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onsemi MC74VHC1GT50DFT2G
- Part No.:
- MC74VHC1GT50DFT2G
- Manufacturer:
- onsemi
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MC74VHC1GT50DFT2G.pdf
- Description:
- IC BUFFER NON-INVERT 5.5V SC88A
- Quantity:
- Payment:
- Shipping:
Inventory:2,998
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Product details
Overview
MC74VHC1GT50DFT2G from onsemi is a single-channel TTL-input CMOS buffer in SC-88A (SOT-353) package, operating from 2.0 V to 5.5 V, with 3.5 ns typical propagation delay at 5 V, ±8 mA output drive at 3.0 V, and input overvoltage tolerance up to 5.5 V. It enables level-shifting between 3 V and 5 V logic domains in portable instrumentation interfaces.
For engineers reviewing the MC74VHC1GT50DFT2G datasheet, pinout, applications, or equivalent options, key selection criteria include TTL-compatible input thresholds (VIH = 1.4 V min at 3 V), IOFF partial power-down support, and SC-88A footprint compatibility with space-constrained PCB layouts.
Technical Context
This device implements a non-inverting buffer with TTL-level input switching thresholds-VIH = 1.4 V min and VIL = 0.45 V max at VCC = 3.0 V-distinct from the CMOS-threshold MC74VHC1G50 variant. Its input structure tolerates up to 5.5 V regardless of supply voltage, enabling safe interfacing of 5 V signals into 3 V systems.
The SC-88A package supports IOFF functionality, allowing outputs to enter high-impedance state when VCC = 0 V, preventing back-driving during hot insertion or partial power-down. Propagation delay remains stable across −55 °C to +125 °C operating range, with tPLH/tPHL ≤ 8.0 ns (max) at 5.5 V and CL = 50 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.0 V to 5.5 V - supports dual-supply mixed-voltage system integration without external level shifters |
| tPD (Typ) | 3.5 ns at VCC = 5 V, CL = 15 pF - enables high-speed signal buffering in clock distribution and data path applications |
| VIH / VIL | 1.4 V / 0.45 V min/max at VCC = 3.0 V - ensures reliable recognition of standard TTL logic levels |
| IOUT | ±8 mA at VCC = 3.0 V - drives multiple 74LVC inputs or small capacitive loads without external buffers |
| Input Overvoltage | Tolerant to 5.5 V independent of VCC - eliminates need for external clamping diodes when interfacing 5 V peripherals |
| IOFF Support | Active when VCC = 0 V - prevents current leakage and bus contention during power sequencing or standby modes |
| Operating Temp | −55 °C to +125 °C - qualified for industrial and automotive under-hood environments |
Pinout & Package
MC74VHC1GT50DFT2G uses the SC-88A (SOT-353) 5-pin surface-mount package (Case 419A), measuring 2.0 mm × 1.25 mm × 0.95 mm with 0.65 mm pitch. Pin 1 is marked with a dot or bevelled edge per JEDEC MO-178.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | NC | No internal connection - must be left floating or grounded; not usable as input/output |
| 2 | A | True-buffer input - accepts TTL-level signals; VIH/VIL defined per VCC |
| 3 | GND | Ground reference - connects to system ground plane; decoupling capacitor recommended near pin |
| 4 | Y | Inverted-output buffer output - provides rail-to-rail CMOS output swing with ±8 mA drive capability |
| 5 | VCC | Positive supply - requires local 100 nF ceramic decoupling to GND; supports 2.0–5.5 V operation |
Key Features
| Feature | Design Value |
|---|---|
| TTL-input threshold compatibility | Enables direct interface with legacy 74LS/74F logic without pull-up resistors or translators |
| 5.5 V input overvoltage tolerance | Allows safe connection of 5 V signals to 3 V-powered systems without external protection components |
| IOFF partial power-down mode | Prevents back-current flow when VCC is off, supporting hot-swap and multi-rail power sequencing |
| SC-88A ultra-small footprint | Reduces board area by >50% vs. SOIC-5 while maintaining full electrical performance |
| Pb-Free, RoHS-compliant packaging | Meets global environmental regulations and reflow soldering standards (JEDEC J-STD-020, MSL Level 1) |
Applications
| Industrial Sensor Interface | Portable Medical Device Logic |
|---|---|
Use Scenario: Interfacing 5 V analog sensor output stages to 3 V microcontroller ADC trigger lines in factory-floor condition monitoring units. IC Role / Device Role / Timing Role: Signal-level translation and noise-immune buffering of digital enable pulses between mismatched voltage domains. Use Value: Eliminates discrete resistor-divider networks and reduces BOM count while maintaining <10 ns timing margin for synchronous sampling. | Use Scenario: Isolating button press detection logic from low-power sleep/wake control circuitry in battery-operated ECG monitors. IC Role / Device Role / Timing Role: Debounced input conditioning and voltage-domain bridging for mechanical switch inputs feeding 3 V ARM Cortex-M0+ GPIOs. Use Value: Enables zero-current IOFF state during deep-sleep mode, extending battery life by eliminating parasitic leakage paths. |
| Automotive Body Control Module | Test Equipment Signal Conditioning |
Use Scenario: Driving LED status indicators from 3 V CAN transceiver interrupt outputs in 12 V vehicle subsystems. IC Role / Device Role / Timing Role: Voltage-level adaptation and current gain stage for open-drain interrupt signals driving 5 V LED anodes. Use Value: Provides 8 mA sink capability at 3 V supply, ensuring full brightness without additional transistor stages. | Use Scenario: Buffering FPGA I/O bank signals to legacy 5 V test fixtures during production functional testing. IC Role / Device Role / Timing Role: Bidirectional voltage translation and timing-critical signal integrity preservation on high-fanout test harnesses. Use Value: Maintains sub-10 ns propagation skew across all channels, critical for synchronized stimulus-response validation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G125DBVR | 3-state output (not true buffer); CMOS input thresholds; 3.3 V only rated | Lacks IOFF and 5.5 V overvoltage tolerance; requires external pull-ups for open-drain emulation | Select when tri-state control is required and system operates strictly at 3.3 V |
| 74AUP1G07GW,125 | CMOS input thresholds; lower ICC (0.9 μA typ); 0.8–3.6 V VCC range | Not TTL-compatible; unsuitable for interfacing 5 V legacy logic without external biasing | Select for ultra-low-power 1.8–3.3 V systems where TTL input compatibility is unnecessary |
Compared with SN74LVC1G125DBVR and 74AUP1G07GW,125, the MC74VHC1GT50DFT2G uniquely combines TTL input compatibility, 5.5 V overvoltage tolerance, and IOFF support in a single SC-88A package-making it the only choice for robust 3 V/5 V boundary interfacing in industrial and automotive contexts.
Availability
MC74VHC1GT50DFT2G is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable medical device logic, automotive body control modules, and test equipment signal conditioning requiring stable component supply across extended temperature ranges.
Supply support for MC74VHC1GT50DFT2G 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 MC74VHC1GT50DFT2G belongs to the VHC1G logic family, designed specifically for space-constrained, mixed-voltage digital interface applications requiring robust level translation and low static power consumption.
FAQ
What is the input voltage threshold behavior of the MC74VHC1GT50DFT2G?
The MC74VHC1GT50DFT2G features TTL-compatible input thresholds: VIH ≥ 1.4 V and VIL ≤ 0.45 V at VCC = 3.0 V, distinguishing it from the CMOS-threshold MC74VHC1G50. This allows direct connection to 74LS and other TTL-family outputs without pull-up resistors. Thresholds scale predictably with VCC, maintaining compatibility across its 2.0–5.5 V operating range.
Does the MC74VHC1GT50DFT2G support partial power-down operation?
Yes, the MC74VHC1GT50DFT2G supports IOFF functionality: when VCC = 0 V, both input and output structures enter high-impedance states, preventing back-current flow and bus contention. This is confirmed in the datasheet's DC Electrical Characteristics table under IOFF parameter (≤10 μA max), making it suitable for hot-swap and multi-rail power sequencing designs.
What is the maximum propagation delay specification for MC74VHC1GT50DFT2G at 3.3 V?
At VCC = 3.3 V and CL = 50 pF, the MC74VHC1GT50DFT2G has a maximum propagation delay (tPLH/tPHL) of 10.0 ns over the full −55 °C to +125 °C temperature range. The typical value is 7.1 ns. This is specified in the AC Electrical Characteristics table and applies identically to both MC74VHC1G50 and MC74VHC1GT50 variants.
Can the MC74VHC1GT50DFT2G safely interface a 5 V microcontroller GPIO to a 3 V FPGA I/O bank?
Yes, the MC74VHC1GT50DFT2G can safely perform this interface: its inputs tolerate up to 5.5 V regardless of VCC, so a 5 V GPIO drives pin 2 (A) directly while VCC = 3.3 V powers the device. The output (pin 4, Y) then delivers a clean 3.3 V CMOS signal compatible with the FPGA's 3 V I/O bank, with no external components required.
Which package variant does MC74VHC1GT50DFT2G use, and what are its key mechanical dimensions?
The MC74VHC1GT50DFT2G uses the SC-88A (SOT-353) package (Case 419A), with dimensions 2.0 mm × 1.25 mm × 0.95 mm and 0.65 mm lead pitch. Pin 1 is identified by a bevelled edge or dot marking. This package is MSL Level 1 rated and compatible with standard reflow profiles per JEDEC J-STD-020.
MC74VHC1GT50DFT2G 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:
- Buffer, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- CMOS
- Current - Output High, Low:
- 8mA, 8mA
- Voltage - Supply:
- 1.65V ~ 5.5V
- Operating Temperature:
- -55°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-88A (SC-70-5/SOT-353)
MC74VHC1GT50DFT2G FAQ
1.How can I place an order for MC74VHC1GT50DFT2G through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74VHC1GT50DFT2G 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 MC74VHC1GT50DFT2G reliable?
The price and inventory of MC74VHC1GT50DFT2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74VHC1GT50DFT2G is usually 5 days.
3.What payment methods are accepted for MC74VHC1GT50DFT2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74VHC1GT50DFT2G transactions.
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4.How is shipping managed for MC74VHC1GT50DFT2G?
MC74VHC1GT50DFT2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74VHC1GT50DFT2G 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 MC74VHC1GT50DFT2G?
For technical support, including MC74VHC1GT50DFT2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74VHC1GT50DFT2G requirements.
6.How does Aetrix verify that MC74VHC1GT50DFT2G is sourced from the original manufacturer or authorized distributors?
All MC74VHC1GT50DFT2G 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 MC74VHC1GT50DFT2G meets industry standards.
7.What is the process for return or replacement of MC74VHC1GT50DFT2G?
All MC74VHC1GT50DFT2G units undergo pre-shipment inspection (PSI). If there is an issue with MC74VHC1GT50DFT2G, 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 MC74VHC1GT50DFT2G part is unused and in its original packaging.
Return procedure for MC74VHC1GT50DFT2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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