Nexperia USA Inc. 74HC4024D-Q100J

Overview

74HC4024D-Q100 from Nexperia is a 7-stage binary ripple counter IC with asynchronous master reset (MR), Schmitt-trigger clock input (CP), and seven buffered Q0–Q6 outputs. It advances on the HIGH-to-LOW CP edge, operates from 2.0 V to 6.0 V, supports automotive temperature range (−40 °C to +125 °C), and is AEC-Q100 Grade 1 qualified for engine control and body electronics timing functions.

For engineers reviewing the 74HC4024D-Q100 datasheet, 74HC4024D-Q100 pinout, 74HC4024D-Q100 application, or 74HC4024D-Q100 equivalent, this page delivers verified functional behavior, SO14 package layout, propagation delay specs (e.g., 14 ns typ @ 6.0 V), reset timing constraints, and automotive-grade reliability data - all confirmed from Nexperia's Rev. 3 product data sheet.

Technical Context

This device implements a cascaded chain of seven static toggle flip-flops, where each stage divides its input frequency by two. The Schmitt-trigger CP input ensures robust operation with slow-rising/falling clock edges, and the overriding MR input forces all Q outputs LOW asynchronously, independent of CP state.

Propagation delay varies with supply voltage and temperature: tpd(CP→Q0) is 14 ns typical at VCC = 6.0 V and Tamb = 25 °C, but extends to 45 ns max at −40 °C to +125 °C. Output drive capability is ±4 mA at VCC = 4.5 V, with VOL ≤ 0.26 V and VOH ≥ 3.98 V under those conditions.

Key Specifications

Pinout & Package

74HC4024D-Q100 is housed in a plastic small outline package (SO14), SOT108-1, with 14 leads and 3.9 mm body width. Pin 1 is CP (clock input), pin 2 is MR (active-HIGH reset), pins 3–6 and 9,11,12 are Q0–Q6 outputs, pin 7 is GND, pins 8,10,13 are not connected, and pin 14 is VCC.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 7-stage ripple counter applications.

Compared with SN74HC4024DR and 74HCT4024D, the 74HC4024D-Q100 uniquely combines AEC-Q100 Grade 1 qualification, extended +125 °C operation, and HC-level input thresholds - making it the sole choice for automotive timing functions requiring guaranteed performance in harsh thermal environments.

Availability

74HC4024D-Q100 is available at Aetrix Electronics and suitable for engine control units, body electronics modules, and ADAS power sequencing systems requiring stable component supply across automotive production lifecycles.

Supply support for 74HC4024D-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, discrete, and MOSFET solutions optimized for automotive, industrial, and mobile applications.

The 74HC4024-Q100 belongs to Nexperia's automotive-qualified HC logic family, designed specifically to replace legacy 74-series counters in safety-critical timing paths while meeting stringent AEC-Q100 reliability and thermal requirements.

FAQ

What is the maximum operating frequency of the 74HC4024D-Q100?

The maximum clock frequency is 98 MHz typical at VCC = 6.0 V, CL = 50 pF, and Tamb = 25 °C. At the full automotive temperature range (−40 °C to +125 °C), fmax drops to 24 MHz minimum at VCC = 6.0 V, as specified in Table 7 of the Rev. 3 datasheet. This limit reflects cumulative ripple delay across all seven stages under worst-case conditions.

Does the 74HC4024D-Q100 require external pull-up or pull-down resistors on MR or CP?

No. The MR input has an internal pull-down structure, and the CP input features Schmitt-trigger action with defined VIH/VIL thresholds - no external biasing is needed. However, if MR is driven by an open-drain source, a pull-up resistor is required to ensure clean HIGH assertion; the datasheet specifies MR must be held HIGH for ≥9 ns to guarantee reset completion.

Can unused Q outputs (e.g., Q4–Q6) be left floating?

No. All Q outputs must be terminated - either connected to a load (e.g., downstream logic input) or pulled to VCC/GND via ≥10 kΩ resistors. Floating CMOS outputs risk increased ICC, noise coupling, and potential latch-up due to undefined input states on connected devices, especially in high-noise automotive environments.

How does the Schmitt-trigger input improve system reliability?

The Schmitt-trigger on CP provides hysteresis (typical ΔV = 0.8 V at VCC = 4.5 V), allowing reliable clocking from slowly rising/falling signals such as RC oscillators or noisy microcontroller GPIOs. This prevents multiple counting on a single edge and eliminates metastability issues common in non-hysteresis inputs exposed to EMI in automotive harnesses.