The HEF4017B is a 5-stage Johnson decade counter with ten spike-free decoded active HIGH outputs (Q0 to Q9), an active LOW carry output from the most significant flip-flop (Q5-9), active HIGH and active LOW clock inputs (CP0, CP1) and an overriding asynchronous master reset input (MR). The counter is advanced by either a LOW-to HIGH transition at CP0 while CP1 is LOW or a HIGH-to-LOW transition at CP1 while CP0 is HIGH. When cascading counters, the Q5-9 output, which is LOW while the counter is in states 5, 6, 7, 8, and 9, can be used to drive the CP0 input of the next counter. A HIGH on MR resets the counter to zero (Q0 = Q5-9 = HIGH; Q1 to Q9 = LOW) independent of the clock inputs (CP0, CP1). Automatic counter code correction is provided by an internal circuit: following any illegal code the counter returns to a proper counting mode within 11 clock pulses. Schmitt trigger action makes the clock inputs highly tolerant of slower rise and fall times. It operates over a recommended VDD power supply range of 3 V to 15 V referenced to VSS (usually ground). Unused inputs must be connected to VDD, VSS, or another input. Features and benefits - automatic counter correction - tolerant of slow clock rise and fall times - fully static operation - 5 V, 10 V, and 15 V parametric ratings - standardized symmetrical output characteristics - complies with JEDEC standard JESD 13-B - specified from ?40 ?C to +125 ?C https://elecena.pl/product/13903656/hef4017bt-653-counter-5-stage-4-5-15-5-v-so-16 2018-02-16 https://elecena.pl/product/13903656/hef4017bt-653-counter-5-stage-4-5-15-5-v-so-16 2018-05-04 https://elecena.pl/product/13903656/hef4017bt-653-counter-5-stage-4-5-15-5-v-so-16 2018-12-17 https://elecena.pl/product/13903656/hef4017bt-653-counter-5-stage-4-5-15-5-v-so-16 2019-06-21 https://elecena.pl/product/13903656/hef4017bt-653-counter-5-stage-4-5-15-5-v-so-16 2021-04-24 https://elecena.pl/product/13903656/hef4017bt-653-counter-5-stage-4-5-15-5-v-so-16 2022-10-06 https://elecena.pl/product/13903656/hef4017bt-653-counter-5-stage-4-5-15-5-v-so-16 2022-10-21 https://elecena.pl/product/13903656/hef4017bt-653-counter-5-stage-4-5-15-5-v-so-16 2022-10-24 https://elecena.pl/product/13903656/hef4017bt-653-counter-5-stage-4-5-15-5-v-so-16 2023-01-15 https://elecena.pl/product/13903656/hef4017bt-653-counter-5-stage-4-5-15-5-v-so-16 2023-05-28 https://elecena.pl/product/13903656/hef4017bt-653-counter-5-stage-4-5-15-5-v-so-16 2023-09-15 https://elecena.pl/product/13903656/hef4017bt-653-counter-5-stage-4-5-15-5-v-so-16 2025-12-12 https://elecena.pl/product/13903656/hef4017bt-653-counter-5-stage-4-5-15-5-v-so-16 2026-01-26