onsemi (Ansemi)

SOIC-16-300mil

taping

1000

The MC14518B Dual BCD Counter and MC14520B Dual Binary Counter have a monolithic structure constructed using MOS P-channel and N-channel enhancement mode devices. Each device consists of two identical, independent, internally synchronized 4-stage counters. The counter stages are D-type flip-flops with interchangeable clock and enable lines for incrementing on positive-going or negative-going transitions as required when cascading multiple stages. Each counter can be cleared by applying a high level on the reset line. Additionally, the MC14518B will calculate all undefined states within two clock cycles. These complementary MOS up counters are primarily intended for multi-level synchronous or ripple counting applications requiring low power consumption and/or high noise immunity.