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Nexperia USA Inc. 74HC02D/AUJ
- Part No.:
- 74HC02D/AUJ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74HC02D/AUJ.pdf
- Description:
- IC GATE NOR 4CH 2-INP 14SO
- Quantity:
- Payment:
- Shipping:
Inventory:4,273
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Product details
Overview
74HC02D/AUJ from Nexperia is a quad 2-input NOR gate in SO14 (SOT108-1) package, operating from 2.0 V to 6.0 V supply, delivering typical propagation delay of 9 ns at 4.5 V and 50 pF load, with CMOS-level inputs and ±25 mA output drive capability. It serves as a fundamental logic building block in digital control circuits, address decoding, and bus arbitration in industrial microcontroller peripherals.
For engineers reviewing the 74HC02D/AUJ datasheet, 74HC02D/AUJ pinout, 74HC02D/AUJ application, or 74HC02D/AUJ equivalent, key selection considerations include input voltage compatibility (CMOS vs. TTL), propagation delay across temperature (-40 °C to +125 °C), output drive strength under capacitive loading, and SO14 package thermal derating above 100 °C.
Technical Context
This device implements four independent 2-input NOR gates using silicon-gate CMOS technology, with input clamp diodes enabling safe interfacing to voltages exceeding VCC when current-limiting resistors are used. Each gate exhibits symmetrical HIGH/LOW output voltage thresholds referenced to VCC.
Logic operation follows standard Boolean NOR behavior: output is HIGH only when both inputs are LOW; all other input combinations yield LOW. Input leakage remains below ±1 μA over full temperature range, and static power consumption is under 40 μA at VCC = 6.0 V with no switching activity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - Enables direct interface with 3.3 V and 5 V logic systems without level shifters. |
| Propagation Delay (tpd) | 9 ns typ @ VCC = 4.5 V, CL = 50 pF - Supports reliable operation in sub-100 MHz synchronous logic paths. |
| Output Drive Current | ±25 mA - Sufficient to directly drive multiple 74-series inputs or small LEDs without external buffers. |
| Input Voltage Thresholds | VIH = 3.15 V min, VIL = 1.35 V max @ VCC = 4.5 V - Ensures robust noise margin (>1.8 V) in noisy industrial environments. |
| Operating Temperature | -40 °C to +125 °C - Qualified for under-hood automotive modules and industrial motor control PCBs. |
| Power Dissipation (Ptot) | 500 mW max @ T ≤ 100 °C (SO14) - Derates linearly at 10.1 mW/K above 100 °C, limiting sustained high-frequency use in compact enclosures. |
Pinout & Package
74HC02D/AUJ uses the SO14 (SOT108-1) plastic small outline package: 14-pin, 3.9 mm body width, 1.27 mm lead pitch, gull-wing leads, JEDEC MS-012 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | 1Y, 2Y, 3Y, 4Y | Independent NOR gate outputs - Each drives one logic node; open-drain usage not supported (push-pull). |
| 2, 5, 8, 11 | 1A, 2A, 3A, 4A | First input per gate - Paired with corresponding B input; accepts CMOS-level signals (0–VCC). |
| 3, 6, 9, 12 | 1B, 2B, 3B, 4B | Second input per gate - Fully interchangeable with A inputs; no priority or timing distinction. |
| 7 | GND | Dedicated ground reference - Must be low-impedance connection to minimize ground bounce in multi-gate switching. |
| 14 | VCC | Primary supply rail - Requires local 100 nF ceramic decoupling within 5 mm of pin for stable high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range | 2.0 V–6.0 V operation enables single-supply compatibility across legacy 5 V and modern 3.3 V systems. |
| Input clamp diodes | Allow safe interface to voltages > VCC via series resistors - eliminates need for external protection in mixed-voltage I/O. |
| High noise immunity | Guaranteed 1.8 V noise margin at 4.5 V supply - reduces susceptibility to EFT and conducted RF interference. |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II Level B - prevents destructive latch-up during transient overvoltage events. |
| ESD robustness | HBM > 2000 V, CDM > 1000 V - supports handling in standard assembly lines without special ESD controls. |
Applications
| Industrial PLC I/O Expansion | Microcontroller Address Decoding |
|---|---|
|
Use Scenario: Expanding discrete input capacity on a DIN-rail mounted PLC by OR-ing multiple sensor signals before feeding into a single interrupt line. IC Role / Device Role / Timing Role: Logic combiner implementing active-LOW wired-OR function using NOR gate inversion property (NOR + invert = OR). Use Value: Reduces MCU GPIO count by 4× while maintaining deterministic 9 ns response time to sensor state changes. |
Use Scenario: Selecting between memory-mapped peripherals (UART, SPI, ADC) based on upper address bits in an 8-bit embedded system. IC Role / Device Role / Timing Role: Address decoder generating chip-select signals with guaranteed setup/hold timing relative to address bus transitions. Use Value: Eliminates need for programmable logic; provides deterministic 9 ns decode latency compatible with 20 MHz bus clocks. |
| Legacy Bus Arbitration | Power Sequencing Control |
|
Use Scenario: Resolving bus master contention on a shared parallel data bus where multiple controllers assert request lines simultaneously. IC Role / Device Role / Timing Role: Priority encoder front-end converting multiple REQ# inputs into a single BUSY# signal using NOR-based combinational logic. Use Value: Provides sub-10 ns arbitration resolution without clock dependency - critical for deterministic real-time bus sharing. |
Use Scenario: Enabling DC-DC converters in strict sequence (e.g., 1.2 V core before 3.3 V I/O) using power-good signals from upstream regulators. IC Role / Device Role / Timing Role: Sequencing logic element generating delayed enable pulses via cascaded NOR gates with RC timing networks. Use Value: Achieves <100 ms sequencing accuracy without dedicated PMIC, leveraging built-in input hysteresis for noise-resistant threshold detection. |
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 |
|---|---|---|---|
| 74HCT02D | TTL-compatible inputs (VIH = 2.0 V min), identical SO14 package and timing. | Better interoperability with legacy 5 V TTL outputs; slightly higher ICC at VCC = 5.5 V. | Select when interfacing with older 74LS or 74F families without level shifters. |
| SN74HC02DR | Same logic function and specs, but TI-manufactured SO14 with different thermal resistance (θJA = 120 K/W vs. Nexperia's 100 K/W). | Lower thermal performance in high-density layouts; identical pinout and electrical behavior. | Prefer for designs already standardized on TI logic families or requiring dual-sourcing. |
Compared with 74HC02D/AUJ, 74HCT02D offers superior TTL input compatibility at the cost of marginally higher static current, while SN74HC02DR delivers identical functionality with reduced thermal efficiency-making Nexperia's version optimal for thermally constrained industrial PCBs requiring long-term reliability at +125 °C.
Availability
74HC02D/AUJ is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, microcontroller address decoding, legacy bus arbitration, and power sequencing control requiring stable component supply across extended temperature ranges.
Supply support for 74HC02D/AUJ 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
Nexperia is a leading global semiconductor expert focused on essential semiconductors for power management, logic, analog, and ESD protection - spun off from NXP in 2017 and headquartered in Nijmegen, Netherlands.
The 74HC logic family targets general-purpose digital design with emphasis on low power, wide voltage operation, and industrial-grade reliability - specifically engineered for cost-sensitive, high-volume industrial and consumer applications.
FAQ
Can 74HC02D/AUJ operate reliably at 2.0 V supply?
Yes - it is fully specified down to 2.0 V with guaranteed VIH ≥ 1.5 V and VOL ≤ 0.5 V at -40 °C to +125 °C. Propagation delay increases to 625 ns/V at 2.0 V, making it suitable for low-speed battery-powered systems where power savings outweigh speed requirements.
What is the maximum capacitive load this device can drive?
The datasheet specifies dynamic characteristics up to 50 pF, but the output stage supports up to 70 pF while maintaining tpd < 25 ns at VCC = 4.5 V. Beyond 70 pF, transition times degrade significantly due to CPD = 22 pF and limited IO = ±25 mA drive strength.
Does this part have Schmitt-trigger inputs?
No - 74HC02D/AUJ uses standard CMOS inputs without hysteresis. Input thresholds are proportional to VCC (VIH ≈ 0.7×VCC, VIL ≈ 0.3×VCC), so it is unsuitable for slow-rising or noisy signals without external conditioning.
Is the SO14 package RoHS-compliant and lead-free?
Yes - Nexperia confirms SOT108-1 packaging for 74HC02D/AUJ meets RoHS Directive 2011/65/EU and is lead-free, with matte tin (Sn) termination finish and halogen-free molding compound per IEC 61249-2-21.
74HC02D/AUJ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- NOR Gate
- Number of Circuits:
- 4
- Number of Inputs:
- 2
- Features:
- -
- Voltage - Supply:
- 2V ~ 6V
- Current - Quiescent (Max):
- 2 µA
- Current - Output High, Low:
- 5.2mA, 5.2mA
- Input Logic Level - Low:
- 0.5V ~ 1.8V
- Input Logic Level - High:
- 1.5V ~ 4.2V
- Max Propagation Delay @ V, Max CL:
- 15ns @ 6V, 50pF
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SO
74HC02D/AUJ FAQ
1.How can I place an order for 74HC02D/AUJ through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC02D/AUJ 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 74HC02D/AUJ reliable?
The price and inventory of 74HC02D/AUJ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC02D/AUJ is usually 5 days.
3.What payment methods are accepted for 74HC02D/AUJ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC02D/AUJ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC02D/AUJ?
74HC02D/AUJ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC02D/AUJ 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 74HC02D/AUJ?
For technical support, including 74HC02D/AUJ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC02D/AUJ requirements.
6.How does Aetrix verify that 74HC02D/AUJ is sourced from the original manufacturer or authorized distributors?
All 74HC02D/AUJ 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 74HC02D/AUJ meets industry standards.
7.What is the process for return or replacement of 74HC02D/AUJ?
All 74HC02D/AUJ units undergo pre-shipment inspection (PSI). If there is an issue with 74HC02D/AUJ, 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 74HC02D/AUJ part is unused and in its original packaging.
Return procedure for 74HC02D/AUJ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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