Nexperia USA Inc. 74HC4017D,652

Overview

74HC4017D,652 from Nexperia is a 5-stage Johnson decade counter IC with 10 decoded active-HIGH outputs (Q0–Q9), one active-LOW carry output (Q5-9), dual-edge-triggered clock inputs (CP0: LOW-to-HIGH; CP1: HIGH-to-LOW), and asynchronous master reset (MR). It operates from 2.0 V to 6.0 V, delivers propagation delays as low as 18 ns at VCC = 6.0 V, and supports industrial temperature range (−40 °C to +125 °C) in SO16 package. It is used in sequential LED drivers, divide-by-N timing circuits, and state-machine controllers.

For engineers reviewing the 74HC4017D,652 datasheet, 74HC4017D,652 pinout, 74HC4017D,652 application, or 74HC4017D,652 equivalent, this device serves as a TTL/CMOS-compatible decade counter with built-in illegal-state recovery, dual-clock edge selection, and cascading capability via Q5-9 - critical for reliable digital sequencing in embedded control and instrumentation designs.

Technical Context

The 74HC4017D,652 implements a 5-flip-flop Johnson counter architecture that generates 10 unique decoded states without external decoding logic. Its dual-clock interface allows flexible triggering: CP0 advances on rising edge when CP1 = LOW; CP1 advances on falling edge when CP0 = HIGH - enabling bidirectional clock domain interfacing and synchronous cascade control.

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 provides a dedicated carry signal active LOW during states 5–9, enabling direct daisy-chaining of multiple counters for extended modulo-N division (e.g., divide-by-100).

Key Specifications

Pinout & Package

74HC4017D,652 is housed in a plastic small outline package (SO16, SOT109-1) with 16 leads, 3.9 mm body width, and standard 1.27 mm lead pitch. Pin 1 is marked by a notch or index area; the package is RoHS-compliant and rated for reflow soldering per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HCT4017D,653, the 74HC4017D,652 offers lower input threshold and wider supply margin but lacks native TTL input compatibility; versus CD4017BE, it delivers 23× higher speed and SO16 surface-mount readiness at the cost of reduced max voltage.

Availability

74HC4017D,652 is available at Aetrix Electronics and suitable for LED chaser controllers, divide-by-N timing generators, and industrial sequential machines requiring stable component supply across automotive, industrial automation, and instrumentation programs.

Supply support for 74HC4017D,652 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 consumer markets.

The 74HC4017D,652 belongs to Nexperia's HC logic family - engineered for low-power, high-noise-immunity digital sequencing in space-constrained, thermally demanding applications where reliability and pin compatibility are critical.

FAQ

What is the difference between 74HC4017D and 74HCT4017D?

The 74HC4017D features CMOS-compatible input thresholds (VIH ≥ 70% VCC), while the 74HCT4017D uses TTL-compatible thresholds (VIH = 2.0 V min at VCC = 4.5–5.5 V). Both share identical pinout, function, and timing specs. The HCT variant ensures robust interfacing with legacy 5 V TTL outputs without level shifters, whereas HC offers better noise immunity in mixed-voltage systems.

Can 74HC4017D,652 drive LEDs directly?

Yes - each output can source/sink ±4.0 mA at VCC = 4.5 V, sufficient to drive standard 2 mA LEDs with appropriate series resistors (e.g., 1 kΩ for ~3.5 mA at 5 V). For higher-current LEDs or multiplexed arrays, external transistor drivers are recommended to avoid exceeding total package power limits (500 mW).

How does the Q5-9 output enable cascading?

Q5-9 goes LOW during count states 5 through 9 and HIGH otherwise. When wired to CP0 of a second 74HC4017, it triggers one advance per 10 input clocks - creating a modulo-100 counter. This avoids race conditions inherent in ripple-carry schemes and ensures synchronized state progression across stages.

Is automatic illegal-state recovery guaranteed under all conditions?

Yes - internal circuitry detects invalid Johnson codes (e.g., 00110) and forces correction to a valid state within ≤11 clock cycles, regardless of initial condition or supply ramp rate. This behavior is tested and specified per JEDEC JESD78 latch-up and functional verification standards, ensuring robustness during power-up, brownout, or ESD transients.