14-25VPMOS; theULN2803Ahas a 2.7kW input resistor for 5V TTL and CMOS ; the ULN2804A has a 10.5kW 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.
ULN2804A Maximum Ratings
Symbol
Parameter
Value
Unit
Vo
Output Voltage
50
V
Vi
Input Voltage for ULN2802A, UL2803A, ULN2804A for ULN2805A
30 15
V
IC
Continuous Collector Current
500
mA
IB
Continuous Base Current
25
mA
Ptot
Power Dissipation (one Darlington pair) (total package)
1.0 2.25
W
Tamb
Operating Ambient Temperature Range
-20 to 105
Tstg
Storage Temperature Range
-55 to 150
Tj
Junction Temperature Range
-20 to 150
ULN2804A Features
·EIGHTDARLINGTONS WITHCOMMONEMITTERS ·OUTPUT CURRENT TO 500 mA .OUTPUT VOLTAGE TO50 V ·INTEGRAL SUPPRESSIONDIODES ·VERSIONS FOR ALL POPULARLOGIC FAMILIES ·OUTPUT CAN BE PARALLELED ·INPUTS PINNED OPPOSITE OUTPUTS TO ·SIMPLIFYBOARDLAYOUT