Transistor arrays st uln2804a darlington transistor array 8 drivers cmos input compatibility 500ma peak output current 50v output voltage 50v switching voltage 025us delay time 20 to 85c 18 dip case the uln2801a uln2805a each contain eight darlington transistors with common emitters and integral suppression diodes for inductive loads st uln2804a 8 npn darlington transarray