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Home > Products > Integrated Circuits (ICs) > Logic > Counters, Dividers

Nexperia USA Inc. 74HCT4020DB,118

Name: 74HCT4020DB,118
Brand: Nexperia USA Inc.
SKU: 74HCT4020DB,118
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74HCT4020DB,118

Manufacturer:: Nexperia USA Inc.

Category:: Counters, Dividers

Package:: 16-SSOP (0.209", 5.30mm Width)

Datasheet:: 74HCT4020DB,118.pdf

Description:: IC BINARY COUNTER 14-BIT 16SSOP

Quantity:: RFQ Add To RFQ list

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Product details

Overview

74HCT4020DB,118 from Nexperia is a 14-stage binary ripple counter IC with TTL-compatible inputs, asynchronous master reset (MR), and 12 buffered outputs (Q0, Q3–Q13). It advances on the HIGH-to-LOW clock edge (CP), delivers up to 16,384:1 frequency division, operates from 4.5 V to 5.5 V, and is rated for -40 °C to +125 °C. It serves in precision timing chains for industrial control logic and programmable delay generation.

For engineers reviewing the 74HCT4020DB,118 datasheet, 74HCT4020DB,118 pinout, 74HCT4020DB,118 application, or 74HCT4020DB,118 equivalent, this device is selected for high-noise-immunity, low-power CMOS-based counting where TTL-level input compatibility and guaranteed 125 °C operation are required - not for synchronous counters, real-time clocks, or automotive safety systems.

Technical Context

This device implements a cascaded chain of 14 static toggle flip-flops, forming a ripple counter architecture where each stage drives the next via its output transition. The MR input forces all outputs LOW asynchronously, independent of CP state or edge timing.

Input thresholds are fixed at TTL levels (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V), ensuring direct interfacing with legacy 5 V logic families. Propagation delays scale with supply voltage and load: tpd(CP→Q0) is 18 ns (typ) at VCC = 4.5 V, CL = 50 pF; Qn→Qn+1 adds ~8 ns per stage.

Key Specifications

Parameter	Value and Actual Design Meaning
Counter stages	14-stage binary ripple counter - provides 2¹⁴ = 16,384 division ratio; Q13 is MSB output.
Logic family	74HCT - TTL-compatible inputs, CMOS outputs; enables direct interface with 5 V microcontrollers and legacy logic without level shifters.
Supply voltage	4.5 V to 5.5 V - supports stable operation across industrial 5 V rails with ±10 % tolerance.
Operating temperature	-40 °C to +125 °C - qualified for under-hood industrial environments and extended thermal cycling applications.
Max clock frequency	25 MHz (min) at VCC = 4.5 V, CL = 50 pF - sets upper limit for reliable ripple propagation without metastability accumulation.
Output drive	±4.0 mA at VOH/VOL - sufficient to drive 10 LSTTL loads or directly fan out to multiple 74-series inputs.
Power dissipation	CPD = 20 pF - used to calculate dynamic power: PD = CPD × VCC² × fIN + Σ(CL × VCC² × fOUT).

Pinout & Package

74HCT4020DB,118 is supplied in SO16 (SOT109-1) package: plastic small outline, 16 leads, 3.9 mm body width, gull-wing leads, JEDEC MS-012 compliant.

Pin/Terminal	Circuit Role	Design Meaning
1	Q11	Stage-11 output (2¹¹ = 2048 count); buffered, CMOS-level, capable of driving ≥10 LSTTL loads.
2	Q12	Stage-12 output (2¹² = 4096 count); same electrical specs as Q11; used for mid-range division taps.
3	Q13	MSB output (2¹³ = 8192 count); highest-order bit; critical for full-cycle detection and overflow signaling.
4	Q5	Stage-5 output (2⁵ = 32 count); commonly used for coarse time delays or prescaling before secondary logic.
5	Q4	Stage-4 output (2⁴ = 16 count); provides 16× division; often routed to enable/disable downstream blocks.
6	Q6	Stage-6 output (2⁶ = 64 count); balances resolution and propagation latency for intermediate timing nodes.
7	Q3	Stage-3 output (2³ = 8 count); lowest-indexed available output; used for basic divide-by-8 functions.
8	GND	Ground reference (0 V); must be low-impedance connection to minimize ground bounce during output transitions.
9	Q0	LSB output (2⁰ = 1 count); toggles on every CP falling edge; primary clock divider output.
10	CP	Asynchronous clock input; edge-triggered on HIGH-to-LOW transition; VIH/VIL defined for TTL levels.
11	MR	Master reset input; active HIGH; forces all outputs LOW regardless of CP state; no setup/hold required.
12	Q8	Stage-8 output (2⁸ = 256 count); widely used in baud rate generation and periodic interrupt timing.
13	Q7	Stage-7 output (2⁷ = 128 count); supports 128× division; common in LED multiplexing and scan timing.
14	Q9	Stage-9 output (2⁹ = 512 count); bridges medium- and high-range division needs in control sequencers.
15	Q10	Stage-10 output (2¹⁰ = 1024 count); enables precise 1 ms or 10 ms timing when driven by 1 kHz or 10 kHz clocks.
16	VCC	Positive supply (4.5–5.5 V); decoupling capacitor (100 nF ceramic) required within 5 mm of this pin.

Key Features

Feature	Design Value
TTL-compatible inputs	VIH = 2.0 V min, VIL = 0.8 V max at VCC = 5 V - eliminates need for external level translators when interfacing with 5 V MCU GPIOs or 74LS devices.
Wide temperature range	-40 °C to +125 °C operation - validated per JESD22-A108, enabling use in motor drives, PLC I/O modules, and outdoor instrumentation.
High noise immunity	Typical noise margin >1.0 V at VCC = 5 V - suppresses false triggering from EFT bursts or switching transients in noisy industrial cabinets.
Clamp diodes on inputs	Enables safe interfacing to voltages up to VCC + 0.5 V using series current-limiting resistors - protects against overvoltage during hot-swap or test probing.
Low dynamic power	CPD = 20 pF - limits switching power to <1 mW at 1 MHz clock (VCC = 5 V), supporting energy-constrained embedded timers.

Applications

Frequency Division

Time Delay Generation

Use Scenario: Reducing a 1 MHz system clock to 61.04 Hz for an AC zero-crossing detector in a solid-state relay.

IC Role / Device Role / Timing Role: Primary frequency divider delivering Q14-equivalent output (1,000,000 ÷ 16,384 ≈ 61.04 Hz) with deterministic phase alignment.

Use Value: Eliminates software-based division overhead and jitter; provides hardware-guaranteed 16.384 μs period resolution at Q0.

Use Scenario: Generating a 100 ms pulse after power-on in a battery-powered sensor node to delay RF transmission until voltage stabilizes.

IC Role / Device Role / Timing Role: Asynchronous delay generator using Q7 (128×) and Q10 (1024×) outputs gated with MR release timing.

Use Value: Achieves accurate, repeatable 100 ms delay without crystal oscillator or RC network drift or temperature sensitivity.

Control Sequencing

LED Multiplexing

Use Scenario: Driving a 16-step stepper motor controller where each step requires a unique 4-bit pattern derived from counter outputs.

IC Role / Device Role / Timing Role: State generator producing sequential binary codes via Q0–Q3; MR resets sequence at end-of-cycle.

Use Value: Replaces 4-bit Johnson counter or microcontroller firmware loop; reduces BOM cost and firmware complexity.

Use Scenario: Scanning 8-digit 7-segment displays in a digital panel meter using common-cathode configuration.

IC Role / Device Role / Timing Role: Scan clock source providing 8-phase timing (Q0–Q2) with Q3 enabling digit blanking between cycles.

Use Value: Ensures uniform segment brightness and eliminates ghosting by guaranteeing precise, glitch-free digit enable edges.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
74HC4020D,118	CMOS-level inputs (VIH = 3.15 V min at VCC = 4.5 V); higher noise margin but incompatible with 5 V TTL drivers without level shift.	Suitable only when entire system uses HC logic or 3.3 V/5 V mixed-signal design with proper level translation.	Select if interfacing exclusively with 74HC or modern MCU GPIOs; avoid when connecting to legacy 74LS/ALS or 5 V microcontrollers with TTL outputs.
CD4020BE	Single-supply range 3 V–15 V; slower (fmax = 3 MHz at 5 V); no TTL input compatibility; wider VCC tolerance but higher propagation skew.	Used in high-voltage analog-timing hybrids (e.g., SMPS feedback loops) but unsuitable for fast, noise-sensitive digital control.	Choose only for legacy designs requiring 12 V operation or where extreme VCC flexibility outweighs speed and noise immunity requirements.

Compared with 74HC4020D,118 and CD4020BE, the 74HCT4020DB,118 uniquely balances TTL interoperability, 125 °C rating, and 25 MHz capability - making it optimal for industrial 5 V systems needing drop-in compatibility and thermal robustness without redesign.

Availability

74HCT4020DB,118 is available at Aetrix Electronics and suitable for industrial control panels, programmable logic sequencers, and embedded timing modules requiring stable component supply across extended temperature ranges and multi-year production cycles.

Supply support for 74HCT4020DB,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 high-volume, high-reliability logic, discrete, and MOSFET solutions for industrial, automotive, and computing markets.

The 74HCT4020 belongs to Nexperia's 74HCT logic family - engineered specifically for seamless integration into legacy 5 V TTL systems while delivering CMOS power efficiency and extended temperature resilience.

FAQ

Can 74HCT4020DB,118 operate at 3.3 V?

No. The 74HCT variant is specified only for 4.5 V to 5.5 V supply. At 3.3 V, input thresholds fall outside TTL specification (VIH would be <2.0 V), causing unreliable recognition of HIGH inputs. Use 74HC4020D,118 for 3.3 V systems with CMOS-level drivers.

Why does Q1 output skip Q1 and Q2 in the pinout?

The 74HCT4020 provides only Q0 and Q3–Q13 (12 outputs total), omitting Q1 and Q2. This is intentional: Q0 gives 2× division, Q3 gives 8×, and higher stages provide coarser divisions needed for timing and control - Q1/Q2 offer minimal functional value in typical ripple counter applications.

Is the MR pin debounced internally?

No. MR is a purely asynchronous, unbuffered input with no internal filtering or hysteresis. External RC debounce or Schmitt-trigger conditioning is required if driven by mechanical switches or noisy control signals to prevent spurious resets.

What is the maximum capacitive load on Q outputs?

Each output is characterized up to 50 pF (per dynamic specs). Driving >50 pF increases propagation delay nonlinearly and may cause output ringing or logic threshold violations. For >50 pF loads, add series termination (22–47 Ω) close to the driver and verify timing margins.

74HCT4020DB,118 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: 74HCT

Package/Case:: 16-SSOP (0.209", 5.30mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: Binary Counter

Direction:: Up

Number of Elements:: 1

Number of Bits per Element:: 14

Reset:: Asynchronous

Timing:: -

Count Rate:: 47 MHz

Trigger Type:: Negative Edge

Voltage - Supply:: 4.5 V ~ 5.5 V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SSOP

74HCT4020DB,118 FAQ

1.How can I place an order for 74HCT4020DB,118 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74HCT4020DB,118 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for 74HCT4020DB,118 reliable?

The price and inventory of 74HCT4020DB,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT4020DB,118 is usually 5 days.

3.What payment methods are accepted for 74HCT4020DB,118?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT4020DB,118 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74HCT4020DB,118?

74HCT4020DB,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74HCT4020DB,118 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for 74HCT4020DB,118?

For technical support, including 74HCT4020DB,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT4020DB,118 requirements.

6.How does Aetrix verify that 74HCT4020DB,118 is sourced from the original manufacturer or authorized distributors?

All 74HCT4020DB,118 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74HCT4020DB,118 meets industry standards.

7.What is the process for return or replacement of 74HCT4020DB,118?

All 74HCT4020DB,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT4020DB,118, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The 74HCT4020DB,118 part is unused and in its original packaging.

Return procedure for 74HCT4020DB,118:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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