集成电路CD4017BM

General Description

The CD4017BM/CD4017BC is a 5-stage divide-by-10 John-

son counter with 10 decoded outputs and a carry out bit.

The CD4022BM/CD4022BC is a 4-stage divide-by-8 John-

son 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 sig-

nal is in the logical ``0’’ state.

The configuration of the CD4017BM/CD4017BC and

CD4022BM/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

Y Wide supply voltage range 3.0V to 15V

Y High noise immunity 0.45 VDD (typ.)

Y Low power Fan out of 2 driving 74L

TTL compatibility or 1 driving 74LS

Y Medium speed operation 5.0 MHz (typ.)

with 10V VDD

Y Low power 10 mW (typ.)

Y Fully static operation

Applications

Y Automotive

Y Instrumentation

Y Medical electronics

Y Alarm systems

Y Industrial electronics

Y Remote metering

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