Nexperia USA Inc. 74HC4017PW,112

Overview

74HC4017PW,112 from Nexperia is a CMOS Johnson decade counter with 10 decoded outputs (Q0–Q9), dual-edge-triggered clock inputs (CP0 rising-edge, CP1 falling-edge), asynchronous master reset (MR), and carry output Q5-9 for cascading. It operates from 2.0 V to 6.0 V, delivers propagation delays as low as 18 ns at 6.0 V, and supports industrial temperature range (−40 °C to +125 °C). It is used in sequential LED drivers, divide-by-N timing circuits, and state-machine controllers where deterministic 1-of-10 decoding is required.

For engineers reviewing the 74HC4017PW,112 datasheet, 74HC4017PW,112 pinout, 74HC4017PW,112 application, or 74HC4017PW,112 equivalent, this device serves as a low-power, TTL-compatible (via 74HCT variant) decade counter with verified Johnson architecture, automatic illegal-state recovery (<11 clocks), and robust ESD protection (HBM >2000 V).

Technical Context

The 74HC4017PW,112 implements a 5-stage Johnson counter driving combinational decoding logic to generate mutually exclusive active-HIGH Q0–Q9 outputs. Its dual-clock architecture allows flexible triggering: advance on CP0↑ when CP1 = LOW, or on CP1↓ when CP0 = HIGH - enabling synchronous or asynchronous cascade control without race conditions.

Internal automatic code correction ensures return to valid counting sequence within 11 clock cycles after any illegal state (e.g., power-up glitch or noise-induced corruption). The Q5-9 output is active LOW during states 5–9, providing a clean carry signal for multi-digit counters, while MR forces Q0 = HIGH and all other outputs LOW regardless of clock edge timing.

Key Specifications

Pinout & Package

TSSOP16 plastic thin shrink small outline package (SOT403-1); 16 leads; body width 4.4 mm; 0.65 mm pitch; exposed pad not electrically connected.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar decade counter applications.

Compared with 74HCT4017PW,112 and CD4017BE, the 74HC4017PW,112 offers optimal balance of speed, low-voltage compatibility (down to 2.0 V), and modern TSSOP packaging - making it preferred for space-constrained, battery-powered, or mixed-signal embedded systems requiring deterministic 1-of-10 decoding.

Availability

74HC4017PW,112 is available at Aetrix Electronics and suitable for LED chaser controllers, divide-by-N timing generators, industrial sequential machines, and reset-synchronized state encoders requiring stable component supply across automotive, industrial, and consumer electronics programs.

Supply support for 74HC4017PW,112 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Nexperia is a global semiconductor expert focused on essential efficiency technologies, delivering high-performance logic, analog, and MOSFET solutions for automotive, industrial, and mobile markets.

The 74HC4017 belongs to Nexperia's HC-series logic family, designed for low-power, high-noise-immunity digital control in resource-constrained embedded systems where reliability and predictable timing behavior are critical.

FAQ

What is the function of the Q5-9 output?

The Q5-9 output is an active-LOW carry signal that goes LOW during counter states 5 through 9 and HIGH otherwise. It is specifically intended to drive the CP0 input of a cascaded 74HC4017, enabling multi-decade counting without external logic. Its timing aligns with Johnson counter internal state transitions, ensuring glitch-free propagation between stages.

Can CP0 and CP1 be used simultaneously?

No - simultaneous assertion of both CP0 and CP1 edges violates the functional table and may cause unpredictable or extra counting. The device requires strict mutual exclusion: CP0 must be triggered only when CP1 = LOW, and CP1 only when CP0 = HIGH. Violating this rule risks metastability and illegal state entry.

How does the automatic code correction work?

Internal monitoring circuitry detects invalid Johnson states (e.g., non-adjacent bits set) and forces a self-correcting sequence over ≤11 clock cycles. This occurs without external intervention and restores Q0–Q9 to standard 1-of-10 decoding - critical for robustness in noisy environments or during brown-out recovery.

Is the TSSOP16 package RoHS-compliant and lead-free?

Yes - the 74HC4017PW,112 in SOT403-1 (TSSOP16) packaging complies with RoHS Directive 2011/65/EU and is lead-free per JEDEC J-STD-609. The finish is matte tin, and the device meets Nexperia's standard halogen-free and green material requirements.