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onsemi MC74VHC1GT02DBVT1G
- Part No.:
- MC74VHC1GT02DBVT1G
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MC74VHC1GT02DBVT1G.pdf
- Description:
- IC GATE NOR 1CH 2-INP SC74A
- Quantity:
- Payment:
- Shipping:
Inventory:2,999
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Product details
Overview
MC74VHC1GT02DBVT1G from onsemi is a single 2-input NOR gate with TTL-level input thresholds, designed for 2.0 V to 5.5 V operation, delivering 3.5 ns typical propagation delay at 5 V, ±8 mA output drive at 3.0 V, and over-voltage tolerant inputs/outputs up to 5.5 V - used in level-shifting logic interfaces between 3 V and 5 V systems.
For engineers reviewing the MC74VHC1GT02DBVT1G datasheet, pinout, applications, or equivalent options, key selection criteria include input threshold compatibility (TTL vs. CMOS), supply voltage range, propagation delay, output drive strength, and SC-74A package footprint for space-constrained PCB layouts.
Technical Context
This device implements a standard two-input NOR logic function with complementary MOSFET structure, supporting active-high and active-low signal inversion in digital control paths. Its TTL-compatible input thresholds (VIH = 1.0 V min at 2.0 V VCC; VIL = 0.28 V max) enable direct interfacing with legacy 5 V TTL outputs while operating from 3 V supplies.
The SC-74A package (Case 318BQ) houses five terminals with validated pinout: Pin 1 = B (input), Pin 2 = A (input), Pin 3 = GND, Pin 4 = Y (output), Pin 5 = VCC. Input/output over-voltage tolerance (up to 5.5 V independent of VCC) and IOFF partial power-down protection support hot-swap and mixed-voltage system integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.0 V to 5.5 V - enables interoperability across 2.5 V, 3.3 V, and 5 V logic domains without level translators. |
| tPD (typ) | 3.5 ns at 5 V - supports high-speed timing in clock gating, enable/disable control, and combinatorial logic paths. |
| IOH/IOL | ±8 mA at 3.0 V - sufficient to drive multiple 74-series inputs or small capacitive loads (<15 pF) directly. |
| Input Thresholds | TTL-compatible: VIH = 1.0 V (min @ 2.0 V), VIL = 0.28 V (max @ 2.0 V) - ensures reliable recognition of 5 V TTL signals at lower supply voltages. |
| Over-Voltage Tolerance | Inputs/outputs withstand up to 5.5 V regardless of VCC - eliminates need for external clamping diodes when interfacing 5 V peripherals to 3 V controllers. |
| IOFF Leakage | <10 µA at VCC = 0 V - prevents back-powering and signal contention during partial power-down states. |
Pinout & Package
MC74VHC1GT02DBVT1G 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.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | B | Second logic input; accepts TTL- or CMOS-level signals; over-voltage tolerant to 5.5 V. |
| 2 | A | Primary logic input; electrically identical to Pin 1; supports same voltage and timing specs. |
| 3 | GND | Ground reference for internal circuitry and output stage; must be low-impedance for stable noise margin. |
| 4 | Y | NOR output (A NOR B); rail-to-rail swing; capable of sourcing/sinking ±8 mA at 3.0 V. |
| 5 | VCC | Positive supply; powers internal logic and output drivers; supports 2.0–5.5 V with full parametric performance. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-level input thresholds | Enables direct connection to legacy 5 V TTL outputs without level shifters, even when VCC = 3.3 V or 2.5 V. |
| Over-voltage tolerant I/O | Withstands 5.5 V on any pin regardless of VCC value - simplifies mixed-voltage board design and improves robustness against supply sequencing faults. |
| IOFF partial power-down protection | Prevents current backflow through inputs/outputs when VCC = 0 V - essential for hot-pluggable modules and battery-backed subsystems. |
| Low propagation delay | 3.5 ns typical at 5 V allows use in timing-critical paths such as clock enable gating and state-machine control signals. |
| Pb-free, RoHS-compliant packaging | SC-74A package meets environmental compliance requirements for industrial and automotive applications without derating. |
Applications
| Industrial PLC I/O Modules | Automotive Body Control Units |
|---|---|
|
Use Scenario: Isolating and conditioning sensor interrupt signals before routing to a 3.3 V microcontroller in an industrial programmable logic controller. IC Role / Device Role / Timing Role: NOR gate performing active-low signal combination and voltage translation from 5 V discrete sensors to 3.3 V MCU GPIO. Use Value: Eliminates external level-shifter ICs by accepting 5 V inputs while operating from 3.3 V supply, reducing BOM count and board area. |
Use Scenario: Enabling/disabling power to auxiliary lighting circuits based on dual safety interlock signals in a vehicle body control module. IC Role / Device Role / Timing Role: Logic gate implementing fail-safe AND-NOT function (via NOR with inverted inputs) for redundant enable control. Use Value: Provides deterministic low-latency response (<3.5 ns) to fault conditions while maintaining AEC-Q100-compliant reliability in harsh environments. |
| Consumer IoT Hub Gateways | Medical Diagnostic Equipment Interfaces |
|
Use Scenario: Managing wake-up signal arbitration between multiple low-power sensors sharing a common interrupt line to a 3 V SoC. IC Role / Device Role / Timing Role: NOR-based wired-OR combiner that asserts active-low interrupt only when all sensors are idle. Use Value: Leverages IOFF protection to prevent leakage-induced false wakes during sleep mode, extending battery life in always-on edge devices. |
Use Scenario: Interfacing legacy 5 V RS-232 transceiver status lines to a 3.3 V FPGA-based diagnostic controller in portable ultrasound equipment. IC Role / Device Role / Timing Role: Level-translating buffer ensuring correct logic interpretation of DSR/CTS signals under varying supply conditions. Use Value: Over-voltage tolerance avoids damage during transient overvoltage events common in medical-grade power supplies and ESD-prone environments. |
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 | CMOS input thresholds (VIH = 1.7 V min @ 3.3 V), slightly higher tPD (4.5 ns typ @ 3.3 V), same SC-70-5 (SC-74A) package. | Requires compatible CMOS-level driving sources; less suitable for direct 5 V TTL interface without pull-ups. | Select when interfacing exclusively with 3.3 V CMOS logic and lowest possible static current is prioritized. |
| 74AUP1G02GW,125 | Ultra-low power (ICC = 0.9 µA max), wider VCC range (0.8–3.6 V), but no over-voltage tolerance - max input = VCC + 0.3 V. | Not usable in mixed 3 V/5 V systems; limited to single-supply sub-3.6 V designs with strict power budgets. | Select for battery-powered wearable sensors where nanowatt quiescent current outweighs interface flexibility. |
Compared with SN74LVC1G02DBVR and 74AUP1G02GW,125, the MC74VHC1GT02DBVT1G uniquely balances TTL input compatibility, 5.5 V over-voltage tolerance, and SC-74A footprint - making it the only option among the three qualified for direct 5 V-to-3.3 V level translation without external components.
Availability
MC74VHC1GT02DBVT1G is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and consumer IoT hub gateways requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MC74VHC1GT02DBVT1G 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 manufacturer specializing in energy-efficient silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The MC74VHC1GT02DBVT1G belongs to the VHC1G ultra-small logic family, engineered for space-constrained, mixed-voltage digital interfaces where pin count, footprint, and voltage translation capability are critical.
FAQ
What is the input voltage threshold behavior of MC74VHC1GT02DBVT1G?
The MC74VHC1GT02DBVT1G features TTL-compatible input thresholds: VIH is guaranteed ≥1.0 V at 2.0 V VCC and ≥2.0 V at 5.5 V VCC; VIL is guaranteed ≤0.28 V at 2.0 V VCC and ≤0.8 V at 5.5 V VCC. This allows reliable recognition of standard 5 V TTL output levels even when powered from 3.3 V or 2.5 V supplies - a key differentiator from CMOS-threshold variants like MC74VHC1G02.
Does MC74VHC1GT02DBVT1G support partial power-down operation?
Yes, MC74VHC1GT02DBVT1G includes IOFF circuitry that disables input and output paths when VCC = 0 V, limiting leakage current to ≤10 µA. This prevents back-driving of powered sections in multi-rail systems and supports hot-insertion scenarios - confirmed in the DC Electrical Characteristics table under "IOFF Power Off Leakage Current".
What is the maximum propagation delay for MC74VHC1GT02DBVT1G across its operating range?
The maximum propagation delay for MC74VHC1GT02DBVT1G is 13.0 ns (tPHL/tPLH) at VCC = 3.0–3.6 V and CL = 50 pF, over the full temperature range of −55 °C to +125 °C. At 5.5 V VCC and CL = 50 pF, the max delay is 10.0 ns - both values are specified in the AC Electrical Characteristics table for the MC74VHC1GT02 variant.
Which package does MC74VHC1GT02DBVT1G use, and what are its mechanical dimensions?
MC74VHC1GT02DBVT1G uses the SC-74A package (Case 318BQ), measuring 3.00 mm × 1.50 mm × 0.95 mm with 0.95 mm lead pitch. Pin 1 orientation is marked with a dot or beveled edge per the generic marking diagram in the datasheet - consistent across all DBVT1G-suffixed variants.
Is MC74VHC1GT02DBVT1G qualified for automotive applications?
MC74VHC1GT02DBVT1G itself is not automotive-qualified; however, the automotive-grade version MC74VHC1GT02DBVT1G-Q* carries the "-Q" suffix, is AEC-Q100 qualified, and PPAP capable. The standard MC74VHC1GT02DBVT1G meets industrial temperature range (−55 °C to +125 °C) and is RoHS compliant but lacks formal automotive qualification documentation.
MC74VHC1GT02DBVT1G 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:
- 3V ~ 5.5V
- Current - Quiescent (Max):
- 1 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:
- 7.7ns @ 5V, 50pF
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-74A
MC74VHC1GT02DBVT1G FAQ
1.How can I place an order for MC74VHC1GT02DBVT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74VHC1GT02DBVT1G 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 MC74VHC1GT02DBVT1G reliable?
The price and inventory of MC74VHC1GT02DBVT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74VHC1GT02DBVT1G is usually 5 days.
3.What payment methods are accepted for MC74VHC1GT02DBVT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74VHC1GT02DBVT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74VHC1GT02DBVT1G?
MC74VHC1GT02DBVT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74VHC1GT02DBVT1G 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 MC74VHC1GT02DBVT1G?
For technical support, including MC74VHC1GT02DBVT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74VHC1GT02DBVT1G requirements.
6.How does Aetrix verify that MC74VHC1GT02DBVT1G is sourced from the original manufacturer or authorized distributors?
All MC74VHC1GT02DBVT1G 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 MC74VHC1GT02DBVT1G meets industry standards.
7.What is the process for return or replacement of MC74VHC1GT02DBVT1G?
All MC74VHC1GT02DBVT1G units undergo pre-shipment inspection (PSI). If there is an issue with MC74VHC1GT02DBVT1G, 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 MC74VHC1GT02DBVT1G part is unused and in its original packaging.
Return procedure for MC74VHC1GT02DBVT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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