HEF4031B

Application

An example of an application for the HEF4031B is:
· Serial shift register.


Pinout




Description

The HEF4031B is an edge-triggered 64-stage static shift register with two serial data inputs (DA, DB), a data select input A/B, a clock input (CP), a buffered clock output (CO), and buffered outputs from the 64th bit position (O₆₃, O₆₃). The output O63 is capable of driving one TTL load.

Data of HEF4031B  from D_A or D_B, as determined by the state of A/B, is shifted into the first shift register position and all the data in the register is shifted one position to the right on the LOW to HIGH transition of CP. DA is selected by a LOW, and DB by a HIGH on A/B. HEF4031B registers can be cascaded either by connecting all CP inputs together or by driving CP of the most right hand register with the system clock and connecting CO to CP of the preceding register. When the second technique is used in the recirculating mode, a flip-flop must be used to store O63 of the most right-hand register until the most left-hand register is clocked.