The CD4022B is a 4-stage Johnson counter with 8 decoded outputs. The counter advances one count at the positive clock signal transition if the CLOCK INHIBIT signal is low. Counter advancement is inhibited when CLOCK INHIBIT is high. A high RESET signal clears the counter to its zero count. Each decoded output remains high for one full clock cycle. The CARRY-OUT signal completes one cycle every 8 clock input cycles.
Use of the Johnson counter configuration permits high-speed operation, 2-input decode-gating and spike-free decoded outputs. The decoded outputs are normally low and go high only at their respective decoded time slot.