Before revision: 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 Applications Typical usage of the ULN2003A is in driver circuits for relays, lamp and LED displays, stepper motors, logic buffers and line drivers.
After revision: solenoids,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 Applications Typical usage of the ULN2003A is in driver circuits for relays, lamp and LED displays, stepper motors, logic buffers and line drivers.