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CD4557 1-to-64 Bit Variable Length Shift Register

DIL-16
Component class
IC:Logic 4000 Series
Package
Base part
CD4557
Part
CD4557
Name
1-to-64 Bit Variable Length Shift Register
Status
In production
Manufacturer
Generic

The CD4557 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.
Serial data may be selected from the A or B data inputs with the A/B select input. This feature is useful for recirculation purposes. A Clock Enable (CE) input is provided to allow gating of the clock or negative edge clocking capability.
The device can be effectively used for variable digital delay lines or simply to implement odd length shift registers.

 

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