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

Nexperia USA Inc. 74AHC14D,118

Name: 74AHC14D,118
Brand: Nexperia USA Inc.
SKU: 74AHC14D,118
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74AHC14D,118

Manufacturer:: Nexperia USA Inc.

Category:: Gates and Inverters

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

Datasheet:: 74AHC14D,118.pdf

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

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Product details

Overview

74AHC14D,118 from Nexperia is a hex inverting Schmitt trigger IC with CMOS-level inputs, 2.0–5.5 V supply range, overvoltage-tolerant inputs up to 5.5 V, and operation across –40 °C to +125 °C. It provides six independent hysteresis-enabled inverters for noise-immune signal conditioning in mixed-voltage digital interfaces, such as level translation between 3.3 V and 5 V logic domains.

For engineers reviewing the 74AHC14D,118 datasheet, 74AHC14D,118 pinout, 74AHC14D,118 application, or 74AHC14D,118 equivalent, this device is selected for robust input signal cleanup, relaxation oscillator generation, and TTL-to-CMOS interface translation where hysteresis and wide V_CC tolerance are required.

Technical Context

This device implements six independent Schmitt-trigger inverter stages, each with asymmetric positive- and negative-going input thresholds (e.g., VT+ = 3.15 V, VT− = 1.35 V at V_CC = 4.5 V), delivering 1.8 V typical hysteresis. Input clamping and overvoltage tolerance enable safe interfacing with signals exceeding V_CC, eliminating external protection diodes in mixed-supply systems.

Propagation delay is specified from 3.2 ns (V_CC = 5.0 V, C_L = 15 pF) to 13.5 ns (V_CC = 5.0 V, C_L = 50 pF, –40 °C to +125 °C), with balanced t_PLH/t_PHL. Static current draw remains below 40 μA at V_CC = 5.5 V, supporting low-power embedded control and sensor interface applications.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply voltage	2.0 V to 5.5 V - supports direct integration into both 3.3 V and 5 V systems without level shifters.
Input threshold hysteresis	1.8 V typical at V_CC = 4.5 V - enables reliable noise rejection on slow-rising or noisy signals like mechanical switch inputs.
Propagation delay	3.2 ns min / 11.0 ns max (V_CC = 4.5–5.5 V, C_L = 15 pF) - ensures timing predictability in clockless signal conditioning paths.
Output drive strength	±8 mA at V_CC = 4.5 V - sufficient to directly drive multiple 74-series inputs or small capacitive loads (<50 pF).
Input overvoltage tolerance	Up to 5.5 V regardless of V_CC - allows safe connection to 5 V buses while operating from 3.3 V supply.
Operating temperature	–40 °C to +125 °C - qualified for under-hood automotive modules and industrial motor control environments.
ESD rating	HBM >2000 V, CDM >1000 V - reduces risk of field failure during handling and board assembly.

Pinout & Package

74AHC14D,118 uses the SO14 (SOT108-1) package: plastic small outline, 14-pin, 3.9 mm body width, standard 1.27 mm lead pitch. Pin 1 is index-marked; pin 7 is GND; pin 14 is V_CC.

Pin/Terminal	Circuit Role	Design Meaning
1, 3, 5, 9, 11, 13	Data input (1A–6A)	Six Schmitt-trigger input terminals - accept overvoltage signals up to 5.5 V and convert them to clean digital outputs.
2, 4, 6, 8, 10, 12	Data output (1Y–6Y)	Six inverted, hysteresis-filtered outputs - each drives one CMOS/TTL load with rail-to-rail swing.
7	GND	Reference ground for all I/O and internal circuitry - must be connected to system 0 V plane.
14	V_CC	Main supply rail - powers all six inverters; decoupling capacitor (100 nF) recommended adjacent to pin.

Key Features

Feature	Design Value
Wide V_CC range	2.0–5.5 V operation enables single-part support across legacy 5 V and modern 3.3 V designs.
Overvoltage-tolerant inputs	Inputs withstand 5.5 V regardless of V_CC - eliminates need for external clamping diodes in mixed-voltage interconnects.
High noise immunity	1.8 V typical hysteresis at 4.5 V supply - rejects >1.8 V peak-to-peak noise on input lines without false triggering.
CMOS low power dissipation	ICC ≤ 40 μA at V_CC = 5.5 V - suitable for battery-powered sensor nodes and always-on monitoring circuits.
Industrial temperature grade	Specified from –40 °C to +125 °C - meets requirements for motor drives, PLC I/O modules, and automotive body electronics.

Applications

Industrial Sensor Interface

Relaxation Oscillator

Use Scenario: Conditioning signals from mechanical switches, potentiometers, or analog sensors with slow edges and EMI coupling.

IC Role / Device Role / Timing Role: Six independent Schmitt-trigger inverters clean and debounce six separate analog or mechanical inputs before MCU sampling.

Use Value: Eliminates software debouncing overhead and prevents metastability in microcontroller GPIOs by delivering glitch-free digital transitions.

Use Scenario: Generating precise low-frequency clock signals (1 Hz–100 kHz) using only R and C components.

IC Role / Device Role / Timing Role: One inverter stage forms the core of a feedback oscillator with external RC network; remaining five inverters provide buffering or additional timing channels.

Use Value: Enables low-cost, component-minimal clock generation without quartz crystals or dedicated timer ICs.

Level Translation Bridge

Digital Signal Integrity Enhancer

Use Scenario: Interfacing 5 V legacy peripherals (e.g., encoders, displays) with 3.3 V microcontrollers in mixed-voltage systems.

IC Role / Device Role / Timing Role: Inverter acts as unidirectional level translator - accepts 5 V inputs while powered from 3.3 V, outputs 0/3.3 V logic levels.

Use Value: Avoids dedicated level-shifter ICs and associated BOM cost, while maintaining signal integrity through hysteresis.

Use Scenario: Cleaning degraded digital waveforms from long PCB traces, cables, or optocouplers before FPGA or MCU input.

IC Role / Device Role / Timing Role: Each inverter restores edge sharpness and suppresses ringing/noise on one signal line via hysteresis and gain.

Use Value: Prevents setup/hold violations and false sampling in high-noise industrial environments without redesigning layout.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
74AHCT14D,118	TTL-compatible inputs (VIH = 2.0 V min), lower VT+ (1.9 V at V_CC = 4.5 V); identical package and pinout.	Better suited for interfacing with legacy 5 V TTL outputs; less tolerant of sub-2 V noise on inputs.	Select when driving from standard TTL sources; avoid if interfacing with CMOS outputs near V_CC/2.
SN74LV14APWR	Nexperia's 74LV14 has narrower V_CC range (2.0–5.5 V same), but lower VT+ (1.7 V typ at 3.3 V) and higher ICC (100 μA max).	Optimized for 3.3 V-only systems; not rated for full –40 °C to +125 °C industrial use (only –40 °C to +105 °C).	Prefer for cost-sensitive 3.3 V consumer applications; avoid in extended-temperature industrial deployments.

Compared with 74AHCT14D,118, the 74AHC14D,118 offers superior noise margin on CMOS inputs and wider voltage compatibility, while SN74LV14APWR trades temperature range and quiescent current for lower cost in non-extended environments.

Availability

74AHC14D,118 is available at Aetrix Electronics and suitable for industrial sensor interfaces, relaxation oscillators, level translation bridges, and digital signal integrity enhancement requiring stable component supply across automotive and industrial temperature ranges.

Supply support for 74AHC14D,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, with leadership in automotive-qualified and industrial-grade components.

The 74AHC series targets general-purpose, high-speed CMOS logic applications demanding low power, wide supply range, and robust noise immunity - especially in mixed-voltage embedded control and interface systems.

FAQ

Can 74AHC14D,118 operate with V_CC = 2.5 V?

Yes. The device is fully specified from 2.0 V to 5.5 V. At V_CC = 2.5 V, input thresholds scale proportionally (VT+ ≈ 1.2 V, VT− ≈ 0.6 V), hysteresis remains ~0.6 V, and propagation delay increases to ~15 ns (C_L = 15 pF). All six inverters function reliably within datasheet limits.

Is pin 14 (V_CC) required to be decoupled?

Yes. A 100 nF ceramic capacitor placed between pin 14 and pin 7 (GND), as close as possible to the package, is mandatory to suppress switching noise and ensure stable operation. Without it, propagation delays may vary, and output glitches can occur during simultaneous switching of multiple inverters.

What is the maximum capacitive load per output?

The datasheet specifies timing up to 50 pF. Driving >50 pF increases propagation delay nonlinearly and may cause output rise/fall time degradation. For loads >50 pF, add a series resistor (22–47 Ω) near the driver to dampen ringing and maintain signal integrity - verified in Nexperia application note AN10862.

Does 74AHC14D,118 support hot-swap or live-insertion?

No. The device lacks hot-swap protection circuitry. Applying V_CC while inputs are already biased (e.g., from a powered bus) may cause latch-up or excessive current flow. Always power V_CC before applying input signals, and ensure GND is established first during connector mating.

74AHC14D,118 Specifications

Product attributes: Attribute value

Manufacturer:: Nexperia USA Inc.

Series:: 74AHC

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

Voltage - Supply:: 2V ~ 5.5V

Current - Quiescent (Max):: 2 µA

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

Input Logic Level - Low:: 0.9V ~ 1.65V

Input Logic Level - High:: 2.2V ~ 3.85V

Max Propagation Delay @ V, Max CL:: 10.6ns @ 5V, 50pF

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SO

74AHC14D,118 FAQ

1.How can I place an order for 74AHC14D,118 through Aetrix?

Please submit a Request for Quotation (RFQ) for 74AHC14D,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 74AHC14D,118 reliable?

The price and inventory of 74AHC14D,118 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74AHC14D,118 is usually 5 days.

3.What payment methods are accepted for 74AHC14D,118?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74AHC14D,118 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74AHC14D,118?

74AHC14D,118 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74AHC14D,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 74AHC14D,118?

For technical support, including 74AHC14D,118 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74AHC14D,118 requirements.

6.How does Aetrix verify that 74AHC14D,118 is sourced from the original manufacturer or authorized distributors?

All 74AHC14D,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 74AHC14D,118 meets industry standards.

7.What is the process for return or replacement of 74AHC14D,118?

All 74AHC14D,118 units undergo pre-shipment inspection (PSI). If there is an issue with 74AHC14D,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 74AHC14D,118 part is unused and in its original packaging.

Return procedure for 74AHC14D,118:

1.Submit a request within 90 days.

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

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