Part No.	VDD	Addr. No.	Addr. / Data No.	Trig.	Package
HT6P20A	2V~12V	24	0	--	8DIP/NSOP
HT6P20B	2V~12V	22	2	Data	8DIP/NSOP
HT6P20D	2V~12V	20	4	Data	16DIP/NSOP