Transistor arrays texas instruments uln2803adwg4 darlington transistor array 8 drivers cmos ttl input compatibility 500ma peak output current 50v output voltage 50v switching voltage 130ns delay time 40 to 85c 18 soic case high voltage high current darlington transistor array consists of eight npn darlington pairs that feature high voltage outputs with common cathode clamp diodes for switching inductive loads applications include relay drivers hammer drivers lamp drivers dis