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onsemi 74VHC02SJX
- Part No.:
- 74VHC02SJX
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
74VHC02SJX.pdf
- Description:
- IC GATE NOR 4CH 2-INP 14SOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,820
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Product details
Overview
74VHC02SJX from onsemi is a quad 2-input NOR gate in 14-lead SOP (EIAJ TYPE II, 5.3mm wide) packaging, operating at 2.0–5.5V supply, with 3.6ns typical propagation delay at 5V and 2µA max quiescent current at 25°C. It interfaces 5V/3V mixed-supply systems and provides input protection up to 7V independent of VCC.
For engineers reviewing the 74VHC02SJX datasheet, pinout, applications, or equivalent options, key selection factors include its CMOS-compatible speed-power trade-off, noise immunity (28% VCC min), power-down input protection, low dynamic output noise (VOLP ≤ 0.8V), and compatibility with 74HC02 logic families.
Technical Context
The 74VHC02SJX implements four independent 2-input NOR gates using silicon-gate CMOS technology, achieving TTL-like speed while retaining CMOS low power. Its three-stage internal structure includes buffered outputs for enhanced noise rejection and stable switching.
Input protection circuitry allows safe application of 0–7V signals regardless of VCC level, enabling robust interfacing between mismatched supply domains (e.g., 5V logic driving 3V subsystems or battery-backed circuits). Unused inputs must be tied HIGH or LOW per design specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | 2.0V to 5.5V - supports dual-voltage system interfacing without level shifters |
| Propagation Delay | 3.6ns (typ.) at VCC = 5V, CL = 15pF - enables high-speed combinatorial logic in timing-critical paths |
| Quiescent Current | 2µA (max) at TA = 25°C - ensures ultra-low static power in battery-powered or standby modes |
| Noise Immunity | 28% VCC (min) - provides reliable operation under EMI-prone industrial environments |
| Input Voltage Range | –0.5V to +7.0V - permits overvoltage-tolerant inputs independent of supply rail |
| Output Drive | ±8mA at VCC = 4.5V - sufficient fan-out for standard CMOS/TTL loads without external buffering |
Pinout & Package
74VHC02SJX is housed in a 14-lead Small Outline Package (SOP), EIAJ TYPE II, 5.3mm wide, with gull-wing leads and lead-free finish compliant with JEDEC J-STD-020B.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 8, 9, 11, 12 | NOR Gate Inputs (A1/B1, A2/B2, A3/B3, A4/B4) | Four independent 2-input NOR logic inputs; each pair drives one gate output |
| 3, 6, 10, 13 | NOR Gate Outputs (Y1, Y2, Y3, Y4) | Active-low outputs; sink/source capability supports direct connection to downstream CMOS/TTL inputs |
| 7 | GND | Ground reference for all logic and power domains; required for proper noise margin and DC biasing |
| 14 | VCC | Positive supply rail (2.0–5.5V); powers all four gates and internal protection circuitry |
Key Features
| Feature | Design Value |
|---|---|
| High-speed CMOS architecture | 3.6ns typical tPD at 5V enables replacement of 74LS-series in legacy designs without timing penalty |
| Input overvoltage tolerance | 0–7V input range regardless of VCC allows safe hot-plug or mixed-rail interface without external clamping |
| Power-down input protection | Inputs remain protected even when VCC = 0V - prevents latch-up during power sequencing |
| Low dynamic output noise | VOLP ≤ 0.8V (CL = 50pF) reduces crosstalk and ground bounce in dense PCB layouts |
Applications
| Industrial Control Logic | Automotive Body Electronics |
|---|---|
Use Scenario: Discrete safety interlock monitoring in PLC I/O modules where redundant NOR-based voting logic detects sensor faults. IC Role / Device Role / Timing Role: Quad NOR gate implementing active-low fault detection combinatorial logic with sub-10ns response. Use Value: Enables deterministic fail-safe behavior using only one IC instead of discrete transistors or multiple SMT components. | Use Scenario: Window lift control logic in door modules requiring voltage-domain translation between 5V microcontroller and 3.3V motor driver IC. IC Role / Device Role / Timing Role: Level-shifting NOR gate providing bidirectional signal conditioning with overvoltage-safe inputs. Use Value: Eliminates need for external voltage translators while maintaining ESD robustness and EMC immunity. |
| Battery-Backed Memory Interface | Legacy System Upgrades |
Use Scenario: Power-fail detection and write-protection enable in SRAM backup circuits with dual-supply (main + coin cell) configuration. IC Role / Device Role / Timing Role: NOR gate generating chip-enable inhibit when either supply drops below threshold. Use Value: Prevents memory corruption during brown-out by leveraging input tolerance to monitor both rails simultaneously. | Use Scenario: Drop-in replacement for obsolete 74LS02 in aging test equipment where board space and pinout are fixed. IC Role / Device Role / Timing Role: Pin- and function-compatible NOR gate delivering identical logic function with lower power and higher noise margin. Use Value: Extends product lifecycle without PCB redesign or firmware changes, reducing obsolescence risk. |
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 |
|---|---|---|---|
| 74HC02D,653 (Nexperia) | Higher ICC (4µA max vs. 2µA), slightly slower tPD (6ns typ. at 4.5V), same 14-lead SO package | Less suitable for ultra-low-power battery operation but widely available in high-volume distribution | Select when cost and stock availability outweigh marginal power/speed advantages |
| SN74LVC02APWR (TI) | Wider VCC range (1.65–5.5V), lower VOL (0.55V max @ 24mA), TSSOP-14 package (4.4mm) | Better for 1.8V logic integration but requires PCB footprint change from SOP-14 | Select when interfacing with sub-2V logic families or when higher drive strength is needed |
Compared with 74HC02D and SN74LVC02APWR, the 74VHC02SJX offers the lowest quiescent current and best noise immunity in a standard 5.3mm SOP footprint - ideal for power-sensitive industrial upgrades where layout reuse is mandatory.
Availability
74VHC02SJX is available at Aetrix Electronics and suitable for industrial control logic, automotive body electronics, battery-backed memory interface, and legacy system upgrades requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for 74VHC02SJX 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 manufacturer specializing in energy-efficient power and signal management solutions for automotive, industrial, cloud, and IoT applications.
The 74VHC02SJX belongs to the VHC (Very High Speed CMOS) logic family, designed to deliver TTL-compatible speed with CMOS power efficiency for seamless migration from bipolar logic in industrial and communications infrastructure.
FAQ
What is the maximum input voltage rating for 74VHC02SJX?
The 74VHC02SJX supports DC input voltages from –0.5V to +7.0V, independent of the VCC supply level. This overvoltage tolerance enables safe interfacing with higher-voltage sensors or legacy systems without external clamping diodes. The input protection circuitry remains functional even when VCC = 0V, making 74VHC02SJX suitable for hot-swap and mixed-rail applications where supply sequencing is uncontrolled.
Is 74VHC02SJX pin-compatible with 74HC02?
Yes, 74VHC02SJX is pin and function compatible with 74HC02, sharing identical pinout, logic function, and 14-lead SOP packaging. This allows direct substitution in existing designs without PCB modification. However, 74VHC02SJX delivers faster propagation delay (3.6ns vs. ~6ns typical) and lower quiescent current (2µA vs. ~4µA), offering measurable performance and power benefits in upgraded implementations.
What is the recommended operating temperature range for 74VHC02SJX?
The 74VHC02SJX is rated for continuous operation from –40°C to +85°C, meeting industrial-grade environmental requirements. This range is validated across all electrical specifications including propagation delay, output drive, and noise immunity. Operation outside this range may result in parametric degradation or functional failure, and is not guaranteed by onsemi's characterization data.
Does 74VHC02SJX require external pull-up or pull-down resistors on unused inputs?
Unused inputs on the 74VHC02SJX must be actively held HIGH or LOW - floating inputs are prohibited per datasheet specification. While external resistors may be used, direct connection to VCC or GND is preferred to minimize leakage path uncertainty and ensure deterministic logic states. This requirement prevents increased ICC, erratic output behavior, and potential damage due to undefined input bias conditions.
Can 74VHC02SJX operate reliably at 2.0V supply voltage?
Yes, 74VHC02SJX is fully specified down to 2.0V VCC, with guaranteed VIH (1.50V min), VIL (0.50V max), and VOL (0.1V max at 50µA) at that rail. Propagation delay increases to 7.9ns (typ.) at 2.0V, but logic functionality and noise margins remain intact. This makes 74VHC02SJX suitable for low-voltage portable systems where 2.0–2.5V operation is required without sacrificing reliability.
74VHC02SJX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74VHC
- Package/Case:
- 14-SOIC (0.209", 5.30mm 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-SOP
74VHC02SJX FAQ
1.How can I place an order for 74VHC02SJX through Aetrix?
Please submit a Request for Quotation (RFQ) for 74VHC02SJX 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 74VHC02SJX reliable?
The price and inventory of 74VHC02SJX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74VHC02SJX is usually 5 days.
3.What payment methods are accepted for 74VHC02SJX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74VHC02SJX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74VHC02SJX?
74VHC02SJX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74VHC02SJX 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 74VHC02SJX?
For technical support, including 74VHC02SJX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74VHC02SJX requirements.
6.How does Aetrix verify that 74VHC02SJX is sourced from the original manufacturer or authorized distributors?
All 74VHC02SJX 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 74VHC02SJX meets industry standards.
7.What is the process for return or replacement of 74VHC02SJX?
All 74VHC02SJX units undergo pre-shipment inspection (PSI). If there is an issue with 74VHC02SJX, 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 74VHC02SJX part is unused and in its original packaging.
Return procedure for 74VHC02SJX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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