The 74HCT595 is an high speed CMOS device that isdesigned to be pin compatable with 74LS low powerSchottky types.An eight bit shift register accpets data from the serial input(DS) on each positive transition of the shift register clock(STCP). When asserted low the reset function ( ) setsall shift register values to zero and is indepent of all clocks.Data from the input serial shift register is placed in theoutput register with a rising pulse on the storages resisterclock (SHCP). With the output enable asser