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onsemi MC74LCX04MELG
- Part No.:
- MC74LCX04MELG
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
MC74LCX04MELG.pdf
- Description:
- IC INVERTER 6CH 1-INP SOEIAJ-14
- Quantity:
- Payment:
- Shipping:
Inventory:2,604
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Product details
Overview
MC74LCX04MELG from onsemi is a low-voltage CMOS hex inverter operating from 1.65 V to 5.5 V supply, featuring 5 V-tolerant inputs, 24 mA balanced output drive at 3.0 V, near-zero static supply current (10 µA), and LVTTL/LVCMOS compatibility. 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 MC74LCX04MELG datasheet, pinout, applications, or equivalent options, key selection criteria include input voltage tolerance, propagation delay (≤5.2 ns at 3.3 V), output drive strength, quiescent current, and SOIC-14/TSSOP-14 package compatibility for space-constrained industrial control boards.
Technical Context
The MC74LCX04MELG implements six independent CMOS inverter stages with high-impedance TTL-compatible inputs that reduce loading on upstream drivers, and rail-to-rail TTL-compatible outputs optimized for switching noise immunity. Its VI specification of −0.5 V to +6.5 V enables safe interfacing with 5 V logic even when VCC is as low as 1.65 V.
It operates across −40 °C to +125 °C, supports dynamic switching up to 100 MHz (implied by tPLH/tPHL ≤4.2 ns at 5 V), and exhibits low capacitive loading (CIN = 7 pF, COUT = 8 pF) for high-speed signal integrity in dense PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.65 V to 5.5 V - Enables operation across 1.8 V, 2.5 V, 3.3 V, and 5 V logic domains without level shifters. |
| Input Voltage Tolerance | −0.5 V to +6.5 V - Allows direct connection to 5 V TTL outputs while powered from lower VCC (e.g., 3.3 V). |
| Propagation Delay | ≤5.2 ns at VCC = 3.3 V - Supports >100 MHz toggle rates in clock distribution or data path inversion. |
| Output Drive | ±24 mA at VCC = 3.0 V - Sufficient to drive multiple LVTTL loads or moderate-capacitance traces without buffering. |
| Quiescent Supply Current | 10 µA max - Minimizes standby power in battery-backed or energy-sensitive embedded controllers. |
| Operating Temperature | −40 °C to +125 °C - Qualified for under-hood automotive, industrial PLC, and outdoor telecom applications. |
| ESD Rating | HBM >2000 V - Provides robust handling during manual assembly and board-level integration. |
Pinout & Package
MC74LCX04MELG is packaged in a 14-lead SOIC (Case 751A) with standard 1.27 mm pitch. Pin 1 is marked via notch or beveled corner; pin 7 is GND and pin 14 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Input (A0–A5) | High-impedance TTL-compatible logic inputs accepting 0–5.5 V; must be tied to VCC or GND if unused. |
| 2, 4, 6, 8, 10, 12 | Output (O0–O5) | Inverted logic outputs with rail-to-rail swing and ±24 mA drive capability at 3.0 V. |
| 7 | GND | Ground reference for all logic and power domains; requires low-inductance PCB connection. |
| 14 | VCC | Primary supply input (1.65–5.5 V); decoupling capacitor (0.1 µF) required adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| 5 V-tolerant inputs | Enables seamless interface between 3.3 V microcontrollers and 5 V peripheral logic without external translators. |
| 24 mA balanced output drive | Supports fan-out of ≥10 LVTTL loads or driving 50 Ω transmission lines with minimal overshoot. |
| Near-zero static ICC (10 µA) | Reduces system-level quiescent power by >99% compared to standard LS-TTL inverters. |
| Latchup immunity >100 mA | Ensures robustness against transient overvoltage events in noisy industrial environments. |
| Pb-free, RoHS-compliant packaging | Meets global environmental regulations and supports lead-free reflow soldering profiles (JEDEC J-STD-020). |
Applications
| Industrial PLC I/O Expansion | Automotive Body Control Module |
|---|---|
Use Scenario: Inverting enable signals for relay drivers and optocoupler interfaces in modular I/O racks. IC Role / Device Role / Timing Role: Signal polarity correction and voltage-level translation between 3.3 V FPGA I/O banks and 5 V field-side isolation circuitry. Use Value: Eliminates need for discrete level-shifter ICs, reducing BOM count and layout area while maintaining <5 ns timing margin. | Use Scenario: Conditioning wake-up signals from door latch sensors and mirror position switches before routing to MCU GPIOs. IC Role / Device Role / Timing Role: Input conditioning and noise filtering for low-power always-on monitoring paths in AEC-Q100 qualified modules. Use Value: Leverages −40 °C to +125 °C rating and 2000 V HBM ESD to ensure reliability in harsh cabin environments without added protection components. |
| Medical Diagnostic Equipment | Networking Switch Management |
Use Scenario: Inverting status flags from temperature and pressure sensors prior to ADC sampling in portable ultrasound units. IC Role / Device Role / Timing Role: Low-power signal inversion stage in battery-operated subsystems where standby current directly impacts runtime. Use Value: 10 µA ICC extends battery life by weeks versus legacy 74HC04, with no compromise in signal fidelity or propagation delay. | Use Scenario: Generating complementary reset and watchdog strobe signals in 1U rack-mounted Ethernet switches. IC Role / Device Role / Timing Role: Dual-purpose inverter bank providing synchronized active-low and active-high control edges for CPLD configuration and PHY initialization. Use Value: 7 pF input capacitance minimizes trace reflection on high-density backplane control nets, preserving signal integrity at 100 Mbps edge rates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC04APWR | Lower max VCC (3.6 V), no 5 V input tolerance; 24 mA drive at 3.3 V identical. | Not suitable for mixed 5 V/3.3 V interfacing; limited to pure LVCMOS-3.3 systems. | Select only when full 5 V input tolerance is unnecessary and cost is prioritized over interface flexibility. |
| 74AHC04PW,118 | Wider VCC range (2–5.5 V), but only 5.5 V tolerant when VCC = 5.5 V; higher ICC (100 µA typical). | Requires VCC = 5.5 V to tolerate 5 V inputs - incompatible with 3.3 V supply scenarios. | Choose only for 5 V-only designs where higher static current is acceptable and 5 V tolerance is conditional on supply voltage. |
Compared with SN74LVC04APWR and 74AHC04PW,118, the MC74LCX04MELG uniquely delivers guaranteed 5 V input tolerance across its entire 1.65–5.5 V supply range - enabling true mixed-voltage interoperability without supply dependency or external clamping diodes.
Availability
MC74LCX04MELG is available at Aetrix Electronics and suitable for industrial automation, automotive electronics, medical diagnostics, and networking infrastructure requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MC74LCX04MELG 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 specializing in energy-efficient power management, analog, logic, and sensor solutions for automotive, industrial, and cloud infrastructure markets.
The MC74LCX04MELG belongs to the LCX family of low-voltage, high-speed CMOS logic devices engineered for mixed-signal system interfacing where voltage translation, low power, and noise immunity are critical design requirements.
FAQ
What is the maximum input voltage the MC74LCX04MELG can safely accept?
The MC74LCX04MELG supports DC input voltages from −0.5 V to +6.5 V regardless of VCC level, enabling reliable interfacing with 5 V TTL outputs even when powered from 1.65 V to 3.3 V supplies. This 5 V-tolerant feature is explicitly guaranteed in the datasheet's Maximum Ratings and Recommended Operating Conditions tables, and does not require VCC to be set to 5 V.
Does the MC74LCX04MELG require external pull-up or pull-down resistors on unused inputs?
Yes - per the datasheet's "Recommended Operating Conditions" note, all unused inputs of the MC74LCX04MELG must be tied to a valid logic level (either VCC or GND) to prevent floating states that could cause excessive current draw, oscillation, or increased EMI. No internal termination is provided, so external connections are mandatory for reliability.
What is the typical propagation delay of the MC74LCX04MELG at 3.3 V supply?
The MC74LCX04MELG exhibits a maximum propagation delay of 5.2 ns (tPLH/tPHL) at VCC = 3.3 V and TA = −40 °C to +125 °C, as specified in the AC Electrical Characteristics table. At +25 °C, typical delay is lower - approximately 3.5 ns - supporting reliable operation in high-speed digital control loops and clock-domain crossing circuits.
Is the MC74LCX04MELG suitable for automotive applications?
Yes - the MC74LCX04MELG is AEC-Q100 qualified and PPAP capable when ordered with the "−Q" suffix (e.g., MC74LCX04DTR2G−Q). While the base MC74LCX04MELG part itself is not automotive-grade, its underlying die and process meet AEC-Q100 stress test requirements, and the MELG marking indicates Pb-free SOIC-14 packaging compatible with automotive reflow profiles.
What package type does the MC74LCX04MELG use, and what are its key mechanical dimensions?
The MC74LCX04MELG uses a 14-lead SOIC package (Case 751A) with 1.27 mm lead pitch, 8.55–8.75 mm body width, and 3.80–4.00 mm body length. Its JEDEC-standard footprint allows drop-in replacement with other SOIC-14 logic devices, and the Pb-free "G" suffix confirms compliance with RoHS and lead-free soldering requirements.
MC74LCX04MELG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74LCX
- Package/Case:
- 14-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Logic Type:
- Inverter
- Number of Circuits:
- 6
- Number of Inputs:
- 1
- 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:
- 5.2ns @ 3.3V, 50pF
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOEIAJ-14
MC74LCX04MELG FAQ
1.How can I place an order for MC74LCX04MELG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74LCX04MELG 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 MC74LCX04MELG reliable?
The price and inventory of MC74LCX04MELG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74LCX04MELG is usually 5 days.
3.What payment methods are accepted for MC74LCX04MELG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74LCX04MELG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74LCX04MELG?
MC74LCX04MELG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74LCX04MELG 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 MC74LCX04MELG?
For technical support, including MC74LCX04MELG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74LCX04MELG requirements.
6.How does Aetrix verify that MC74LCX04MELG is sourced from the original manufacturer or authorized distributors?
All MC74LCX04MELG 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 MC74LCX04MELG meets industry standards.
7.What is the process for return or replacement of MC74LCX04MELG?
All MC74LCX04MELG units undergo pre-shipment inspection (PSI). If there is an issue with MC74LCX04MELG, 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 MC74LCX04MELG part is unused and in its original packaging.
Return procedure for MC74LCX04MELG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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