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General Description

The CD4017BC is a 5-stage divide-by-10 Johnson counter

with 10 decoded outputs and a carry out bit.

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 CD4017BC and CD4022BC permits

medium speed operation and assures a hazard free

counting sequence. The 10/8 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 10/8 clock input cycles and

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

Features

Wide supply voltage range: 3.0V to 15V

High noise immunity: 0.45 VDD (typ.)

Low power Fan out of 2 driving 74L

TTL compatibility: or 1 driving 74LS

Medium speed operation: 5.0 MHz (typ.)

with 10V VDD

Low power: 10 μW (typ.)

Fully static operation

Applications

? Automotive

? Instrumentation

? Medical electronics

? Alarm systems

? Industrial electronics

? Remote metering