74109: dual J-not-K flip-flop

Description

Provides two J-Not-K positive-edge triggered flip-flops with set and clear function.

Label	Description	Signal
Jn	J input of flip-flop n	active high
Kn	K input of flip-flop n	active low
SETn	asynchronous set input	active low
CLRn	asynchronous clear input	active low
CLKn	clock for flip-flop n ()	positive edge
Qn	output of flip-flop n	active high
Rn	inverted output of flip-flop n	active low

Function	SETn	CLRn	CLKn	Jn	Kn	Qn	Rn
undetermined	L	L	X	X	X	H	H
asynchronous set	L	H	X	X	X	H	L
asynchronous clear	H	L	X	X	X	L	H
synchronous clear	H	H	/	L	L	L	H
hold	H	H	/	L	H	qn0	rn0
toggle	H	H	/	H	L	rn0	qn0
synchronous set	H	H	/	H	H	H	L