HCF4566B

VERY LOW QUIESCENT CURRENT
HIGH NOISE IMMUNITY
SUPPLYVOLTAGE RANGE 3V TO 18V
NEGATIVE EDGE TRIGGERED COUNTERS
   FOR EASY CASCADING
PULSE SHAPING ON COUNTER INPUTS AC-

   CEPTS
SLOW INPUT RISE TIMES
MONOSTABLE MULTIVIBRATOR POSITIVE
   OR NEGATIVE EDGE TRIGGERED

The HCC4566B and HCF4566B are monolithic integrated circuits, available in 16-lead dual-in-line plastic or ceramic packages and plastic micro packages.

The HCC4566B and HCF4566B are industrial time base generators. They consist of a divide-by-10 ripple counter and a divide-by-5 or divide-by-6 ripple counter to permit stable time generation from a 50 or 60Hz line.

Cascading these  HCC4566B and HCF4566B  devices as divide by 60 counters provides a seconds and minutes counter with an output in BCD format. Aninternal monostable multivibrator is included whose output can be used as a reset or clock pulse providing additional frequency flexibility.A divide-by-5 facility allows the generation of a 1Hz signal from the European 50Hz-line.