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Nexperia USA Inc. 74HC02BZZ
- Part No.:
- 74HC02BZZ
- Manufacturer:
- Nexperia USA Inc.
- Category:
- Gates and Inverters
- Package:
- 14-XFQFN Exposed Pad
- Datasheet:
-
74HC02BZZ.pdf
- Description:
- IC GATE NOR 4CH 2-INP 14DHXQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
74HC02BZZ from Nexperia is a quad 2-input NOR gate IC in DHXQFN14 (SOT8014-1) package, operating from 2.0 V to 6.0 V supply, delivering propagation delay as low as 7 ns at VCC = 6.0 V and CL = 50 pF, with CMOS-level input compatibility and ±25 mA output drive capability. It serves as a fundamental logic building block in digital control subsystems, such as address decoding in microcontroller peripheral interfaces.
For engineers reviewing the 74HC02BZZ datasheet, 74HC02BZZ pinout, 74HC02BZZ application, or 74HC02BZZ equivalent, this page delivers verified functional identity, validated pin mapping for SOT8014-1, confirmed static/dynamic electrical behavior across -40 °C to +125 °C, and real-world substitution guidance grounded in JEDEC-compliant specifications.
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 used with current-limiting resistors. Each gate exhibits rail-to-rail output swing and symmetrical HIGH/LOW output voltage thresholds defined per VCC level.
It operates within two distinct logic families: 74HC02BZZ uses CMOS-compatible input thresholds (VIH ≥ 0.7×VCC, VIL ≤ 0.3×VCC), while its 74HCT02BZZ counterpart accepts TTL-level inputs (VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 4.5–5.5 V). Both share identical pinout, package, and temperature range (-40 °C to +125 °C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Quad 2-input NOR - provides four independent Boolean OR-NOT operations in one package |
| Supply Voltage Range | 2.0 V to 6.0 V - supports mixed-voltage system integration including 3.3 V and 5 V domains |
| Propagation Delay (tpd) | 7 ns (typ) at VCC = 6.0 V, CL = 50 pF - enables reliable operation in sub-100 MHz synchronous logic paths |
| Output Drive | ±25 mA - sufficient to directly drive LED indicators, small MOSFET gates, or fan-out to ≥10 74HC loads |
| Input Clamp Diodes | Integrated - allows safe interface to signals up to VCC + 0.5 V using external series resistors |
| ESD Protection | HBM > 2000 V, CDM > 1000 V - meets industrial-grade robustness requirements without external protection |
| Operating Temperature | -40 °C to +125 °C - qualified for extended industrial and under-hood embedded applications |
Pinout & Package
DHXQFN14 (SOT8014-1) package: leadless, 2 mm × 2 mm × 0.48 mm body, 0.4 mm pitch, 14 terminals, thermal pad (non-soldered or GND-connected), no mechanical leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference (0 V); terminal 1 index area marked on top surface |
| 2 | 1A | First gate input A - active-low logic input for Gate 1 |
| 3 | 1B | First gate input B - second active-low logic input for Gate 1 |
| 4 | 2Y | Second gate output Y - active-low output of Gate 2 (NOR result of 2A and 2B) |
| 5 | 2A | Second gate input A - active-low logic input for Gate 2 |
| 6 | 2B | Second gate input B - second active-low logic input for Gate 2 |
| 7 | 3Y | Third gate output Y - active-low output of Gate 3 (NOR result of 3A and 3B) |
| 8 | 3A | Third gate input A - active-low logic input for Gate 3 |
| 9 | 3B | Third gate input B - second active-low logic input for Gate 3 |
| 10 | 4Y | Fourth gate output Y - active-low output of Gate 4 (NOR result of 4A and 4B) |
| 11 | 4A | Fourth gate input A - active-low logic input for Gate 4 |
| 12 | 4B | Fourth gate input B - second active-low logic input for Gate 4 |
| 13 | VCC | Positive supply rail - must be decoupled locally with 100 nF ceramic capacitor |
| 14 | 1Y | First gate output Y - active-low output of Gate 1 (NOR result of 1A and 1B) |
Key Features
| Feature | Design Value |
|---|---|
| Wide supply range | 2.0 V to 6.0 V operation - eliminates need for level shifters in multi-rail systems |
| Latch-up immunity | Exceeds 100 mA per JESD78 Class II Level B - ensures robustness against transient-induced latch-up |
| Input clamping | Integrated diodes allow overvoltage-tolerant interfacing up to VCC + 0.5 V with resistor limiting |
| Low dynamic power | CPD = 22 pF - enables ultra-low switching power in battery-powered logic sequencing |
| Thermal enhancement | DHXQFN14 package with exposed thermal pad - improves power dissipation margin in compact layouts |
Applications
| Microcontroller Address Decoding | Industrial Sensor Signal Conditioning |
|---|---|
|
Use Scenario: Isolating memory-mapped I/O peripherals by combining chip-select and address bits. IC Role / Device Role / Timing Role: Logic-level combinatorial gate performing address-space partitioning with sub-10 ns timing margin. Use Value: Eliminates need for discrete transistor-based decoding; reduces PCB area and component count versus discrete solutions. |
Use Scenario: Converting dual-channel analog comparator outputs into a single fault-alert signal. IC Role / Device Role / Timing Role: Active-low NOR gate generating immediate hardware interrupt on any sensor over-threshold condition. Use Value: Provides deterministic, zero-software-latency response to critical sensor events without MCU intervention. |
| Power Sequencing Control | Legacy Bus Interface Logic |
|
Use Scenario: Enabling DC-DC converter enable lines only when all upstream rails are stable. IC Role / Device Role / Timing Role: Combinatorial gate verifying multiple power-good signals before asserting downstream enable. Use Value: Ensures strict power-up sequence compliance; prevents latch-up or brownout in multi-rail SoC systems. |
Use Scenario: Adapting 5 V TTL bus signals to 3.3 V microcontroller GPIOs in legacy instrumentation. IC Role / Device Role / Timing Role: Level-shifting logic element translating between incompatible voltage thresholds via pull-up configuration. Use Value: Enables drop-in interoperability between legacy 5 V peripherals and modern low-voltage controllers. |
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 |
|---|---|---|---|
| 74HC02PW | TSSOP14 (SOT402-1) package; 4.4 mm body width; 0.65 mm pitch; higher thermal resistance than DHXQFN14 | Better hand-solderability; lower density; less suitable for space-constrained portable designs | Select when board assembly uses standard reflow profiles optimized for TSSOP, not QFN. |
| SN74LVC02APWR | Texas Instruments part; 1.65–5.5 V supply; LVTTL-compatible; 32 mA drive; different pinout (SOIC-14) | Higher speed at 3.3 V (tpd ≈ 4.5 ns); requires layout redesign due to SOIC-14 footprint mismatch | Select only if system requires <5 ns propagation delay at 3.3 V and SOIC-14 is acceptable. |
Compared with 74HC02PW, the 74HC02BZZ offers 35 % smaller footprint and superior thermal performance; compared with SN74LVC02APWR, it trades 2.5 ns speed for broader voltage range, pinout compatibility across Nexperia's 74HC family, and guaranteed 125 °C operation.
Availability
74HC02BZZ is available at Aetrix Electronics and suitable for industrial control panels, automotive body electronics, and medical diagnostic equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74HC02BZZ 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 global semiconductor expert focused on high-volume, high-reliability logic, analog, and discrete components, with leadership in automotive-qualified and industrial-grade standard products.
The 74HC logic family is engineered for robust, low-power digital interfacing in industrial, consumer, and computing applications - emphasizing noise immunity, wide supply tolerance, and long-term parametric stability.
FAQ
Can 74HC02BZZ operate reliably at 2.0 V supply?
Yes. The datasheet specifies full functionality down to 2.0 V, with VIH ≥ 1.5 V and VIL ≤ 0.5 V at that voltage, and tpd ≤ 90 ns (max) under 50 pF load. This enables direct use in 2.0 V–2.7 V battery-powered systems without voltage translation.
Is the thermal pad on SOT8014-1 required to be soldered to ground?
No. Per Nexperia's datasheet note, the exposed thermal pad (terminal 1) has no electrical or mechanical requirement to be soldered. If connected, it must remain floating or tied to GND - never left unconnected and floating in high-noise environments.
What is the maximum output current per pin, and how is it tested?
The absolute maximum output current is ±25 mA per output pin, verified under conditions where VO remains within 0.1 V of rail (VOL ≤ 0.4 V at IO = 5.2 mA, VOH ≥ 3.7 V at IO = −4.0 mA). Continuous DC current above ±20 mA requires derated ambient temperature per thermal limits.
Does 74HC02BZZ support mixed-voltage interfacing, e.g., 5 V inputs with 3.3 V supply?
No. With VCC = 3.3 V, VIH(min) = 2.31 V (0.7×VCC) and VIL(max) = 0.99 V (0.3×VCC). A 5 V input exceeds VIH(max) and risks damaging the input stage unless limited by an external series resistor and clamped by internal diodes - not recommended for sustained operation.
74HC02BZZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Nexperia USA Inc.
- Series:
- 74HC
- Package/Case:
- 14-XFQFN Exposed Pad
- 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:
- 1.2V ~ 3.2V
- 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-DHXQFN (2x2)
74HC02BZZ FAQ
1.How can I place an order for 74HC02BZZ through Aetrix?
Please submit a Request for Quotation (RFQ) for 74HC02BZZ 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 74HC02BZZ reliable?
The price and inventory of 74HC02BZZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74HC02BZZ is usually 5 days.
3.What payment methods are accepted for 74HC02BZZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74HC02BZZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74HC02BZZ?
74HC02BZZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74HC02BZZ 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 74HC02BZZ?
For technical support, including 74HC02BZZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74HC02BZZ requirements.
6.How does Aetrix verify that 74HC02BZZ is sourced from the original manufacturer or authorized distributors?
All 74HC02BZZ 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 74HC02BZZ meets industry standards.
7.What is the process for return or replacement of 74HC02BZZ?
All 74HC02BZZ units undergo pre-shipment inspection (PSI). If there is an issue with 74HC02BZZ, 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 74HC02BZZ part is unused and in its original packaging.
Return procedure for 74HC02BZZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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