HEF4557B Overview
Description
The HEF4557B is a static clocked serial shift register whose length may be programmed to be any number of bits between 1 and 64. The number of bits selected is equal to the sum of the subscripts of the enabled length control inputs (L1, L2, L4, L8, L16 and L32) plus one.
Key Features
- is useful for recirculation purposes
- A HIGH on master reset (MR) resets the register and forces O to LOW and O to HIGH, independent of the other inputs
- PINNING DA, DB A/B CP0 CP1 MR L1 to L32 O, O Fig.1 Functional diagram
