HCC4522B Datasheet, PDF (1/6 Pages) STMicroelectronics – PROGRAMMABLE BCD DIVIDER-BY-N COUNTER

HCC4522B
HCF4522B
PROGRAMMABLE BCD DIVIDER-BY-N COUNTER
. VERY LOW QUIESCENT CURRENT
. HIGH NOISE IMMUNITY
. SUPPLY VOLTAGE RANGE 3V TO 18V
. INTERNALLY SYNCHRONOUS FOR HIGH IN-
TERNAL AND EXTERNAL SPEEDS
. 5.0MHz COUNTING RATE
. INCREMENTED ON POSITIVE TRANSITION
. ^{OF CLOCK OR NEGATIVE TRANSITION OF}
CLOCK INHIBIT
ASYNCHRONOUS PRESET ENABLE
PRODUCT PREVIEW
EY
F
(Plastic Package) (Ceramic Frit Seal Package)
M1
C1
(Micro Package)
(Plastic Chip Carrier)
ORDER CODES :
HCC4522 BF
HCF4522 BM1
HCF4522 BEY
HCF4522 BC1
PIN CONNECTION (top view)
DESCRIPTION
The HCC4522B and HCF4522B are monolithic in-
tegrated circuits, available in 16-lead dual-in-line
plastic or ceramic packages and plastic micro pack-
ages.
The HCC4522B and HCF4522B are programm-
able, BCD down counters with a decoded ”0” state
output for divide-by-N applications. The counters
are cascadable. In single stage applications the ”0”
output is applied to the Preset Enable input. The
cascade feedback input allows cascade divide-by-N
operation with no additional gates required. The
clock Inhibit input allows disabling of the pulse
counting function.
Applications for these programmable divide-by-N
counters include frequency synthesizers, phase-
locked loops and other frequency dividing circuits
where low power and/or high noise immunity is re-
quired.
September 1990
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