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onsemi 74VHC02MX
- Part No.:
- 74VHC02MX
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74VHC02MX.pdf
- Description:
- IC GATE NOR 4CH 2-INP 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,164
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Product details
Overview
74VHC02MX from ON Semiconductor is a quad 2-input NOR gate IC in 14-lead SOIC package, operating from 2.0V to 5.5V supply, with 3.6ns typical propagation delay at 5V, 2µA max quiescent current at 25°C, and input protection up to 7V - used in level-shifting logic interfaces between 5V and 3V systems.
For engineers reviewing the 74VHC02MX datasheet, pinout, applications, or equivalent options, key selection criteria include VCC range compatibility, input overvoltage tolerance, propagation delay vs. load capacitance, and SOIC-14 pin-to-pin alignment with legacy 74HC02 designs.
Technical Context
The 74VHC02MX implements four independent 2-input NOR gates using silicon-gate CMOS technology, achieving TTL-compatible speed while retaining CMOS power efficiency. Its three-stage internal structure includes buffered outputs for improved noise immunity and stable switching.
Input protection circuitry allows safe application of 0V–7V signals regardless of VCC, enabling robust interfacing across mixed-supply domains. Unused inputs must be tied HIGH or LOW per design specification to prevent floating-induced instability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.0V to 5.5V - supports dual-voltage system interfacing and battery-backed operation |
| tPD (Typ.) | 3.6ns at VCC = 5V, CL = 15pF - enables high-speed combinational logic in timing-critical paths |
| ICC (Max) | 2µA at TA = 25°C - ensures ultra-low static power for always-on or low-duty-cycle control logic |
| Input Voltage Range | –0.5V to +7.0V - permits safe connection to higher-voltage signals without external clamping |
| Output Drive | ±8mA at VCC = 4.5V - sufficient to drive multiple CMOS loads or small capacitive buses |
| Operating Temp | –40°C to +85°C - qualified for industrial-grade embedded control and automotive under-hood auxiliary logic |
Pinout & Package
74VHC02MX is housed in a 14-lead Small Outline Integrated Circuit (SOIC) package, JEDEC MS-012, 0.150" narrow body, lead-free per J-STD-020B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 11, 12 | Input (A1/B1, A2/B2, A3/B3, A4/B4) | Four independent NOR gate inputs - each pair forms one gate; all support 0–7V tolerant operation |
| 3, 6, 10, 13 | Output (Y1, Y2, Y3, Y4) | Active-low NOR outputs - rail-to-rail swing with ±8mA drive capability into standard CMOS loads |
| 7 | GND | Ground reference for all logic and power domains - must be low-impedance for noise immunity |
| 14 | VCC | Positive supply - powers all four gates; decoupling capacitor required near pin for AC stability |
Key Features
| Feature | Design Value |
|---|---|
| High-speed NOR logic | 3.6ns typical propagation delay at 5V enables sub-10ns combinatorial paths in synchronous designs |
| Input overvoltage tolerance | Inputs withstand –0.5V to +7.0V independent of VCC - eliminates need for external level shifters in mixed-supply interconnects |
| Low-noise output | VOLP ≤ 0.8V (max) at CL = 50pF - reduces ground bounce and crosstalk in dense PCB layouts |
| Power-down input protection | All inputs protected during power-off or brown-out - prevents back-driving and latch-up when VCC = 0V |
Applications
| Industrial Control Logic | 5V/3.3V Level Translation |
|---|---|
Use Scenario: Discrete safety interlock monitoring in PLC I/O modules where input signals originate from 24V sensors via resistive dividers. IC Role / Device Role / Timing Role: NOR gate performing active-low enable/disable logic for relay drivers and fault latching circuits. Use Value: Input overvoltage tolerance allows direct connection to scaled-down sensor outputs without additional protection components. | Use Scenario: Bidirectional voltage translation between legacy 5V microcontroller GPIO and modern 3.3V peripheral interface lines. IC Role / Device Role / Timing Role: Combinational logic element implementing wired-OR or enable gating with supply-independent input thresholds. Use Value: Guaranteed VIH/VIL thresholds across 2.0–5.5V VCC ensure reliable recognition of both 3.3V and 5V logic levels. |
| Battery Backup System Control | Glitch-Free Power Sequencing |
Use Scenario: Managing switchover between main and backup power rails in medical data loggers with nonvolatile memory retention. IC Role / Device Role / Timing Role: NOR-based priority encoder detecting power-fail conditions and asserting hold signals to SRAM and RTC circuits. Use Value: Input protection up to 7V permits direct sensing of unregulated battery voltage without attenuation or clamping diodes. | Use Scenario: Synchronizing power-on reset assertion across multiple voltage domains in FPGA carrier boards with staggered rail sequencing. IC Role / Device Role / Timing Role: Gate-level combiner of individual rail-good signals to generate a composite system-ready flag. Use Value: Sub-10ns propagation delay ensures deterministic timing margin for reset deassertion relative to slowest rail stabilization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad 2-input NOR gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC02M | Higher ICC (4µA max), slower tPD (15ns typ. at 5V), no 7V input tolerance | Limited to single-supply 5V systems; unsuitable for mixed-voltage or overvoltage interface roles | Select when cost sensitivity outweighs speed/power requirements and input voltage margins are guaranteed |
| SN74LVC02APW | 3.3V-only VCC range (1.65–3.6V), lower drive (±24mA), no 7V input rating | Optimized for low-voltage portable electronics; incompatible with 5V signal domains without translators | Prefer for battery-powered 3.3V-only designs requiring higher output current and smaller TSSOP footprint |
Compared with 74HC02M and SN74LVC02APW, the 74VHC02MX uniquely balances 5V-system compatibility, 7V input tolerance, and sub-4ns speed - making it the only choice for robust level-shifting NOR logic in industrial mixed-supply environments.
Availability
74VHC02MX is available at Aetrix Electronics and suitable for industrial control logic, 5V/3.3V level translation, battery backup system control, and glitch-free power sequencing requiring stable component supply and long-term manufacturability.
Supply support for 74VHC02MX 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
ON Semiconductor is a global semiconductor manufacturer specializing in energy-efficient power, analog, sensor, and logic solutions for automotive, industrial, and cloud infrastructure applications.
The 74VHC series was designed to deliver high-speed CMOS performance with TTL-compatible timing and enhanced input ruggedness - specifically targeting industrial and mixed-supply digital interface applications.
FAQ
What is the maximum input voltage the 74VHC02MX can tolerate?
The 74VHC02MX supports DC input voltages from –0.5V to +7.0V regardless of VCC level, thanks to integrated input protection circuitry. This allows direct connection to higher-voltage signals - such as scaled-down 24V sensor outputs - without external clamping components. The specification is validated across the full operating temperature range of –40°C to +85°C and applies to all 8 input pins (pins 1, 2, 4, 5, 8, 9, 11, 12) of the 74VHC02MX.
Is the 74VHC02MX pin-compatible with the 74HC02 family?
Yes, the 74VHC02MX is pin and function compatible with the 74HC02, sharing identical SOIC-14 pinout and truth table behavior. All four NOR gates map identically: inputs on pins 1–2, 4–5, 8–9, 11–12 and outputs on pins 3, 6, 10, 13. However, the 74VHC02MX offers superior speed (3.6ns vs. 15ns typical), lower ICC (2µA vs. 4µA max), and extended input voltage tolerance - making it a drop-in upgrade where those parameters matter.
What is the recommended decoupling for the 74VHC02MX?
A 0.1µF ceramic capacitor placed as close as possible to the VCC (pin 14) and GND (pin 7) terminals is recommended for the 74VHC02MX. For boards with multiple 74VHC02MX devices or high-frequency switching loads, add a bulk 4.7µF–10µF tantalum or aluminum electrolytic capacitor near the power entry point. This minimizes supply rail noise and ensures stable output transitions, especially under dynamic load conditions specified in the AC Electrical Characteristics table.
Can unused inputs on the 74VHC02MX be left floating?
No, unused inputs on the 74VHC02MX must not be left floating. Per the datasheet, all unused inputs must be tied either HIGH (to VCC) or LOW (to GND) to prevent undefined logic states, increased power consumption, and potential oscillation. Floating inputs may cause excessive ICC due to intermediate biasing of internal MOSFETs, and could compromise noise immunity. This requirement applies to all eight input pins of the 74VHC02MX, regardless of whether the associated gate is used in the design.
Does the 74VHC02MX support operation at 3.3V supply?
Yes, the 74VHC02MX is fully specified for operation at 3.3V (within its 2.0V–5.5V VCC range). At VCC = 3.3V ± 0.3V, it delivers 5.6ns typical propagation delay (CL = 15pF) and maintains valid VIH/VIL thresholds (0.7 × VCC and 0.3 × VCC). Its input overvoltage tolerance remains active, allowing safe interfacing with 5V signals even when powered from 3.3V - a key advantage over standard 74HC02 in mixed-voltage designs using the 74VHC02MX.
74VHC02MX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74VHC
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- NOR Gate
- Number of Circuits:
- 4
- 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:
- 0.5V
- Input Logic Level - High:
- 1.5V
- Max Propagation Delay @ V, Max CL:
- 7.5ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
74VHC02MX FAQ
1.How can I place an order for 74VHC02MX through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VHC02MX 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 74VHC02MX reliable?
The price and inventory of 74VHC02MX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VHC02MX is usually 5 days.
3.What payment methods are accepted for 74VHC02MX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VHC02MX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VHC02MX?
74VHC02MX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VHC02MX 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 74VHC02MX?
For technical support, including 74VHC02MX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VHC02MX requirements.
6.How does Aetrix verify that 74VHC02MX is sourced from the original manufacturer or authorized distributors?
All 74VHC02MX 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 74VHC02MX meets industry standards.
7.What is the process for return or replacement of 74VHC02MX?
All 74VHC02MX units undergo pre-shipment inspection (PSI). If there is an issue with 74VHC02MX, 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 74VHC02MX part is unused and in its original packaging.
Return procedure for 74VHC02MX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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