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onsemi MC74VHC1GT125MU1TCG-Q
- Part No.:
- MC74VHC1GT125MU1TCG-Q
- Manufacturer:
- onsemi
- Package:
- 6-UFDFN
- Datasheet:
-
MC74VHC1GT125MU1TCG-Q.pdf
- Description:
- 3-STATE BUFFER
- Quantity:
- Payment:
- Shipping:
Inventory:3,648
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Product details
Overview
MC74VHC1GT125MU1TCG-Q from onsemi is a single non-inverting 3-state buffer with TTL-level input thresholds, 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 typical propagation delay at 5 V, supports ±8 mA drive at 3.0 V, and features over-voltage tolerant inputs/outputs up to 5.5 V - enabling safe interfacing between 5 V and 3 V logic domains in automotive body control modules.
For engineers reviewing the MC74VHC1GT125MU1TCG-Q datasheet, pinout, applications, or equivalent options, key selection criteria include its AEC-Q100 qualification, UDFN6 (1.45 × 1.0 mm) package with exposed thermal pad, TTL-compatible VIH/VIL thresholds, IOFF partial power-down protection, and guaranteed operation from −55 °C to +125 °C.
Technical Context
The MC74VHC1GT125MU1TCG-Q implements a three-stage CMOS architecture with buffered 3-state output, delivering high noise immunity and stable switching. Its input structure tolerates voltages up to 5.5 V independent of VCC, allowing robust 5 V-to-3 V translation without external clamping.
Output stages support tri-state operation with leakage current ≤ ±2.5 µA at 5.5 V and enable/disable timing (tPZL/tPHZ) as low as 4.8 ns (typ) at 5 V with 15 pF load. IOFF functionality ensures <10 µA power-off leakage when VCC = 0 V, critical for hot-swap and battery-backed subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.0 V to 5.5 V - enables direct integration into 3.3 V and 5 V supply rails without level shifters. |
| tPD (Typ) | 3.5 ns at VCC = 5 V, CL = 15 pF - supports >100 MHz bus toggle rates in compact logic interfaces. |
| VIH / VIL | 2.0 V (min) / 0.8 V (max) at VCC = 5.5 V - TTL-compatible thresholds ensure reliable recognition of legacy 5 V logic signals. |
| IOFF Leakage | ≤10 µA at VCC = 0 V - prevents back-powering and signal corruption during partial power-down sequences. |
| Over-Voltage Tolerance | Inputs/outputs withstand −0.5 V to +6.5 V - eliminates need for external protection diodes in mixed-supply interconnects. |
| Operating Temp | −55 °C to +125 °C - meets automotive under-hood and industrial control temperature requirements. |
| Package | UDFN6, 1.45 × 1.0 mm, 0.5 mm pitch - ultra-compact footprint ideal for space-constrained ADAS and infotainment PCBs. |
Pinout & Package
MC74VHC1GT125MU1TCG-Q is housed in a 6-pin UDFN package (Case 517AQ) with wettable flank leads and an exposed thermal pad. Pin 1 is marked by a dot; the package measures 1.45 mm × 1.0 mm × 0.5 mm and is RoHS-compliant, Pb-free, and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OE) | Output Enable | Active-low control: drives Y high-impedance when high; enables non-inverting pass-through when low. |
| 2 (A) | Data Input | TTL-level compatible input accepting 0–5.5 V regardless of VCC; internally clamped. |
| 3 (GND) | Ground Reference | Primary return path for logic and I/O currents; connects to PCB ground plane for noise suppression. |
| 4 (Y) | Buffered Output | Non-inverting, 3-state output capable of sourcing/sinking ±8 mA at 3.0 V with rail-to-rail swing. |
| 5 (NC) | No Connect | Internally unconnected; must be left floating or tied to GND per layout guidelines - no electrical function. |
| 6 (VCC) | Supply Voltage | Power input for core logic and output drivers; decoupling capacitor (100 nF) required within 2 mm. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-level input thresholds | VIH = 2.0 V (min), VIL = 0.8 V (max) at 5.5 V - ensures compatibility with standard 5 V TTL outputs without interface resistors. |
| IOFF partial power-down protection | Leakage <10 µA when VCC = 0 V - prevents unintended current flow and data corruption during system sleep or hot-swap events. |
| Over-voltage tolerant I/O | Withstands −0.5 V to +6.5 V on A/Y pins independent of VCC - eliminates external TVS diodes in 5 V ↔ 3 V domain bridges. |
| AEC-Q100 Grade 1 qualification | Qualified to −40 °C to +125 °C ambient, PPAP-capable - suitable for automotive body electronics, lighting, and gateway modules. |
| Ultra-small UDFN6 footprint | 1.45 × 1.0 mm, 0.5 mm pitch - reduces board area by >40% vs. SC-74A, enabling denser routing in camera and sensor modules. |
Applications
| Automotive Body Control Unit | Industrial PLC I/O Module |
|---|---|
|
Use Scenario: Isolating microcontroller GPIOs from 5 V sensor inputs and 3.3 V CAN transceiver control lines in door module ECUs. IC Role / Device Role / Timing Role: Non-inverting 3-state buffer providing voltage-level translation and bus contention prevention during firmware updates. Use Value: Eliminates discrete level shifters and reduces BOM count by one component while maintaining AEC-Q100 compliance. |
Use Scenario: Enabling/disabling analog input channel selection lines in modular I/O cards with mixed 5 V and 3.3 V logic families. IC Role / Device Role / Timing Role: Tri-state gate controlling multiplexer address latching, synchronized to PLC scan cycle via OE signal. Use Value: Prevents signal contention during hot-swap insertion and ensures deterministic state during power sequencing. |
| Automotive Infotainment Head Unit | Medical Diagnostic Sensor Interface |
|
Use Scenario: Buffering display backlight PWM signals from 3.3 V SoC to 5 V LED driver ICs in head-up display subsystems. IC Role / Device Role / Timing Role: High-speed non-inverting driver with 3.5 ns tPD ensuring accurate PWM duty-cycle preservation. Use Value: Maintains precise dimming resolution across temperature range without added propagation delay skew. |
Use Scenario: Interfacing 5 V analog front-end ADC reference clocks to 3.3 V FPGA timing controllers in portable ultrasound devices. IC Role / Device Role / Timing Role: Low-jitter, rail-to-rail clock buffer isolating noise-sensitive timing paths from digital supply domains. Use Value: Reduces clock edge uncertainty by limiting capacitive loading and enabling clean signal routing on dense flex PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar non-inverting 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G125DBVR | CMOS-level inputs (VIH = 2.0 V min at 3.3 V), not TTL-compatible; identical UDFN6 package and 3.5 ns tPD. | Suitable for 3.3 V-only systems; cannot reliably interpret 5 V TTL logic without external pull-ups or clamping. | Select SN74LVC1G125DBVR only when interfacing native 3.3 V logic; MC74VHC1GT125MU1TCG-Q remains preferred for 5 V legacy signal compatibility. |
| 74AUP1G125GW,125 | Lower ICC (0.9 µA typ), wider VCC range (0.8–3.6 V), but max VIO = 3.6 V - no 5.5 V over-voltage tolerance. | Limited to sub-3.6 V domains; unsuitable for 5 V↔3 V translation or automotive environments requiring 5 V signal handling. | Choose 74AUP1G125GW,125 only for ultra-low-power, single-supply 1.8 V/2.5 V applications where over-voltage protection is unnecessary. |
Compared with SN74LVC1G125DBVR and 74AUP1G125GW,125, the MC74VHC1GT125MU1TCG-Q uniquely combines TTL-level input compatibility, 5.5 V over-voltage tolerance, AEC-Q100 qualification, and UDFN6 packaging - making it the only drop-in solution for automotive 5 V signal buffering in space-constrained designs.
Availability
MC74VHC1GT125MU1TCG-Q is available at Aetrix Electronics and suitable for automotive body control units, industrial PLC I/O modules, and medical diagnostic sensor interfaces requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant performance.
Supply support for MC74VHC1GT125MU1TCG-Q 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 MC74VHC1GT125MU1TCG-Q belongs to onsemi's VHC logic family, engineered specifically for high-reliability, mixed-voltage interface applications in automotive and industrial environments where signal integrity, thermal efficiency, and qualification rigor are mandatory.
FAQ
What is the input voltage threshold behavior of the MC74VHC1GT125MU1TCG-Q?
The MC74VHC1GT125MU1TCG-Q features TTL-level input thresholds: VIH is guaranteed ≥2.0 V and VIL ≤0.8 V at VCC = 5.5 V. This allows reliable recognition of standard 5 V TTL logic levels even when operating from a 3.3 V supply, distinguishing it from CMOS-input variants like the MC74VHC1G125. The MC74VHC1GT125MU1TCG-Q maintains these thresholds across its full −55 °C to +125 °C operating range.
Does the MC74VHC1GT125MU1TCG-Q support partial power-down operation?
Yes, the MC74VHC1GT125MU1TCG-Q includes IOFF circuitry that limits power-off leakage current to ≤10 µA when VCC = 0 V and any input or output is biased to 5.5 V. This feature prevents back-driving and signal corruption during hot-swap or low-power sleep modes, a critical capability confirmed in the device's DC Electrical Characteristics table for MC74VHC1GT125.
What is the maximum operating frequency supported by the MC74VHC1GT125MU1TCG-Q?
The MC74VHC1GT125MU1TCG-Q does not specify a maximum clock frequency directly, but its 3.5 ns typical propagation delay (tPD) at 5 V with 15 pF load supports reliable operation at bus toggle rates exceeding 100 MHz. AC Electrical Characteristics confirm tPLH/tPHL ≤8.5 ns (max) across −55 °C to +125 °C, enabling use in high-speed control signaling where deterministic timing is required.
Is the MC74VHC1GT125MU1TCG-Q pin-compatible with other UDFN6 logic buffers?
No - the MC74VHC1GT125MU1TCG-Q uses a unique UDFN6 pinout (OE-A-GND-Y-NC-VCC) that differs from industry-standard assignments such as SN74LVC1G125 (A-OE-GND-Y-VCC-NC). While both are 6-pin UDFN packages, the NC and VCC positions differ, making them non-pin-compatible. Layout redesign is required when substituting between these families.
What package variant does MC74VHC1GT125MU1TCG-Q use, and what are its thermal characteristics?
The MC74VHC1GT125MU1TCG-Q uses the UDFN6 package (Case 517AQ), measuring 1.45 mm × 1.0 mm × 0.5 mm with 0.5 mm pitch. Its thermal resistance (θJA) is 154 °C/W on a standard FR4 board per JESD51-7, and maximum power dissipation in still air is 812 mW - enabled by the exposed thermal pad, which must be soldered to a dedicated PCB thermal plane for optimal performance.
MC74VHC1GT125MU1TCG-Q Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74VHC
- Package/Case:
- 6-UFDFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-UDFN (1.45x1)
MC74VHC1GT125MU1TCG-Q FAQ
1.How can I place an order for MC74VHC1GT125MU1TCG-Q through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74VHC1GT125MU1TCG-Q 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 MC74VHC1GT125MU1TCG-Q reliable?
The price and inventory of MC74VHC1GT125MU1TCG-Q are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74VHC1GT125MU1TCG-Q is usually 5 days.
3.What payment methods are accepted for MC74VHC1GT125MU1TCG-Q?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74VHC1GT125MU1TCG-Q transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74VHC1GT125MU1TCG-Q?
MC74VHC1GT125MU1TCG-Q orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74VHC1GT125MU1TCG-Q 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 MC74VHC1GT125MU1TCG-Q?
For technical support, including MC74VHC1GT125MU1TCG-Q datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74VHC1GT125MU1TCG-Q requirements.
6.How does Aetrix verify that MC74VHC1GT125MU1TCG-Q is sourced from the original manufacturer or authorized distributors?
All MC74VHC1GT125MU1TCG-Q 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 MC74VHC1GT125MU1TCG-Q meets industry standards.
7.What is the process for return or replacement of MC74VHC1GT125MU1TCG-Q?
All MC74VHC1GT125MU1TCG-Q units undergo pre-shipment inspection (PSI). If there is an issue with MC74VHC1GT125MU1TCG-Q, 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 MC74VHC1GT125MU1TCG-Q part is unused and in its original packaging.
Return procedure for MC74VHC1GT125MU1TCG-Q:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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