HCF40103B - STMicroelectronics

HCF40103B 8-STAGE PRESETTABLE SYNCHRONOUS DOWN COUNTERS

OF ”B” SERIES CMOS DEVICES” . . . . . . . . EY (Plastic Package) F (Ceramic Package) C1 (Chip Carrier) ORDER CODES : HCC401XXBF HCF401XXBEY HCF401XXBC1 DESCRIPTION The HCC40102B, HCC40103B , (extended temperature range) and the HCF40102B, HCF40103B (intermediate temperature range) are monolithic integrated circuits, available in 16-lead dual in-line pla.

Features

is active when the internal count is zero. The HCC/HCF40102B is configured as two cascaded 4-bit BCD counters, and the HCC/HCF40103B contains a single 8-bit binary counter. Each type has control inputs for enabling or disabling the clock, for clearing the counter to its maximum count, and for presetting the counter either synchronously or asynchronously. All control inputs and the CARRY-OUT/ZERO-DETECT output are active-low logic. In normal operation, the counter is decremented by one count on each positive transition of the CLOCK. Counting is inhibited when the CARRY-IN/COUNTER ENABLE (CI/CE.