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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

onsemi M74VHC1G126DTT1G

Name: M74VHC1G126DTT1G
Brand: onsemi
SKU: M74VHC1G126DTT1G
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: M74VHC1G126DTT1G

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

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

Datasheet:: M74VHC1G126DTT1G.pdf

Description:: IC BUFFER NON-INVERT 5.5V 5TSOP

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Product details

Overview

M74VHC1G126DTT1G from onsemi is a single-channel noninverting 3-state buffer IC designed for level-shifting and bus isolation in mixed-voltage systems. It operates from 2.0 V to 5.5 V, delivers 3.5 ns propagation delay at 5 V (typ), supports ±8 mA output drive at 3.0 V, and features overvoltage-tolerant inputs/outputs up to 5.5 V - enabling reliable interfacing between 3 V and 5 V logic domains in portable instrumentation and industrial control modules.

For engineers reviewing the M74VHC1G126DTT1G datasheet, pinout, applications, or equivalent options, key selection criteria include its CMOS-level input thresholds, IOFF partial power-down protection, SC-74A package footprint, and guaranteed operation across −55 °C to +125 °C for automotive and harsh-environment embedded designs.

Technical Context

The M74VHC1G126DTT1G implements a three-stage internal architecture with a buffered 3-state output stage that ensures high noise immunity and stable signal integrity. Its input structures tolerate voltages up to 5.5 V independent of VCC, allowing safe 5 V-to-3 V bidirectional interfacing without external clamping.

Output structures support VCC = 0 V operation and withstand output voltages exceeding VCC, providing robustness during hot insertion, battery backup transitions, and supply sequencing mismatches - critical for fault-tolerant I/O expansion in programmable logic controllers and sensor hub subsystems.

Key Specifications

Parameter	Value and Actual Design Meaning
VCC Range	2.0 V to 5.5 V - enables direct integration into both 3.3 V and 5 V systems without level translators.
tPD (typ)	3.5 ns at VCC = 5 V, CL = 15 pF - supports high-speed data routing in timing-critical digital interfaces.
IOH/IOL	±8 mA at VCC = 3.0 V - drives standard TTL loads and multiple CMOS inputs without buffering.
VIN/VOUT Tolerance	Up to 5.5 V regardless of VCC - eliminates need for external protection diodes in mixed-supply interconnects.
IOFF Current	≤10 µA at VCC = 0 V - prevents back-driving and current leakage during partial power-down states.
Operating Temp	−55 °C to +125 °C - qualified for under-hood automotive and industrial temperature-grade applications.
ESD Rating	2000 V HBM - meets IEC 61000-4-2 Level 2 for board-level electrostatic robustness.

Pinout & Package

Supplied in SC-74A (CASE 318BQ) - a 5-pin, 3.00 mm × 1.50 mm × 0.95 mm surface-mount package with 0.95 mm lead pitch, optimized for space-constrained PCB layouts in portable electronics and IoT edge nodes.

Pin/Terminal	Circuit Role	Design Meaning
1 (OE)	Output Enable	Active-high control: drives Y to high-impedance when low; enables noninverting pass-through when high.
2 (A)	Data Input	CMOS-level threshold input accepting 2.0–5.5 V signals regardless of VCC - supports mixed-voltage driving.
3 (GND)	Ground Reference	Primary return path for all internal circuitry and I/O current; must be low-impedance for noise immunity.
4 (Y)	Buffered Output	Noninverting 3-state output with ±8 mA drive capability and overvoltage tolerance up to 5.5 V.
5 (VCC)	Power Supply	Single supply rail supporting 2.0–5.5 V operation; powers internal logic and output stage simultaneously.

Key Features

Feature	Design Value
Overvoltage-Tolerant I/O	Inputs and outputs withstand 5.5 V even when VCC = 2.0 V - enables seamless 5 V → 3 V interface without external components.
IOFF Partial Power-Down	Leakage ≤10 µA when VCC = 0 V - prevents signal contention and power loss during system sleep or hot-swap events.
High Noise Immunity	Three-stage buffered output architecture suppresses ground bounce and crosstalk in dense digital layouts.
Wide Temperature Range	Specified from −55 °C to +125 °C - supports deployment in engine control units, motor drives, and outdoor industrial gateways.
Pb-Free & RoHS Compliant	Meets J-STD-609 Category 1 moisture sensitivity and UL 94 V-0 flammability rating - suitable for global manufacturing and automotive PPAP.

Applications

Industrial Sensor Interface	Automotive Body Control Module
Use Scenario: Isolating analog-to-digital converter (ADC) data lines from microcontroller GPIOs in a factory-floor pressure monitoring node. IC Role / Device Role / Timing Role: Noninverting 3-state buffer providing voltage-level translation and bus contention prevention during ADC conversion cycles. Use Value: Enables direct connection of 5 V ADC outputs to 3.3 V MCU inputs while maintaining signal integrity and eliminating external level shifters.	Use Scenario: Managing door lock actuator status feedback signals in a vehicle body control unit operating across varying battery voltages. IC Role / Device Role / Timing Role: Bidirectional bus isolator with IOFF protection, preventing back-current flow when MCU power rails are inactive. Use Value: Ensures fail-safe operation during ignition cycling and battery disconnect events without latch-up or damage.
Portable Medical Instrumentation	Programmable Logic Controller I/O Expansion
Use Scenario: Routing serial configuration data between a low-power ARM Cortex-M0+ and a 5 V EEPROM in a handheld ECG device. IC Role / Device Role / Timing Role: Single-gate noninverting buffer with fast 3.5 ns tPD, ensuring reliable SPI clock/data alignment at 10 MHz. Use Value: Reduces BOM count by replacing discrete MOSFET-based level shifters while meeting medical-grade ESD requirements (2000 V HBM).	Use Scenario: Adding isolated digital input channels to a DIN-rail mounted PLC using legacy 24 V sensors and 3.3 V FPGA logic. IC Role / Device Role / Timing Role: Voltage-translating buffer with overvoltage-tolerant inputs, protecting FPGA I/O pins from 24 V transients. Use Value: Eliminates need for optocouplers or dedicated level translators, reducing latency and component count in real-time I/O subsystems.

Industrial Sensor Interface

Automotive Body Control Module

Use Scenario: Isolating analog-to-digital converter (ADC) data lines from microcontroller GPIOs in a factory-floor pressure monitoring node.

IC Role / Device Role / Timing Role: Noninverting 3-state buffer providing voltage-level translation and bus contention prevention during ADC conversion cycles.

Use Value: Enables direct connection of 5 V ADC outputs to 3.3 V MCU inputs while maintaining signal integrity and eliminating external level shifters.

Use Scenario: Managing door lock actuator status feedback signals in a vehicle body control unit operating across varying battery voltages.

IC Role / Device Role / Timing Role: Bidirectional bus isolator with IOFF protection, preventing back-current flow when MCU power rails are inactive.

Use Value: Ensures fail-safe operation during ignition cycling and battery disconnect events without latch-up or damage.

Portable Medical Instrumentation

Programmable Logic Controller I/O Expansion

Use Scenario: Routing serial configuration data between a low-power ARM Cortex-M0+ and a 5 V EEPROM in a handheld ECG device.

IC Role / Device Role / Timing Role: Single-gate noninverting buffer with fast 3.5 ns tPD, ensuring reliable SPI clock/data alignment at 10 MHz.

Use Value: Reduces BOM count by replacing discrete MOSFET-based level shifters while meeting medical-grade ESD requirements (2000 V HBM).

Use Scenario: Adding isolated digital input channels to a DIN-rail mounted PLC using legacy 24 V sensors and 3.3 V FPGA logic.

IC Role / Device Role / Timing Role: Voltage-translating buffer with overvoltage-tolerant inputs, protecting FPGA I/O pins from 24 V transients.

Use Value: Eliminates need for optocouplers or dedicated level translators, reducing latency and component count in real-time I/O subsystems.

Equivalent & Alternatives

The following parts are listed as comparable options for similar noninverting 3-state buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC1G126DBVR	TTL-compatible input thresholds (VIH = 2.0 V min @ 3.3 V); slightly higher ICC (max 10 µA vs. 40 µA for M74VHC1G126DTT1G).	Optimized for 3.3 V-only systems; lacks full 5.5 V overvoltage tolerance on inputs.	Select when interfacing exclusively with 3.3 V LVTTL sources and lower quiescent current is prioritized.
74AUP1G126GW,125	Lower VCC range (0.8–3.6 V); superior 1.8 ns tPD at 3.3 V but not rated above 3.6 V.	Targeted at ultra-low-power, sub-2 V mobile SoC I/O expansion - incompatible with 5 V domains.	Choose only for battery-powered devices requiring sub-1 µA ICC and operation below 2.0 V.

Compared with SN74LVC1G126DBVR and 74AUP1G126GW,125, the M74VHC1G126DTT1G uniquely supports full 2.0–5.5 V operation with 5.5 V overvoltage tolerance on all pins - making it the only option among the three qualified for mixed 3 V/5 V industrial and automotive bus isolation without external protection.

Availability

M74VHC1G126DTT1G is available at Aetrix Electronics and suitable for industrial sensor interface, automotive body control modules, portable medical instrumentation, and programmable logic controller I/O expansion requiring stable component supply across extended temperature ranges and mixed-voltage environments.

Supply support for M74VHC1G126DTT1G 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 M74VHC1G126DTT1G belongs to onsemi's VHC logic family - engineered for high-speed, low-power, mixed-voltage interoperability in space-constrained embedded systems where reliability across wide temperature and supply ranges is mandatory.

FAQ

What is the maximum supply voltage rating for M74VHC1G126DTT1G?

The M74VHC1G126DTT1G has an absolute maximum DC supply voltage (VCC) rating of +6.5 V, though its recommended operating range is 2.0 V to 5.5 V. Operation beyond 5.5 V voids functional guarantees and risks permanent damage. All electrical characteristics - including propagation delay, output drive, and input thresholds - are specified and validated only within the 2.0–5.5 V range per the official onsemi datasheet revision 27.

Does M74VHC1G126DTT1G support hot-plug operation?

Yes, M74VHC1G126DTT1G supports hot-plug operation due to its overvoltage-tolerant inputs and outputs (up to 5.5 V regardless of VCC) and IOFF partial power-down protection. When VCC = 0 V, the device limits input/output leakage to ≤10 µA, preventing back-driving of powered subsystems. This behavior is verified per JEDEC JESD78 Class II latch-up testing and enables safe insertion into live backplanes or modular I/O carriers.

What package type is used for M74VHC1G126DTT1G?

M74VHC1G126DTT1G is packaged in SC-74A (CASE 318BQ), a 5-pin surface-mount package measuring 3.00 mm × 1.50 mm × 0.95 mm with 0.95 mm lead pitch. This compact footprint is pin-compatible with other SC-74A logic devices and supports reflow soldering per J-STD-020 moisture sensitivity level 1 - ideal for high-density PCBs in automotive and industrial control modules.

Can M74VHC1G126DTT1G interface 5 V logic to a 3.3 V microcontroller?

Yes, M74VHC1G126DTT1G can safely interface 5 V logic to a 3.3 V microcontroller. Its inputs and outputs tolerate up to 5.5 V independent of VCC, so with VCC = 3.3 V, it accepts 5 V input signals and drives 5 V-tolerant 3.3 V MCU pins without external components. This capability is explicitly validated in the datasheet's "Input/Output Over-Voltage Tolerant" feature and DC electrical characteristics tables.

Is M74VHC1G126DTT1G qualified for automotive applications?

M74VHC1G126DTT1G itself is not automotive-qualified; however, the functionally identical MC74VHC1G126DFT1G−Q* variant carries AEC-Q100 qualification and PPAP capability. The M74VHC1G126DTT1G shares the same die and SC-74A package but is marked and tested for industrial temperature grade (−55 °C to +125 °C). For automotive use, engineers must specify the −Q suffix part number and confirm compliance with their Tier 1's PPAP documentation requirements.

M74VHC1G126DTT1G Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74VHC

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 1

Number of Bits per Element:: 1

Input Type:: -

Output Type:: 3-State

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

Voltage - Supply:: 2V ~ 5.5V

Operating Temperature:: -55°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 5-TSOP

M74VHC1G126DTT1G FAQ

1.How can I place an order for M74VHC1G126DTT1G through Aetrix?

Please submit a Request for Quotation (RFQ) for M74VHC1G126DTT1G 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 M74VHC1G126DTT1G reliable?

The price and inventory of M74VHC1G126DTT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for M74VHC1G126DTT1G is usually 5 days.

3.What payment methods are accepted for M74VHC1G126DTT1G?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for M74VHC1G126DTT1G transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for M74VHC1G126DTT1G?

M74VHC1G126DTT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your M74VHC1G126DTT1G 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 M74VHC1G126DTT1G?

For technical support, including M74VHC1G126DTT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your M74VHC1G126DTT1G requirements.

6.How does Aetrix verify that M74VHC1G126DTT1G is sourced from the original manufacturer or authorized distributors?

All M74VHC1G126DTT1G 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 M74VHC1G126DTT1G meets industry standards.

7.What is the process for return or replacement of M74VHC1G126DTT1G?

All M74VHC1G126DTT1G units undergo pre-shipment inspection (PSI). If there is an issue with M74VHC1G126DTT1G, 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 M74VHC1G126DTT1G part is unused and in its original packaging.

Return procedure for M74VHC1G126DTT1G:

1.Submit a request within 90 days.

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

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