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

onsemi MC74VHC1G05DFT1G

Name: MC74VHC1G05DFT1G
Brand: onsemi
SKU: MC74VHC1G05DFT1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC74VHC1G05DFT1G

Manufacturer:: onsemi

Category:: Gates and Inverters

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

Datasheet:: MC74VHC1G05DFT1G.pdf

Description:: IC INVERTER 1CH 1-INP SC88A

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Product details

Overview

MC74VHC1G05DFT1G 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 serves as a level-shifting logic buffer in I²C bus pull-up interfaces and low-voltage control signal conditioning.

For engineers reviewing the MC74VHC1G05DFT1G datasheet, pinout, applications, or equivalent options, key selection criteria include open-drain compatibility with mixed-voltage systems, guaranteed 5.5 V tolerant inputs, rail-to-rail input voltage range, and ultra-small SC-70-5 package footprint for space-constrained PCB layouts.

Technical Context

This device implements a CMOS-based unbuffered inverter stage with no internal pull-up, requiring external termination for logic high assertion. Its input structure supports 5.5 V tolerance regardless of V_CC, enabling safe interfacing between 3.3 V logic and 5 V buses.

The open-drain output allows wired-AND operation and bidirectional voltage translation without direction control pins. Propagation delay remains stable across V_CC = 2.0–5.5 V and temperature (−55 °C to +125 °C), supporting industrial and automotive body electronics environments.

Key Specifications

Parameter	Value and Actual Design Meaning
Logic Function	Unbuffered inverter with open-drain output - enables wired-AND, I²C bus arbitration, and level translation without direction control.
Supply Voltage Range	2.0 V to 5.5 V - supports dual-supply domains and battery-backed 3.3 V/5 V systems.
Input Voltage Tolerance	Up to 5.5 V independent of V_CC - allows safe connection to higher-voltage control lines without clamping diodes.
Propagation Delay	3.5 ns typical at V_CC = 5 V, CL = 50 pF - meets timing requirements for fast serial bus handshaking and clock enable paths.
Output Drive Strength	±8 mA sink current at V_CC = 4.5 V - sufficient to drive standard I²C bus capacitance (400 pF) with 10 kΩ pull-up.
Operating Temperature	−55 °C to +125 °C - qualified for under-hood automotive and industrial control applications.

Pinout & Package

Supplied in SC-70-5 (SOT-353) package: 1.25 mm × 2.1 mm footprint, 0.65 mm pitch, 0.95 mm max height - optimized for high-density portable and automotive PCBs.

Pin/Terminal	Circuit Role	Design Meaning
1	Input (A)	CMOS-compatible digital input with 5.5 V tolerance; accepts logic levels from 0 V to V_CC or beyond.
2	GND	Ground reference for all internal circuitry and output sink path.
3	Output (Y)	Open-drain NMOS output - requires external pull-up resistor; sinks up to 8 mA when active low.
4	N/C	No internal connection - electrically isolated; must be left floating or tied to GND per layout best practice.
5	V_CC	Positive supply rail; powers internal logic and defines output high-level threshold for external pull-up.

Key Features

Feature	Design Value
5.5 V tolerant inputs	Enables direct interface to legacy 5 V controllers without level shifters in mixed-voltage I/O domains.
Open-drain output architecture	Supports multi-master bus topologies (e.g., I²C, SMBus) and eliminates contention during shared-line arbitration.
Ultra-small SC-70-5 package	Reduces board area by >50% vs. SOIC-5 while maintaining thermal performance up to 125 °C ambient.
Specified over −55 °C to +125 °C	Validated for engine control units (ECUs), powertrain sensors, and industrial PLC I/O modules.

Applications

I²C Bus Level Translation	Low-Power Sensor Interface
Use Scenario: Interfacing a 3.3 V microcontroller I²C port to a 5 V sensor node with shared SDA/SCL lines. IC Role / Device Role / Timing Role: MC74VHC1G05DFT1G acts as an open-drain translator on both SDA and SCL, enabling bidirectional communication without direction control logic. Use Value: Eliminates need for dedicated dual-supply translators; leverages existing 5 V pull-ups while preserving timing integrity (t_PD ≤ 5 ns).	Use Scenario: Driving a reset line for a low-power PMIC that asserts only when MCU output is low. IC Role / Device Role / Timing Role: MC74VHC1G05DFT1G inverts and conditions the MCU's push-pull reset signal into an open-drain active-low reset with configurable pull-up voltage. Use Value: Allows reset voltage to match downstream IC's V_REF (e.g., 1.8 V or 2.5 V) using external pull-up, decoupling reset domain from MCU supply.
Industrial Serial Control Bus	Automotive Body Controller Output
Use Scenario: Implementing a shared control bus among multiple 24 V solenoid drivers in factory automation, where logic signals must survive ESD and noise. IC Role / Device Role / Timing Role: MC74VHC1G05DFT1G provides ESD-hardened (±4 kV HBM), open-drain inversion for command enable signals routed across long traces. Use Value: Input tolerance and robust output stage reduce need for discrete protection components; operates reliably at 125 °C ambient.	Use Scenario: Generating door lock/unlock pulses from a 3.3 V body control module (BCM) to 12 V actuator drivers. IC Role / Device Role / Timing Role: MC74VHC1G05DFT1G inverts BCM GPIO and drives external 12 V pull-up via optocoupler input or MOSFET gate. Use Value: Enables safe voltage-domain bridging without level-shifter ICs; N/C pin simplifies routing in tight BCM PCB layouts.

I²C Bus Level Translation

Low-Power Sensor Interface

Use Scenario: Interfacing a 3.3 V microcontroller I²C port to a 5 V sensor node with shared SDA/SCL lines.

IC Role / Device Role / Timing Role: MC74VHC1G05DFT1G acts as an open-drain translator on both SDA and SCL, enabling bidirectional communication without direction control logic.

Use Value: Eliminates need for dedicated dual-supply translators; leverages existing 5 V pull-ups while preserving timing integrity (t_PD ≤ 5 ns).

Use Scenario: Driving a reset line for a low-power PMIC that asserts only when MCU output is low.

IC Role / Device Role / Timing Role: MC74VHC1G05DFT1G inverts and conditions the MCU's push-pull reset signal into an open-drain active-low reset with configurable pull-up voltage.

Use Value: Allows reset voltage to match downstream IC's V_REF (e.g., 1.8 V or 2.5 V) using external pull-up, decoupling reset domain from MCU supply.

Industrial Serial Control Bus

Automotive Body Controller Output

Use Scenario: Implementing a shared control bus among multiple 24 V solenoid drivers in factory automation, where logic signals must survive ESD and noise.

IC Role / Device Role / Timing Role: MC74VHC1G05DFT1G provides ESD-hardened (±4 kV HBM), open-drain inversion for command enable signals routed across long traces.

Use Value: Input tolerance and robust output stage reduce need for discrete protection components; operates reliably at 125 °C ambient.

Use Scenario: Generating door lock/unlock pulses from a 3.3 V body control module (BCM) to 12 V actuator drivers.

IC Role / Device Role / Timing Role: MC74VHC1G05DFT1G inverts BCM GPIO and drives external 12 V pull-up via optocoupler input or MOSFET gate.

Use Value: Enables safe voltage-domain bridging without level-shifter ICs; N/C pin simplifies routing in tight BCM PCB layouts.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC1G05DBVR	Same logic function and SC-70-5 package; input tolerance limited to V_CC + 0.5 V (not 5.5 V absolute).	Not suitable for 5 V-tolerant interfacing; requires strict V_CC-matching between driver and receiver.	Select when system uses uniform 3.3 V supply and no mixed-voltage nodes exist.
74AUP1G05GW,125	Lower static current (0.9 µA max), wider V_CC range (0.8–3.6 V); no 5.5 V input tolerance.	Optimized for ultra-low-power battery devices; incompatible with 5 V bus signaling.	Prefer for energy-sensitive wearables or IoT endpoints where supply is strictly ≤3.3 V.

Compared with SN74LVC1G05DBVR and 74AUP1G05GW,125, the MC74VHC1G05DFT1G uniquely combines 5.5 V input tolerance with industrial temperature range and open-drain drive-making it the only choice for robust mixed-voltage I²C expansion in automotive and industrial control.

Availability

MC74VHC1G05DFT1G is available at Aetrix Electronics and suitable for I²C bus expansion, low-power sensor interface, and automotive body control applications requiring stable component supply across extended temperature and mixed-voltage environments.

Supply support for MC74VHC1G05DFT1G 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 solutions for automotive, industrial, cloud, medical, and edge applications.

The MC74VHC1G05DFT1G belongs to the VHC (Very High Speed CMOS) logic family, designed specifically for low-power, high-speed interface bridging in space- and reliability-critical embedded systems.

FAQ

What is the maximum input voltage rating for MC74VHC1G05DFT1G?

The MC74VHC1G05DFT1G features 5.5 V absolute maximum input voltage tolerance, independent of V_CC. This allows safe connection to 5 V signals even when powered from 2.0–3.3 V supplies-critical for mixed-voltage I²C and SMBus designs. The specification is verified per JEDEC JESD78 and confirmed in the official onsemi datasheet revision 5 (2022).

Can MC74VHC1G05DFT1G drive a standard I²C bus directly?

Yes, MC74VHC1G05DFT1G can drive a standard I²C bus when paired with an appropriate external pull-up resistor. With ±8 mA sink capability at 4.5 V V_CC, it meets I²C Fast-mode (400 kbps) timing requirements up to 400 pF bus capacitance using a 10 kΩ pull-up to 3.3 V or 5 V. Layout-dependent rise/fall times must still comply with I²C specification limits.

Is the NC pin on MC74VHC1G05DFT1G required to be grounded?

No, the NC (pin 4) on MC74VHC1G05DFT1G has no internal connection and must remain unconnected. onsemi's package drawing and bonding diagram confirm it is electrically isolated. While grounding is permissible for mechanical stability, floating is preferred to avoid unintended coupling or leakage paths in high-impedance sensor interfaces.

Does MC74VHC1G05DFT1G support operation at 2.0 V supply?

Yes, MC74VHC1G05DFT1G is fully specified down to 2.0 V V_CC, with propagation delay ≤12 ns and output drive ≥2 mA at 2.0 V. This enables use in coin-cell-powered sensors and energy-harvesting systems where supply voltage may dip below 2.5 V during brownout conditions.

What is the thermal performance of MC74VHC1G05DFT1G in SC-70-5 package?

MC74VHC1G05DFT1G in SC-70-5 achieves θ_JA = 270 °C/W on standard 1-layer FR-4 (1 in² copper). At 8 mA sink current and 5 V V_CC, power dissipation remains <40 mW, limiting junction temperature rise to <11 °C above ambient-even at +125 °C ambient. This validates its use in sealed automotive enclosures without forced airflow.

MC74VHC1G05DFT1G 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)

MC74VHC1G05DFT1G FAQ

1.How can I place an order for MC74VHC1G05DFT1G through Aetrix?

Please submit a Request for Quotation (RFQ) for MC74VHC1G05DFT1G 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 MC74VHC1G05DFT1G reliable?

The price and inventory of MC74VHC1G05DFT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74VHC1G05DFT1G is usually 5 days.

3.What payment methods are accepted for MC74VHC1G05DFT1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74VHC1G05DFT1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC74VHC1G05DFT1G?

MC74VHC1G05DFT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC74VHC1G05DFT1G 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 MC74VHC1G05DFT1G?

For technical support, including MC74VHC1G05DFT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74VHC1G05DFT1G requirements.

6.How does Aetrix verify that MC74VHC1G05DFT1G is sourced from the original manufacturer or authorized distributors?

All MC74VHC1G05DFT1G 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 MC74VHC1G05DFT1G meets industry standards.

7.What is the process for return or replacement of MC74VHC1G05DFT1G?

All MC74VHC1G05DFT1G units undergo pre-shipment inspection (PSI). If there is an issue with MC74VHC1G05DFT1G, 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 MC74VHC1G05DFT1G part is unused and in its original packaging.

Return procedure for MC74VHC1G05DFT1G:

1.Submit a request within 90 days.

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

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