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onsemi 74VHC02N
- Part No.:
- 74VHC02N
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
74VHC02N.pdf
- Description:
- IC GATE NOR 4CH 2-INP 14MDIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,238
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Product details
Overview
74VHC02N from ON Semiconductor is a quad 2-input NOR gate IC in a 14-lead PDIP 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 tolerance up to 7V - used for logic-level translation and noise-immune digital control in industrial interface circuits.
For engineers reviewing the 74VHC02N datasheet, pinout, applications, or equivalent options, key selection factors include its VCC range compatibility with 3.3V/5V mixed-supply systems, guaranteed input overvoltage tolerance, low dynamic noise (VOLP ≤ 0.8V), and pin/function compatibility with legacy 74HC02 designs.
Technical Context
The 74VHC02N implements four independent 2-input NOR gates using silicon-gate CMOS technology, with a 3-stage internal buffer architecture that enhances noise immunity and output stability. Each gate features input protection enabling safe operation with inputs up to 7V regardless of VCC level.
It supports dual-supply system interfacing (e.g., 5V logic driving 3V circuitry) and battery-backup applications due to its wide input voltage range (–0.5V to +7.0V) and rail-to-rail output swing under load, while maintaining TTL-compatible speed without bipolar power penalties.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.0V to 5.5V - enables interoperability between 3.3V and 5V logic domains |
| tPD (Typ.) | 3.6ns at VCC = 5V, CL = 15pF - delivers high-speed performance comparable to Bipolar Schottky TTL |
| ICC (Max) | 2µA at TA = 25°C - ensures ultra-low static power for battery-powered or standby-critical systems |
| Input Voltage Range | –0.5V to +7.0V - allows safe connection to higher-voltage signals without level shifters |
| Output Drive | ±8mA at VCC = 4.5V - sufficient fan-out for standard CMOS/TTL loads without external buffers |
| VNIH/VNIL | ≥28% VCC - provides robust noise margins against EMI in industrial environments |
Pinout & Package
74VHC02N is housed in a 14-lead plastic dual in-line package (PDIP), 0.300" wide, with standard through-hole mounting and JEDEC MS-001AC compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 11, 12 | Input (A1/B1/A2/B2/A3/B3/A4/B4) | Eight total inputs across four NOR gates; each pair forms one gate's inputs |
| 3, 6, 10, 13 | Output (Y1/Y2/Y3/Y4) | Four independent NOR outputs, active-low logic function per gate |
| 7 | GND | Ground reference for all logic and power domains |
| 14 | VCC | Positive supply rail; supports 2.0–5.5V operation with internal regulation tolerance |
Key Features
| Feature | Design Value |
|---|---|
| High-speed propagation | 3.6ns typical delay at 5V enables use in >100MHz clocked control paths |
| Input overvoltage tolerance | Inputs withstand –0.5V to +7.0V independent of VCC - eliminates need for external clamping in mixed-voltage interfaces |
| Power-down input protection | All inputs remain protected during VCC=0 conditions - prevents latch-up or damage during hot-insertion or partial power-down |
| Low dynamic noise | VOLP ≤ 0.8V ensures minimal ground bounce and signal integrity in dense PCB layouts |
Applications
| Industrial PLC I/O Expansion | Legacy System Logic Translation |
|---|---|
Use Scenario: Adding discrete logic functions to programmable logic controller backplanes where 5V and 3.3V subsystems coexist. IC Role / Device Role / Timing Role: Level-shifting NOR gate performing active-low enable decoding for modular I/O cards. Use Value: Input voltage tolerance up to 7V allows direct connection to 5V field sensors while powered from 3.3V rails - no external level shifters required. | Use Scenario: Retrofitting obsolete 74LS02-based control panels with modern, lower-power equivalents. IC Role / Device Role / Timing Role: Pin- and function-compatible replacement for TTL NOR logic in aging test equipment. Use Value: Matches 74HC02 pinout and logic behavior while reducing quiescent current by >99% versus original LS parts. |
| Battery-Backed Memory Interface | Noise-Resilient Sensor Signal Conditioning |
Use Scenario: Enabling write-protection logic between microcontroller and SRAM in systems with dual-supply backup schemes. IC Role / Device Role / Timing Role: NOR gate generating chip-enable signals when main VCC drops and backup battery engages. Use Value: Guaranteed operation down to 2.0V VCC and input tolerance to 7V permits reliable handoff between primary and backup supplies. | Use Scenario: Debouncing and combining outputs from multiple industrial proximity sensors subject to EMI. IC Role / Device Role / Timing Role: Noise-immune combinatorial logic stage before ADC sampling or MCU interrupt input. Use Value: 28% VCC noise immunity margin and low VOLP suppress false triggers caused by motor drive transients or RF coupling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar NOR gate logic applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74HC02N | Same pinout and logic function; slightly higher ICC (4µA max) and slower tPD (8ns typ. at 5V) | Lower speed and higher static current - suitable only where timing budget allows ≥2× delay margin | Select when cost sensitivity outweighs speed/power requirements and legacy HC stock exists |
| SN74LVC02N | 3.3V-only VCC range (1.65–3.6V); 3.5ns tPD; ±24mA drive; no 7V input tolerance | Not usable in 5V or mixed-voltage systems; requires level shifting for 5V sensor inputs | Prefer only in new 3.3V-only designs with tight timing constraints and no overvoltage exposure |
Compared with 74HC02N and SN74LVC02N, the 74VHC02N uniquely balances 5V compatibility, 7V input tolerance, sub-4ns speed, and µA-level quiescent current - making it the only choice for retrofitting or mixed-supply industrial logic where robustness and timing coexist.
Availability
74VHC02N is available at Aetrix Electronics and suitable for industrial PLC upgrades, legacy system replacements, and battery-backed memory controllers requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for 74VHC02N 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 (now onsemi) is a global semiconductor supplier specializing in energy-efficient electronics for automotive, industrial, cloud, and IoT applications.
The 74VHC02N belongs to the VHC (Very High Speed CMOS) logic family, designed specifically to deliver TTL-equivalent speed with CMOS power efficiency in industrial and mixed-voltage digital systems.
FAQ
What is the maximum input voltage the 74VHC02N can tolerate?
The 74VHC02N accepts DC input voltages from –0.5V to +7.0V regardless of VCC level, thanks to integrated input protection circuitry. This allows safe interfacing with 5V signals even when powered from 3.3V, eliminating external clamping diodes in mixed-supply designs. The 7V absolute maximum is specified in the Absolute Maximum Ratings table and applies across the full operating temperature range.
Is the 74VHC02N pin-compatible with the 74HC02N?
Yes, the 74VHC02N is pin and function compatible with the 74HC02N, sharing identical pin assignments, truth table behavior, and logic symbol. Both devices use the same 14-pin PDIP footprint and support identical connection diagrams. However, the 74VHC02N offers faster propagation delay (3.6ns vs. 8ns typical) and lower quiescent current (2µA vs. 4µA max), making it a performance-enhanced drop-in upgrade.
What is the recommended operating VCC range for the 74VHC02N?
The 74VHC02N is rated for recommended operation from 2.0V to 5.5V. Operation below 2.0V may result in undefined logic states or increased propagation delay; operation above 5.5V violates recommended conditions and risks reliability degradation. Full AC/DC specifications - including VOH, VOL, and tPD - are guaranteed only within this 2.0–5.5V window across –40°C to +85°C.
Does the 74VHC02N support hot-swap or partial power-down scenarios?
Yes, the 74VHC02N includes power-down protection on all inputs, allowing safe operation when VCC = 0V. Inputs remain protected against damage from applied signals up to ±7V even with no supply present. This feature enables use in hot-pluggable modules and systems undergoing controlled power sequencing, where certain sections may be unpowered while others remain active.
What is the output drive capability of the 74VHC02N at 5V supply?
At VCC = 4.5V, the 74VHC02N delivers a minimum output sink current (IOL) of 8mA and source current (IOH) of 8mA while maintaining VOL ≤ 0.44V and VOH ≥ 3.80V. These values meet standard CMOS and TTL fan-out requirements, supporting direct drive of up to 10 74HC-series inputs or two 74LS-series loads without buffering.
74VHC02N Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74VHC
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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:
- Through Hole
- Supplier Device Package:
- 14-MDIP
74VHC02N FAQ
1.How can I place an order for 74VHC02N through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VHC02N 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 74VHC02N reliable?
The price and inventory of 74VHC02N are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VHC02N is usually 5 days.
3.What payment methods are accepted for 74VHC02N?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VHC02N transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VHC02N?
74VHC02N orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VHC02N 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 74VHC02N?
For technical support, including 74VHC02N datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VHC02N requirements.
6.How does Aetrix verify that 74VHC02N is sourced from the original manufacturer or authorized distributors?
All 74VHC02N 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 74VHC02N meets industry standards.
7.What is the process for return or replacement of 74VHC02N?
All 74VHC02N units undergo pre-shipment inspection (PSI). If there is an issue with 74VHC02N, 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 74VHC02N part is unused and in its original packaging.
Return procedure for 74VHC02N:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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