onsemi (Ansemi)

SOIC-16

Tube

48

The MC14516B Synchronous Up/Down Binary Counter is constructed using MOS P-channel and N-channel enhancement mode devices in a monolithic structure. This counter can be preset by applying the desired binary value to the preset inputs (P0, P1, P2, P3) and then setting preset enable (PE) high. The counting direction is controlled by applying a high level (for up counting) or a low level (for counting down) to the UP/DOWN input. The state of the counter changes based on a positive transition of the clock input. Cascading is accomplished by concatenating the output carry bar with the input carry bar of the next stage while clocking each counter in parallel. The outputs (Q0, Q1, Q2, Q3) can be reset to the low state by applying a high level to the reset (R) pin. This CMOS counter is mainly used for up/down and difference counting. Other applications include: (1) frequency synthesizer applications requiring low power consumption and/or high noise immunity, (2) analog-to-digital and digital-to-analog conversion, and (3) magnitude and sign generation.