My Inquiry
My Account
onsemi MC74AC04MELG
- Part No.:
- MC74AC04MELG
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- 14-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
MC74AC04MELG.pdf
- Description:
- IC INVERTER 6CH 1IN SOEIAJ-14
- Quantity:
- Payment:
- Shipping:
Inventory:2,556
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MC74AC04MELG from onsemi is a high-performance silicon-gate CMOS hex inverter IC operating across 2.0–6.0 V supply, delivering ±24 mA output drive per channel with 4.0 ns typical propagation delay (VCC = 5.0 V, CL = 50 pF), and designed for logic-level signal inversion in digital control, interface buffering, and clock conditioning circuits.
For engineers reviewing the MC74AC04MELG datasheet, pinout, applications, or equivalent options, this device supports robust noise immunity (VIH/VIL thresholds tightly specified at 2.1 V/0.9 V @ 3.0 V), low quiescent ICC (≤40 µA), and Pb-free SOIC-14 packaging compliant with industrial temperature range (−40°C to +85°C).
Technical Context
The MC74AC04MELG implements six independent CMOS inverter gates in a single monolithic die, each featuring symmetrical push-pull output stages capable of sourcing and sinking up to 24 mA. Its input structure is optimized for high noise margin, with VIH ≥ 2.1 V and VIL ≤ 0.9 V at VCC = 3.0 V, ensuring reliable switching under marginal logic conditions.
It operates without TTL-compatible input thresholds-unlike the MC74ACT04 variant-and is characterized for full DC and AC performance across 2.0–6.0 V, including propagation delays as low as 4.0 ns (tPLH/tPHL, VCC = 5.0 V), making it suitable for medium-speed digital systems where power efficiency and voltage flexibility are prioritized over TTL interfacing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.0 V to 6.0 V - Enables direct interface with 3.3 V and 5 V logic families without level shifters |
| Output Drive Strength | ±24 mA per gate - Sufficient to drive multiple standard CMOS inputs or small capacitive loads (≤50 pF) |
| Propagation Delay | 4.0 ns typical (5.0 V, 50 pF) - Supports operation up to ~100 MHz toggle frequency in non-critical timing paths |
| Input Thresholds | VIH = 2.1 V, VIL = 0.9 V @ 3.0 V - Provides >1.2 V noise margin for 3.3 V systems |
| Quiescent Supply Current | ≤40 µA max - Ensures ultra-low static power in battery-backed or always-on logic monitoring circuits |
| Operating Temperature | −40°C to +85°C - Qualified for industrial-grade embedded control and automation environments |
| ESD Withstand | >2000 V HBM - Reduces risk of handling damage during PCB assembly and rework |
Pinout & Package
MC74AC04MELG is packaged in a Pb-free SOIC-14 (Case 751A) surface-mount package measuring 8.75 mm × 3.90 mm × 1.75 mm, with 1.27 mm pitch and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverter Input A | Logic input for first inverter stage; accepts CMOS-level signals (0–VCC) |
| 2 | Inverter Output A | Complementary inverted output; drives downstream logic or capacitive loads |
| 3 | Inverter Input B | Input for second inverter; electrically isolated from other channels |
| 4 | Inverter Output B | Output for second inverter; identical electrical characteristics to Pin 2 |
| 5 | Inverter Input C | Third inverter input; no internal connection to other inputs |
| 6 | Inverter Output C | Third inverter output; supports same drive and timing specs as Pins 2/4 |
| 7 | GND | Ground reference for all inputs, outputs, and internal circuitry; must be low-impedance |
| 8 | Inverter Input D | Fourth inverter input; shares no internal nodes with other inputs |
| 9 | Inverter Output D | Fourth inverter output; fully buffered and rail-to-rail capable |
| 10 | Inverter Input E | Fifth inverter input; independent CMOS input stage |
| 11 | Inverter Output E | Fifth inverter output; maintains VOH ≥ 2.9 V / VOL ≤ 0.1 V @ 3.0 V |
| 12 | Inverter Input F | Sixth and final inverter input; no shared substrate or biasing |
| 13 | Inverter Output F | Final output; meets full AC/DC specs across temperature and voltage range |
| 14 | VCC | Positive supply rail; decoupling capacitor (0.1 µF) required within 5 mm of this pin |
Key Features
| Feature | Design Value |
|---|---|
| Hex inverter functionality | Six independent, unbuffered CMOS inverters in one SOIC-14 package-reduces board space vs. discrete gate solutions |
| High-output current drive | ±24 mA per output enables direct driving of LEDs, small relays, or multiple fan-out loads without external buffers |
| Wide supply voltage range | 2.0–6.0 V operation allows use across legacy 5 V, modern 3.3 V, and mixed-voltage system domains |
| Low dynamic power consumption | CPD = 30 pF ensures minimal switching power (P = CPD × V² × f), critical for thermally constrained designs |
| Pb-free SOIC-14 packaging | RoHS-compliant, JEDEC-standard footprint simplifies procurement, assembly, and long-term supply continuity |
Applications
| Industrial Control Logic | Digital Interface Buffering |
|---|---|
Use Scenario: Inverting enable/disable signals for PLC I/O modules and sensor interface circuits. IC Role / Device Role / Timing Role: Signal polarity correction and fan-out amplification for microcontroller GPIO lines. Use Value: Eliminates need for discrete transistor inverters while maintaining <4 ns delay and <0.1 V VOL at 24 mA sink. |
Use Scenario: Level-shifting and waveform sharpening between mismatched logic families (e.g., 3.3 V MCU to 5 V peripheral). IC Role / Device Role / Timing Role: CMOS-compatible voltage translation and edge-rate enhancement for asynchronous control lines. Use Value: Delivers clean, rail-to-rail inversion with VIH/VIL margins >1.2 V at 3.3 V, preventing metastability in mixed-supply systems. |
| Microcontroller Clock Conditioning | LED Driver Enable Logic |
Use Scenario: Squaring up noisy or slow-rising oscillator outputs before feeding into MCU clock input or watchdog timer. IC Role / Device Role / Timing Role: Schmitt-trigger-free waveform shaping via high-gain CMOS inversion with controlled rise/fall times. Use Value: Achieves <7.5 ns max tPLH/tPHL at 5.0 V, preserving timing integrity without adding jitter from hysteresis. |
Use Scenario: Inverting active-low LED enable signals from microcontroller ports to match common-anode display wiring. IC Role / Device Role / Timing Role: Logic-level inversion with sufficient sink current (24 mA) to directly drive indicator LEDs without series resistors. Use Value: Reduces BOM count by replacing transistor+resistor combinations while maintaining <0.44 V VOL at full load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar hex inverter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MC74AC04DR2G | Same AC-series hex inverter, identical electrical specs, but supplied in tape-and-reel (2500 pcs) vs. tube (55 pcs) packaging | No functional difference; suited for automated SMT production rather than prototyping or low-volume repair | Select MC74AC04DR2G when high-volume placement or consistent reel-based logistics are required |
| SN74AC04N | Texas Instruments part with matching 2.0–6.0 V range and ±24 mA drive, but higher max ICC (100 µA) and wider propagation delay spread (5.5 ns max) | Valid for drop-in replacement only in non-critical timing applications; not qualified for extended industrial temperature range | Choose SN74AC04N only if TI supply chain alignment or dual-sourcing strategy mandates TI branding |
Compared with MC74AC04DR2G, MC74AC04MELG offers identical core functionality but differs in packaging format and order unit-making it ideal for manual assembly or small-batch validation. Against SN74AC04N, MC74AC04MELG provides tighter timing control, lower quiescent current, and guaranteed −40°C to +85°C operation, supporting more demanding industrial deployments.
Availability
MC74AC04MELG is available at Aetrix Electronics and suitable for industrial control logic, digital interface buffering, microcontroller clock conditioning, and LED driver enable applications requiring stable component supply, RoHS compliance, and long-term manufacturability.
Supply support for MC74AC04MELG 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 technologies for automotive, industrial, and cloud infrastructure markets.
The MC74AC04MELG belongs to onsemi's 74AC logic family-designed specifically for high-speed, low-power CMOS applications where voltage flexibility, noise immunity, and industrial reliability are essential.
FAQ
What is the maximum supply voltage rating for MC74AC04MELG?
The absolute maximum DC supply voltage (VCC) for MC74AC04MELG is +6.5 V, but the recommended operating range is 2.0 V to 6.0 V. Operating continuously above 6.0 V risks permanent damage, while operation below 2.0 V may result in unreliable switching due to insufficient input threshold margins. The device is fully characterized and guaranteed across the 2.0–6.0 V range per its datasheet specifications.
Does MC74AC04MELG support TTL-level input compatibility?
No, MC74AC04MELG does not support TTL-level input compatibility. It uses standard CMOS input thresholds (e.g., VIH = 2.1 V @ 3.0 V), unlike the pin-compatible MC74ACT04 variant which features TTL-compatible inputs (VIH = 2.0 V, VIL = 0.8 V @ 5.0 V). Using MC74AC04MELG with TTL outputs may cause marginal or failed switching; verify input voltage levels against the MC74AC04MELG's VIH/VIL specs before integration.
What is the thermal resistance (θJA) of MC74AC04MELG in its SOIC-14 package?
The junction-to-ambient thermal resistance (θJA) for MC74AC04MELG in the SOIC-14 package (Case 751A) is 116°C/W under standard JEDEC test conditions (still air, 2-layer board). This value assumes proper PCB layout with adequate copper pour on the GND pad and decoupling capacitors placed near VCC. Exceeding 1077 mW power dissipation at 25°C ambient will raise junction temperature beyond the 150°C limit unless heatsinking or airflow is added.
Can MC74AC04MELG drive a 50 pF capacitive load with guaranteed timing?
Yes, MC74AC04MELG is fully characterized for CL = 50 pF loads, with guaranteed propagation delays of tPLH/tPHL ≤ 7.5 ns at VCC = 5.0 V and ≤10 ns at VCC = 3.3 V. These values include process, voltage, and temperature variations across −40°C to +85°C. For loads exceeding 50 pF, delay increases linearly with capacitance, and output rise/fall times degrade-designers should simulate or measure actual waveforms in context.
Is MC74AC04MELG pin-compatible with MC74ACT04 variants?
Yes, MC74AC04MELG is pin-compatible with MC74ACT04 devices (e.g., MC74ACT04DR2G) in the same SOIC-14 package-both share identical pinout, footprint, and terminal functions. However, they differ electrically: MC74ACT04 has TTL-compatible inputs and slightly higher ICC, while MC74AC04MELG offers wider VCC range (2.0–6.0 V vs. 4.5–5.5 V) and better noise margins at lower voltages. Swapping requires verifying input signal levels and timing budgets.
MC74AC04MELG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- 74AC
- 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 ~ 6V
- Current - Quiescent (Max):
- 4 µA
- Current - Output High, Low:
- 24mA, 24mA
- Input Logic Level - Low:
- 0.9V ~ 1.65V
- Input Logic Level - High:
- 2.1V ~ 3.85V
- Max Propagation Delay @ V, Max CL:
- 7ns @ 5V, 50pF
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOEIAJ-14
MC74AC04MELG FAQ
1.How can I place an order for MC74AC04MELG through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74AC04MELG 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 MC74AC04MELG reliable?
The price and inventory of MC74AC04MELG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74AC04MELG is usually 5 days.
3.What payment methods are accepted for MC74AC04MELG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74AC04MELG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74AC04MELG?
MC74AC04MELG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74AC04MELG 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 MC74AC04MELG?
For technical support, including MC74AC04MELG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74AC04MELG requirements.
6.How does Aetrix verify that MC74AC04MELG is sourced from the original manufacturer or authorized distributors?
All MC74AC04MELG 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 MC74AC04MELG meets industry standards.
7.What is the process for return or replacement of MC74AC04MELG?
All MC74AC04MELG units undergo pre-shipment inspection (PSI). If there is an issue with MC74AC04MELG, 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 MC74AC04MELG part is unused and in its original packaging.
Return procedure for MC74AC04MELG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MC74AC04MELG Tags
-
SN74LVC1G14DBVR
Texas Instruments
-
SN74LVC1G14DCKR
Texas Instruments
-
SN74AHC1G14DBVR
Texas Instruments
-
SN74LVC1G08DBVR
Texas Instruments
-
SN74LVC1G08DCKR
Texas Instruments
-
SN74LVC1G32DCKR
Texas Instruments
-
SN74LVC1G04DBVR
Texas Instruments
.jpg)
-
74LVC1G08GW,125
Nexperia USA Inc.
-
SN74LVC1G04DCKR
Texas Instruments
-
SN74AHC1G08DBVR
Texas Instruments
-
SN74LVC1G32DBVR
Texas Instruments
-
SN74AHCT1G08DBVR
Texas Instruments
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
