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onsemi MC74LCX02DR2G
- Part No.:
- MC74LCX02DR2G
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MC74LCX02DR2G.pdf
- Description:
- IC GATE NOR 4CH 2-INP 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,553
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Product details
Overview
MC74LCX02DR2G from onsemi is a low-voltage CMOS quad 2-input NOR gate operating from 1.65 V to 5.5 V supply, featuring 5 V-tolerant inputs, 24 mA balanced output sink/source capability at 3.0 V, near-zero static supply current (10 µA), and SOIC-14 package. It enables level-shifting logic interfacing between 3.3 V systems and legacy 5 V TTL devices in mixed-voltage digital control circuits.
For engineers reviewing the MC74LCX02DR2G datasheet, pinout, applications, or equivalent options, key selection criteria include input voltage tolerance (up to 5.5 V), propagation delay (4.2 ns max at 5 V), quiescent current (10 µA), output drive strength (±24 mA @ 3 V), and SOIC-14 thermal resistance (116 °C/W).
Technical Context
The MC74LCX02DR2G implements four independent 2-input NOR gates in a single monolithic CMOS structure with TTL-compatible input thresholds and LVTTL/LVCMOS interoperability. Its 5 V-tolerant input structure uses internal clamping diodes and high-impedance design to safely accept 5 V signals while powered from as low as 1.65 V.
Propagation delay is supply- and temperature-dependent: 4.2 ns max at VCC = 4.5–5.5 V and TA = −40°C to +125°C; output skew between gates is ≤1.0 ns under 3.0–3.6 V operation. Input leakage remains ≤±5.0 µA across full VCC and temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65 V to 5.5 V - supports direct interface between 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains |
| Input Voltage Tolerance | −0.5 V to +6.5 V - enables safe connection to 5 V TTL outputs without external level shifters |
| Output Drive Strength | ±24 mA @ 3.0 V - sufficient to drive multiple LVTTL loads or moderate PCB trace capacitance |
| Propagation Delay | 4.2 ns max @ 4.5–5.5 V - ensures timing compliance in high-speed control signal paths |
| Quiescent Supply Current | 10 µA max - minimizes standby power in battery-backed or energy-sensitive applications |
| Input Leakage Current | ±5.0 µA max @ 3.6 V - preserves signal integrity in high-impedance sensing or pull-up/pull-down networks |
| ESD Withstand Voltage | 2000 V HBM - meets industrial handling requirements without additional protection circuitry |
Pinout & Package
MC74LCX02DR2G is housed in a 14-pin SOIC-14 (Case 751A) package with standard 1.27 mm pitch, 8.55–8.75 mm body width, and 1.35–1.75 mm height. Pin 1 is index-marked; pin 7 is GND; pin 14 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 10, 13 | Outputs (O0–O3) | Active-low NOR outputs capable of sourcing/sinking ±24 mA at 3.0 V; tri-state inactive when inputs undefined |
| 2, 3, 5, 6, 8, 9, 11, 12 | Inputs (A0/B0–A3/B3) | 5 V-tolerant CMOS inputs with VIH = 0.7×VCC (min) and VIL = 0.3×VCC (max) - compatible with TTL, LVTTL, LVCMOS |
| 7 | GND | Ground reference for all logic and power domains; must be low-impedance connection to minimize noise coupling |
| 14 | VCC | Primary supply rail; decoupling capacitor (0.1 µF ceramic) required within 5 mm for stable switching performance |
Key Features
| Feature | Design Value |
|---|---|
| 5 V-tolerant inputs | Enables direct interconnection with 5 V TTL outputs without level-shifting components or risk of latch-up |
| Balanced ±24 mA output drive | Supports fan-out of ≥10 LVTTL loads at 3.0 V while maintaining VOL ≤ 0.6 V and VOH ≥ 2.2 V |
| Near-zero static ICC (10 µA) | Reduces system-level quiescent power by >95% compared to standard LS-TTL equivalents |
| Latchup immunity >100 mA | Guarantees robust operation under transient overvoltage or ESD events per JEDEC JESD78 |
| Pb-free, RoHS-compliant packaging | Meets IPC/JEDEC J-STD-020 moisture sensitivity Level 1 and UL 94 V-0 flammability rating |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
Use Scenario: Adding discrete logic-based signal conditioning and enable gating for 24 V sensor inputs routed through optocouplers into 3.3 V microcontroller GPIOs. IC Role / Device Role / Timing Role: NOR gate used as active-low enable combiner and polarity inverter for interrupt request lines. Use Value: 5 V-tolerant inputs accept optocoupler output levels directly; low ICC extends sleep-mode battery life in always-on modules. | Use Scenario: Implementing fail-safe door lock arbitration logic where two independent control signals (main ECU + backup module) must both assert LOW to unlock. IC Role / Device Role / Timing Role: Dual-input NOR gate configured as wired-OR safety interlock with sub-5 ns propagation ensuring real-time response. Use Value: 24 mA drive strength reliably switches automotive-grade LED indicators; latchup immunity prevents field failures during load dump transients. |
| Medical Infusion Pump Logic | IoT Edge Sensor Hub |
Use Scenario: Generating hardware-enforced "STOP" command when either motor overcurrent or door-open signal is asserted in infusion pump motor control path. IC Role / Device Role / Timing Role: NOR gate acting as safety-critical OR-of-NOT function with guaranteed <6 ns delay across −40°C to +125°C. Use Value: 10 µA ICC reduces thermal load in sealed enclosure; RoHS/Pb-free compliance meets IEC 60601-1 material restrictions. | Use Scenario: Consolidating wake-up event signals from multiple ultra-low-power sensors (PIR, vibration, ambient light) into a single microcontroller interrupt line. IC Role / Device Role / Timing Role: Quad NOR used for asynchronous signal combining and edge-triggered pulse generation via RC differentiation. Use Value: 1.65 V minimum VCC allows operation from coin-cell–supplied LDO; input hysteresis eliminates chatter on noisy sensor outputs. |
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 |
|---|---|---|---|
| SN74LVC02APWR | Lower max VCC (3.6 V); no 5 V input tolerance; 32 mA drive @ 3.3 V | Restricted to 3.3 V-only systems; requires external level shifters for 5 V interface | Select when operating exclusively in 3.3 V domain and higher drive strength is needed |
| 74AHC02PW,118 | Wider VCC range (2–5.5 V); 5 V tolerant; 8 mA drive @ 3.3 V; slower (7.5 ns @ 5 V) | Lower drive capability limits fan-out; suitable for low-noise, low-power signal routing only | Select when EMI reduction and ultra-low dynamic power outweigh speed and drive requirements |
Compared with SN74LVC02APWR and 74AHC02PW,118, the MC74LCX02DR2G uniquely balances 5 V input tolerance, 24 mA drive, and 4.2 ns speed in a single SOIC-14 package - making it optimal for mixed-voltage industrial control where interface flexibility and timing margin are critical.
Availability
MC74LCX02DR2G is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, medical device logic, and IoT sensor hub designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MC74LCX02DR2G 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 supplier delivering energy-efficient, high-performance silicon solutions for automotive, industrial, cloud, medical, and IoT applications.
The MC74LCX02DR2G belongs to the LCX low-voltage CMOS logic family, engineered for seamless voltage translation and interoperability across 1.65–5.5 V logic domains in space-constrained, thermally demanding embedded systems.
FAQ
What is the maximum input voltage the MC74LCX02DR2G can safely accept?
The MC74LCX02DR2G supports DC input voltages up to +6.5 V (VI rating), with guaranteed 5 V tolerance - meaning it can be driven directly from standard 5 V TTL outputs without damage or level-shifting circuitry, even when powered from as low as 1.65 V. This specification is validated per the Absolute Maximum Ratings table in the official onsemi datasheet.
Does the MC74LCX02DR2G require external pull-up or pull-down resistors on unused inputs?
Yes - the MC74LCX02DR2G datasheet explicitly states that unused inputs must not be left floating and must be tied to a defined logic level (either VCC or GND) to prevent excessive ICC increase, oscillation, or potential latchup. Floating inputs cause unpredictable current draw and degrade noise immunity; this requirement applies to all four NOR gate inputs (A0/B0 through A3/B3) on the MC74LCX02DR2G.
What is the typical propagation delay of the MC74LCX02DR2G at 3.3 V supply?
At VCC = 3.0–3.6 V and TA = −40°C to +125°C, the MC74LCX02DR2G exhibits a maximum propagation delay (tPLH/tPHL) of 5.5 ns, as specified in the AC Electrical Characteristics table. This value represents worst-case delay across temperature and voltage; typical performance is faster but design margins should use the 5.5 ns maximum for timing closure in 3.3 V systems using the MC74LCX02DR2G.
Can the MC74LCX02DR2G be used in automotive applications?
The MC74LCX02DR2G itself is not AEC-Q100 qualified; however, the pin-compatible MC74LCX02DTR2G-Q variant is automotive-qualified and PPAP-capable. For non-safety-critical automotive body electronics operating within −40°C to +125°C, the MC74LCX02DR2G may be used subject to customer qualification - but functional safety systems require the Q-suffix version. Always verify qualification status per orderable part number.
What package type does the MC74LCX02DR2G use, and is it RoHS-compliant?
The MC74LCX02DR2G uses a 14-pin SOIC-14 package (Case 751A) with Pb-free finish, marked with suffix "G" to indicate RoHS and halogen-free compliance. It meets JEDEC moisture sensitivity Level 1, UL 94 V-0 flammability rating, and is rated for reflow soldering per J-STD-020 - confirming full environmental compliance for modern electronics manufacturing using the MC74LCX02DR2G.
MC74LCX02DR2G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74LCX
- 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 ~ 3.6V
- Current - Quiescent (Max):
- 10 µA
- Current - Output High, Low:
- 24mA, 24mA
- Input Logic Level - Low:
- 0.7V ~ 0.8V
- Input Logic Level - High:
- 1.7V ~ 2V
- Max Propagation Delay @ V, Max CL:
- 5.5ns @ 3.3V, 50pF
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
MC74LCX02DR2G FAQ
1.How can I place an order for MC74LCX02DR2G through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74LCX02DR2G 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 MC74LCX02DR2G reliable?
The price and inventory of MC74LCX02DR2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74LCX02DR2G is usually 5 days.
3.What payment methods are accepted for MC74LCX02DR2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74LCX02DR2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74LCX02DR2G?
MC74LCX02DR2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74LCX02DR2G 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 MC74LCX02DR2G?
For technical support, including MC74LCX02DR2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74LCX02DR2G requirements.
6.How does Aetrix verify that MC74LCX02DR2G is sourced from the original manufacturer or authorized distributors?
All MC74LCX02DR2G 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 MC74LCX02DR2G meets industry standards.
7.What is the process for return or replacement of MC74LCX02DR2G?
All MC74LCX02DR2G units undergo pre-shipment inspection (PSI). If there is an issue with MC74LCX02DR2G, 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 MC74LCX02DR2G part is unused and in its original packaging.
Return procedure for MC74LCX02DR2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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