SN74HCS165/SN74HCS165-Q1 Shift Register Texas Instruments SN74HCS165/SN74HCS165-Q1 8-Bit Parallel-Load Shift Register is a parallel- or serial-in, serial-out 8-bit shift register with Schmitt-trigger inputs. This device has two modes of operation (load data and shift data). The Texas Instruments SN74HCS165-Q1 8-Bit Parallel-Load Shift Registers are AEC-Q100 qualified for automotive applications.