Nexperia USA Inc. 74HC4024D,652

Overview

74HC4024D,652 from Nexperia is a 7-stage binary ripple counter IC with asynchronous master reset (MR), clock input (CP) triggered on HIGH-to-LOW transition, and seven buffered Q0–Q6 outputs. It operates from 2.0 V to 6.0 V, supports -40 °C to +125 °C ambient range, and features Schmitt-trigger clock input for robust edge detection in noisy timing circuits-used in frequency division and time-delay generation.

For engineers reviewing the 74HC4024D,652 datasheet, 74HC4024D,652 pinout, 74HC4024D,652 application, or 74HC4024D,652 equivalent, key selection criteria include propagation delay (14 ns typ @ VCC=6.0 V), master reset recovery time (2 ns min), output drive capability (±4 mA), and SO14 package compatibility with legacy 74HC logic layouts.

Technical Context

This device implements a cascaded chain of seven static toggle flip-flops, advancing state only on the falling edge of CP. Each stage feeds its Q output directly to the CP input of the next, forming a true ripple architecture without internal synchronization-resulting in cumulative propagation delay across stages.

The MR input is fully asynchronous and active-HIGH, forcing all Q outputs LOW independent of CP state or timing. Schmitt-trigger action on CP enables reliable operation with slow-rising clock signals up to 98 MHz maximum frequency at VCC = 6.0 V and CL = 50 pF.

Key Specifications

Pinout & Package

74HC4024D,652 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 (master 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 binary counter applications.

Compared with 74HC4024D,652, the 74HCT4024D,653 offers TTL-level input compatibility at the cost of slightly higher ICC, while SN74HC4024N trades SO14 surface-mount efficiency for DIP-14 mechanical robustness and broader thermal qualification.

Availability

74HC4024D,652 is available at Aetrix Electronics and suitable for frequency division, time delay generation, PWM pre-scaling, and digital clock tree distribution requiring stable component supply across industrial temperature ranges.

Supply support for 74HC4024D,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 semiconductors-high-volume, high-reliability logic, discrete, and MOSFET devices engineered for automotive, industrial, and consumer applications.

The 74HC4024 belongs to Nexperia's 74HC logic family, designed for low-power, high-noise-immunity digital timing functions in space-constrained industrial and embedded systems.

FAQ

What is the minimum pulse width required on the MR input to ensure reliable reset?

The MR input requires a minimum HIGH pulse width of 9 ns at VCC = 6.0 V (11 ns at VCC = 4.5 V, 13 ns at VCC = 2.0 V) to guarantee full reset of all seven counter stages. This value is specified in the tW parameter under dynamic characteristics and ensures metastability-free clearing even under worst-case voltage and temperature conditions.

Can 74HC4024D,652 operate reliably at 3.3 V supply?

Yes-74HC4024D,652 is fully specified from 2.0 V to 6.0 V, including 3.3 V. At VCC = 3.3 V, VIH is guaranteed ≥ 2.31 V and VIL ≤ 1.09 V, with typical propagation delay of ~22 ns and maximum operating frequency of ~55 MHz (CL = 50 pF), making it compatible with standard 3.3 V microcontroller I/O.

Are the NC pins (8, 10, 13) electrically isolated or internally tied?

Pins 8, 10, and 13 are confirmed as no-connect (NC) terminals per Nexperia's pin description table-they are physically unconnected to any internal circuitry and must remain floating or grounded per PCB layout best practices; no internal ties or parasitic coupling exists.

Does the Schmitt-trigger input eliminate the need for external RC filtering on the CP line?

The Schmitt-trigger on CP improves noise immunity but does not replace proper board-level design: external RC filtering may still be needed for high-amplitude transients (> ±2 V beyond VCC/GND), though rise/fall time tolerance is extended to 83 ns/V at VCC = 6.0 V-allowing direct connection to moderate-slew microcontroller clocks without added components.