BUY ULN2803AG https://www.utsource.net/itm/p/1039441.html

Description: The ULN2803AG is an 18-pin high-voltage, high-current Darlington transistor array. Features: Eight Darlington pairs with common emitters Output current (single output) 500mA (max) Output voltage 50V (max) Inputs compatible with various types of logic Outputs can be paralleled for higher current capability Output clamp diodes High-noise-immunity input TTL/CMOS/PMOS/DTL compatible High-voltage outputs (50V) Low power dissipation Outputs can sink 500mA Applications: Stepper motor drivers Relay drivers Lamp drivers LED drivers High-current logic buffers Line drivers High-current switches DC-to-DC converters Solenoid drivers Hammer drivers (For reference only)