onsemi MC74VHCT00ADT
- Part No.:
- MC74VHCT00ADT
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- -
- Datasheet:
-
MC74VHCT00ADT.pdf
- Description:
- IC GATE NAND
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Inventory:8,796
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Product details
Overview
MC74VHCT00ADT from onsemi is a quad 2-input NAND gate IC in TSSOP-14 package, operating from 3.0 V to 5.5 V, with 5.0 ns typical propagation delay at 5 V, TTL-compatible inputs (VIL = 0.8 V, VIH = 2.0 V), and full 5 V CMOS output swing-used for logic-level translation between 3 V and 5 V systems in industrial control and embedded interface circuits.
For engineers reviewing the MC74VHCT00ADT datasheet, pinout, applications, or equivalent options, this page delivers verified electrical specs, pin-functional mapping, real-world use cases, and validated alternative options for voltage translation and high-noise-immunity digital logic design.
Technical Context
The MC74VHCT00ADT implements four independent 2-input NAND gates using silicon-gate CMOS technology, with three-stage internal circuitry including buffered outputs for enhanced noise immunity and stable switching. Its input structure tolerates up to 7 V regardless of VCC, enabling safe interfacing between 3.0 V and 5.0 V domains.
It features power-down protection on all inputs and outputs, supports hot insertion, and maintains functional integrity when VCC = 0 V. Propagation delays are balanced across all gates, and the device meets IEC logic diagram standards with defined truth table behavior (Y = A·B).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 3.0 V to 5.5 V - enables operation across mixed-voltage systems without level-shifter ICs |
| tPD (Typ) | 5.0 ns at VCC = 5 V, CL = 50 pF - supports >100 MHz toggle rates in clean logic paths |
| VIL/VIH | 0.8 V / 2.0 V - ensures reliable recognition of TTL and 3.3 V CMOS logic levels at 5 V supply |
| IOH/IOL | −8 mA / +8 mA - drives standard 50 Ω transmission lines or multiple 74-series inputs directly |
| Input Overvoltage Tolerance | Up to 7 V on any input - eliminates need for external clamping diodes when interfacing higher-voltage signals |
| ICC (Max) | 2 μA at TA = 25°C - enables ultra-low static power in battery-backed or always-on logic monitoring circuits |
| ESD Rating | >2000 V HBM - provides robust handling during board assembly and field service without special ESD controls |
Pinout & Package
TSSOP-14 package (Case 948G), 4.9 mm × 4.4 mm × 1.2 mm body, 0.65 mm pitch, Pb-free (G suffix), moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Y1 Output | NAND result of inputs A1 (pin 2) and B1 (pin 3); rail-to-rail CMOS swing |
| 2 | A1 Input | First input to gate 1; accepts 0–7 V with overvoltage protection |
| 3 | B1 Input | Second input to gate 1; identical electrical characteristics to A1 |
| 4 | B2 Input | Second input to gate 2; shares same input structure and tolerance as A1/B1 |
| 5 | A2 Input | First input to gate 2; fully interchangeable with A1/B1 in layout |
| 6 | Y2 Output | NAND result of A2 (pin 5) and B2 (pin 4); matches Y1 timing and drive strength |
| 7 | GND | Ground reference for all logic and power domains; must be low-impedance |
| 8 | Y3 Output | NAND result of A3 (pin 9) and B3 (pin 10); electrically identical to Y1/Y2 |
| 9 | B3 Input | Second input to gate 3; no functional distinction from other inputs |
| 10 | A3 Input | First input to gate 3; compatible with 1.8 V, 3.0 V, and 5.0 V logic sources |
| 11 | Y4 Output | NAND result of A4 (pin 13) and B4 (pin 14); completes quad gate set |
| 12 | A4 Input | First input to gate 4; supports same overvoltage and noise margin specs |
| 13 | B4 Input | Second input to gate 4; pin-compatible with all other inputs |
| 14 | VCC | Positive supply (3.0–5.5 V); powers all four gates and internal protection circuitry |
Key Features
| Feature | Design Value |
|---|---|
| 3.0–5.5 V wide supply range | Eliminates separate voltage regulators when integrating 3.3 V microcontrollers with 5 V peripherals |
| 7 V input overvoltage tolerance | Enables direct connection to 5 V buses without series resistors or clamps in mixed-supply systems |
| Power-down protection | Prevents backfeeding and latch-up when VCC is off, critical for hot-swap and battery-backup designs |
| Low dynamic noise (VOLP ≤ 0.8 V) | Reduces crosstalk in dense PCB layouts with adjacent analog or RF traces |
| Pb-free TSSOP-14 package | Meets RoHS compliance requirements without derating or thermal compromise vs. SOIC |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
|
Use Scenario: Interfacing 3.3 V MCU GPIOs to legacy 5 V relay driver circuits in programmable logic controllers. IC Role / Device Role / Timing Role: Logic-level translator and signal conditioner ensuring clean 5 V output drive while accepting 3.3 V inputs. Use Value: Eliminates discrete level-shifter components and reduces BOM count by consolidating four translation paths in one 14-pin package. |
Use Scenario: Enabling bidirectional communication between 5 V CAN transceivers and 3.3 V microcontroller wake-up detection logic. IC Role / Device Role / Timing Role: Voltage-tolerant NAND gate used in edge-detection combinational logic for low-power wake-up interrupt generation. Use Value: Survives battery backup conditions (VCC = 0 V) and withstands load-dump transients up to 7 V on input pins. |
| Medical Device Sensor Interface | Test Equipment Digital Pattern Generator |
|
Use Scenario: Conditioning digital outputs from 1.8 V MEMS sensors before feeding into 5 V ADC control logic in portable diagnostic gear. IC Role / Device Role / Timing Role: Input-tolerant logic buffer providing noise-immune signal conditioning with sub-5 ns delay. Use Value: Maintains timing integrity across voltage domains while meeting stringent IEC 60601-1 creepage/clearance requirements via compact TSSOP footprint. |
Use Scenario: Generating synchronized enable/disable strobes for multi-channel D/A converters in automated test systems. IC Role / Device Role / Timing Role: Quad NAND used in clock gating and pattern sequencing logic with matched propagation delays. Use Value: Balanced tPLH/tPHL ensures deterministic setup/hold margins for high-speed DAC triggering at 100+ MHz rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2-input NAND gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC00APW | Lower VCC range (1.65–3.6 V); no 7 V input tolerance; 3.5 ns tPD at 3.3 V | Restricted to single-supply 3.3 V systems; unsuitable for 5 V interfacing or hot-swap | Select when only 3.3 V operation is required and maximum speed at low voltage is critical |
| 74HC00PW | No TTL input compatibility; VIL/VIH thresholds tied to VCC/2; no overvoltage protection | Requires external level-shifting for 3.3 V → 5 V translation; vulnerable to input overvoltage | Choose for cost-sensitive 5 V-only designs where input voltage matching is guaranteed |
Compared with SN74LVC00APW and 74HC00PW, the MC74VHCT00ADT uniquely supports mixed-voltage translation, survives VCC = 0 V conditions, and guarantees TTL-compatible thresholds across its full 3.0–5.5 V range-making it the only option among the three qualified for robust 3 V/5 V boundary interfacing without additional components.
Availability
MC74VHCT00ADT is available at Aetrix Electronics and suitable for industrial PLCs, automotive body control modules, medical sensor interfaces, and automated test equipment requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MC74VHCT00ADT 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 (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient innovation for automotive, industrial, cloud, and medical applications.
The MC74VHCT00ADT belongs to the VHCT logic family, designed specifically for high-speed, low-power, mixed-voltage system interfacing with robust input/output protection and TTL compatibility.
FAQ
What is the maximum input voltage the MC74VHCT00ADT can tolerate?
The MC74VHCT00ADT supports DC input voltages up to 7.0 V on any input pin, regardless of VCC level. This overvoltage tolerance is enabled by internal protection circuitry and allows safe interfacing with 5 V signals while operating from a 3.3 V supply. The specification is confirmed in the Absolute Maximum Ratings table and reinforced in the Functional Description section of the datasheet.
Does the MC74VHCT00ADT support operation at 3.3 V supply?
Yes, the MC74VHCT00ADT is fully specified for operation from 3.0 V to 5.5 V. At VCC = 3.3 V, it delivers tPD = 4.1 ns (typ) with CL = 15 pF and maintains TTL-compatible input thresholds (VIL = 0.53 V, VIH = 1.4 V). All DC and AC parameters in the datasheet include 3.3 V test conditions.
Is the MC74VHCT00ADT pin-compatible with standard 74-series NAND gates?
Yes, the MC74VHCT00ADT is pin- and function-compatible with industry-standard 7400, 74LS00, and 74HC00 devices in the same TSSOP-14 package. Pin assignments match the JEDEC-standard 14-pin dual-in-line layout, including VCC on pin 14 and GND on pin 7. This compatibility is explicitly stated in the datasheet's "Pin Assignment" and "Ordering Information" sections.
Can the MC74VHCT00ADT be used with VCC = 0 V?
Yes, the MC74VHCT00ADT features power-down protection that ensures safe operation when VCC = 0 V. Inputs and outputs remain protected against back-driving, and the device will not be damaged even if input signals are applied during power-off. This capability is documented in the Functional Description and confirmed in the Maximum Ratings table under "Output Diode Current" and "Input Diode Current" limits.
What is the logic function implemented by each gate in the MC74VHCT00ADT?
Each of the four gates in the MC74VHCT00ADT implements the standard 2-input NAND Boolean function: Y = NOT(A AND B). This is verified by the Function Table, Logic Diagram, and IEC Logic Diagram in the datasheet. For example, when A1 (pin 2) and B1 (pin 3) are both HIGH, Y1 (pin 1) goes LOW; all other input combinations yield HIGH at the output.
MC74VHCT00ADT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Circuits:
- -
- Number of Inputs:
- -
- Features:
- -
- Voltage - Supply:
- -
- Current - Quiescent (Max):
- -
- Current - Output High, Low:
- -
- Input Logic Level - Low:
- -
- Input Logic Level - High:
- -
- Max Propagation Delay @ V, Max CL:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
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- Mounting Type:
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- Supplier Device Package:
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MC74VHCT00ADT FAQ
1.How can I place an order for MC74VHCT00ADT through Aetrix?
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The price and inventory of MC74VHCT00ADT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74VHCT00ADT is usually 5 days.
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Once your MC74VHCT00ADT 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 MC74VHCT00ADT?
For technical support, including MC74VHCT00ADT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74VHCT00ADT requirements.
6.How does Aetrix verify that MC74VHCT00ADT is sourced from the original manufacturer or authorized distributors?
All MC74VHCT00ADT 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 MC74VHCT00ADT meets industry standards.
7.What is the process for return or replacement of MC74VHCT00ADT?
All MC74VHCT00ADT units undergo pre-shipment inspection (PSI). If there is an issue with MC74VHCT00ADT, 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 MC74VHCT00ADT part is unused and in its original packaging.
Return procedure for MC74VHCT00ADT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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