HEF4557B register equivalent, 1-to-64 bit variable length shift register.
* Fully static operation
* 5 V, 10 V, and 15 V parametric ratings
* Standardized symmetrical output characteristics
* Specified from 40 C to +85 C
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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, .
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