DS3647A Datasheet - National Semiconductor Corporation

DS3647A Quad Tri-state MOS Memory I/o Register

The DS3647A is a 4-bit I O buffer register intended for use in MOS memory systems This circuit employs a fall-through latch for data storage This method of latching captures the data in parallel with the output thus eliminating the delays encountered in other designs This circuit uses Schottkyclampe.

DS3647A Features

* TRI-STATE outputs The ‘‘B’’ port outputs are designed for use in bus organized data transmission systems and can sink 80 mA and source b5 2 mA Data going from port ‘‘A’’ to port ‘‘B’’ and from ‘‘B’’ to port ‘‘A’’ is inverted in the DS3647A Features Y Y Y Y Y Y Y Y PNP inputs minimize loading Fall-

DS3647A_NationalSemiconductorCorporation.pdf