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

onsemi MC74VHC1G05DFT2G

Name: MC74VHC1G05DFT2G
Brand: onsemi
SKU: MC74VHC1G05DFT2G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC74VHC1G05DFT2G

Manufacturer:: onsemi

Category:: Gates and Inverters

Package:: 5-TSSOP, SC-70-5, SOT-353

Datasheet:: MC74VHC1G05DFT2G.pdf

Description:: IC INVERTER 1CH 1-INP SC88A

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Product details

Overview

MC74VHC1G05DFT2G from onsemi is a single unbuffered inverter with open-drain output, operating from 2.0 V to 5.5 V supply, featuring 3.5 ns typical propagation delay at 5 V and ±8 mA output drive capability. It is used in level-shifting, wired-OR logic, and I²C bus interface applications.

For engineers reviewing the MC74VHC1G05DFT2G datasheet, pinout, applications, or equivalent options, key selection factors include open-drain topology, rail-to-rail input compatibility, low-power VHC logic family performance, and SC-70-5 package constraints for space-constrained digital signal conditioning.

Technical Context

This device implements a single CMOS inverter stage with no internal pull-up, requiring external termination for high-level assertion. Its input threshold is compatible with both TTL and CMOS logic families across the full 2.0–5.5 V V_CC range.

The open-drain output supports bidirectional communication on shared buses and enables voltage-level translation between domains-e.g., 3.3 V logic driving a 5 V bus with appropriate pull-up. No internal clamping diodes are present, limiting ESD robustness to ±2 kV HBM.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2.0 V to 5.5 V - supports mixed-voltage system interfacing without level translators
t_PD (5 V)	3.5 ns typical - enables use in sub-100 MHz digital control paths
I_OH/I_OL	±8 mA - sufficient to drive standard 50 Ω transmission lines or multiple 74LVC inputs
Input Threshold	V_IH = 0.7×V_CC, V_IL = 0.3×V_CC - ensures reliable switching with TTL- and CMOS-compatible sources
Quiescent Current	2 µA max at 5 V - suitable for always-on wake-up or monitoring circuits
ESD Rating	±2 kV HBM - requires external protection in harsh industrial environments

Pinout & Package

MC74VHC1G05DFT2G is housed in a 5-pin SC-70 (SOT-353) package, measuring 2.0 mm × 1.25 mm × 0.95 mm, with 0.65 mm lead pitch and moisture sensitivity level (MSL) 1.

Pin/Terminal	Circuit Role	Design Meaning
1	Input (A)	CMOS-compatible digital input; accepts 0–V_CC swing with hysteresis-free threshold
2	GND	Ground reference for logic and output stages; must be low-impedance for noise immunity
3	Output (Y)	Open-drain NMOS output; requires external pull-up to define high state
4	N/C	No internal connection; left floating or tied to GND per layout best practice
5	V_CC	Positive supply rail; bypassing with 100 nF ceramic capacitor near pin is mandatory

Key Features

Feature	Design Value
Unbuffered Inverter Topology	Minimizes propagation delay and power consumption versus buffered equivalents
Open-Drain Output	Enables wired-AND/wired-OR bus architectures and multi-master I²C compatibility
Rail-to-Rail Input Voltage Range	Accepts logic signals from 0 V to V_CC without damage or undefined states
VHC Logic Family Performance	Delivers CMOS speed with TTL input compatibility and low static current
SC-70-5 Small Outline Package	Reduces PCB area by >50% vs. SOIC-5 while maintaining thermal performance up to 75°C ambient

Applications

I²C Bus Level Translation	GPIO Expansion Interface
Use Scenario: Interfacing a 3.3 V microcontroller GPIO to a 5 V I²C sensor bus. IC Role / Device Role / Timing Role: Open-drain inverter acts as bidirectional level shifter with active-low inversion for ACK/NACK signaling. Use Value: Eliminates need for dedicated level translator ICs while preserving I²C timing compliance and bus arbitration.	Use Scenario: Adding programmable open-drain outputs to an FPGA I/O bank with limited native drive strength. IC Role / Device Role / Timing Role: Inverter provides isolated, rail-flexible output buffering with configurable polarity via software-controlled input. Use Value: Enables direct connection to 1.8 V, 3.3 V, or 5 V peripheral buses without additional voltage domain isolation.
Wired-OR Power Sequencing Control	Reset Signal Conditioning
Use Scenario: Combining multiple system fault signals into a single global shutdown line using passive pull-up. IC Role / Device Role / Timing Role: Inverter converts active-high fault flags to active-low reset assertions, enabling OR logic via shared drain node. Use Value: Reduces component count versus discrete transistor solutions and improves timing predictability over RC-based combiners.	Use Scenario: Debouncing and inverting a mechanical pushbutton reset input before feeding to a microcontroller's active-low reset pin. IC Role / Device Role / Timing Role: Provides clean, fast edge transition and eliminates contact bounce through Schmitt-trigger-free CMOS input stage. Use Value: Ensures reliable reset assertion without external RC filtering or firmware debouncing overhead.

I²C Bus Level Translation

GPIO Expansion Interface

Use Scenario: Interfacing a 3.3 V microcontroller GPIO to a 5 V I²C sensor bus.

IC Role / Device Role / Timing Role: Open-drain inverter acts as bidirectional level shifter with active-low inversion for ACK/NACK signaling.

Use Value: Eliminates need for dedicated level translator ICs while preserving I²C timing compliance and bus arbitration.

Use Scenario: Adding programmable open-drain outputs to an FPGA I/O bank with limited native drive strength.

IC Role / Device Role / Timing Role: Inverter provides isolated, rail-flexible output buffering with configurable polarity via software-controlled input.

Use Value: Enables direct connection to 1.8 V, 3.3 V, or 5 V peripheral buses without additional voltage domain isolation.

Wired-OR Power Sequencing Control

Reset Signal Conditioning

Use Scenario: Combining multiple system fault signals into a single global shutdown line using passive pull-up.

IC Role / Device Role / Timing Role: Inverter converts active-high fault flags to active-low reset assertions, enabling OR logic via shared drain node.

Use Value: Reduces component count versus discrete transistor solutions and improves timing predictability over RC-based combiners.

Use Scenario: Debouncing and inverting a mechanical pushbutton reset input before feeding to a microcontroller's active-low reset pin.

IC Role / Device Role / Timing Role: Provides clean, fast edge transition and eliminates contact bounce through Schmitt-trigger-free CMOS input stage.

Use Value: Ensures reliable reset assertion without external RC filtering or firmware debouncing overhead.

Equivalent & Alternatives

The following parts are listed as comparable options for similar inverter-with-open-drain applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC1G05DBVR	Lower V_CC min (1.65 V), higher I_OL (32 mA), same SC-70-5 footprint	Better suited for 1.8 V systems and heavier capacitive loads	Select when interfacing with sub-2 V logic or driving >20 pF bus capacitance
74AUP1G05GW,125	Ultra-low power (0.9 µA I_DD), slower t_PD (10.5 ns), same pinout	Optimized for battery-powered always-on monitoring nodes	Select when quiescent current <1 µA is critical and speed ≤20 MHz suffices

Compared with MC74VHC1G05DFT2G, SN74LVC1G05DBVR offers wider voltage flexibility and stronger drive but less noise margin below 2 V, while 74AUP1G05GW,125 trades speed for extreme low-power operation-making each optimal for distinct trade-off priorities in voltage, speed, and standby current.

Availability

MC74VHC1G05DFT2G is available at Aetrix Electronics and suitable for I²C bus design, GPIO expansion, and power sequencing applications requiring stable component supply and long-term industrial availability.

Supply support for MC74VHC1G05DFT2G 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, intelligent power and sensing technologies for automotive, industrial, cloud, medical, and IoT applications.

MC74VHC1G05DFT2G belongs to the VHC (Very High Speed CMOS) logic family, designed for low-power, high-speed digital interfacing in space-constrained embedded systems where signal integrity and voltage flexibility are critical.

FAQ

What is the maximum recommended operating frequency for MC74VHC1G05DFT2G?

The MC74VHC1G05DFT2G does not specify a maximum clock frequency in its datasheet because it is a combinational logic device-not a clocked element. Its usable toggle rate depends on propagation delay and load capacitance; with 50 pF load and 5 V supply, it supports clean transitions up to approximately 100 MHz. For precise timing analysis, designers must calculate worst-case t_PLH/t_PHL plus board trace delays when using MC74VHC1G05DFT2G in high-speed paths.

Can MC74VHC1G05DFT2G drive an LED directly?

No, MC74VHC1G05DFT2G cannot drive an LED directly from its open-drain output without an external current-limiting resistor and pull-up supply. The output only sinks current (up to 8 mA); it cannot source. To illuminate an LED, connect the anode to V_CC (or another supply), cathode to the MC74VHC1G05DFT2G output pin, and add a series resistor sized for desired brightness and safe current-ensuring total sink current stays within the 8 mA absolute maximum rating of MC74VHC1G05DFT2G.

Is MC74VHC1G05DFT2G compatible with 1.8 V logic inputs?

No, MC74VHC1G05DFT2G is not guaranteed to recognize 1.8 V as a valid high-level input when operated at V_CC ≥ 3.0 V, because its V_IH threshold is 0.7×V_CC (e.g., 2.1 V at 3 V). At V_CC = 2.0 V, V_IH = 1.4 V, so 1.8 V inputs would be accepted-but only if V_CC is set to 2.0–2.2 V. For reliable 1.8 V interface, consider SN74LVC1G05DBVR instead of MC74VHC1G05DFT2G.

Does MC74VHC1G05DFT2G include built-in ESD protection diodes?

MC74VHC1G05DFT2G does not integrate input or output ESD protection diodes to V_CC or GND. Its rated ESD immunity is ±2 kV HBM, achieved solely through internal gate oxide robustness and junction design. External TVS diodes or series resistors are recommended in environments exceeding IEC 61000-4-2 Level 2 (4 kV contact), especially when MC74VHC1G05DFT2G interfaces with connectors or long traces exposed to handling.

What is the thermal resistance (θ_JA) of MC74VHC1G05DFT2G in SC-70-5 package?

The junction-to-ambient thermal resistance (θ_JA) of MC74VHC1G05DFT2G in the SC-70-5 package is 300 °C/W under standard JEDEC JESD51-2 conditions (single-layer 1 oz copper, 1 in² pad). This value assumes minimal PCB copper area; adding thermal vias and extended copper pours can reduce θ_JA to ~120–180 °C/W in production layouts. Maximum junction temperature remains 150 °C, so power dissipation must stay below 16.7 mW at 75 °C ambient when using MC74VHC1G05DFT2G in continuous operation.

MC74VHC1G05DFT2G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74VHC

Package/Case:: 5-TSSOP, SC-70-5, SOT-353

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: Inverter

Number of Circuits:: 1

Number of Inputs:: 1

Features:: Open Drain

Voltage - Supply:: 2V ~ 5.5V

Current - Quiescent (Max):: 1 µA

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

Input Logic Level - Low:: 0.5V ~ 1.65V

Input Logic Level - High:: 1.5V ~ 3.85V

Max Propagation Delay @ V, Max CL:: 7.5ns @ 5V, 50pF

Operating Temperature:: -55°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SC-88A (SC-70-5/SOT-353)

MC74VHC1G05DFT2G FAQ

1.How can I place an order for MC74VHC1G05DFT2G through Aetrix?

Please submit a Request for Quotation (RFQ) for MC74VHC1G05DFT2G 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 MC74VHC1G05DFT2G reliable?

The price and inventory of MC74VHC1G05DFT2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74VHC1G05DFT2G is usually 5 days.

3.What payment methods are accepted for MC74VHC1G05DFT2G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74VHC1G05DFT2G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC74VHC1G05DFT2G?

MC74VHC1G05DFT2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC74VHC1G05DFT2G 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 MC74VHC1G05DFT2G?

For technical support, including MC74VHC1G05DFT2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74VHC1G05DFT2G requirements.

6.How does Aetrix verify that MC74VHC1G05DFT2G is sourced from the original manufacturer or authorized distributors?

All MC74VHC1G05DFT2G 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 MC74VHC1G05DFT2G meets industry standards.

7.What is the process for return or replacement of MC74VHC1G05DFT2G?

All MC74VHC1G05DFT2G units undergo pre-shipment inspection (PSI). If there is an issue with MC74VHC1G05DFT2G, 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 MC74VHC1G05DFT2G part is unused and in its original packaging.

Return procedure for MC74VHC1G05DFT2G:

1.Submit a request within 90 days.

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

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