SL4518B Datasheet (System Logic Semiconductor)

SL4518B, Dual Up-Counter

SL4518B Dual Up-Counter High-Voltage Silicon-Gate CMOS The SL4518B Dual BCD Up-Counter consists two identical, internally synchronous 4 -stage counters.

The counter stages are Dtype 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