Nexperia USA Inc. 74HC4017PW-Q100J

Overview

74HC4017PW-Q100 from Nexperia is an automotive-grade 5-stage Johnson decade counter IC with 10 decoded outputs (Q0–Q9), dual-edge-triggered clock inputs (CP0 and CP1), and asynchronous master reset (MR). It operates from 2.0 V to 6.0 V, delivers propagation delays as low as 18 ns at 6.0 V, and is qualified to AEC-Q100 Grade 1 (−40 °C to +125 °C) for use in engine control units and body electronics timing circuits.

For engineers reviewing the 74HC4017PW-Q100 datasheet, 74HC4017PW-Q100 pinout, 74HC4017PW-Q100 application, or 74HC4017PW-Q100 equivalent, this device supports precise sequential decoding, cascaded divide-by-N timing (e.g., divide-by-2 through divide-by-10), and automotive-grade reliability with CMOS-level input compatibility and internal code correction.

Technical Context

The 74HC4017PW-Q100 implements a 5-flip-flop Johnson counter architecture that generates mutually exclusive decoded outputs across ten states, with automatic recovery from illegal codes within ≤11 clock cycles. Its dual-clock interface allows flexible edge selection: CP0 advances on LOW-to-HIGH while CP1 = LOW; CP1 advances on HIGH-to-LOW while CP0 = HIGH.

The Q5-9 carry output goes LOW during states 5–9, enabling direct cascade control of downstream counters without external logic. The MR input is asynchronous and active-HIGH, forcing Q0 = HIGH and Q1–Q9 = LOW regardless of clock state - critical for deterministic system initialization in automotive safety-critical timing paths.

Key Specifications

Pinout & Package

TSSOP16 plastic thin shrink small outline package (SOT403-1); 16 leads; body width 4.4 mm; lead pitch 0.65 mm; 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 74HC4017D-Q100 and 74HC4017BQ-Q100, the 74HC4017PW-Q100 offers the best balance of compact TSSOP footprint, manufacturability with standard SMT processes, and thermal performance for mid-tier automotive modules - making it ideal for body electronics and infotainment peripheral timing.

Availability

74HC4017PW-Q100 is available at Aetrix Electronics and suitable for automotive body control, engine management, and industrial HMI applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC4017PW-Q100 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 optimized for automotive, industrial, and mobile markets.

The 74HC4017PW-Q100 belongs to Nexperia's automotive-qualified HC logic family, designed specifically for robust, low-power sequential timing in harsh-environment electronic control units where deterministic state transitions and AEC-Q100 compliance are mandatory.

FAQ

What is the difference between 74HC4017PW-Q100 and 74HCT4017PW-Q100?

The 74HC4017PW-Q100 uses CMOS-level inputs (VIH ≥ 70% VCC), while the 74HCT4017PW-Q100 features TTL-compatible inputs (VIH = 2.0 V min at VCC = 4.5 V to 5.5 V). This makes the HCT version interoperable with legacy 5 V TTL systems without level shifters, whereas the HC version offers superior noise immunity in mixed-voltage 3.3 V/5 V automotive domains.

Can 74HC4017PW-Q100 drive LEDs directly?

Yes - each decoded output can source or sink up to 4.0 mA at VCC = 4.5 V (VOH ≥ 3.98 V, VOL ≤ 0.26 V), sufficient to drive low-current indicator LEDs with series resistors. For higher-brightness or multiplexed arrays, external transistor buffers are recommended to maintain timing integrity and avoid output voltage droop.

How does the Q5-9 output function in cascade configurations?

Q5-9 is LOW only during counter states 5 through 9. When wired to CP0 of a second 74HC4017PW-Q100, it enables that device for exactly five counts - allowing two chips to form a 20-state sequencer. This avoids race conditions inherent in clock-gating schemes and ensures monotonic state advancement across devices.

Is the MR input debounced internally?

No - MR is a purely asynchronous, unbuffered input with no internal filtering. External RC filtering (e.g., 10 kΩ + 100 nF) is required if driven by mechanical switches or noisy control lines to prevent spurious resets. The datasheet specifies minimum MR pulse width as 14 ns at VCC = 6.0 V, confirming its sensitivity to fast transients.