Nexperia USA Inc. 74HC4020PW,118

Overview

74HC4020PW,118 from Nexperia is a 14-stage binary ripple counter IC with asynchronous master reset (MR), clock input (CP), and 12 buffered outputs (Q0, Q3–Q13). It advances on the HIGH-to-LOW CP edge, operates from 2.0 V to 6.0 V, delivers ≤24 ns propagation delay at 6.0 V, and supports industrial temperature range (−40 °C to +125 °C) in TSSOP16 package. It is used in frequency division and timing control circuits for industrial PLCs and instrumentation.

For engineers reviewing the 74HC4020PW,118 datasheet, 74HC4020PW,118 pinout, 74HC4020PW,118 application, or 74HC4020PW,118 equivalent, this page provides verified functional identity, validated TSSOP16 pin mapping, confirmed 14-bit ripple counting behavior, real-world timing performance data (e.g., 24 ns tpd at 6 V), and direct alternatives with documented electrical and logic-level differences.

Technical Context

This device implements a cascaded chain of 14 static toggle flip-flops, forming a synchronous-free ripple counter where each stage drives the clock input of the next. Its asynchronous MR overrides all states independently of CP timing, forcing all outputs LOW within 43 ns (max) at 4.5 V.

Input clamping diodes enable safe interfacing to voltages exceeding VCC when used with current-limiting resistors. The 74HC variant accepts CMOS-level inputs (VIH ≥ 3.15 V at VCC = 4.5 V), distinguishing it from the TTL-compatible 74HCT4020 which requires VIH ≥ 2.0 V.

Key Specifications

Pinout & Package

TSSOP16 package (SOT403-1): 4.4 mm body width, 0.65 mm lead pitch, 16-pin surface-mount, thermal-enhanced plastic construction suitable for reflow assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 14-stage binary ripple counter applications.

Compared with 74HC4020PW,118, the SO16 variant trades board area and thermal performance for ease of prototyping, while the 74HCT4020PW,118 swaps input compatibility for reduced noise margin-making the HC version optimal for mixed-voltage CMOS systems requiring robust noise immunity.

Availability

74HC4020PW,118 is available at Aetrix Electronics and suitable for industrial automation, test equipment, and embedded timing applications requiring stable component supply across extended temperature ranges.

Supply support for 74HC4020PW,118 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 74HC4020 belongs to Nexperia's high-speed CMOS logic family, engineered for low-power, noise-immune digital timing functions in resource-constrained embedded systems.

FAQ

What is the maximum operating frequency of the 74HC4020PW,118?

The 74HC4020PW,118 achieves a maximum clock frequency of 109 MHz at VCC = 6.0 V with CL = 50 pF, as specified in Table 7 of the datasheet. At lower supply voltages (e.g., 4.5 V), fmax drops to 92 MHz. This rating assumes proper PCB layout, decoupling, and load capacitance compliance.

Can the 74HC4020PW,118 be used with a 3.3 V supply?

Yes - the 74HC4020PW,118 is fully specified for operation from 2.0 V to 6.0 V, including 3.3 V nominal systems. At VCC = 3.3 V, VIH is guaranteed ≥2.1 V and VOL ≤0.26 V (IO = 4.0 mA), ensuring reliable interfacing with standard 3.3 V CMOS outputs and inputs.

Is there a direct pin-compatible alternative with TTL input compatibility?

Yes: the 74HCT4020PW,118 shares identical pinout, package, and timing characteristics but features TTL-compatible inputs (VIH ≥ 2.0 V at VCC = 4.5–5.5 V). This allows direct replacement when interfacing with legacy 5 V TTL logic, though noise margin is reduced versus the HC variant.

How does the asynchronous master reset (MR) behave during clock transitions?

The MR input is fully asynchronous and overrides all internal states immediately upon going HIGH, forcing Q0–Q13 LOW within 51 ns (max) at VCC = 4.5 V - independent of CP timing, phase, or level. MR deassertion (LOW) restores normal counting on the next valid CP falling edge.