HCC4017B datasheet(7/12 Pages) STMICROELECTRONICS

tên linh kiện	HCC4017B

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Typical Output Low (sink) Current Characteristics.

Minimum Output Low (sink) Current Characteristics.

Typical

Output High (source) Current Charac-

teristics.

Minimum Output High (source ) Current Charac-

teristics.

TYPICAL APPLICATIONS

Divide by N Counter (N

≤ 10) with N Decoded Out-

puts.

When the N

th decoded output is reached (Nth

clock pulse) the S-R flip-flop (constructed from

two NOR gates of the HCC/HCF4001B) gener-

ates

reset

pulse

which

clears

the

HCC/HCF4017B to its zero count. At this time, if

the N

th decoded output is greater than or equal

to 6, the COUT line goes high to clock the next

HCC/HCF4017B

counter

section.

The

”0”

decoded output also goes high at this time. Coin-

cidence of the clock low and decoded ”0” output

high resets the S-R flip flop to enable the

HCC/HCF4017B.Ifthe N

th decoded output is

less than 6, the COUT line will not go high and,

therefore, cannot be used. In this case ”0”

decoded output may be used to perform the

clocking function for the next counter.

HCC/HCF4017B/4022B

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