Nexperia USA Inc. 74HC4017BQ-Q100X

Overview

74HC4017BQ-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: LOW-to-HIGH; CP1: HIGH-to-LOW), asynchronous master reset (MR), and carry output Q5-9. It operates from 2.0 V to 6.0 V, supports –40 °C to +125 °C, and delivers <69 ns propagation delay at 4.5 V - used in sequential timing control, LED chasers, and divide-by-N clock generation in automotive body electronics.

For engineers reviewing the 74HC4017BQ-Q100 datasheet, 74HC4017BQ-Q100 pinout, 74HC4017BQ-Q100 application, or 74HC4017BQ-Q100 equivalent, this device serves as a robust, AEC-Q100 Grade 1–qualified decade counter for deterministic state sequencing, cascaded counting, and synchronous timer logic where low-power CMOS operation and noise immunity are critical.

Technical Context

The 74HC4017BQ-Q100 implements a 5-flip-flop Johnson counter architecture that auto-corrects illegal states within ≤11 clocks. Its dual-clock interface enables flexible edge-triggering: CP0 advances on rising edge when CP1 = LOW; CP1 advances on falling edge when CP0 = HIGH - supporting both independent and cascaded counter configurations.

Carry output Q5-9 goes LOW during states 5–9 and drives CP0 of downstream counters for seamless multi-decade expansion. The MR input is asynchronous, overriding all clock activity to force Q0 = HIGH and Q1–Q9 = LOW, enabling precise system-wide reset without clock dependency.

Key Specifications

Pinout & Package

DHVQFN16 (SOT763-1) package: 2.5 × 3.5 × 0.85 mm body, side-wettable flanks for AOI-compatible solder joint inspection, no leads, 16-terminal surface-mount construction with exposed thermal pad (non-soldered by default).

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HCT4017BQ-Q100 and CD74HC4017QPWRQ1, the 74HC4017BQ-Q100 offers optimal balance of CMOS input compatibility, DHVQFN manufacturability, and lowest typical supply current - making it preferred for new 3.3 V/5 V automotive control modules demanding AOI traceability.

Availability

74HC4017BQ-Q100 is available at Aetrix Electronics and suitable for automotive lighting control, engine management timing circuits, and industrial programmable logic requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74HC4017BQ-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, reliable, and scalable logic, analog, and discrete components for automotive, industrial, and consumer markets.

The 74HC4017BQ-Q100 belongs to Nexperia's automotive-qualified HC logic family, engineered specifically for deterministic, low-power sequential control in harsh-environment applications where functional safety and long-term supply stability are mandatory.

FAQ

What is the difference between 74HC4017BQ-Q100 and 74HCT4017BQ-Q100?

The 74HC4017BQ-Q100 uses CMOS-level inputs (VIH ≥ 70% VCC), while the 74HCT4017BQ-Q100 uses TTL-compatible inputs (VIH ≥ 2.0 V at VCC = 4.5–5.5 V). Both share identical pinout, timing, packaging, and AEC-Q100 Grade 1 qualification. Substitution requires verifying source logic family voltage thresholds.

Can 74HC4017BQ-Q100 drive LEDs directly?

Yes - each output delivers ±4.0 mA at VCC = 4.5 V (VOH ≥ 3.98 V, VOL ≤ 0.26 V), sufficient to drive standard 2 mA indicator LEDs with appropriate series resistors. For higher-current loads (e.g., >10 mA), external buffer transistors or dedicated LED drivers are recommended.

How does the Q5-9 carry output function in cascading?

Q5-9 goes LOW only during count states 5–9 and returns HIGH at Q0. When wired to CP0 of a second 74HC4017BQ-Q100, it advances the slave counter once per 5–9 cycle window - enabling precise 10×10 = 100-state expansion without additional glue logic or timing hazards.

Is the thermal pad on the DHVQFN package required to be soldered?

No - the exposed pad (terminal 1 index area) has no electrical or mechanical requirement to be soldered. If connected, it must remain electrically floating or tied to GND; soldering without proper grounding may cause thermal or EMI issues. Refer to Nexperia's SOT763-1 layout guidelines for recommended land patterns.