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onsemi MC74ACT04MELG
- Part No.:
- MC74ACT04MELG
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- -
- Datasheet:
-
MC74ACT04MELG.pdf
- Description:
- IC INVERTER
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
MC74ACT04MELG from onsemi is a hex inverter logic IC with TTL-compatible inputs, 24 mA output drive capability per channel, and operation over −40°C to +85°C ambient temperature at 4.5 V to 5.5 V supply. It performs digital signal inversion in bus buffering, level translation, and clock conditioning circuits within industrial control and instrumentation systems.
For engineers reviewing the MC74ACT04MELG datasheet, pinout, applications, or equivalent options, key selection considerations include its 5.0 V nominal supply compatibility, guaranteed 8.5 ns max propagation delay (tPLH/tPHL), ±24 mA output current, SOEIAJ−14 package footprint, and Pb−free construction per JEDEC J-STD-020.
Technical Context
The MC74ACT04MELG implements six independent CMOS inverter gates in a single monolithic die. Each gate features buffered outputs with symmetrical sourcing and sinking capability, enabling robust fanout into capacitive loads up to 50 pF.
Its TTL-compatible input thresholds (VIH = 2.0 V min, VIL = 0.8 V max at VCC = 4.5–5.5 V) allow direct interfacing with legacy 5 V TTL logic families without level-shifting circuitry, while maintaining low ICC quiescent current (≤40 µA).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 4.5 V to 5.5 V - Ensures stable operation across standard 5 V rail tolerances and brown-out immunity. |
| Propagation Delay (tPLH/tPHL) | Max 9.0 ns at VCC = 5.0 V, CL = 50 pF - Supports high-speed digital timing in ≤100 MHz clock domains. |
| Output Drive (IOL/IOH) | ±24 mA per channel - Enables direct driving of multiple 74-series inputs or small LEDs without external buffers. |
| Input Thresholds | VIH ≥ 2.0 V, VIL ≤ 0.8 V at 5 V - Guarantees reliable recognition of TTL-level signals without external biasing. |
| Operating Temperature | −40°C to +85°C - Qualified for use in industrial environments including motor drives and PLC I/O modules. |
| Input Leakage Current | ±1.0 µA max - Minimizes loading on high-impedance source nodes such as microcontroller GPIOs or sensor outputs. |
Pinout & Package
MC74ACT04MELG is housed in a 14-lead SOEIAJ (Small Outline Package, Japanese standard) with gull-wing leads, case 965, body size 10.2 mm × 5.3 mm × 1.7 mm, and Pb−free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Input (A1–A6) | Independent logic inputs accepting TTL-compatible voltage levels; each controls one inverter stage. |
| 2, 4, 6, 8, 10, 12 | Output (Y1–Y6) | Inverted logic outputs with full rail-to-rail swing and ±24 mA drive strength per pin. |
| 7 | GND | Ground reference for all internal circuitry and I/O; must be connected to system common ground plane. |
| 14 | VCC | Positive supply terminal; requires local 0.1 µF ceramic decoupling capacitor placed within 5 mm of this pin. |
Key Features
| Feature | Design Value |
|---|---|
| TTL-Compatible Inputs | Enables plug-in replacement of 74LS04 in legacy 5 V systems without redesigning input interface networks. |
| 24 mA Output Drive | Supports fanout of ≥10 LS-TTL loads or direct connection to optocoupler LEDs without series resistors. |
| Pb−Free Construction | Meets RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 3 (MSL3) requirements. |
| Low Propagation Skew | Typical tPLH–tPHL mismatch < 0.5 ns ensures precise phase alignment across all six inverters in timing-critical paths. |
Applications
| Industrial Bus Buffering | Digital Level Translation |
|---|---|
|
Use Scenario: Isolating and regenerating noisy RS-485 or CAN bus control signals in programmable logic controller (PLC) backplanes. IC Role / Device Role / Timing Role: Signal conditioner and noise filter via Schmitt-trigger-free inversion with controlled edge rates. Use Value: Prevents metastability in downstream FPGA clock enables by delivering clean, rail-aligned inverted enable pulses with sub-10 ns delay consistency. |
Use Scenario: Interfacing 3.3 V microcontroller GPIOs to 5 V peripheral address/data buses in embedded test equipment. IC Role / Device Role / Timing Role: Unidirectional level shifter converting low-voltage logic highs to full 5 V swing for legacy peripherals. Use Value: Eliminates need for discrete MOSFET translators or resistor-divider networks while preserving signal integrity and timing margins. |
| Microcontroller Clock Conditioning | LED Driver Interface |
|
Use Scenario: Inverting and distributing MCU-generated clock signals to multiple synchronous peripherals in factory automation controllers. IC Role / Device Role / Timing Role: Low-skew clock buffer providing six identical inverted copies with matched propagation delays. Use Value: Reduces clock skew between parallel ADCs or DACs to < 1 ns, improving effective sampling resolution in multi-channel data acquisition. |
Use Scenario: Driving status indicator LEDs directly from microcontroller I/O pins in medical diagnostic devices requiring visual feedback. IC Role / Device Role / Timing Role: High-current inverter acting as active-low LED sink driver with built-in current limiting. Use Value: Allows direct connection of common-anode LEDs without external current-limiting resistors when VCC = 5 V and forward voltage ≤ 2.0 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74ACT04DR | SOIC−14 package (case 751A); identical AC/DC specs but 1.75 mm height vs. SOEIAJ's 1.7 mm; same pinout. | Preferred where board space allows wider SOIC footprint and standard JEDEC tape-and-reel logistics are required. | Select SN74ACT04DR when using automated placement equipment calibrated for SOIC−14 reels and no MSL3 reflow constraints apply. |
| 74VHC04M | Higher VIH (3.5 V min at 5 V), lower IOL (8 mA), and 3.0–5.5 V supply range - not TTL-compatible. | Suitable only for pure CMOS systems; cannot replace MC74ACT04MELG in mixed TTL/CMOS designs without input biasing. | Choose 74VHC04M only in new 3.3/5 V hybrid designs where input threshold compatibility is verified and drive strength requirements are relaxed. |
Compared with SN74ACT04DR and 74VHC04M, the MC74ACT04MELG uniquely combines SOEIAJ−14 compactness, guaranteed TTL input compatibility, and 24 mA drive in a Pb−free MSL3 package - making it optimal for space-constrained industrial PCBs requiring drop-in legacy interoperability.
Availability
MC74ACT04MELG is available at Aetrix Electronics and suitable for industrial control, factory automation, and embedded instrumentation requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MC74ACT04MELG 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 MC74ACT04MELG belongs to the 74ACT logic family, designed specifically for high-speed, low-power 5 V digital systems requiring TTL compatibility and robust noise immunity in harsh operating environments.
FAQ
What is the maximum operating junction temperature for MC74ACT04MELG?
The MC74ACT04MELG has a maximum junction temperature of +140°C under continuous operation. This rating applies to the PDIP package variant; for the SOEIAJ−14 package used in MC74ACT04MELG, thermal resistance (θJA) is approximately 120°C/W, so sustained power dissipation above 150 mW in still air requires thermal design consideration. The device remains functional within its specified −40°C to +85°C ambient range.
Does MC74ACT04MELG support mixed-voltage operation between 3.3 V and 5 V logic domains?
No, MC74ACT04MELG is rated for 4.5 V to 5.5 V supply only and does not support 3.3 V operation. Its input thresholds are optimized for TTL compatibility at 5 V, and operation below 4.5 V violates the recommended operating conditions. For 3.3 V systems, consider the 74LVC04 or 74AUP04 families instead of MC74ACT04MELG.
Can MC74ACT04MELG drive a 50 pF capacitive load while maintaining its specified propagation delay?
Yes, MC74ACT04MELG's AC characteristics are explicitly characterized at CL = 50 pF, with tPLH/tPHL guaranteed ≤ 9.0 ns at VCC = 5.0 V and TA = −40°C to +85°C. This makes MC74ACT04MELG suitable for driving typical PCB traces, unterminated transmission lines, and input capacitance of downstream logic devices without added delay uncertainty.
Is MC74ACT04MELG pin-compatible with the older MC74AC04 series?
Yes, MC74ACT04MELG shares identical pinout and package dimensions with MC74AC04MELG and all other 14-lead variants in the 74AC/74ACT family. However, MC74ACT04MELG features TTL-compatible inputs (VIH/VIL thresholds), whereas MC74AC04 uses CMOS thresholds - meaning direct substitution may require verification of source logic family compatibility.
What is the moisture sensitivity level (MSL) rating for MC74ACT04MELG?
MC74ACT04MELG is rated MSL3 per JEDEC J-STD-020, with a floor life of 168 hours at ≤30°C/60% RH. This requires baking before reflow if exposed beyond that window, and adherence to standard Pb−free reflow profiles (peak 260°C, 20–40 sec above 217°C). The "G" suffix confirms Pb−free construction and MSL3 compliance.
MC74ACT04MELG 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:
- -
MC74ACT04MELG FAQ
1.How can I place an order for MC74ACT04MELG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74ACT04MELG 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 MC74ACT04MELG reliable?
The price and inventory of MC74ACT04MELG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74ACT04MELG is usually 5 days.
3.What payment methods are accepted for MC74ACT04MELG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74ACT04MELG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74ACT04MELG?
MC74ACT04MELG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74ACT04MELG 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 MC74ACT04MELG?
For technical support, including MC74ACT04MELG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74ACT04MELG requirements.
6.How does Aetrix verify that MC74ACT04MELG is sourced from the original manufacturer or authorized distributors?
All MC74ACT04MELG 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 MC74ACT04MELG meets industry standards.
7.What is the process for return or replacement of MC74ACT04MELG?
All MC74ACT04MELG units undergo pre-shipment inspection (PSI). If there is an issue with MC74ACT04MELG, 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 MC74ACT04MELG part is unused and in its original packaging.
Return procedure for MC74ACT04MELG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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