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Home > Products > Integrated Circuits (ICs) > Logic > Gates and Inverters

Diodes Incorporated 74AHCT14S14-13

Name: 74AHCT14S14-13
Brand: Diodes Incorporated
SKU: 74AHCT14S14-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74AHCT14S14-13

Manufacturer:: Diodes Incorporated

Category:: Gates and Inverters

Package:: 14-SOIC (0.154", 3.90mm Width)

Datasheet:: 74AHCT14S14-13.pdf

Description:: IC INVERTER 6CH 1-INP 14SO

Quantity:: RFQ Add To RFQ list

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Product details

Overview

74AHCT14S14-13 from Diodes Incorporated is a hex inverter IC with Schmitt-trigger inputs, designed for noise-immune digital signal conditioning in 5V TTL-compatible logic systems. It delivers six independent inverters, operates from 4.5V to 5.5V, provides ±8mA output drive at V_CC = 4.5V, and features hysteresis of 0.5–0.6V for reliable edge detection - used in PC motherboard reset circuits, USB peripheral interface debouncing, and HDD spindle control logic.

For engineers reviewing the 74AHCT14S14-13 datasheet, 74AHCT14S14-13 pinout, 74AHCT14S14-13 application, or 74AHCT14S14-13 equivalent, key selection criteria include input hysteresis voltage (VT+ = 1.9–2.1V, VT− = 0.5–0.6V), propagation delay (3.4ns typ @ CL = 15pF), SO-14 package thermal profile, and TTL-level input compatibility with CMOS power efficiency.

Technical Context

The 74AHCT14S14-13 implements six identical inverting buffers, each with asymmetric Schmitt-trigger thresholds enabling robust noise rejection on slow-rising or noisy digital signals. Its input structure accepts TTL-level voltages (0–5.5V) while maintaining CMOS-compatible quiescent current (20–40μA).

Each gate drives standard push-pull outputs capable of sourcing/sinking 8mA at V_CC = 4.5V, with propagation delays tightly specified across temperature (−40°C to +125°C) and load (15pF/50pF). The device lacks internal pull-ups or enable controls - all six channels operate concurrently and independently.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	4.5V to 5.5V - ensures stable operation across industrial-grade 5V rail tolerances.
Input Hysteresis (ΔVT)	0.5V min @ 4.5V, 0.6V min @ 5.5V - prevents chatter on slow or noisy input edges.
Output Drive Strength	±8mA @ V_CC = 4.5V - sufficient to directly drive multiple 74-series inputs or small LEDs.
Propagation Delay (t_PD)	3.4ns typ @ CL = 15pF, V_CC = 5.5V - supports >100MHz toggle rates in clean signal paths.
Power Dissipation per Gate	14.8pF typical C_pd - enables low dynamic power at high frequencies without thermal derating.
ESD Protection	2kV HBM, 1kV CDM, 200V MM - exceeds JEDEC standards for board-level handling robustness.

Pinout & Package

74AHCT14S14-13 is housed in a 14-pin Small Outline (SO-14) package, 8.53–8.74mm body length, 3.80–3.99mm width, 1.27mm lead pitch, with gull-wing leads and RoHS-compliant matte tin plating.

Pin/Terminal	Circuit Role	Design Meaning
1, 3, 5, 9, 11, 13 (A1–A6)	Independent Inverter Input	Schmitt-triggered logic input per channel; requires no external pull-up/down for defined state.
2, 4, 6, 8, 10, 12 (Y1–Y6)	Independent Inverter Output	Push-pull CMOS output; sinks or sources up to 8mA; compatible with 74LVC, 74HC, and TTL loads.
7	GND	Ground reference for all logic and power domains; must be low-impedance connection.
14	V_CC	Positive supply rail; decoupling capacitor (100nF) required within 10mm of this pin.

Key Features

Feature	Design Value
TTL-Compatible Inputs	Accepts 0–5.5V input range with guaranteed recognition of 2.0V+ as HIGH - eliminates level-shifter need in mixed-logic systems.
Schmitt-Trigger Thresholds	VT+ = 1.9–2.1V, VT− = 0.5–0.6V - enables clean signal regeneration from slow RC decay or EMI-contaminated lines.
Low Quiescent Current	20–40μA ICC @ V_CC = 3.6V - reduces standby power in always-on peripheral logic blocks.
Lead-Free & Green Construction	No intentionally added lead; <900ppm Br/Cl, <1000ppm Sb - meets EU RoHS 2 and halogen-free compliance mandates.

Applications

PC Motherboard Reset Circuit

USB Peripheral Debounce Logic

Use Scenario: Conditioning noisy power-on reset signals from front-panel buttons or supervisor ICs before feeding CPU reset pin.

IC Role / Device Role / Timing Role: Signal conditioner and noise filter - converts slow, bouncing mechanical switch transitions into clean, monotonic logic edges.

Use Value: Eliminates false resets caused by contact bounce or rail ripple; hysteresis ensures ≥100ms immunity to sub-100ns glitches.

Use Scenario: Cleaning up USB enumeration signals from hot-plug detection circuits in hubs or docking stations.

IC Role / Device Role / Timing Role: Input synchronizer and edge shaper - transforms analog-like USB VBUS rise/fall into deterministic logic levels for controller GPIO.

Use Value: Prevents spurious enumeration events; 3.4ns t_PD allows real-time response to <100kHz plug/unplug transients.

HDD Spindle Control Interface

Digital Audio Clock Recovery

Use Scenario: Isolating and inverting tachometer feedback pulses from hard disk drive spindle motors before routing to microcontroller timer inputs.

IC Role / Device Role / Timing Role: Level translator and pulse inverter - adapts open-collector tach signals to 5V CMOS logic while adding noise margin.

Use Value: Enables reliable RPM measurement under EMI-heavy motor environments; ±8mA drive sustains signal integrity over 5cm PCB traces.

Use Scenario: Squaring up jittery crystal oscillator outputs (e.g., from 1.8V XO modules) for SPDIF receiver clock domain alignment.

IC Role / Device Role / Timing Role: Waveform regenerator - reshapes sine-to-square conversion with controlled slew rate and zero-crossing hysteresis.

Use Value: Reduces timing jitter in recovered audio clocks; 0.6V ΔVT suppresses sub-cycle noise without distorting duty cycle.

Equivalent & Alternatives

The following parts are listed as comparable options for similar hex Schmitt-trigger inverter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74AHCT14DR	Same logic function, identical electrical specs; TI SO-14 footprint matches Diodes SO-14 (S14) pinout and dimensions.	No functional difference; validated for same industrial temp range (−40°C to +125°C) and 5V supply use cases.	Select when dual-sourcing or TI-aligned BOMs required; identical layout reuse possible.
74LVC14APW,118	Lower V_CC range (1.65–5.5V); 3.3V-optimized; hysteresis ~0.3V smaller; max I_O = ±24mA.	Better suited for mixed-voltage 3.3V/5V systems; higher drive but reduced noise margin vs. AHCT family.	Choose for 3.3V-centric designs where lower supply headroom exists; verify VIH/VIL compatibility with upstream drivers.

Compared with SN74AHCT14DR and 74LVC14APW,118, the 74AHCT14S14-13 offers optimal noise immunity (0.6V hysteresis) and TTL compatibility at 5V, making it preferred for legacy industrial and PC infrastructure where signal integrity trumps voltage flexibility.

Availability

74AHCT14S14-13 is available at Aetrix Electronics and suitable for PC motherboard reset circuits, USB peripheral debounce logic, and HDD spindle control interfaces requiring stable component supply, long-term lifecycle support, and RoHS-compliant manufacturing.

Supply support for 74AHCT14S14-13 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, cost-optimized components for industrial, computing, and consumer markets.

The 74AHCT14 belongs to Diodes' advanced logic family targeting noise-sensitive 5V digital interfacing - engineered for robust operation in electrically harsh environments like PC chassis, storage subsystems, and peripheral controllers.

FAQ

Can 74AHCT14S14-13 operate at 3.3V?

No. The 74AHCT14S14-13 is specified only for 4.5V to 5.5V operation. At 3.3V, input thresholds become undefined, output drive falls below specification, and hysteresis collapses - risking metastability and excessive ICC. Use 74LVC14 or 74AHC14 for 3.3V systems.

Is the SO-14 package of 74AHCT14S14-13 compatible with standard 0.156" wide SOIC footprints?

Yes. The SO-14 package (S14 code) has 8.53–8.74mm body length and 3.80–3.99mm width, matching JEDEC MS-012 AC standard SOIC-14 dimensions. It fits standard 0.156" (3.96mm) wide SOIC sockets and reflow profiles without modification.

What is the maximum capacitive load this device can drive reliably?

The 74AHCT14S14-13 is characterized up to 50pF load capacitance, with t_PD = 10.0ns max at V_CC = 4.5V. Driving >50pF increases delay nonlinearly and may cause overshoot; for >100pF loads, add series termination or buffer stage to maintain signal integrity.

Does unused input require termination, and if so, how?

Yes. Per datasheet Note 5, all unused inputs must be tied to V_CC or GND - floating inputs cause elevated ICC, unpredictable output states, and potential oscillation. Direct connection (not via resistor) is recommended to avoid noise coupling and ensure static logic level definition.

74AHCT14S14-13 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: 74AHCT

Package/Case:: 14-SOIC (0.154", 3.90mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Logic Type:: Inverter

Number of Circuits:: 6

Number of Inputs:: 1

Features:: -

Voltage - Supply:: 4.5V ~ 5.5V

Current - Quiescent (Max):: 20 µA

Current - Output High, Low:: 8mA, 8mA

Input Logic Level - Low:: 0.5V ~ 0.6V

Input Logic Level - High:: 1.9V ~ 2.1V

Max Propagation Delay @ V, Max CL:: 10ns @ 5V, 50pF

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SO

74AHCT14S14-13 FAQ

1.How can I place an order for 74AHCT14S14-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74AHCT14S14-13 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 74AHCT14S14-13 reliable?

The price and inventory of 74AHCT14S14-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHCT14S14-13 is usually 5 days.

3.What payment methods are accepted for 74AHCT14S14-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHCT14S14-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74AHCT14S14-13?

74AHCT14S14-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74AHCT14S14-13 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 74AHCT14S14-13?

For technical support, including 74AHCT14S14-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHCT14S14-13 requirements.

6.How does Aetrix verify that 74AHCT14S14-13 is sourced from the original manufacturer or authorized distributors?

All 74AHCT14S14-13 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 74AHCT14S14-13 meets industry standards.

7.What is the process for return or replacement of 74AHCT14S14-13?

All 74AHCT14S14-13 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHCT14S14-13, 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 74AHCT14S14-13 part is unused and in its original packaging.

Return procedure for 74AHCT14S14-13:

1.Submit a request within 90 days.

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

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