The ULN2003 is known for its high-current, high-voltage capacity. The drivers can be paralleled for even higher current output. Even further, stacking one chip on top of another, both electrically and physically, has been done. Generally it can also be used for interfacing with a stepper motor, where the motor requires high ratings which cannot be provided by other interfacing devices.

Main specifications:

• 500 mA rated collector current (single output)
• 50 V output (there is a version that supports 100 V output)
• Includes output flyback diodes
• Inputs compatible with TTL and 5-V CMOS logic