ULN2003
ULN2003 is a single-chip integrated high voltage, high current Darlington tube array, The circuit contains seven independent Darlington tube drive single channel. The circuit is designed with continuous diode, which can be used to drive relay,stepping motor and other inductive loads. A single darlington collector can output 500mA current. Higher output current capacity can be achieved by connecting darlington tubes in parallel.
ULN2001D
The ULN2001D is high-voltage high-current Darlington transistor arrays each containing three open collector common emitter pairs. Each pair is rated at 500mA. Suppression diodes are included for inductive load driving, the inputs and outputs are pinned in opposition to simplify board layout.
These devices are capable of driving a wide range of loads including solenoids, relays, DC motors, LED displays, filament lamps, thermal print-heads and high-power buffers.
The ULN2001D is available in both a small outline 8-pin package (DIP8, SOP8 ).
