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

onsemi MC74HC1G14DTT1G

Name: MC74HC1G14DTT1G
Brand: onsemi
SKU: MC74HC1G14DTT1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC74HC1G14DTT1G

Manufacturer:: onsemi

Category:: Gates and Inverters

Package:: SOT-23-5 Thin, TSOT-23-5

Datasheet:: MC74HC1G14DTT1G.pdf

Description:: IC INVERT SCHMITT 1CH 1INP 5TSOP

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Product details

Overview

MC74HC1G14DTT1G from onsemi is a single high-speed CMOS inverter with Schmitt-trigger input, fabricated using silicon gate CMOS technology. It provides hysteresis (V_H = 0.50 V typ at V_CC = 5.5 V), balanced propagation delays (t_PLH = t_PHL = 7 ns typ at 5 V), and ±2 mA output drive, enabling robust signal conditioning in noisy digital interfaces.

For engineers reviewing the MC74HC1G14DTT1G datasheet, pinout, applications, or equivalent options, this page delivers verified electrical parameters, SC-74A package mapping, Schmitt-trigger threshold behavior, and real-world use cases in sensor interfacing and clock cleanup circuits.

Technical Context

The MC74HC1G14DTT1G implements a five-stage CMOS inverter chain with buffered output to ensure high noise immunity and stable switching. Its Schmitt-trigger input has asymmetric thresholds-VT⁺ = 3.15 V and VT⁻ = 1.35 V at V_CC = 4.5 V-providing 1.8 V hysteresis for reliable noise rejection in slow-rising signals.

It operates across V_CC = 2.0–6.0 V and supports industrial temperature range (−55 °C to +125 °C). The device exhibits symmetrical output impedance (I_OH = I_OL = 2 mA) and low quiescent current (I_CC ≤ 1 µA max at 25 °C), making it suitable for battery-powered and mixed-voltage logic systems.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.0 V to 6.0 V - supports dual-supply systems and direct interface with 3.3 V/5 V logic families
t_PD (Typ)	7 ns at V_CC = 5 V, C_L = 15 pF - enables timing-critical signal inversion in high-frequency control paths
V_T+/V_T−	3.15 V / 1.35 V at V_CC = 4.5 V - defines 1.8 V hysteresis window for noise margin in analog-sourced digital inputs
I_OUT (Max)	±12.5 mA - sufficient to drive multiple 74HC inputs or small LEDs without external buffering
Operating Temp	−55 °C to +125 °C - qualified for automotive under-hood and industrial motor-control environments
I_IN Leakage	≤ 1.0 µA max at V_IN = 6.0 V - ensures minimal loading on high-impedance sensor outputs

Pinout & Package

MC74HC1G14DTT1G is packaged in SC-74A (SOT-23-5), a 3.00 mm × 1.50 mm × 0.95 mm surface-mount package with 0.95 mm pitch and moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
1	GND	Ground reference for all internal logic and output stages; must be low-impedance connection to minimize ground bounce
2	N/C	No internal connection - left unconnected; not usable as thermal pad or auxiliary terminal
3	A	Schmitt-trigger input - accepts slow or noisy signals (e.g., from mechanical switches or analog sensors) and produces clean digital transitions
4	V_CC	Positive supply rail - powers all internal stages; requires local 0.1 µF decoupling capacitor
5	Y	Inverted output - provides complementary logic state with rail-to-rail swing and matched rise/fall times

Key Features

Feature	Design Value
Schmitt-trigger input with 1.8 V hysteresis at 4.5 V	Rejects up to 1.8 V of superimposed noise on input signals without false triggering
Balanced propagation delays (t_PLH ≈ t_PHL)	Ensures symmetrical duty cycle preservation when inverting clock or PWM signals
Low ICC ≤ 1 µA max at 25 °C	Reduces standby power in always-on sensor nodes and IoT edge devices
Pb-free, Halogen-free, RoHS-compliant	Meets IPC-J-STD-020 reflow profile requirements and environmental compliance mandates for global OEMs

Applications

Industrial Sensor Interface	Microcontroller Reset Conditioning
Use Scenario: Clean digital signal generation from slow-rising thermistor or potentiometer outputs in PLC analog input modules. IC Role / Device Role / Timing Role: Signal conditioner that converts analog-derived voltage ramps into noise-immune square waves for microcontroller ADC trigger or GPIO sampling. Use Value: Eliminates need for external RC filtering and comparator circuitry by integrating hysteresis directly into the logic stage.	Use Scenario: Debouncing and stabilizing manual reset button signals before feeding to MCU reset pin. IC Role / Device Role / Timing Role: Input conditioner ensuring only clean, monotonic transitions reach the reset controller, preventing spurious resets during switch contact bounce. Use Value: Guarantees minimum pulse width compliance for ARM Cortex-M reset specifications without software debouncing overhead.
RS-232 Level Translator Input Stage	Crystal Oscillator Buffer
Use Scenario: Converting legacy RS-232 line receiver outputs (±3 V to ±15 V) to 3.3 V logic levels via resistive divider + Schmitt inverter. IC Role / Device Role / Timing Role: Threshold translator that rejects line-induced transients and ensures deterministic logic-level interpretation. Use Value: Prevents metastability in UART receivers caused by slow or noisy RS-232 signal edges entering digital logic domains.	Use Scenario: Isolating and amplifying low-power Pierce oscillator outputs driving multiple downstream clock loads. IC Role / Device Role / Timing Role: Low-jitter buffer providing gain and drive strength while preserving waveform integrity and phase stability. Use Value: Enables fan-out to three or more synchronous peripherals without degrading oscillator loop stability or increasing jitter.

Industrial Sensor Interface

Microcontroller Reset Conditioning

Use Scenario: Clean digital signal generation from slow-rising thermistor or potentiometer outputs in PLC analog input modules.

IC Role / Device Role / Timing Role: Signal conditioner that converts analog-derived voltage ramps into noise-immune square waves for microcontroller ADC trigger or GPIO sampling.

Use Value: Eliminates need for external RC filtering and comparator circuitry by integrating hysteresis directly into the logic stage.

Use Scenario: Debouncing and stabilizing manual reset button signals before feeding to MCU reset pin.

IC Role / Device Role / Timing Role: Input conditioner ensuring only clean, monotonic transitions reach the reset controller, preventing spurious resets during switch contact bounce.

Use Value: Guarantees minimum pulse width compliance for ARM Cortex-M reset specifications without software debouncing overhead.

RS-232 Level Translator Input Stage

Crystal Oscillator Buffer

Use Scenario: Converting legacy RS-232 line receiver outputs (±3 V to ±15 V) to 3.3 V logic levels via resistive divider + Schmitt inverter.

IC Role / Device Role / Timing Role: Threshold translator that rejects line-induced transients and ensures deterministic logic-level interpretation.

Use Value: Prevents metastability in UART receivers caused by slow or noisy RS-232 signal edges entering digital logic domains.

Use Scenario: Isolating and amplifying low-power Pierce oscillator outputs driving multiple downstream clock loads.

IC Role / Device Role / Timing Role: Low-jitter buffer providing gain and drive strength while preserving waveform integrity and phase stability.

Use Value: Enables fan-out to three or more synchronous peripherals without degrading oscillator loop stability or increasing jitter.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC1G14DBVR	Lower V_CC range (1.65–5.5 V); faster t_PD = 4.5 ns typ at 3.3 V; higher I_OUT = ±24 mA	Better suited for 1.8 V/3.3 V systems; less tolerant of 5 V operation than MC74HC1G14DTT1G	Select when operating below 3.3 V or requiring higher drive strength; verify V_CC compatibility with host system.
74AHC1G14GW,125	Wider V_CC range (2.0–5.5 V); lower I_CC = 0.1 µA typ; identical SC-74A footprint	Superior static power efficiency; slightly reduced noise immunity due to narrower hysteresis (1.4 V at 5 V)	Prefer for ultra-low-power battery applications where hysteresis margin >1.4 V is acceptable.

Compared with SN74LVC1G14DBVR and 74AHC1G14GW,125, the MC74HC1G14DTT1G offers broader 2.0–6.0 V operation and higher noise immunity (1.8 V hysteresis), making it optimal for mixed-voltage industrial designs where 5 V logic coexists with 3.3 V controllers and noisy sensor inputs.

Availability

MC74HC1G14DTT1G is available at Aetrix Electronics and suitable for industrial sensor interface, microcontroller reset conditioning, RS-232 level translation, and crystal oscillator buffering requiring stable component supply across extended temperature ranges.

Supply support for MC74HC1G14DTT1G 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 (formerly ON Semiconductor) is a global semiconductor manufacturer specializing in energy-efficient power management, analog, logic, and sensing solutions for automotive, industrial, and cloud infrastructure markets.

The MC74HC1G14DTT1G belongs to the HC logic family designed for high-noise-immunity digital signal conditioning in harsh environments, emphasizing reliability, wide supply range, and Schmitt-trigger robustness over raw speed.

FAQ

What is the maximum supply voltage rating for MC74HC1G14DTT1G?

The absolute maximum DC supply voltage (V_CC) for MC74HC1G14DTT1G is +6.5 V, but the recommended operating range is 2.0 V to 6.0 V per the datasheet. Operating continuously above 6.0 V risks permanent damage and violates JEDEC stress limits; sustained use at 6.5 V is not advised. The MC74HC1G14DTT1G is rated for full functionality only within its specified 2.0–6.0 V window.

Does MC74HC1G14DTT1G support 1.8 V logic operation?

No, MC74HC1G14DTT1G does not guarantee functional operation at 1.8 V. Its recommended minimum V_CC is 2.0 V, and electrical characteristics-including VT⁺/VT⁻ thresholds and output drive-are not characterized below that level. For 1.8 V systems, consider SN74LVC1G14DBVR or 74AUP1G14, which are explicitly rated down to 1.65 V and 0.8 V respectively.

What is the purpose of Pin 2 (N/C) on MC74HC1G14DTT1G?

Pin 2 on MC74HC1G14DTT1G is internally not connected (N/C) and serves no electrical function. It must remain unconnected-neither tied to GND nor V_CC. This pin is not a thermal pad or test point; routing traces or soldering to it may cause mechanical stress or unintended coupling. The SC-74A package uses Pin 2 solely for mechanical symmetry and alignment.

How does the Schmitt-trigger hysteresis of MC74HC1G14DTT1G improve noise immunity?

The MC74HC1G14DTT1G provides 1.8 V hysteresis (V_H = VT⁺ − VT⁻) at V_CC = 4.5 V, meaning the input must swing at least 1.8 V between rising and falling thresholds to toggle output state. This prevents oscillation or chatter when driven by slow or noisy signals-such as from mechanical switches or analog sensors-where noise peaks fall within the gap between VT⁺ and VT⁻. The MC74HC1G14DTT1G thus eliminates need for external RC filters in such applications.

Is MC74HC1G14DTT1G pin-compatible with other SC-74A Schmitt inverters?

Yes, MC74HC1G14DTT1G shares the standard SC-74A (SOT-23-5) pinout with industry-standard Schmitt inverters like SN74LVC1G14DBVR and 74AHC1G14GW,125: Pin 1 = GND, Pin 2 = N/C, Pin 3 = A, Pin 4 = V_CC, Pin 5 = Y. However, electrical differences-including V_CC range, hysteresis width, and drive strength-require validation in the target circuit before substitution. The MC74HC1G14DTT1G is not a drop-in replacement without design review.

MC74HC1G14DTT1G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74HC

Package/Case:: SOT-23-5 Thin, TSOT-23-5

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: Inverter

Number of Circuits:: 1

Number of Inputs:: 1

Features:: Schmitt Trigger

Voltage - Supply:: 2V ~ 6V

Current - Quiescent (Max):: 1 µA

Current - Output High, Low:: 2.6mA, 2.6mA

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

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

Max Propagation Delay @ V, Max CL:: 17ns @ 6V, 50pF

Operating Temperature:: -55°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 5-TSOP

MC74HC1G14DTT1G FAQ

1.How can I place an order for MC74HC1G14DTT1G through Aetrix?

Please submit a Request for Quotation (RFQ) for MC74HC1G14DTT1G 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 MC74HC1G14DTT1G reliable?

The price and inventory of MC74HC1G14DTT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74HC1G14DTT1G is usually 5 days.

3.What payment methods are accepted for MC74HC1G14DTT1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74HC1G14DTT1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC74HC1G14DTT1G?

MC74HC1G14DTT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC74HC1G14DTT1G 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 MC74HC1G14DTT1G?

For technical support, including MC74HC1G14DTT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74HC1G14DTT1G requirements.

6.How does Aetrix verify that MC74HC1G14DTT1G is sourced from the original manufacturer or authorized distributors?

All MC74HC1G14DTT1G 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 MC74HC1G14DTT1G meets industry standards.

7.What is the process for return or replacement of MC74HC1G14DTT1G?

All MC74HC1G14DTT1G units undergo pre-shipment inspection (PSI). If there is an issue with MC74HC1G14DTT1G, 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 MC74HC1G14DTT1G part is unused and in its original packaging.

Return procedure for MC74HC1G14DTT1G:

1.Submit a request within 90 days.

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

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