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

Diodes Incorporated 74HCT14S14-13

Name: 74HCT14S14-13
Brand: Diodes Incorporated
SKU: 74HCT14S14-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74HCT14S14-13

Manufacturer:: Diodes Incorporated

Category:: Gates and Inverters

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

Datasheet:: 74HCT14S14-13.pdf

Description:: IC INVERT SCHMITT 6CH 1-INP 14SO

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Product details

Overview

74HCT14S14-13 from Diodes Incorporated is a hex Schmitt-trigger inverter IC in SO-14 package, operating from 4.5V to 5.5V supply, delivering 4mA output drive at V_CC = 4.5V, with input hysteresis of 0.4V and propagation delay ≤51ns (–40°C to +125°C). It serves as noise-immune signal conditioning logic in digital interface stages of embedded control systems.

For engineers reviewing the 74HCT14S14-13 datasheet, 74HCT14S14-13 pinout, 74HCT14S14-13 application, or 74HCT14S14-13 equivalent, key selection criteria include TTL-compatible inputs, guaranteed hysteresis for slow-rising signals, SO-14 thermal performance, and industrial temperature range support up to +125°C.

Technical Context

The 74HCT14S14-13 implements six independent CMOS inverters, each with Schmitt-trigger inputs providing fixed hysteresis (ΔV_T = 0.4V) to reject analog noise on digital control lines. Input thresholds are specified at VT+ = 2.1V and VT− = 0.6V under 5.5V supply.

It uses standard push-pull outputs with symmetrical sourcing/sinking capability (±4mA), operates within –40°C to +125°C ambient, and meets JESD22 ESD ratings: 2kV HBM, 1kV CDM, and 200V MM - enabling robust deployment in noisy industrial environments.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	4.5V to 5.5V - ensures compatibility with legacy 5V TTL and mixed-voltage logic rails
Hysteresis (ΔV_T)	0.4V - provides noise margin ≥300mV against EMI-induced glitches on slow-switching signals
Output Drive	±4mA at V_CC = 4.5V - sufficient to directly drive multiple 74HCT inputs or small LEDs without buffering
Propagation Delay	≤51ns max (–40°C to +125°C) - supports reliable timing in sub-10MHz clock distribution and debounce circuits
Input Thresholds	VT+ = 2.1V, VT− = 0.6V @ 5.5V - enables clean switching on RC-generated waveforms with rise times >1μs
ESD Protection	2kV HBM, 1kV CDM - exceeds IEC 61000-4-2 Level 2 for board-level handling and system integration

Pinout & Package

74HCT14S14-13 is housed in a 14-pin Small Outline (SO-14) package with 1.27mm pitch, 8.6mm × 3.9mm body, and 1.73mm max height - optimized for automated SMT assembly and thermal dissipation in dense PCB layouts.

Pin/Terminal	Circuit Role	Design Meaning
1, 3, 5, 9, 11, 13	Input (1A–6A)	Independent Schmitt-trigger inputs accepting TTL-level signals; each requires no external pull-up for clean edge detection
2, 4, 6, 8, 10, 12	Output (1Y–6Y)	Inverting push-pull outputs capable of driving capacitive loads ≤50pF with <22ns transition time
7	GND	Ground reference for all logic and power domains; must be low-impedance to maintain noise immunity
14	V_CC	Positive supply rail; decoupling capacitor (100nF) required within 5mm for stable hysteresis operation

Key Features

Feature	Design Value
Schmitt-trigger inputs per gate	Guaranteed 0.4V hysteresis eliminates chatter on slow or noisy control lines (e.g., mechanical switch inputs)
TTL-compatible input thresholds	VT+ = 2.1V / VT− = 0.6V @ 5.5V enables direct interfacing with 74LS, 74ALS, and microcontroller GPIO
Industrial temperature range	–40°C to +125°C operation supports deployment in automotive engine control modules and industrial PLC I/O cards
Low static current	ICC ≤ 40μA @ 6.0V ensures <200μW quiescent power per gate - critical for battery-backed monitoring circuits

Applications

Motor Control Feedback Conditioning

Industrial Pushbutton Debounce

Use Scenario: Converting noisy hall-effect sensor outputs into clean square waves for BLDC motor commutation timing.

IC Role / Device Role / Timing Role: Signal conditioner that converts analog-edge transitions into deterministic logic edges with jitter suppression.

Use Value: Eliminates false triggering caused by EMI from motor windings, ensuring accurate rotor position sampling at up to 20kHz.

Use Scenario: Debouncing mechanical pushbuttons in factory HMI panels exposed to vibration and ESD.

IC Role / Device Role / Timing Role: Input stage that rejects contact bounce (typically 5–15ms) without software polling or RC delays.

Use Value: Reduces firmware overhead and guarantees single-event detection even after 100,000 actuations under 50g shock.

Legacy System Bus Interface

Power Sequencing Monitor

Use Scenario: Level-shifting and noise filtering between 3.3V microcontrollers and 5V legacy peripheral buses (e.g., ISA, LPC).

IC Role / Device Role / Timing Role: Bidirectional signal integrity guard that restores logic margins degraded by long traces and crosstalk.

Use Value: Enables reliable communication over 15cm ribbon cables without added termination or repeaters.

Use Scenario: Monitoring delayed power-good signals from DC/DC converters in multi-rail FPGA power systems.

IC Role / Device Role / Timing Role: Edge detector that triggers reset assertion only after stable voltage crossing with hysteresis.

Use Value: Prevents premature FPGA configuration by rejecting ripple-induced false positives during 100ms ramp-up periods.

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
SN74HCT14DR	Same logic function, identical hysteresis and drive specs; SO-14 package with different marking and reel quantity (2500 vs 2500)	No functional difference; pinout and thermal profile match exactly	Select when TI-sourced supply chain alignment is required for audit-trail compliance
MC74HCT14ADTR2G	Identical electrical specs but TSSOP-14 package (4.4mm × 5.0mm); 1.2mm height vs SO-14's 1.73mm	Enables higher board density but requires tighter solder paste volume control due to finer pitch (0.65mm vs 1.27mm)	Choose for space-constrained designs where thermal load is lower and reflow profiling is validated

Compared with SN74HCT14DR and MC74HCT14ADTR2G, the 74HCT14S14-13 offers identical logic behavior and SO-14 mechanical compatibility while supporting Diodes Inc.'s extended lifecycle commitment and green material compliance (Br/Cl <900ppm, Sb <1000ppm).

Availability

74HCT14S14-13 is available at Aetrix Electronics and suitable for industrial control panels, automotive body electronics, and legacy system upgrades requiring stable component supply across extended product lifecycles.

Supply support for 74HCT14S14-13 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 components for industrial, automotive, and computing markets.

The 74HCT logic family targets robust 5V digital interfacing in harsh environments, emphasizing noise immunity, wide temperature operation, and long-term supply stability for mission-critical systems.

FAQ

What is the maximum recommended capacitive load for 74HCT14S14-13 outputs?

The datasheet specifies switching characteristics with CL = 50pF. Driving loads beyond this increases propagation delay nonlinearly and may cause overshoot; for >50pF, add series resistance (22–47Ω) near the output to damp ringing and maintain signal integrity.

Can unused inputs be left floating?

No - floating inputs risk oscillation and excessive ICC due to undefined threshold states. Per datasheet Note 6, all unused inputs must be tied to V_CC or GND via direct connection or 10kΩ resistor to ensure stable logic levels and prevent shoot-through current.

Does 74HCT14S14-13 support mixed-voltage operation (e.g., 3.3V inputs)?

No - its inputs are TTL-compatible (VIH ≥ 2.0V, VIL ≤ 0.8V), not 3.3V CMOS-level compatible. Applying 3.3V signals risks marginal VIH margin; use level translators like TXB0104 or resistive dividers for safe interfacing with 3.3V systems.

Is the SO-14 package RoHS-compliant and lead-free?

Yes - the 74HCT14S14-13 is fully RoHS 2 compliant (2011/65/EU), with no purposely added lead, halogen-free (<900ppm Br/Cl), and antimony-free (<1000ppm), meeting Diodes Inc.'s "Green" device definition per Note 3 in DS35333.

74HCT14S14-13 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: 74HCT

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:: Schmitt Trigger Input

Voltage - Supply:: 4.5V ~ 5.5V

Current - Quiescent (Max):: 20 µA

Current - Output High, Low:: 4mA, 4mA

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

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

Max Propagation Delay @ V, Max CL:: 34ns @ 4.5V, 50pF

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SO

74HCT14S14-13 FAQ

1.How can I place an order for 74HCT14S14-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74HCT14S14-13 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 74HCT14S14-13 reliable?

The price and inventory of 74HCT14S14-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HCT14S14-13 is usually 5 days.

3.What payment methods are accepted for 74HCT14S14-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HCT14S14-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74HCT14S14-13?

74HCT14S14-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74HCT14S14-13 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 74HCT14S14-13?

For technical support, including 74HCT14S14-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HCT14S14-13 requirements.

6.How does Aetrix verify that 74HCT14S14-13 is sourced from the original manufacturer or authorized distributors?

All 74HCT14S14-13 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 74HCT14S14-13 meets industry standards.

7.What is the process for return or replacement of 74HCT14S14-13?

All 74HCT14S14-13 units undergo pre-shipment inspection (PSI). If there is an issue with 74HCT14S14-13, 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 74HCT14S14-13 part is unused and in its original packaging.

Return procedure for 74HCT14S14-13:

1.Submit a request within 90 days.

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

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