DESCRIPTION
OF ”B” SERIES CMOS DEVICES” s DIP ORDER CODES PACKAGE DIP SOP TUBE HCF45XXBEY HCF45XXBM1 SOP T& R HCF45XXM013TR DESCRIPTION
The HCF4510B will count out of non-BCD counter states in a maximum of two clock pulses in the up mode, PIN CONNECTION and a maximum of four clock pulses in the down mode. If the CARRY-IN input is held low, the counter advances up or down on each positive-going clock transition. Synchronous cascading is accomplished by connecting all clock inputs in parallel and connecting the CARRY-OUT of a less significant stage to the CARRY-IN of a more significant stage. The HCF4510B and HCF4516B can be loaded in the ripple mode by connecting the CARRY-OUT to the clock of the next stage. If the UP/DOWN input changes during a terminal count, the CARRY-OUT must be gated with the clock, and the UP/DOWN input must change while the clock is high. This method provides a clean clock signal to the subsequent counting stage. March 2000 1/12 HCF4510B/4515B FUNCTIONAL DIAGRAM...
STMicroelectronics
