clock should be low during the high-to-low transition of chip select. SN54LS674, SN74LS674 The 'LS674 is a 16-bit parallel-in, serial-out shift register
clock should be low during the high-to-low transition of chip select. SN54LS674, SN74LS674 The 'LS674 is a 16-bit parallel-in, serial-out shift register