HEF4017B Datasheet | Nexperia

5-stage Johnson decade counter Rev. 9 - 8 April 2016 Product data sheet 1. General description 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 (see Table 3). 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 remended 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. 2. 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 - Specified from - 40 C to +125 C - plies with JEDEC standard JESD 13-B 3. Ordering information Table 1. Ordering information All types operate from - 40 C to +125 C Type number Package Name Description HEF4017BT SO16 plastic small outline package; 16 leads; body width 3.9 mm Version SOT109-1 Nexperia 4. Functional diagram 5-stage Johnson decade...