IC
The SN74HC175DR is a high-speed, 4-bit, D-Type register manufactured by Texas Instruments. It features a latch, four bidirectional bus lines, and an asynchronous reset. The latch is controlled by the master reset (MR) and enable (E) signals. The enable signal is active low and the reset signal is active high. The register can be reset to all logic 0 when the reset line is resting in the high state and then will remain reset until the enable signal goes low, at which point data can be shifted into the register. Data is shifted into the input latch on a positive transition of the clock signal (CP). The data at the outputs is latched transparently on the negative transition of the clock signal. When the enable signal is set to a logic low, the data placed on the data inputs is immediately available at the outputs.