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onsemi MC74LCX02M
- Part No.:
- MC74LCX02M
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- -
- Datasheet:
-
MC74LCX02M.pdf
- Description:
- IC GATE NOR
- Quantity:
- Payment:
- Shipping:
Inventory:9,800
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Product details
Overview
MC74LCX02M from ON Semiconductor is a low-voltage CMOS quad 2-input NOR gate operating from 2.3 V to 3.6 V supply, featuring 5 V–tolerant inputs (up to 5.5 V), 24 mA balanced output sink/source drive, near-zero static supply current (10 µA), and TTL/LVCMOS/LVTTL compatibility - used in level-shifting logic interfaces between 3.3 V and 5 V systems.
For engineers reviewing the MC74LCX02M datasheet, pinout, applications, or equivalent options, key selection considerations include input voltage tolerance, output drive strength at 2.7 V/3.3 V, propagation delay (≤6.0 ns), latchup immunity (>500 mA), and SOIC-14 package compatibility with legacy 74-series footprints.
Technical Context
The MC74LCX02M implements four independent NOR gates in a single monolithic CMOS structure, each with dual inputs (An, Bn) and one output (On). Its 5 V–tolerant input structure enables direct interfacing with legacy 5 V TTL outputs without external level shifters.
It operates within a recommended VCC range of 2.7 V to 3.6 V for full-speed logic operation, delivering guaranteed tPLH/tPHL ≤ 6.0 ns at VCC = 2.7 V and CL = 50 pF, while maintaining VIH ≥ 2.0 V and VIL ≤ 0.8 V under those conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 2.3 V to 3.6 V - supports mixed-voltage system power domains including 2.5 V and 3.3 V rails |
| Input Voltage Tolerance | –0.5 V to +5.5 V - allows safe connection to 5 V TTL outputs without clamping diodes or resistors |
| Output Drive | ±24 mA at VCC = 3.0–3.6 V - drives standard TTL loads and multiple LVTTL inputs directly |
| Quiescent ICC | 10 µA max - reduces standby power in battery-backed or low-power embedded control logic |
| Propagation Delay | ≤6.0 ns at VCC = 2.7 V, CL = 50 pF - enables use in sub-100 MHz synchronous logic paths |
| Latchup Immunity | >500 mA - meets JEDEC JESD78 Class II requirements for robustness in industrial environments |
| ESD Rating | HBM >2000 V, MM >200 V - qualifies for handling in standard assembly lines without special ESD controls |
Pinout & Package
MC74LCX02M is housed in a 14-pin plastic SOIC (EIAJ) package (Case 965), with 1.27 mm pitch, 8.65 mm × 3.91 mm body size, and gull-wing leads suitable for reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | Outputs (O0–O3) | Active-low NOR outputs; each capable of sourcing/sinking ±24 mA at 3.3 V |
| 2, 3, 5, 6, 8, 9, 11, 12 | Inputs (A0–B3) | 5 V–tolerant CMOS inputs; accept 0–5.5 V signals while powered from 2.3–3.6 V |
| 7 | GND | Ground reference for all logic and I/O; must be low-impedance for noise immunity |
| 14 | VCC | Positive supply rail; decoupling capacitor (0.1 µF) required within 5 mm of pin |
Key Features
| Feature | Design Value |
|---|---|
| 5 V–tolerant inputs | Enables seamless interface with legacy 5 V TTL outputs without external level translators |
| 24 mA balanced output drive | Drives up to 10 LVTTL loads or 2 standard TTL inputs at 3.3 V without buffering |
| 10 µA quiescent current | Reduces total system standby power in always-on control logic and IoT edge nodes |
| SOIC-14 footprint compatibility | Direct replacement for 74HC02, 74HCT02, and 74LVX02 in existing PCB layouts |
| High latchup immunity (>500 mA) | Ensures reliable operation in noisy industrial environments with transient coupling |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
Use Scenario: Adding discrete logic-based signal conditioning and enable gating for digital sensor inputs in modular PLC backplanes. IC Role / Device Role / Timing Role: Quad NOR gate performing active-low enable decoding and bus arbitration logic. Use Value: 5 V–tolerant inputs accept legacy 5 V sensor outputs; 24 mA drive ensures clean edges into long trace runs on DIN-rail-mounted boards. | Use Scenario: Implementing door lock/unlock state logic and mirror position validation in centralized body controllers. IC Role / Device Role / Timing Role: Level-shifting combinatorial logic block translating 5 V microcontroller GPIOs to 3.3 V domain for MCU peripherals. Use Value: Eliminates need for discrete MOSFET translators; 10 µA ICC extends battery life during vehicle sleep mode. |
| Medical Patient Monitor Interface | Consumer Set-Top Box Power Sequencing |
Use Scenario: Glue logic for synchronizing alarm trigger signals across isolated 5 V analog front-end and 3.3 V digital processing subsystems. IC Role / Device Role / Timing Role: NOR-based enable/disable gating for ADC sampling clocks and interrupt request lines. Use Value: Sub-6 ns propagation delay preserves timing margins in real-time vital sign acquisition paths. | Use Scenario: Controlling power-up sequence of HDMI PHY, tuner, and SoC reset lines using pushbutton-generated pulses. IC Role / Device Role / Timing Role: Debounced logic gate generating synchronized reset asserts and power-good handshakes. Use Value: SOIC-14 package fits tight layout constraints; latchup immunity prevents field failures due to ESD events during consumer handling. |
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 |
|---|---|---|---|
| SN74LVC02APW | 3.3 V only (1.65–3.6 V), no 5 V–tolerant inputs (VI max = VCC + 0.5 V) | Requires external level shifters when interfacing with 5 V sources | Select when system is fully 3.3 V and cost is primary; avoid if 5 V legacy interface needed |
| 74LCX02M | Same die, identical specs - ON Semiconductor rebranded part number for same device | No functional difference; identical pinout, timing, and electrical behavior | Valid drop-in alternative with identical sourcing and qualification status |
Compared with SN74LVC02APW and 74LCX02M, the MC74LCX02M uniquely supports direct 5 V input interfacing without redesign, while offering identical SOIC-14 packaging and 24 mA drive - making it optimal for brownfield upgrades where legacy signal levels persist.
Availability
MC74LCX02M is available at Aetrix Electronics and suitable for industrial PLC I/O expansion, automotive body control modules, medical patient monitor interfaces, and consumer set-top box power sequencing requiring stable component supply and long-term lifecycle support.
Supply support for MC74LCX02M 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 management, analog, logic, and sensor solutions for automotive, industrial, and communications markets.
The MC74LCX02M belongs to the LCX low-voltage CMOS logic family, designed specifically for high-speed, low-power interoperability between 3.3 V and 5 V logic domains in space-constrained embedded systems.
FAQ
What is the maximum input voltage the MC74LCX02M can safely accept?
The MC74LCX02M supports DC input voltages from –0.5 V to +5.5 V, enabling direct connection to 5 V TTL outputs without damage or external protection circuitry. This 5 V–tolerance is maintained regardless of VCC level (2.3–3.6 V), and is verified per absolute maximum ratings in the official ON Semiconductor datasheet (Publication Order Number: MC74LCX02/D).
Does the MC74LCX02M support operation at 2.5 V supply?
Yes, the MC74LCX02M is fully specified for operation from 2.3 V to 3.6 V, including 2.5 V nominal rails. At VCC = 2.5 V, it maintains valid VIH/VIL thresholds (tested per recommended conditions), delivers ≥12 mA output drive, and achieves typical propagation delay <7.5 ns - making it suitable for 2.5 V system domains with appropriate derating.
Is the MC74LCX02M pin-compatible with standard 74-series NOR gates?
Yes, the MC74LCX02M uses a standard 14-pin SOIC package with identical pinout to 74HC02, 74HCT02, and 74LVX02. Pin 1 is O0, pins 2–3 are A0/B0, pin 4 is O1, etc., matching industry-standard quad 2-input NOR gate layouts - enabling drop-in replacement in existing designs without PCB modification.
What is the output drive capability of the MC74LCX02M at 3.3 V?
At VCC = 3.3 V, the MC74LCX02M provides ±24 mA output drive (IOL = +24 mA, IOH = –24 mA) under DC conditions, meeting or exceeding standard TTL fan-out requirements. This allows direct driving of up to two 74LS inputs or ten LVTTL loads while maintaining VOL ≤ 0.55 V and VOH ≥ 2.2 V.
How does the MC74LCX02M handle ESD and latchup events?
The MC74LCX02M features >2000 V HBM and >200 V MM ESD ratings, plus latchup immunity exceeding 500 mA per JEDEC JESD78. These characteristics are process-hardened and tested - ensuring robustness in automated assembly, field service, and electrically noisy industrial environments where the MC74LCX02M is deployed.
MC74LCX02M Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Logic Type:
- -
- Number of Circuits:
- -
- Number of Inputs:
- -
- Features:
- -
- Voltage - Supply:
- -
- Current - Quiescent (Max):
- -
- Current - Output High, Low:
- -
- Input Logic Level - Low:
- -
- Input Logic Level - High:
- -
- Max Propagation Delay @ V, Max CL:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
MC74LCX02M FAQ
1.How can I place an order for MC74LCX02M through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74LCX02M 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 MC74LCX02M reliable?
The price and inventory of MC74LCX02M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74LCX02M is usually 5 days.
3.What payment methods are accepted for MC74LCX02M?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74LCX02M transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74LCX02M?
MC74LCX02M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74LCX02M 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 MC74LCX02M?
For technical support, including MC74LCX02M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74LCX02M requirements.
6.How does Aetrix verify that MC74LCX02M is sourced from the original manufacturer or authorized distributors?
All MC74LCX02M 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 MC74LCX02M meets industry standards.
7.What is the process for return or replacement of MC74LCX02M?
All MC74LCX02M units undergo pre-shipment inspection (PSI). If there is an issue with MC74LCX02M, 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 MC74LCX02M part is unused and in its original packaging.
Return procedure for MC74LCX02M:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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