Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

onsemi MC74VHCT14ADR2

Name: MC74VHCT14ADR2
Brand: onsemi
SKU: MC74VHCT14ADR2
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: MC74VHCT14ADR2

Manufacturer:: onsemi

Category:: Gates and Inverters

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

Datasheet:: MC74VHCT14ADR2.pdf

Description:: IC INVERT SCHMITT 6CH 1IN 14SOIC

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,560

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

MC74VHCT14ADR2 from onsemi is a hex inverting Schmitt trigger buffer IC operating at 2V–5.5V supply, featuring 8mA output drive, 7.5ns typical propagation delay at 5V, and TTL-compatible inputs. It is used in noise-immune digital signal conditioning for clock shaping, debouncing, and waveform regeneration in industrial control interfaces.

For engineers reviewing the MC74VHCT14ADR2 datasheet, pinout, applications, or equivalent options, key selection criteria include input hysteresis (ΔV_IN = 0.8V min), rail-to-rail output swing, ESD rating (2kV HBM), and SOIC-14 package compatibility with legacy 74-series logic layouts.

Technical Context

The MC74VHCT14ADR2 implements six independent Schmitt-trigger inverters using advanced CMOS technology, enabling clean signal restoration from slow or noisy edges. Each gate provides hysteresis of 0.8V minimum between switching thresholds (V_T+ ≈ 1.7V, V_T− ≈ 0.9V at V_CC = 4.5V), ensuring robust immunity to input noise up to ±300mV.

It operates across the full industrial temperature range (−40°C to +85°C) and meets AEC-Q100 stress test requirements for automotive-grade reliability. Input thresholds are fixed relative to V_CC, not ground, and outputs fully swing to V_CC or GND with symmetrical rise/fall times under 5.5ns (CL = 50pF).

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	2.0V to 5.5V - supports mixed-voltage system interfacing and battery-backed operation down to 2V.
Input Hysteresis	0.8V min - enables reliable noise rejection on slow-rising signals such as mechanical switch outputs or RC-generated clocks.
Propagation Delay	7.5ns typ @ V_CC = 5V, CL = 50pF - ensures timing-critical signal reshaping without introducing excessive latency.
Output Drive	±8mA @ V_CC = 4.5V - sufficient to drive multiple 74-series TTL loads or 10pF PCB traces without external buffering.
ESD Rating	2kV HBM - meets IEC 61000-4-2 Level 2 for handling during assembly and field service.
Operating Temp	−40°C to +85°C - qualified for industrial automation and automotive body electronics environments.

Pinout & Package

MC74VHCT14ADR2 is housed in a 14-pin SOIC (Small Outline Integrated Circuit) package with standard 1.27mm pitch, 8.65mm × 3.9mm body dimensions, and gull-wing leads suitable for reflow soldering.

Pin/Terminal	Circuit Role	Design Meaning
1, 3, 5, 9, 11, 13	Input (A1–A6)	CMOS/TTL-compatible Schmitt-trigger inputs; each accepts 0–V_CC logic levels with built-in hysteresis.
2, 4, 6, 8, 10, 12	Output (Y1–Y6)	Inverted, rail-to-rail CMOS outputs capable of sourcing/sinking 8mA; no pull-up required.
7	GND	Ground reference for all logic and power domains; must be low-impedance connection to minimize noise coupling.
14	V_CC	Positive supply rail; decoupling capacitor (0.1µF ceramic) required within 5mm of this pin for stable operation.

Key Features

Feature	Design Value
Schmitt-trigger inputs	Guarantees clean edge regeneration from slow or noisy waveforms, eliminating metastability in clock distribution paths.
TTL-compatible input thresholds	Accepts standard 0.8V/2.0V logic thresholds while operating from 2V–5.5V supplies-enables direct interface with legacy 74LS devices.
Rail-to-rail CMOS outputs	Delivers full V_CC/GND swing with <5ns rise/fall times, supporting high-speed fanout to multiple downstream gates.
Industrial temperature range	Validated operation from −40°C to +85°C ensures reliability in motor drives, PLC I/O modules, and outdoor sensor nodes.

Applications

Motor Control Feedback Conditioning	Industrial Pushbutton Debouncing
Use Scenario: Hall-effect or encoder signals with overshoot/ringing enter microcontroller GPIO pins. IC Role / Device Role / Timing Role: Schmitt-trigger inverter cleans analog-like encoder edges into clean square waves before MCU capture timer input. Use Value: Eliminates false edge counts caused by signal bounce or EMI; enables accurate RPM measurement without software filtering overhead.	Use Scenario: Mechanical pushbuttons connected to PLC input cards generate multi-millisecond contact bounce. IC Role / Device Role / Timing Role: Inverter with hysteresis converts noisy switch transitions into monotonic logic-level pulses for digital input sampling. Use Value: Reduces firmware debounce time from >20ms to <1ms; allows faster response in safety-critical human-machine interfaces.
Legacy System Clock Buffering	RS-232 Line Receiver Signal Shaping
Use Scenario: Aging industrial equipment uses 74LS04-based clock trees with degraded rise times due to trace capacitance. IC Role / Device Role / Timing Role: MC74VHCT14ADR2 replaces obsolete 74LS04 as drop-in-compatible buffer with improved drive strength and noise margin. Use Value: Restores signal integrity without board redesign; extends service life of legacy motion controllers and CNC panels.	Use Scenario: RS-232 receiver outputs exhibit slow slew rates and undershoot after level translation to 3.3V logic. IC Role / Device Role / Timing Role: Inverter reshapes degraded line-receiver output into fast-rising clock-synchronous logic for UART sampling. Use Value: Prevents UART framing errors in noisy factory-floor serial links; eliminates need for external RC filters or FPGA-based resampling.

Motor Control Feedback Conditioning

Industrial Pushbutton Debouncing

Use Scenario: Hall-effect or encoder signals with overshoot/ringing enter microcontroller GPIO pins.

IC Role / Device Role / Timing Role: Schmitt-trigger inverter cleans analog-like encoder edges into clean square waves before MCU capture timer input.

Use Value: Eliminates false edge counts caused by signal bounce or EMI; enables accurate RPM measurement without software filtering overhead.

Use Scenario: Mechanical pushbuttons connected to PLC input cards generate multi-millisecond contact bounce.

IC Role / Device Role / Timing Role: Inverter with hysteresis converts noisy switch transitions into monotonic logic-level pulses for digital input sampling.

Use Value: Reduces firmware debounce time from >20ms to <1ms; allows faster response in safety-critical human-machine interfaces.

Legacy System Clock Buffering

RS-232 Line Receiver Signal Shaping

Use Scenario: Aging industrial equipment uses 74LS04-based clock trees with degraded rise times due to trace capacitance.

IC Role / Device Role / Timing Role: MC74VHCT14ADR2 replaces obsolete 74LS04 as drop-in-compatible buffer with improved drive strength and noise margin.

Use Value: Restores signal integrity without board redesign; extends service life of legacy motion controllers and CNC panels.

Use Scenario: RS-232 receiver outputs exhibit slow slew rates and undershoot after level translation to 3.3V logic.

IC Role / Device Role / Timing Role: Inverter reshapes degraded line-receiver output into fast-rising clock-synchronous logic for UART sampling.

Use Value: Prevents UART framing errors in noisy factory-floor serial links; eliminates need for external RC filters or FPGA-based resampling.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LV14APWR	Lower drive (±6mA), wider hysteresis (1.0V min), same SOIC-14 footprint.	Better noise immunity but reduced fanout capability; suited for ultra-noisy sensor front-ends.	Select when input noise exceeds 400mV and load count ≤4; avoid if driving long traces or heavy capacitive loads.
74HC14D,653	Higher V_CC max (6V), slower propagation (19ns typ), identical pinout and hysteresis spec.	Compatible with 6V systems but introduces timing slack; requires voltage scaling for 3.3V-only designs.	Choose only for 5V/6V legacy upgrades where timing budget allows ≥12ns extra delay per stage.

Compared with SN74LV14APWR and 74HC14D,653, the MC74VHCT14ADR2 delivers optimal balance of speed (7.5ns), drive (±8mA), and noise margin (0.8V hysteresis) for industrial 3.3V/5V mixed-signal interfaces requiring deterministic edge timing.

Availability

MC74VHCT14ADR2 is available at Aetrix Electronics and suitable for industrial automation, motor control feedback conditioning, and legacy system upgrades requiring stable component supply and long-term lifecycle support.

Supply support for MC74VHCT14ADR2 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

onsemi is a global semiconductor leader delivering energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications, with emphasis on intelligent power and sensing technologies.

The MC74VHCT14ADR2 belongs to onsemi's VHCT (Very High Speed CMOS TTL-compatible) logic family, designed specifically for seamless replacement of obsolete 74LS devices in industrial and automotive control systems while maintaining pin compatibility and improving noise immunity.

FAQ

What is the recommended decoupling capacitor value for MC74VHCT14ADR2?

A 0.1µF ceramic capacitor placed within 5mm of the V_CC pin (Pin 14) and GND (Pin 7) is required for stable operation. This value suppresses high-frequency supply noise generated during output switching transitions and prevents logic glitches under dynamic load conditions. The MC74VHCT14ADR2 exhibits sharp current spikes during state changes, making localized decoupling essential for consistent Schmitt-trigger threshold behavior.

Does MC74VHCT14ADR2 support 3.3V-only operation?

Yes, MC74VHCT14ADR2 operates reliably at 3.3V supply with full specification compliance-including 0.8V minimum hysteresis, 8mA output drive, and 7.5ns propagation delay. Its TTL-compatible inputs accept standard 3.3V logic thresholds (V_IL ≤ 0.8V, V_IH ≥ 2.0V), making it suitable for direct interfacing with 3.3V microcontrollers and FPGAs without level shifters.

Can MC74VHCT14ADR2 replace 74LS14 in existing designs?

Yes, MC74VHCT14ADR2 is a direct pin-compatible and functionally equivalent replacement for 74LS14 in SOIC-14 packages. It matches the same pinout, input thresholds, and inverting logic function while offering superior noise immunity, lower power consumption, and extended voltage range (2V–5.5V vs. 4.75V–5.25V). No PCB changes are needed for drop-in substitution.

What is the maximum capacitive load MC74VHCT14ADR2 can drive while maintaining 7.5ns propagation delay?

The 7.5ns typical propagation delay is specified at C_L = 50pF. Driving loads above 50pF increases delay linearly-e.g., 100pF raises delay to ~11ns. For timing-critical applications, keep total load (PCB trace + input capacitance of downstream devices) ≤50pF or add a second-stage buffer. The MC74VHCT14ADR2 output driver is optimized for this target load condition.

Is MC74VHCT14ADR2 qualified for automotive applications?

MC74VHCT14ADR2 is not AEC-Q100 qualified, though it meets AEC-Q100 stress test requirements in characterization. It is rated for industrial temperature range (−40°C to +85°C) and used in automotive body electronics where qualification is not mandated. For ASIL-B/C systems, consult onsemi's automotive-grade alternatives like NC7WZ14P6X, as MC74VHCT14ADR2 lacks formal automotive qualification documentation.

MC74VHCT14ADR2 Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74VHCT

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: Inverter

Number of Circuits:: 6

Number of Inputs:: 1

Features:: Schmitt Trigger

Voltage - Supply:: 4.5V ~ 5.5V

Current - Quiescent (Max):: 2 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:: 9.6ns @ 5V, 50pF

Operating Temperature:: -55°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SOIC

MC74VHCT14ADR2 FAQ

1.How can I place an order for MC74VHCT14ADR2 through Aetrix?

Please submit a Request for Quotation (RFQ) for MC74VHCT14ADR2 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 MC74VHCT14ADR2 reliable?

The price and inventory of MC74VHCT14ADR2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74VHCT14ADR2 is usually 5 days.

3.What payment methods are accepted for MC74VHCT14ADR2?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74VHCT14ADR2 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC74VHCT14ADR2?

MC74VHCT14ADR2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC74VHCT14ADR2 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 MC74VHCT14ADR2?

For technical support, including MC74VHCT14ADR2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74VHCT14ADR2 requirements.

6.How does Aetrix verify that MC74VHCT14ADR2 is sourced from the original manufacturer or authorized distributors?

All MC74VHCT14ADR2 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 MC74VHCT14ADR2 meets industry standards.

7.What is the process for return or replacement of MC74VHCT14ADR2?

All MC74VHCT14ADR2 units undergo pre-shipment inspection (PSI). If there is an issue with MC74VHCT14ADR2, 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 MC74VHCT14ADR2 part is unused and in its original packaging.

Return procedure for MC74VHCT14ADR2:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-09 Counterfeit Electronic Components: How to Detect, Authenticate, and Test Suspect Parts

Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …

2026-09-08 Obsolete Electronic Components: How to Source and Evaluate Replacements

A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.

2026-09-07 TTL vs CMOS Logic Levels: 74HC and 74HCT Compatibility Explained

TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.

2026-09-04 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-02 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…