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onsemi 74LCX04MX
- Part No.:
- 74LCX04MX
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
74LCX04MX.pdf
- Description:
- IC INVERTER 6CH 1-INP 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,613
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Product details
Overview
74LCX04MX from onsemi is a low-voltage hex inverter IC with 5 V tolerant inputs, designed for level-shifting between 3.3 V and 5 V logic domains in mixed-supply systems. It delivers 5.2 ns max propagation delay at VCC = 3.3 V, ±24 mA output drive at 3.0 V, and operates across 1.65–5.5 V supply range - enabling use in battery-powered portable electronics, industrial I/O interfaces, and legacy 5 V system upgrades.
For engineers reviewing the 74LCX04MX datasheet, pinout, applications, or equivalent options, key selection criteria include input voltage tolerance (up to 5.5 V), power-down high-impedance behavior, JEDEC-compliant latch-up immunity, and QFN14 package thermal resistance (130 °C/W) for thermally constrained PCB layouts.
Technical Context
The 74LCX04MX implements six independent CMOS inverters using advanced low-voltage process technology, supporting dual-rail interoperability without external level translators. Its input structure withstands 5.5 V regardless of VCC, while output stages deliver rail-to-rail swing and ±24 mA drive capability at 3.0 V - critical for driving terminated transmission lines or multiple TTL loads.
It features power-down high-impedance inputs and outputs when VCC = 0 V, enabling hot-insertion and bus isolation. Proprietary noise/EMI reduction circuitry suppresses simultaneous switching noise, verified by dynamic VOLP/VOLV measurements (±0.8 V at 3.3 V, CL = 50 pF).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65 V to 5.5 V - supports single-supply operation across 3.3 V, 2.5 V, and 1.8 V logic families while accepting 5 V inputs. |
| tPD Max | 5.2 ns at VCC = 3.3 V - enables reliable timing in 100+ MHz clock distribution or data path inversion. |
| Output Drive | ±24 mA at VCC = 3.0 V - sufficient to drive 10 LSTTL loads or 50 Ω transmission lines with controlled edge rates. |
| Input Tolerance | Up to 5.5 V independent of VCC - eliminates need for external clamping diodes when interfacing with 5 V microcontrollers or sensors. |
| Power-Down State | High-impedance I/O with VCC = 0 V - prevents back-powering and allows safe insertion into live backplanes or hot-swap modules. |
| ESD Rating | Human Body Model > 2000 V - meets industrial-grade robustness requirements without additional protection circuitry. |
| Thermal Resistance | 130 °C/W (QFN14) - enables sustained operation at +125 °C ambient in compact enclosures with minimal heatsinking. |
Pinout & Package
74LCX04MX is supplied in a leadless 14-pin DQFN package (3.0 mm × 2.5 mm, 0.5 mm pitch, case 510CB), featuring an exposed die attach pad (DAP) for enhanced thermal dissipation and mechanical stability. The DAP must be soldered to a thermal pad on the PCB for optimal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Inputs (A1–A6) | 5 V tolerant digital inputs; each drives one inverter stage; unused inputs must be tied to VCC or GND per datasheet guidance. |
| 2, 4, 6, 10, 12, 14 | Outputs (Y1–Y6) | Inverted logic outputs with rail-to-rail swing; capable of sourcing/sinking ±24 mA at 3.0 V; tri-state during power-down. |
| 7 | GND | Ground reference for all logic and power domains; must be connected to low-impedance PCB ground plane. |
| 14 | VCC | Primary supply pin; accepts 1.65–5.5 V; decoupling capacitor (0.1 µF ceramic) required within 5 mm. |
| DAP (bottom center) | Die Attach Pad | Thermally conductive metal pad; must be soldered to PCB thermal land to achieve rated 130 °C/W junction-to-ambient thermal resistance. |
Key Features
| Feature | Design Value |
|---|---|
| 5 V tolerant inputs | Enables direct connection to 5 V peripherals without level shifters - reduces BOM count and layout area in mixed-voltage systems. |
| Low propagation delay | 5.2 ns max at 3.3 V ensures sub-200 MHz signal integrity in clock buffering, address inversion, or control line conditioning. |
| High-output drive strength | ±24 mA at 3.0 V supports fan-out to multiple loads or resistive termination - avoids need for buffer amplifiers in I/O expansion designs. |
| Power-down isolation | Inputs and outputs enter high-Z state when VCC = 0 V - prevents current leakage and unintended activation during system sleep or hot-swap events. |
| Noise/EMI suppression | Proprietary circuitry limits simultaneous switching output noise (VOLP ≤ 0.8 V), easing EMC compliance in dense mixed-signal PCBs. |
Applications
| Industrial Sensor Interface | Portable Device Power Sequencing |
|---|---|
|
Use Scenario: Interfacing 5 V analog sensor outputs to a 3.3 V microcontroller ADC input via digital enable/control lines. IC Role / Device Role / Timing Role: Inverts enable signals and level-shifts control logic from MCU to sensor module, ensuring clean 5 V-compatible strobes. Use Value: Eliminates discrete level-shifter ICs; leverages 5.5 V input tolerance to accept MCU GPIO directly while operating at 3.3 V for low power. |
Use Scenario: Generating synchronized reset and enable sequences for multi-rail PMICs in smartphones or wearables. IC Role / Device Role / Timing Role: Inverts and delays power-good signals across 1.8 V, 3.3 V, and 5 V rails to meet strict sequencing timing windows. Use Value: 5.2 ns tPD ensures precise inter-rail timing alignment; ±24 mA drive handles capacitive loading of PMIC EN pins without added buffers. |
| Legacy System Bus Buffering | Automotive Body Control Module I/O |
|
Use Scenario: Upgrading 5 V ISA or parallel port logic in industrial controllers while retaining compatibility with existing peripherals. IC Role / Device Role / Timing Role: Buffers and inverts address/data strobes between legacy 5 V peripherals and modern 3.3 V host processors. Use Value: 5 V tolerant inputs accept legacy bus signals directly; high drive strength maintains signal integrity over long traces on aging PCBs. |
Use Scenario: Driving LED indicators, relay drivers, and diagnostic status lines in automotive BCMs requiring extended temperature operation. IC Role / Device Role / Timing Role: Provides logic inversion and voltage translation for microcontroller GPIOs controlling 12 V lamp drivers or CAN transceiver enables. Use Value: Rated for −40 °C to +125 °C operation; latch-up immunity exceeds JEDEC 78; ESD rating > 2000 V meets AEC-Q100 stress test thresholds. |
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 - requires external clamping for 5 V signals. | Suitable only in pure 3.3 V systems; cannot replace 74LCX04MX in mixed 5 V/3.3 V interfaces. | Select when cost is primary and all upstream signals are strictly ≤ 3.6 V; verify input protection if interfacing to 5 V sources. |
| 74AHC04PW,118 | Wider VCC range (2–5.5 V); 5 V tolerant inputs; slightly higher tPD (6.5 ns @ 3.3 V). | Compatible in most 74LCX04MX roles but lacks power-down high-Z state - may cause back-powering in hot-swap scenarios. | Choose when thermal resistance is less critical and power-down isolation is not required; confirm PCB layout accommodates larger TSSOP-14 footprint. |
Compared with SN74LVC04APWR and 74AHC04PW,118, the 74LCX04MX uniquely combines 5.5 V input tolerance, power-down high-Z, and QFN14 thermal performance - making it the only option for space-constrained, mixed-voltage, hot-pluggable designs requiring guaranteed isolation at VCC = 0 V.
Availability
74LCX04MX is available at Aetrix Electronics and suitable for industrial sensor interfaces, portable device power sequencing, legacy system bus buffering, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for 74LCX04MX 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 sensing solutions for automotive, industrial, and cloud infrastructure markets.
The 74LCX04MX belongs to the LCX low-voltage logic family, engineered for high-speed, low-power interoperability between 3 V and 5 V systems - targeting design-in longevity in industrial automation, medical instrumentation, and communications equipment.
FAQ
What is the maximum input voltage the 74LCX04MX can tolerate?
The 74LCX04MX supports DC input voltages up to 5.5 V regardless of VCC level, as confirmed in the Absolute Maximum Ratings table. This allows direct connection to 5 V logic sources while operating from a 1.65–5.5 V supply - eliminating external level-shifting components in mixed-voltage designs. The 74LCX04MX maintains this tolerance across its full operating temperature range (−40 °C to +125 °C).
Does the 74LCX04MX support power-down mode, and how does it behave?
Yes, the 74LCX04MX enters a power-down state when VCC = 0 V, placing both inputs and outputs in high-impedance mode. This behavior is explicitly documented in the Features section and DC Electrical Characteristics (IOFF parameter). It prevents back-powering of the device and enables safe hot-insertion into live backplanes - a key differentiator versus standard LVC or AHC inverters. The 74LCX04MX maintains this isolation without external control signals.
What package type is used for the 74LCX04MX, and what are its thermal characteristics?
The 74LCX04MX uses a 14-pin DQFN package (3.0 mm × 2.5 mm, 0.5 mm pitch, case 510CB) with an exposed die attach pad (DAP). Its thermal resistance is specified as 130 °C/W (junction-to-ambient), measured under JEDEC JESD51-7 conditions. To achieve this rating, the DAP must be soldered to a dedicated thermal pad on the PCB with appropriate via stitching - as detailed in the mechanical drawings on page 6 of the datasheet.
Can the 74LCX04MX drive multiple LSTTL loads, and what is its output current capability?
Yes, the 74LCX04MX delivers ±24 mA output drive at VCC = 3.0 V, which exceeds the 1.6 mA per input required for 10 LSTTL loads. This capability is validated in the DC Electrical Characteristics table under VOH/VOL tests at IOH/IOL = ±24 mA. The 74LCX04MX sustains this drive strength across −40 °C to +125 °C, making it suitable for driving terminated buses or multiple gate inputs without external buffers.
Is the 74LCX04MX RoHS compliant and lead-free?
Yes, the 74LCX04MX is Pb-free, halide-free, and RoHS compliant, as stated in the Features section and Ordering Information table. The "BQX" suffix denotes the QFN14 Pb-free variant, and the marking diagram confirms the "G" or microdot indicator for lead-free packaging. All onsemi LCX devices shipped after 2016 meet RoHS Directive 2011/65/EU requirements without exemptions.
74LCX04MX Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74LCX
- Package/Case:
- 14-SOIC (0.154", 3.90mm 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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
74LCX04MX FAQ
1.How can I place an order for 74LCX04MX through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LCX04MX 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 74LCX04MX reliable?
The price and inventory of 74LCX04MX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LCX04MX is usually 5 days.
3.What payment methods are accepted for 74LCX04MX?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LCX04MX transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LCX04MX?
74LCX04MX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LCX04MX 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 74LCX04MX?
For technical support, including 74LCX04MX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LCX04MX requirements.
6.How does Aetrix verify that 74LCX04MX is sourced from the original manufacturer or authorized distributors?
All 74LCX04MX 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 74LCX04MX meets industry standards.
7.What is the process for return or replacement of 74LCX04MX?
All 74LCX04MX units undergo pre-shipment inspection (PSI). If there is an issue with 74LCX04MX, 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 74LCX04MX part is unused and in its original packaging.
Return procedure for 74LCX04MX:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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