View mc74hc165a datasheet:

MOTOROLA SEMICONDUCTOR TECHNICAL DATA Product Preview MC54/74HC165A 8-Bit Serial or Parallel-Input/ Serial-Output Shift Register J SUFFIX High–Performance Silicon–Gate CMOS CERAMIC PACKAGE 16 CASE 620–10 The MC54/74HC165A is identical in pinout to the LS165. The device 1 inputs are compatible with standard CMOS outputs; with pullup resistors, they are compatible with LSTTL outputs. N SUFFIX This device is an 8–bit shift register with complementary outputs from the PLASTIC PACKAGE last stage. Data may be loaded into the register either in parallel or in serial 16 CASE 648–08 form. When the Serial Shift/Parallel Load input is low, the data is loaded 1 asynchronously in parallel. When the Serial Shift/Parallel Load input is high, the data is loaded serially on the risi