The ULQ200xA-Q1 devices are high-voltage
high-current Darlington transistor arrays. Each consists of seven npn Darlington
pairs that feature high-voltage outputs with common-cathode clamp diodes for
switching inductive loads. The collector-current rating of a single Darlington pair
is 500mA. The Darlington pairs can be paralleled for higher current capability.
The ULQ2003A-Q1 has a 2.7kΩ series base resistor
for each Darlington pair, for operation directly with TTL or 5V CMOS devices. The
ULQ2004A-Q1 has a 10.5kΩ series base resistor to allow operation directly from CMOS
devices that use supply voltages of 6V to 15V. The required input current of the
ULQ2004A-Q1 is below that of the ULQ2003A-Q1.
The ULQ200xA-Q1 devices are high-voltage
high-current Darlington transistor arrays. Each consists of seven npn Darlington
pairs that feature high-voltage outputs with common-cathode clamp diodes for
switching inductive loads. The collector-current rating of a single Darlington pair
is 500mA. The Darlington pairs can be paralleled for higher current capability.
The ULQ2003A-Q1 has a 2.7kΩ series base resistor
for each Darlington pair, for operation directly with TTL or 5V CMOS devices. The
ULQ2004A-Q1 has a 10.5kΩ series base resistor to allow operation directly from CMOS
devices that use supply voltages of 6V to 15V. The required input current of the
ULQ2004A-Q1 is below that of the ULQ2003A-Q1.