Nexperia USA Inc. 74HC4020PW,112

Overview

74HC4020PW,112 from Nexperia is a 14-stage binary ripple counter IC with asynchronous master reset (MR), clock input (CP) triggered on HIGH-to-LOW transition, and 12 buffered outputs (Q0, Q3–Q13). It operates from 2.0 V to 6.0 V, delivers propagation delay as low as 11 ns at VCC = 6.0 V, and supports industrial temperature range (−40 °C to +125 °C). It is used in frequency division and timing control circuits requiring precise cascaded counting.

For engineers reviewing the 74HC4020PW,112 datasheet, 74HC4020PW,112 pinout, 74HC4020PW,112 application, or 74HC4020PW,112 equivalent, this device serves as a low-power, CMOS-compatible ripple counter for clock domain division, time-delay generation, and digital control sequencing where deterministic edge-triggered cascading behavior is required.

Technical Context

The 74HC4020PW,112 implements a synchronous-cascade-free 14-bit binary counter using static toggle flip-flops, advancing only on the falling edge of CP. Its asynchronous MR overrides all stages independently of CP state, forcing Q0–Q13 LOW immediately.

Each stage features clamp diodes enabling safe interfacing with voltages exceeding VCC via current-limiting resistors. Input levels are CMOS-compatible (VIH ≥ 0.7×VCC, VIL ≤ 0.3×VCC), and output drive capability is ±4.0 mA at VCC = 4.5 V with VOH ≥ 3.98 V and VOL ≤ 0.26 V.

Key Specifications

Pinout & Package

TSSOP16 plastic thin shrink small outline package (SOT403-1); 16-pin, 4.4 mm body width, 0.65 mm pitch; thermally enhanced for high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC4020PW,112, the 74HC4040PW,112 offers fewer stages but identical timing and drive strength, while SN74LV4020PWR trades 5 V tolerance for better 3.3 V noise margins and higher leakage at temperature - selection depends on required division ratio and system voltage architecture.

Availability

74HC4020PW,112 is available at Aetrix Electronics and suitable for frequency division, time-delay generation, control sequencing, and serial synchronization applications requiring stable component supply across industrial temperature ranges.

Supply support for 74HC4020PW,112 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-enhancing components, delivering high-performance logic, discrete, and MOSFET solutions for automotive, industrial, and consumer markets.

The 74HC4020PW,112 belongs to Nexperia's 74HC logic family, engineered for low-power, high-noise-immunity digital timing and control in space-constrained industrial systems operating across extended temperature ranges.

FAQ

What is the maximum clock frequency supported by the 74HC4020PW,112?

The 74HC4020PW,112 supports a maximum clock frequency of 109 MHz at VCC = 6.0 V and CL = 15 pF, or 35 MHz at VCC = 6.0 V with CL = 50 pF. At 4.5 V and 50 pF load, fmax drops to 28 MHz. These values assume clean, monotonic clock edges meeting specified rise/fall time limits (≤20 ns at 4.5 V).

Can the 74HC4020PW,112 be used with a 3.3 V supply?

Yes - the 74HC4020PW,112 is fully specified from 2.0 V to 6.0 V, including 3.3 V operation. At VCC = 3.3 V, VIH is guaranteed ≥ 2.31 V and VIL ≤ 0.99 V, ensuring reliable interfacing with standard 3.3 V CMOS outputs. Propagation delay increases to ~21 ns (CP→Q0, typ) under these conditions.

Is the MR (master reset) input synchronous or asynchronous?

The MR input is asynchronous and active HIGH. A HIGH applied to MR forces all outputs (Q0–Q13) LOW immediately, regardless of CP state or timing. The reset action completes within tPHL(MR→Qn) - 37 ns (max) at VCC = 6.0 V - and does not require waiting for the next CP edge.

Why are Q1, Q2, and Q? missing from the output pins?

The 74HC4020PW,112 provides only Q0 and Q3 through Q13 (12 outputs total), omitting Q1 and Q2 to reduce die size and pin count while retaining utility for common division ratios (e.g., ÷8 via Q3, ÷16 via Q4). This design choice optimizes cost and package density without compromising core functionality for most timing applications.