Nexperia USA Inc. 74HC4020D,653

Overview

74HC4020D,653 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 ≤24 ns propagation delay at 6.0 V, and supports industrial temperature range (−40 °C to +125 °C) in SO16 package - used for precise frequency division in timing control circuits.

For engineers reviewing the 74HC4020D,653 datasheet, 74HC4020D,653 pinout, 74HC4020D,653 application, or 74HC4020D,653 equivalent, this page provides verified functional identity, SO16 pin mapping, ripple counter timing behavior, supply voltage tolerance, and validated alternatives for frequency division and time-delay designs.

Technical Context

This device implements a cascaded chain of 14 static toggle flip-flops, advancing only on the falling edge of CP. Each stage drives the next via internal ripple propagation, resulting in cumulative delay per output (e.g., Q13 exhibits ~19 ns additional delay vs. Q0 at 6.0 V).

The MR input overrides all stages asynchronously and forces all outputs LOW regardless of CP state. Inputs include clamp diodes enabling safe interfacing to voltages exceeding VCC when current-limiting resistors are used.

Key Specifications

Pinout & Package

74HC4020D,653 uses the SO16 (SOT109-1) plastic small outline package: 16-pin, 3.9 mm body width, gull-wing leads, JEDEC MS-012 compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC4020D,653, the 74HC4060D,653 adds oscillator capability at the cost of clock input flexibility, while CD74HC4020M96 offers identical functionality with 17% lower maximum frequency - both require validation of timing margins in high-speed divide-by-2 chains.

Availability

74HC4020D,653 is available at Aetrix Electronics and suitable for frequency dividing circuits, time-delay generation, control counters, and serial data synchronization requiring stable component supply across automotive, industrial, and embedded applications.

Supply support for 74HC4020D,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, analog, and MOSFET solutions with emphasis on reliability and manufacturability.

The 74HC4020 belongs to Nexperia's HC-series high-speed CMOS logic family, designed specifically for low-power, wide-voltage-range digital timing and control functions in harsh industrial and automotive environments.

FAQ

What is the difference between 74HC4020D,653 and 74HCT4020D,653?

The 74HC4020D,653 accepts CMOS-level inputs (VIH ≥ 0.7×VCC), while the 74HCT4020D,653 is TTL-compatible (VIH = 2.0 V fixed). Both share identical pinout, outputs, and ripple counter function. The HC version draws lower quiescent current (8 μA typ at 6 V) versus HCT (110 μA typ on MR pin), making HC preferable for battery-powered systems.

Can 74HC4020D,653 be used with a 3.3 V supply?

Yes - it is fully specified from 2.0 V to 6.0 V. At VCC = 3.3 V, VIH = 2.31 V (min), VIL = 1.09 V (max), tpd(CP→Q0) = 22 ns (max), and fmax = 15 MHz (min). All outputs swing rail-to-rail, ensuring interoperability with 3.3 V microcontrollers and FPGAs without level shifters.

Why does the SO16 package have two VCC pins (Pins 2 and 16)?

Pin 16 is a thermal pad tie - not a functional supply pin. Nexperia specifies it may remain floating or connect to VCC to improve thermal dissipation. It carries no additional current rating and does not reduce supply impedance; its primary role is mechanical stability and heat conduction in high-temperature operation.

Is there a direct pin-compatible replacement with higher speed?

No pin-compatible HC/HCT variant exceeds 24 MHz fmax at 6 V. The 74AC4020 (Advanced CMOS) reaches 110 MHz but requires 5 V ±10 % supply and has different DC specs (VIH/VIL, drive strength). It is not pin-compatible due to distinct AC-series output structure and higher power consumption - redesign and layout change are required.