; quadruple 2-input positive-nand gates with open-collector outputs
chip type=ttl7401 pins=14 horizontal=2 vertical=6
	vcc=14
	gnd=7
	y1=1
	a1=2
	b1=3
	y2=4
	a2=5
	b2=6
	a3=8
	b3=9
	y3=10
	a4=11
	b4=12
	y4=13