HCC4522B

HCC4522B HCF4522B PROGRAMMABLE BCD DIVIDER-BY-N COUNTER . . . . . . . PRODUCT PREVIEW VERY LOW QUIESCENT CURRENT HIGH NOISE IMMUNITY SUPPLY VOLTAGE RANGE 3V TO 18V INTERNALLY SYNCHRONOUS FOR HIGH INTERNAL AND EXTERNAL SPEEDS 5.0MHz COUNTING RATE INCREMENTED ON POSITIVE TRANSITION OF CLOCK OR NEGATIVE TRANSITION OF CLOCK INHIBIT ASYNCHRONOUS PRESET ENABLE EY (Plastic Package) F (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 integrated circuits, available in 16-lead dual-in-line plastic or ceramic packages and plastic micro packages. The HCC4522B and HCF4522B are programmable, 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, phaselocked loops and other frequency dividing circuits where low power and/or high noise immunity is required. September 1990 1/6 Plastic DIP16 (0.25) MECHANICAL DATA mm MIN. a1 B b b1 D E e e3 F I L Z 3.3 1.27 8.5 2.54 17.78 7.1 5.1 0.130 0.050 0.51 0.77 0.5 0.25 20 0.335 0.100 0.700 0.2...