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Home > Products > Integrated Circuits (ICs) > Logic > Gates and Inverters

onsemi MC74VHCT00AD

Name: MC74VHCT00AD
Brand: onsemi
SKU: MC74VHCT00AD
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MC74VHCT00AD

Manufacturer:: onsemi

Category:: Gates and Inverters

Package:: -

Datasheet:: MC74VHCT00AD.pdf

Description:: IC GATE NAND

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Product details

Overview

MC74VHCT00AD from onsemi is a quad 2-input NAND gate IC in SOIC-14 package, operating from 3.0 V to 5.5 V, with TTL-compatible inputs (V_IL = 0.8 V, V_IH = 2.0 V), 5.0 ns typical propagation delay at V_CC = 5 V, and input overvoltage tolerance up to 7 V - enabling 3 V/5 V logic-level translation in industrial control and mixed-voltage digital systems.

For engineers reviewing the MC74VHCT00AD datasheet, pinout, applications, or equivalent options, key selection considerations include its dual-supply interoperability, power-down protection on inputs/outputs, balanced t_PLH/t_PHL, low ICC (2 μA max), and compatibility with legacy TTL and modern CMOS interfaces in space-constrained PCB designs.

Technical Context

The MC74VHCT00AD implements four independent NAND gates using silicon-gate CMOS technology with three-stage internal buffering, delivering high noise immunity and stable rail-to-rail output swing. Its input structure tolerates up to 7 V regardless of V_CC, supporting robust level-shifting between 1.8 V, 3.0 V, and 5.0 V domains.

Output stages feature active protection when V_CC = 0 V, preventing latch-up or damage during hot insertion, battery backup transitions, or supply sequencing mismatches. The device meets IEC logic standards and supports operation across −55°C to +125°C with guaranteed AC performance at C_L = 50 pF.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	3.0 V to 5.5 V - enables direct integration into both 3.3 V and 5 V systems without external level shifters.
t_PD (Typ)	5.0 ns at V_CC = 5 V, C_L = 50 pF - supports >100 MHz toggle rates in combinatorial logic paths.
V_IL/V_IH	0.8 V / 2.0 V - ensures reliable recognition of TTL output levels while driving CMOS loads.
Input Overvoltage	Up to 7 V independent of V_CC - allows safe interfacing of 5 V signals into 3 V-powered systems.
I_CC (Max)	2 μA at T_A = 25°C - minimizes standby power in battery-backed or energy-sensitive applications.
ESD Rating	>2000 V HBM - provides inherent robustness against handling-induced electrostatic discharge.
Operating Temp	−55°C to +125°C - qualified for automotive under-hood, industrial motor control, and aerospace environments.

Pinout & Package

MC74VHCT00AD is housed in a 14-pin SOIC package (Case 751A, DT suffix not applicable; D suffix confirmed), with standard 1.27 mm pitch, 8.55–8.75 mm body length, and Pb-free option available (G suffix).

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 referenced to V_CC.
2	A1 Input	First input of Gate 1; accepts TTL- or CMOS-level signals up to 7 V regardless of V_CC.
3	B1 Input	Second input of Gate 1; identical electrical characteristics and protection as pin 2.
4	B2 Input	Second input of Gate 2; electrically isolated but shares same input structure and voltage tolerance.
5	A2 Input	First input of Gate 2; fully interchangeable with pins 2 and 3 in layout and function.
6	Y2 Output	NAND result of A2/B2; matched propagation delay and drive strength to Y1–Y4.
7	GND	Ground reference for all inputs, outputs, and internal circuitry; must be low-impedance connection.
8	Y3 Output	NAND result of A3 (pin 9) and B3 (pin 10); identical timing and noise performance to other outputs.
9	B3 Input	Second input of Gate 3; supports same overvoltage and noise margin specs as all inputs.
10	A3 Input	First input of Gate 3; no functional distinction from pins 2, 3, 4, or 5.
11	A4 Input	First input of Gate 4; completes quad gate set; pin 11–14 follow standard SOIC numbering.
12	Y4 Output	NAND result of A4 (pin 11) and B4 (pin 13); full 5 V CMOS output swing with 8 mA sink/source capability.
13	B4 Input	Second input of Gate 4; validated for 100 ns/V input rise/fall time compliance at V_CC = 5 V.
14	V_CC	Positive supply rail; must be decoupled locally with 0.1 μF ceramic capacitor to GND (pin 7).

Key Features

Feature	Design Value
TTL-Compatible Inputs	Accepts 0.8 V/2.0 V thresholds while operating from 3.0–5.5 V supply - eliminates need for external translators in mixed-logic systems.
Input Overvoltage Tolerance	Withstands up to 7 V on any input pin regardless of V_CC - enables safe 5 V → 3 V interface without clamping diodes or resistors.
Power-Down Protection	Inputs and outputs remain protected even when V_CC = 0 V - prevents back-powering or latch-up during hot-swap or partial power-down sequences.
Balanced Propagation Delays	t_PLH and t_PHL match within ±10% across temperature - critical for glitch-free timing in synchronous state machines and clock gating.
Pb-Free SOIC Packaging	RoHS-compliant lead finish (G suffix variant) with standard reflow profile compatibility - supports automated assembly without process changes.

Applications

Industrial PLC I/O Modules	Automotive Body Control Units
Use Scenario: Isolating and conditioning sensor switch inputs (e.g., door ajar, hood open) before feeding microcontroller GPIOs in 12 V vehicle systems. IC Role / Device Role / Timing Role: Logic-level translator and signal conditioner - converts 12 V pull-up switch signals to clean 5 V CMOS-compatible levels while suppressing EMI-induced glitches. Use Value: Eliminates discrete resistor-divider networks and Schmitt-trigger buffers, reducing BOM count and board area by 30% per channel in multi-input modules.	Use Scenario: Implementing hardware interlocks for seatbelt pretensioner enable/disable logic where 3.3 V MCU outputs must safely control 5 V solenoid drivers. IC Role / Device Role / Timing Role: Voltage-domain boundary gate - ensures strict logical AND of two independent safety signals before releasing high-side driver enable. Use Value: Provides fail-safe behavior with <10 ns timing skew between channels, meeting ISO 26262 ASIL-B diagnostic coverage requirements for redundant path validation.
Medical Infusion Pump Controllers	Telecom Line Card Supervision
Use Scenario: Debouncing mechanical keypad inputs in battery-powered infusion pumps operating from 3.3 V rails while interfacing to 5 V display backlight drivers. IC Role / Device Role / Timing Role: Low-power combinatorial logic element - performs NAND-based edge detection and state filtering with sub-μA quiescent current. Use Value: Extends battery life by 12% versus standard HC-series alternatives due to 2 μA max I_CC and zero dynamic power at idle (CPD = 17 pF).	Use Scenario: Monitoring multiple alarm conditions (power fail, temperature exceed, fan stall) on telecom line cards where 5 V monitoring circuits interface with 3.3 V FPGA management logic. IC Role / Device Role / Timing Role: Bidirectional voltage translator - accepts 5 V alarm signals and outputs 3.3 V–compatible logic levels to FPGA GPIOs without external biasing. Use Value: Reduces supervision circuit latency by 4.5 ns versus discrete MOSFET solutions, improving fault response time to <150 ns in mission-critical link monitoring.

Industrial PLC I/O Modules

Automotive Body Control Units

Use Scenario: Isolating and conditioning sensor switch inputs (e.g., door ajar, hood open) before feeding microcontroller GPIOs in 12 V vehicle systems.

IC Role / Device Role / Timing Role: Logic-level translator and signal conditioner - converts 12 V pull-up switch signals to clean 5 V CMOS-compatible levels while suppressing EMI-induced glitches.

Use Value: Eliminates discrete resistor-divider networks and Schmitt-trigger buffers, reducing BOM count and board area by 30% per channel in multi-input modules.

Use Scenario: Implementing hardware interlocks for seatbelt pretensioner enable/disable logic where 3.3 V MCU outputs must safely control 5 V solenoid drivers.

IC Role / Device Role / Timing Role: Voltage-domain boundary gate - ensures strict logical AND of two independent safety signals before releasing high-side driver enable.

Use Value: Provides fail-safe behavior with <10 ns timing skew between channels, meeting ISO 26262 ASIL-B diagnostic coverage requirements for redundant path validation.

Medical Infusion Pump Controllers

Telecom Line Card Supervision

Use Scenario: Debouncing mechanical keypad inputs in battery-powered infusion pumps operating from 3.3 V rails while interfacing to 5 V display backlight drivers.

IC Role / Device Role / Timing Role: Low-power combinatorial logic element - performs NAND-based edge detection and state filtering with sub-μA quiescent current.

Use Value: Extends battery life by 12% versus standard HC-series alternatives due to 2 μA max I_CC and zero dynamic power at idle (CPD = 17 pF).

Use Scenario: Monitoring multiple alarm conditions (power fail, temperature exceed, fan stall) on telecom line cards where 5 V monitoring circuits interface with 3.3 V FPGA management logic.

IC Role / Device Role / Timing Role: Bidirectional voltage translator - accepts 5 V alarm signals and outputs 3.3 V–compatible logic levels to FPGA GPIOs without external biasing.

Use Value: Reduces supervision circuit latency by 4.5 ns versus discrete MOSFET solutions, improving fault response time to <150 ns in mission-critical link monitoring.

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
SN74LVC00APWR	Lower V_CC range (1.65–5.5 V); no 7 V input tolerance; 3.7 ns t_PD at 3.3 V; 32 mA output drive.	Optimized for 1.8 V/3.3 V-only systems; unsuitable for 5 V→3 V translation without external clamping.	Select when operating exclusively below 3.6 V and maximum speed at low voltage is prioritized over mixed-voltage robustness.
74AHC00PW,118	Wider V_CC (2–5.5 V); 5.5 ns t_PD at 5 V; no specified 7 V input rating; higher I_CC (4 μA max).	Lacks guaranteed overvoltage tolerance; requires careful input voltage limiting in mixed-rail designs.	Choose for cost-sensitive consumer applications where 5 V system compatibility is sufficient and 7 V input resilience is unnecessary.

Compared with SN74LVC00APWR and 74AHC00PW,118, the MC74VHCT00AD uniquely delivers 7 V input tolerance with TTL-compatible thresholds and sub-μA quiescent current - making it the only option among the three qualified for unbuffered 5 V-to-3 V translation in extended-temperature industrial systems.

Availability

MC74VHCT00AD is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, and medical device applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.

Supply support for MC74VHCT00AD 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 specializing in energy-efficient power management, analog, logic, and sensing technologies for automotive, industrial, and cloud infrastructure markets.

The VHCT logic family, including MC74VHCT00AD, was designed specifically for mixed-voltage system interfacing - combining TTL input compatibility, CMOS output drive, and overvoltage-hardened inputs to simplify voltage domain bridging in harsh-environment electronics.

FAQ

What is the maximum input voltage the MC74VHCT00AD can tolerate regardless of V_CC?

The MC74VHCT00AD supports DC input voltages up to 7.0 V on any input pin, irrespective of the applied V_CC value. This overvoltage tolerance is explicitly guaranteed in the Absolute Maximum Ratings table and enables direct connection of 5 V signals into 3 V systems without external protection components - a key differentiator versus standard LVC or AHC logic families.

Does the MC74VHCT00AD support operation at 3.3 V with TTL-level inputs?

Yes, the MC74VHCT00AD operates across 3.0 V to 5.5 V and maintains TTL-compatible input thresholds (V_IL ≤ 0.8 V, V_IH ≥ 2.0 V) at all V_CC values in that range. At V_CC = 3.3 V, it reliably recognizes standard 3.3 V TTL outputs while delivering full-rail CMOS outputs - verified in the DC Electrical Characteristics table for TA ≤ 125°C.

What is the typical propagation delay of the MC74VHCT00AD at 5 V supply and 50 pF load?

The MC74VHCT00AD exhibits a typical propagation delay (t_PLH/t_PHL) of 5.0 ns at V_CC = 5.0 V ± 0.5 V with C_L = 50 pF and input rise/fall times of 3.0 ns, as specified in the AC Electrical Characteristics table. This value is measured across all four gates and remains balanced within ±10% over temperature.

Is the MC74VHCT00AD pin-compatible with standard 74-series TTL NAND gates?

Yes, the MC74VHCT00AD uses the industry-standard 14-pin SOIC footprint and pinout matching 74LS00, 74HC00, and 74HCT00 devices. Pin assignments for inputs (A1–B4), outputs (Y1–Y4), V_CC (pin 14), and GND (pin 7) are identical - enabling drop-in replacement in existing designs without PCB modification.

What packaging options are available for the MC74VHCT00AD?

The MC74VHCT00AD is offered in SOIC-14 (Case 751A) packaging, available in both standard (MC74VHCT00AD) and Pb-free (MC74VHCT00ADR2G) variants. Tape-and-reel (2500 units) and rail (48 units) configurations are supported. TSSOP-14 variants exist under different part numbers (e.g., MC74VHCT00ADTR2G) but are not designated by the base MC74VHCT00AD ordering code.

MC74VHCT00AD 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:: -

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MC74VHCT00AD FAQ

1.How can I place an order for MC74VHCT00AD through Aetrix?

Please submit a Request for Quotation (RFQ) for MC74VHCT00AD 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 MC74VHCT00AD reliable?

The price and inventory of MC74VHCT00AD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74VHCT00AD is usually 5 days.

3.What payment methods are accepted for MC74VHCT00AD?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74VHCT00AD transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MC74VHCT00AD?

MC74VHCT00AD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MC74VHCT00AD 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 MC74VHCT00AD?

For technical support, including MC74VHCT00AD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74VHCT00AD requirements.

6.How does Aetrix verify that MC74VHCT00AD is sourced from the original manufacturer or authorized distributors?

All MC74VHCT00AD 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 MC74VHCT00AD meets industry standards.

7.What is the process for return or replacement of MC74VHCT00AD?

All MC74VHCT00AD units undergo pre-shipment inspection (PSI). If there is an issue with MC74VHCT00AD, 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 MC74VHCT00AD part is unused and in its original packaging.

Return procedure for MC74VHCT00AD:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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