HCF4518B - STMicroelectronics

HCF4518B DUAL UP-COUNTERS

OF ”B” SERIES CMOS DEVICES” . . . . . . . . EY (Plastic Package) F (Ceramic Frit Seal Package) M1 (Micro Package) C1 (Plastic Chip Carrier) ORDER CODES : HCC45XXBF HCF45XXBM1 HCF45XXBEY HCF45XXBC1 PIN CONNECTIONS DESCRIPTION The HCC4518B/4520B (extended temperature range) and HCF4518B/4520B (intermediate temperature range) are monolithic integrated c.

Features

l BCD Up Counter and HCC/HCF4520B Dual Binary Up Counter each consist of two identical, internally synchronous 4-stage counters. The counter stages are D-type flip-flops having interchangeable Clock and Enable lines for incrementing on either the positive-going or negative-going transition. For single-unit operation the Enable input is maintained ”high” and the counter advances on each positive-going transition of the Clock. The counters are cleared by high levels on their Reset lines. The counter can be cascaded in the ripple mode by connecting Q4 to the enable input of the subsequent counter.