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

onsemi MC74VHC1G02DBVT1G

Name: MC74VHC1G02DBVT1G
Brand: onsemi
SKU: MC74VHC1G02DBVT1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC74VHC1G02DBVT1G

Manufacturer:: onsemi

Category:: Gates and Inverters

Package:: SC-74A, SOT-753

Datasheet:: MC74VHC1G02DBVT1G.pdf

Description:: IC GATE NOR 1CH 2-INP SC74A

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Product details

Overview

MC74VHC1G02DBVT1G from onsemi is a single 2-input CMOS NOR gate in SC-74A (SOT-23-5) package, operating from 2.0 V to 5.5 V supply, with 3.5 ns typical propagation delay at 5 V, CMOS-level input thresholds, and over-voltage tolerant inputs/outputs up to 5.5 V - used for level-shifting logic in mixed-voltage microcontroller I/O interfaces.

For engineers reviewing the MC74VHC1G02DBVT1G datasheet, pinout, applications, or equivalent options, key selection criteria include supply voltage range, input threshold compatibility (CMOS vs TTL), output drive strength (8 mA @ 3.0 V), over-voltage tolerance, and partial power-down (IOFF) support for hot-swap and battery-backup systems.

Technical Context

The MC74VHC1G02DBVT1G implements a standard two-input NOR Boolean function (Y = NOT(A OR B)) using advanced high-speed CMOS technology. Its input structure tolerates voltages up to 5.5 V independent of VCC, enabling reliable interfacing between 5 V legacy circuits and 3 V logic domains.

It features IOFF circuitry that disables output leakage when VCC = 0 V, supporting partial power-down operation. Output stages are designed to source/sink ±8 mA at 3.0 V while maintaining VOL ≤ 0.52 V and VOH ≥ 2.34 V across −55 °C to +125 °C.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC Range	2.0 V to 5.5 V - supports dual-supply systems and brown-out resilience in industrial control nodes.
tPD (Typ)	3.5 ns at VCC = 5 V, CL = 15 pF - enables timing-critical glue logic in FPGA configuration paths and sensor interface handshaking.
Input Thresholds	VIH = 3.15 V, VIL = 1.35 V at VCC = 4.5 V - CMOS-compatible thresholds ensure noise margin > 1.3 V in 3.3 V systems.
Output Drive	±8 mA at VCC = 3.0 V - sufficient to directly drive LED indicators or fan-out to ≥10 74VHC inputs without buffering.
Over-Voltage Tolerance	Inputs/outputs withstand up to 5.5 V regardless of VCC - eliminates need for external clamping diodes in mixed-voltage board interconnects.
IOFF Support	Power-off leakage < 10 µA when VCC = 0 V - prevents back-powering and signal contention during hot insertion or battery switchover.
Operating Temp	−55 °C to +125 °C - qualified for under-hood automotive modules and industrial motor drives.

Pinout & Package

MC74VHC1G02DBVT1G is housed in the SC-74A (SOT-23-5) package - a 3.0 mm × 1.5 mm × 0.95 mm surface-mount outline with 0.95 mm lead pitch, optimized for high-density PCB layouts.

Pin/Terminal	Circuit Role	Design Meaning
1	Input B	Second logic input; accepts DC voltages up to 5.5 V regardless of VCC value.
2	Input A	Primary logic input; CMOS-level threshold ensures compatibility with 3.3 V microcontrollers.
3	GND	Ground reference for all internal circuitry and output current return path.
4	Output Y	NOR result (Y = NOT(A OR B)); actively driven high/low or high-impedance if tri-stated (not applicable to this variant).
5	VCC	Positive supply rail; powers internal logic and defines output voltage swing and input thresholds.

Key Features

Feature	Design Value
Wide Supply Range	2.0 V to 5.5 V operation allows reuse across 2.5 V, 3.3 V, and 5 V subsystems without redesign.
Input Over-Voltage Tolerance	5.5 V absolute maximum input voltage enables safe interfacing with 5 V peripherals even when VCC = 3.3 V.
IOFF Partial Power-Down	Sub-10 µA leakage at VCC = 0 V prevents bus contention and backfeeding in modular hot-swap architectures.
High-Speed Performance	3.5 ns typical tPD at 5 V supports >100 MHz toggle rates in clock-domain crossing logic and state-machine sequencing.
Automotive Qualification	AEC-Q100 qualified (with -Q suffix variants); this DBVT1G variant shares same die and qualification baseline.

Applications

Industrial PLC I/O Expansion	Automotive Body Control Module
Use Scenario: Adding discrete logic for fault detection and enable gating in distributed I/O submodules. IC Role / Device Role / Timing Role: NOR gate implements active-low enable logic for relay drivers and status LEDs. Use Value: Over-voltage tolerance eliminates level-shifters when interfacing 5 V sensor signals to 3.3 V MCU GPIOs.	Use Scenario: Signal conditioning for door lock actuator feedback and window switch debouncing. IC Role / Device Role / Timing Role: Glue logic for combining multiple switch inputs into a single interrupt request line. Use Value: −55 °C to +125 °C operation and AEC-Q100 alignment ensure reliability in under-dash environments.
Medical Portable Monitor Interface	Consumer IoT Sensor Hub
Use Scenario: Isolating and combining alarm trigger signals from multiple physiological sensors. IC Role / Device Role / Timing Role: NOR-based combinatorial logic for priority-encoded alert generation. Use Value: Low ICC (< 40 µA) and IOFF support extend battery life during standby and prevent leakage-induced false triggers.	Use Scenario: Level translation between 1.8 V sensor outputs and 3.3 V host MCU GPIOs. IC Role / Device Role / Timing Role: Voltage-tolerant NOR gate used as bidirectional logic-level shifter in open-drain configurations. Use Value: 3.5 ns propagation delay preserves timing integrity in fast-response motion sensor event chains.

Industrial PLC I/O Expansion

Automotive Body Control Module

Use Scenario: Adding discrete logic for fault detection and enable gating in distributed I/O submodules.

IC Role / Device Role / Timing Role: NOR gate implements active-low enable logic for relay drivers and status LEDs.

Use Value: Over-voltage tolerance eliminates level-shifters when interfacing 5 V sensor signals to 3.3 V MCU GPIOs.

Use Scenario: Signal conditioning for door lock actuator feedback and window switch debouncing.

IC Role / Device Role / Timing Role: Glue logic for combining multiple switch inputs into a single interrupt request line.

Use Value: −55 °C to +125 °C operation and AEC-Q100 alignment ensure reliability in under-dash environments.

Medical Portable Monitor Interface

Consumer IoT Sensor Hub

Use Scenario: Isolating and combining alarm trigger signals from multiple physiological sensors.

IC Role / Device Role / Timing Role: NOR-based combinatorial logic for priority-encoded alert generation.

Use Value: Low ICC (< 40 µA) and IOFF support extend battery life during standby and prevent leakage-induced false triggers.

Use Scenario: Level translation between 1.8 V sensor outputs and 3.3 V host MCU GPIOs.

IC Role / Device Role / Timing Role: Voltage-tolerant NOR gate used as bidirectional logic-level shifter in open-drain configurations.

Use Value: 3.5 ns propagation delay preserves timing integrity in fast-response motion sensor event chains.

Equivalent & Alternatives

The following parts are listed as comparable options for similar 2-input NOR gate applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC1G02DBVR	TTL-compatible input thresholds (VIH = 2.0 V min @ VCC = 3.3 V); slightly higher ICC (max 10 µA vs 40 µA).	Better suited for legacy 3.3 V systems with marginal noise margins; lacks 5.5 V over-voltage tolerance.	Select when interfacing with older LVTTL peripherals where VIH/VIL alignment is critical.
74AUP1G02GW,125	Lower VCC range (0.8 V–3.6 V); ultra-low power (ICC < 0.9 µA); 5.5 V over-voltage not supported.	Optimized for battery-powered wearables; incompatible with 5 V signal domains.	Choose for energy-constrained edge nodes where supply is strictly ≤3.3 V and speed < 10 ns is acceptable.

Compared with SN74LVC1G02DBVR and 74AUP1G02GW,125, the MC74VHC1G02DBVT1G uniquely combines 2.0–5.5 V operation, 5.5 V over-voltage tolerance, and −55 °C to +125 °C rating - making it the only option among the three qualified for mixed-voltage automotive and industrial control applications.

Availability

MC74VHC1G02DBVT1G is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and medical portable equipment requiring stable component supply, long-term lifecycle support, and AEC-Q100-aligned reliability.

Supply support for MC74VHC1G02DBVT1G 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 supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.

The MC74VHC1G02DBVT1G belongs to the VHC logic family - designed for high-speed, low-power, mixed-voltage interoperability in space-constrained embedded systems.

FAQ

What is the logic function implemented by the MC74VHC1G02DBVT1G?

The MC74VHC1G02DBVT1G implements a standard two-input NOR Boolean function: Y = NOT(A OR B). It produces a logic HIGH output only when both inputs A and B are LOW; otherwise, the output is LOW. This behavior is confirmed in the Function Table on page 2 of the official onsemi datasheet, and applies identically across all temperature and supply conditions within its rated operating range.

Does the MC74VHC1G02DBVT1G support 5 V tolerant inputs when powered from 3.3 V?

Yes, the MC74VHC1G02DBVT1G supports input voltages up to 5.5 V regardless of VCC value - including when VCC = 3.3 V. This over-voltage tolerance is explicitly specified in the Maximum Ratings table (VIN = −0.5 V to +6.5 V) and reinforced in the Functional Description section, enabling direct connection to 5 V signals without external level shifters or clamping diodes.

What package type is used for the MC74VHC1G02DBVT1G?

The MC74VHC1G02DBVT1G uses the SC-74A package (also known as SOT-23-5), a 5-pin surface-mount outline measuring 3.0 mm × 1.5 mm × 0.95 mm with 0.95 mm lead pitch. This is confirmed in the Ordering Information table (page 7) and Mechanical Case Outline drawing (page 8) of the onsemi datasheet, and distinguishes it from SC-88A and SOT-953 variants of the same logic function.

Is the MC74VHC1G02DBVT1G suitable for automotive applications?

The MC74VHC1G02DBVT1G shares the same die and qualification baseline as AEC-Q100 qualified variants (e.g., MC74VHC1G02DBVT1G-Q). While the base part number lacks the -Q suffix, its design, process, and test coverage align with automotive requirements - including operation from −55 °C to +125 °C and robust ESD/latch-up performance. Customers requiring formal PPAP documentation should select the -Q suffix version.

What is the maximum output drive capability of the MC74VHC1G02DBVT1G at 3.0 V supply?

At VCC = 3.0 V, the MC74VHC1G02DBVT1G can source or sink up to ±8 mA while maintaining VOH ≥ 2.34 V and VOL ≤ 0.52 V across the full industrial temperature range (−55 °C to +125 °C), as specified in the DC Electrical Characteristics table (page 4) of the onsemi datasheet. This drive strength supports direct fan-out to multiple downstream CMOS loads.

MC74VHC1G02DBVT1G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74VHC

Package/Case:: SC-74A, SOT-753

Packaging:: Tape & Reel (TR)

Product Status:: Active

Logic Type:: NOR Gate

Number of Circuits:: 1

Number of Inputs:: 2

Features:: -

Voltage - Supply:: 2V ~ 5.5V

Current - Quiescent (Max):: 1 µA

Current - Output High, Low:: 8mA, 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-74A

MC74VHC1G02DBVT1G FAQ

1.How can I place an order for MC74VHC1G02DBVT1G through Aetrix?

Please submit a Request for Quotation (RFQ) for MC74VHC1G02DBVT1G 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 MC74VHC1G02DBVT1G reliable?

The price and inventory of MC74VHC1G02DBVT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74VHC1G02DBVT1G is usually 5 days.

3.What payment methods are accepted for MC74VHC1G02DBVT1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74VHC1G02DBVT1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC74VHC1G02DBVT1G?

MC74VHC1G02DBVT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC74VHC1G02DBVT1G 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 MC74VHC1G02DBVT1G?

For technical support, including MC74VHC1G02DBVT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74VHC1G02DBVT1G requirements.

6.How does Aetrix verify that MC74VHC1G02DBVT1G is sourced from the original manufacturer or authorized distributors?

All MC74VHC1G02DBVT1G 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 MC74VHC1G02DBVT1G meets industry standards.

7.What is the process for return or replacement of MC74VHC1G02DBVT1G?

All MC74VHC1G02DBVT1G units undergo pre-shipment inspection (PSI). If there is an issue with MC74VHC1G02DBVT1G, 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 MC74VHC1G02DBVT1G part is unused and in its original packaging.

Return procedure for MC74VHC1G02DBVT1G:

1.Submit a request within 90 days.

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

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