25 pieces of CD4022BCN. Date code is P9942AB

 

Leftover from previous projects

 

General Description

 

The CD4022BC is a 4-stage divide-by-8 Johnson counter

with 8 decoded outputs and a carry-out bit.

These counters are cleared to their zero count by a logical

“1” on their reset line. These counters are advanced on the

positive edge of the clock signal when the clock enable

signal is in the logical “0” state.

The configuration of the CD4022BC permits medium speed

operation and assures a hazard free

counting sequence. The 8 decoded outputs are normally

in the logical “0” state and go to the logical “1” state

only at their respective time slot. Each decoded output

remains high for 1 full clock cycle. The carry-out signal

completes a full cycle for every 8 clock input cycles and

is used as a ripple carry signal to any succeeding stages.

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