Nexperia USA Inc. 74HC4020DB,118

Overview

74HC4020DB,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 propagation delays as low as 11 ns at 6.0 V, and supports industrial temperature range (−40 °C to +125 °C). It is used in frequency division and time-delay circuits requiring precise cascaded timing.

For engineers reviewing the 74HC4020DB,118 datasheet, 74HC4020DB,118 pinout, 74HC4020DB,118 application, or 74HC4020DB,118 equivalent, this device serves as a CMOS-compatible, low-power, high-noise-immunity ripple counter for embedded control logic, clock domain partitioning, and programmable delay generation where deterministic stage-wise propagation and TTL/CMOS input compatibility are required.

Technical Context

The 74HC4020DB,118 implements a synchronous-cascade-free 14-bit binary counter using static toggle flip-flops, where each stage drives the next via its Q output - resulting in inherent ripple propagation delay accumulation. Its MR input is asynchronous and active-HIGH, forcing all outputs LOW independently of CP state.

Input clamp diodes enable safe interfacing to voltages exceeding VCC when used with current-limiting resistors. The device complies with JEDEC JESD7A (2.0–6.0 V) and JESD8C (2.7–3.6 V), supports HBM ESD >2000 V, and exhibits latch-up immunity >100 mA per JESD78 Class II Level B.

Key Specifications

Pinout & Package

74HC4020DB,118 is packaged in SO16 (SOT109-1): plastic small outline, 16-pin, 3.9 mm body width, gull-wing leads. Pin 1 index located at top-left corner with notch or dot marking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with 74HC4020DB,118, the 74HC4020D,118 offers identical functionality in a more widely supported SOIC package, while 74HCT4020DB,118 trades CMOS input thresholds for guaranteed TTL-level recognition - making the choice dependent on system-level voltage translation requirements and board layout constraints.

Availability

74HC4020DB,118 is available at Aetrix Electronics and suitable for frequency division, time delay generation, control counter sequencing, and LED pattern generation requiring stable component supply across industrial, instrumentation, and embedded control programs.

Supply support for 74HC4020DB,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 optimized for reliability and energy efficiency.

The 74HC4020DB,118 belongs to Nexperia's 74HC logic family - designed for low-power, high-noise-immunity digital control in industrial automation, consumer electronics, and automotive subsystems where robustness and wide VCC tolerance are critical.

FAQ

What is the maximum clock frequency supported by the 74HC4020DB,118?

The 74HC4020DB,118 supports a maximum clock frequency of 109 MHz at VCC = 6.0 V and CL = 50 pF. At 4.5 V, the limit drops to 92 MHz, and at 2.0 V it is 30 MHz. These values are measured from CP to Q0 and assume proper decoupling and signal integrity; actual system-level frequency may be limited by cumulative ripple delay across stages.

Can the 74HC4020DB,118 be used with a 3.3 V supply?

Yes - the 74HC4020DB,118 is fully specified from 2.0 V to 6.0 V, including 3.3 V operation. At VCC = 3.3 V, VIH is 2.31 V (min), VIL is 1.09 V (max), VOH is ≥2.97 V (at −4 mA), and VOL is ≤0.33 V (at 4 mA), ensuring reliable interfacing with 3.3 V CMOS logic families.

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

The MR input is asynchronous and active-HIGH. When MR is driven HIGH, all internal flip-flops reset immediately - forcing Q0–Q13 LOW regardless of CP state, timing, or clock edge. This allows immediate, unconditional counter clearing without waiting for the next clock cycle.

Does the 74HC4020DB,118 include Schmitt-trigger inputs?

No - the 74HC4020DB,118 does not include Schmitt-trigger inputs on CP or MR. Its inputs are standard CMOS, with typical input thresholds at 50% of VCC. For noisy clock sources, external hysteresis (e.g., RC + inverter) or a dedicated Schmitt-trigger buffer is recommended before CP.