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onsemi MC74VHC1GT32P5T5G
- Part No.:
- MC74VHC1GT32P5T5G
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- SOT-953
- Datasheet:
-
MC74VHC1GT32P5T5G.pdf
- Description:
- IC GATE OR 1CH 2-INP SOT953
- Quantity:
- Payment:
- Shipping:
Inventory:4,375
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Product details
Overview
MC74VHC1GT32P5T5G from onsemi is a single 2-input OR gate in SOT-953 package, designed for 2.0 V to 5.5 V operation with TTL-level input thresholds. It delivers 3.7 ns typical propagation delay at 5 V, supports 8 mA output drive at 3.0 V, and features over-voltage tolerant inputs/outputs up to 5.5 V-enabling robust 3 V/5 V mixed-supply interfacing in portable power management circuits.
For engineers reviewing the MC74VHC1GT32P5T5G datasheet, pinout, applications, or equivalent options, key selection considerations include its TTL-compatible VIH/VIL thresholds, IOFF partial power-down protection, SC-70-5 footprint compatibility, and AEC-Q100 qualification for automotive signal conditioning.
Technical Context
The MC74VHC1GT32P5T5G implements a standard positive-logic OR function (Y = A + B) using advanced VHC CMOS technology with TTL-level input switching thresholds-VIH = 1.4 V min at 3.0 V VCC, VIL = 0.45 V max-ensuring reliable interface with legacy 5 V TTL outputs while operating from 3.3 V supplies. Its input structure tolerates up to 5.5 V regardless of VCC, enabling safe level translation without external resistors.
IOFF circuitry actively disables output leakage when VCC = 0 V, preventing back-powering of powered-down rails during hot insertion or battery backup scenarios. The device's low 3.7 ns tPD (5 V, CL = 15 pF) and 8 mA drive capability support high-speed logic control in compact space-constrained applications such as sensor interface modules and MCU peripheral enable logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.0 V to 5.5 V - supports dual-supply systems and brown-out tolerant operation across industrial and automotive voltage rails. |
| tPD (Typ) | 3.7 ns at 5 V, CL = 15 pF - enables sub-10 ns timing margins in 50 MHz+ clocked control paths. |
| VIH / VIL | 1.4 V / 0.45 V at 3.0 V VCC - TTL-compatible thresholds ensure direct connection to 5 V logic outputs without level shifters. |
| IOUT (Sink/Source) | ±8 mA at 3.0 V - sufficient to drive multiple 74-series inputs or small LED indicators directly. |
| Input/Output Voltage Tolerance | Up to 5.5 V independent of VCC - eliminates need for clamping diodes when interfacing 5 V sensors to 3.3 V microcontrollers. |
| IOFF Protection | Active at VCC = 0 V - prevents current backflow into unpowered domains during partial system shutdown. |
| Operating Temperature | −55 °C to +125 °C - qualified for under-hood automotive and industrial ambient environments. |
Pinout & Package
SOT-953 (SC-70-5) package: 1.00 mm × 0.80 mm × 0.37 mm, 0.35 mm pitch, 5-pin surface-mount with exposed pad option (not electrically connected in this variant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | A | First OR input - accepts TTL-level signals; over-voltage tolerant to 5.5 V. |
| 2 | GND | Ground reference - must be connected to system ground plane for stable logic thresholds and ESD protection. |
| 3 | B | Second OR input - identical electrical characteristics to Pin 1; supports wired-OR expansion. |
| 4 | Y | OR output - push-pull CMOS structure with 8 mA drive; IOFF active when VCC = 0 V. |
| 5 | VCC | Positive supply - decoupling capacitor (100 nF) recommended within 2 mm of this pin for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-level input thresholds | Ensures interoperability with legacy 5 V TTL outputs while operating from 3.3 V supplies-no level-shifter required. |
| Over-voltage tolerant I/O | Withstands 5.5 V on any pin regardless of VCC, enabling safe 3 V/5 V domain bridging in mixed-voltage systems. |
| IOFF partial power-down protection | Blocks output leakage current when VCC = 0 V, preventing unintended power injection into powered-down subsystems. |
| Low propagation delay | 3.7 ns typical at 5 V allows integration into high-speed control loops with tight timing budgets. |
| AEC-Q100 qualified | Validated for automotive applications including body electronics and infotainment power sequencing. |
Applications
| Automotive Body Control Module | Industrial Sensor Interface |
|---|---|
Use Scenario: OR-ing enable signals from door lock actuator, window motor, and mirror adjuster to trigger shared power rail sequencing. IC Role / Device Role / Timing Role: Single-gate logic combiner providing fail-safe power-up coordination with sub-10 ns response. Use Value: Eliminates discrete diode-OR network, reducing BOM count and PCB area while maintaining TTL-compatible input thresholds for legacy actuator drivers. | Use Scenario: Combining fault flags from temperature, humidity, and pressure sensors before feeding to MCU interrupt pin. IC Role / Device Role / Timing Role: Fast-responding logic aggregator ensuring immediate system-level fault detection with minimal latency. Use Value: 3.7 ns tPD guarantees fault reporting within one MCU instruction cycle at 50 MHz, improving real-time diagnostics reliability. |
| Portable Medical Device Power Sequencing | Consumer IoT Peripheral Enable Logic |
Use Scenario: Enabling display backlight and audio amplifier only when both battery voltage and system ready signals are asserted. IC Role / Device Role / Timing Role: Dual-input OR gate used in inverted logic configuration (via external inverter) to generate active-low enable. Use Value: Over-voltage tolerant I/O allows direct connection to 5 V battery monitor IC while operating from 3.3 V LDO-no external components needed. | Use Scenario: Controlling USB-C port power delivery negotiation logic based on host presence and accessory detection signals. IC Role / Device Role / Timing Role: Signal combiner for multi-source enable conditions in ultra-compact wearable form factors. Use Value: SOT-953 footprint (1.0 × 0.8 mm) saves >60% board area versus SOIC-8 alternatives, critical for sub-20 mm² PCB designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 2-input OR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G32DBVR | CMOS-level VIH/VIL (1.7 V/0.7 V at 3.3 V), slightly higher ICC (10 µA vs 1 µA typ), same SOT-23-5 footprint. | Optimized for 3.3 V-only systems; lacks 5.5 V over-voltage tolerance on inputs. | Select when interfacing exclusively with 3.3 V CMOS sources and board space permits SOT-23-5. |
| 74AUP1G32GW,125 | Ultra-low power (0.9 µA ICC), slower tPD (6.3 ns at 3.3 V), same SC-70-5 package, but rated only to 125 °C (not −55 °C). | Targeted at battery-powered consumer devices where quiescent current dominates over speed. | Prefer for energy-sensitive wearables; avoid in automotive or extended-temperature industrial use. |
Compared with SN74LVC1G32DBVR and 74AUP1G32GW,125, the MC74VHC1GT32P5T5G uniquely combines TTL-level input compatibility, 5.5 V over-voltage tolerance, −55 °C to +125 °C operation, and SOT-953 miniaturization-making it the only choice for ruggedized 3 V/5 V mixed-signal interfacing in constrained automotive or industrial layouts.
Availability
MC74VHC1GT32P5T5G is available at Aetrix Electronics and suitable for automotive body control modules, industrial sensor interfaces, portable medical device power sequencing, and consumer IoT peripheral enable logic requiring stable component supply across extended temperature ranges.
Supply support for MC74VHC1GT32P5T5G 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 silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The MC74VHC1GT32P5T5G belongs to the VHC logic family, engineered for high-speed, low-power, mixed-voltage interfacing in space-constrained and thermally demanding environments.
FAQ
What is the input voltage threshold behavior of the MC74VHC1GT32P5T5G compared to the MC74VHC1G32 series?
The MC74VHC1GT32P5T5G uses TTL-level input thresholds (VIH = 1.4 V, VIL = 0.45 V at 3.0 V VCC), whereas the MC74VHC1G32 variants use CMOS-level thresholds (VIH = 2.1 V, VIL = 0.9 V at 3.0 V). This makes the MC74VHC1GT32P5T5G compatible with standard 5 V TTL outputs when powered from 3.3 V supplies-critical for legacy system upgrades. The MC74VHC1GT32P5T5G maintains identical output drive, propagation delay, and over-voltage tolerance specifications.
Does the MC74VHC1GT32P5T5G support partial power-down operation, and how is it implemented?
Yes, the MC74VHC1GT32P5T5G implements IOFF partial power-down protection. When VCC = 0 V, internal circuitry disables the output stage to prevent current flow from powered inputs or outputs into the unpowered VCC rail. This feature is confirmed in the datasheet's DC Electrical Characteristics table under "IOFF Power Off Leakage Current" (max 10 µA), and protects against back-powering in hot-insertion or battery-backup scenarios without requiring external isolation components.
What is the maximum capacitive load the MC74VHC1GT32P5T5G can drive while maintaining specified propagation delay?
The MC74VHC1GT32P5T5G is characterized for CL = 15 pF and CL = 50 pF loads in its AC Electrical Characteristics table. At 5.5 V VCC and CL = 50 pF, tPLH/tPHL is specified at 10.0 ns max. Driving loads beyond 50 pF will increase propagation delay nonlinearly and may degrade noise margins; for >50 pF applications, buffer staging or layout optimization (short traces, ground planes) is recommended. The device's COUT is 6.0 pF, confirming suitability for typical PCB trace + input capacitance loads.
Is the MC74VHC1GT32P5T5G pin-compatible with other SOT-953 logic gates, and what are the pin assignments?
Yes, the MC74VHC1GT32P5T5G follows the standard SOT-953 pinout for single-gate logic: Pin 1 = A, Pin 2 = GND, Pin 3 = B, Pin 4 = Y, Pin 5 = VCC. This matches industry-standard placement for 5-pin SC-70 logic devices (e.g., SN74LVC1G32DBVR), enabling drop-in replacement in existing footprints-provided the application requires TTL-level inputs. Always verify VIH/VIL compatibility, as CMOS-input variants use different thresholds.
What packaging and marking information is associated with the MC74VHC1GT32P5T5G orderable part?
The MC74VHC1GT32P5T5G is supplied in SOT-953 (Case 527AE) packaging, tape-and-reel format (8,000 units per reel), with Pb-free and RoHS-compliant construction. Marking consists of a single alphanumeric code "Q" on the top surface, followed by date code (e.g., "Q2442" = week 42, 2024). The "P5" suffix denotes SOT-953, and "T5G" indicates tape-and-reel packaging with green (halogen-free) molding compound.
MC74VHC1GT32P5T5G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74VHC
- Package/Case:
- SOT-953
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- OR Gate
- Number of Circuits:
- 1
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 2V ~ 5.5V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 8mA, 8mA
- Input Logic Level - Low:
- 0.28V ~ 0.8V
- Input Logic Level - High:
- 1V ~ 2V
- 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:
- SOT-953
MC74VHC1GT32P5T5G FAQ
1.How can I place an order for MC74VHC1GT32P5T5G through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74VHC1GT32P5T5G 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 MC74VHC1GT32P5T5G reliable?
The price and inventory of MC74VHC1GT32P5T5G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74VHC1GT32P5T5G is usually 5 days.
3.What payment methods are accepted for MC74VHC1GT32P5T5G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74VHC1GT32P5T5G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74VHC1GT32P5T5G?
MC74VHC1GT32P5T5G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74VHC1GT32P5T5G 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 MC74VHC1GT32P5T5G?
For technical support, including MC74VHC1GT32P5T5G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74VHC1GT32P5T5G requirements.
6.How does Aetrix verify that MC74VHC1GT32P5T5G is sourced from the original manufacturer or authorized distributors?
All MC74VHC1GT32P5T5G 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 MC74VHC1GT32P5T5G meets industry standards.
7.What is the process for return or replacement of MC74VHC1GT32P5T5G?
All MC74VHC1GT32P5T5G units undergo pre-shipment inspection (PSI). If there is an issue with MC74VHC1GT32P5T5G, 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 MC74VHC1GT32P5T5G part is unused and in its original packaging.
Return procedure for MC74VHC1GT32P5T5G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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