Nexperia USA Inc. 74HC4024D,653

Overview

74HC4024D,653 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, features Schmitt-trigger clock input for noise immunity, and delivers propagation delays as low as 14 ns (VCC = 6.0 V) in frequency division applications.

For engineers reviewing the 74HC4024D,653 datasheet, 74HC4024D,653 pinout, 74HC4024D,653 application, or 74HC4024D,653 equivalent, key selection criteria include ripple counter stage count, MR timing behavior, CP edge sensitivity, output drive capability at 4.5 V/±4 mA, and SO14 package compatibility with legacy 74HC logic footprints.

Technical Context

This device implements a cascaded chain of seven static toggle flip-flops, advancing state only on the falling edge of CP. The asynchronous MR input forces all Q outputs LOW independently of CP timing, enabling immediate reset without clock synchronization.

Schmitt-trigger action on CP provides hysteresis (typ. 0.8 V at VCC = 4.5 V), allowing reliable operation with slow-rising or noisy clock signals. Input clamp diodes permit safe interfacing to voltages exceeding VCC when used with current-limiting resistors.

Key Specifications

Pinout & Package

74HC4024D,653 uses the SO14 (SOT108-1) plastic small outline package: 14-pin, 3.9 mm body width, 1.27 mm lead pitch, surface-mountable with gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC4024D,653, the 74HCT4024D,653 offers improved noise immunity in 5 V TTL environments, while SN74HC4024N provides identical logic functionality in a through-hole format-enabling rapid evaluation or drop-in replacement where SO14 rework is impractical.

Availability

74HC4024D,653 is available at Aetrix Electronics and suitable for frequency division, time delay generation, clock tree synthesis, and legacy interface bridging requiring stable component supply across industrial temperature ranges.

Supply support for 74HC4024D,653 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 for automotive, industrial, and consumer markets.

The 74HC4024 belongs to Nexperia's 74HC high-speed CMOS logic family, engineered for low-power, wide-supply-operation digital timing functions in space-constrained and thermally demanding applications.

FAQ

What is the maximum clock frequency supported by 74HC4024D,653?

The 74HC4024D,653 supports up to 98 MHz at VCC = 6.0 V with CL = 50 pF, as specified in Table 7. At 4.5 V, fmax drops to 82 MHz. These values assume proper PCB layout, decoupling, and signal integrity - actual system-level frequency may be limited by ripple propagation delay accumulation across all seven stages.

Does 74HC4024D,653 require an external pull-up or pull-down on the MR pin?

No external resistor is required on MR if driven actively by a logic output. However, if left unconnected during power-up, MR must be externally pulled LOW via a 10 kΩ resistor to prevent unintended reset assertion; the internal structure lacks a weak pull-down, so floating MR risks metastability or spurious clearing.

Can Q0–Q6 outputs drive LEDs directly?

Yes - each output can sink or source up to 4 mA at VCC = 4.5 V, sufficient to drive low-current indicator LEDs (e.g., 2 mA @ 1.8 V forward voltage) with a series resistor. For higher-brightness LEDs or multiplexed displays, external drivers are recommended to avoid exceeding IOL/IOH limits and degrading timing performance.

Is the 74HC4024D,653 pin-compatible with older 74LS4024 variants?

No - while functional roles match, 74HC4024D,653 uses CMOS input thresholds and SO14 packaging, whereas 74LS4024 uses TTL inputs and typically comes in DIP-14 or SOIC-14 with different DC and AC characteristics. Direct substitution requires verification of voltage levels, timing margins, and layout compatibility; level-shifting may be needed in mixed-logic systems.