Bidirectional Shift Register Ic. Ic 74671 4 bit bidirectional shift register. Figure 1 shows an n bit bidirectional shift register with serial data loading and retrieval capacity.
74hc165 parallel in serial out shift register. 74ls194 4 bit bidirectional universal shift register. Dm74ls194a 4 bit bidirectional universal shift register.
This register has mode input for right shift or left shift a clock signal and two serial data lines one each for input and output.
The bidirectional shift register can be defined as the register in which the data can be shifted either left of right. A four bit bidirectional shift register using d flip flops is shown below. Here a set of nand gates are configured as or gates to select data inputs from the right or left adjacent bistables as selected by the left right control line. A bidirectional or reversible shift register is one in which the data can be shift either left or right.
