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onsemi MC74ACT04MR1
- Part No.:
- MC74ACT04MR1
- Manufacturer:
- onsemi
- Category:
- Gates and Inverters
- Package:
- -
- Datasheet:
-
MC74ACT04MR1.pdf
- Description:
- IC INVERTER
- Quantity:
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Inventory:11,000
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Product details
Overview
MC74ACT04MR1 from onsemi is a hex inverter logic IC with TTL-compatible inputs, designed for digital signal inversion in 5 V systems. It delivers ±24 mA output drive per channel, supports −40°C to +85°C operating temperature, and features low propagation delay (max 9.0 ns at 5.0 V, CL = 50 pF). It is commonly used in bus buffering, level translation, and clock signal conditioning.
For engineers reviewing the MC74ACT04MR1 datasheet, pinout, applications, or equivalent options, key selection criteria include input voltage compatibility (VIH/VIL thresholds at 5 V), output drive capability under load, AC timing performance, and SOEIAJ-14 package mechanical fit in space-constrained PCB layouts.
Technical Context
The MC74ACT04MR1 implements six independent CMOS inverters in a single monolithic die, using advanced silicon-gate technology to achieve TTL-level input thresholds while maintaining CMOS power efficiency. Its input structure accepts standard TTL logic levels (VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 4.5–5.5 V), enabling direct interfacing with legacy 5 V TTL families without level shifters.
Each inverter provides rail-to-rail output swing with VOH ≥ 4.4 V and VOL ≤ 0.44 V at IOL/IOH = ±24 mA, ensuring robust noise margins in noisy industrial environments. Propagation delays are tightly specified (tPLH/tPHL ≤ 9.0/8.5 ns max at 5.0 V, CL = 50 pF), supporting reliable operation in high-speed digital control and timing circuits up to ~100 MHz toggle rate.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Logic Function | Hex inverter (6 independent NOT gates) |
| Supply Voltage Range | 4.5 V to 5.5 V - ensures compatibility with regulated 5 V rails and tolerance to line variation |
| Input Thresholds (VIH/VIL) | VIH ≥ 2.0 V, VIL ≤ 0.8 V at VCC = 5.5 V - guarantees reliable recognition of TTL-compatible input signals |
| Output Drive (IOL/IOH) | ±24 mA per output - sufficient to drive multiple 74-series loads or small capacitive buses (≤50 pF) |
| Propagation Delay | Max 9.0 ns (tPLH), 8.5 ns (tPHL) at VCC = 5.0 V, CL = 50 pF - enables use in sub-100 MHz synchronous logic paths |
| Operating Temperature | −40°C to +85°C - qualified for industrial-grade embedded control and instrumentation applications |
| Input Leakage Current | ±1.0 µA max at VCC = 5.5 V - minimizes loading on high-impedance source nodes |
Pinout & Package
MC74ACT04MR1 is packaged in a 14-lead SOEIAJ (Small Outline J-bend) surface-mount package (Case 965), measuring 10.2 mm × 5.3 mm × 1.7 mm with 0.65 mm lead pitch. The package is Pb-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3, 5, 9, 11, 13 | Input (A1–A6) | Independent logic inputs for each of the six inverters |
| 2, 4, 6, 10, 12, 14 | Output (Y1–Y6) | Corresponding inverted outputs; each capable of sourcing/sinking ±24 mA |
| 7 | GND | Digital ground reference for all inputs, outputs, and internal circuitry |
| 14 | VCC | Positive supply terminal (4.5–5.5 V); decoupling capacitor required near this pin |
Key Features
| Feature | Design Value |
|---|---|
| TTL-compatible inputs | Accepts standard 5 V TTL logic levels (VIH ≥ 2.0 V, VIL ≤ 0.8 V), eliminating need for external level translators when interfacing with legacy controllers |
| High-output drive | ±24 mA per output supports fan-out to ≥10 LS-TTL loads or direct driving of small-signal LEDs and MOSFET gates |
| Low propagation delay | Sub-10 ns typical delay enables use in timing-critical paths such as clock inversion, pulse shaping, and synchronous state machine feedback |
| Pb-free SOEIAJ package | RoHS-compliant 14-pin J-bend lead frame meets modern manufacturing and environmental compliance requirements without sacrificing thermal or mechanical reliability |
| Wide operating temperature | Rated for −40°C to +85°C ambient ensures stable logic behavior in uncontrolled industrial enclosures and outdoor electronics |
Applications
| Industrial PLC I/O Conditioning | Legacy Microcontroller Bus Interface |
|---|---|
Use Scenario: Inverting status signals from optocoupled inputs before feeding into a PLC's main logic controller. IC Role / Device Role / Timing Role: Signal polarity correction and noise-immune level restoration for isolated digital inputs. Use Value: Enables clean TTL-compatible logic levels from slow or noisy opto-isolator outputs while providing 24 mA drive margin for downstream Schmitt-trigger inputs. |
Use Scenario: Translating and inverting address strobe or chip-select signals between an 8051 microcontroller and peripheral memory chips. IC Role / Device Role / Timing Role: Logic-level inversion and fan-out buffering for critical control lines with tight setup/hold timing budgets. Use Value: Sub-10 ns propagation delay preserves timing margins; ±24 mA drive ensures signal integrity across multi-load 5 V buses. |
| Test Equipment Signal Generation | Automotive Body Control Module |
Use Scenario: Generating complementary clock or trigger signals for automated test fixtures requiring precise edge alignment. IC Role / Device Role / Timing Role: High-fidelity digital waveform inversion with matched tPLH/tPHL characteristics for dual-edge timing generation. Use Value: Low skew (<1 ns typical between channels) and consistent delay enable accurate phase-reversed signal pairs in calibration and stimulus circuits. |
Use Scenario: Inverting wake-up or diagnostic request signals in a vehicle's body control unit before routing to CAN transceivers or LIN drivers. IC Role / Device Role / Timing Role: Robust logic inversion in electrically harsh automotive environments with wide temperature and supply variation. Use Value: −40°C to +85°C rating and 4.5–5.5 V supply range ensure reliable operation during cold cranking and under-hood thermal stress. |
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 electrical specs but 1.27 mm pitch vs. SOEIAJ's 0.65 mm pitch | Requires PCB layout change due to larger footprint and different lead form; better suited for manual assembly or lower-density boards | Select when SOIC-14 is preferred for reworkability or existing board compatibility |
| 74VHC04M | Higher VIH threshold (3.5 V min at VCC = 5 V); lower IOL/IOH (±8 mA); faster max speed (tPD ≤ 7.5 ns) | Not TTL-compatible - requires clean 5 V CMOS inputs; insufficient drive for multi-load TTL buses | Select only for pure CMOS systems where low power and speed outweigh drive strength and input compatibility needs |
Compared with SN74ACT04DR and 74VHC04M, the MC74ACT04MR1 uniquely combines TTL input compatibility, ±24 mA drive, and compact SOEIAJ packaging - making it optimal for space-constrained industrial and automotive designs requiring legacy interface support without layout redesign.
Availability
MC74ACT04MR1 is available at Aetrix Electronics and suitable for industrial automation, automotive body electronics, and test equipment requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.
Supply support for MC74ACT04MR1 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 manufacturer specializing in energy-efficient power, analog, sensor, and logic solutions for automotive, industrial, and cloud infrastructure markets.
The MC74ACT04MR1 belongs to onsemi's legacy ACT logic family, engineered for interoperability with TTL systems while delivering CMOS power efficiency and robustness - targeting industrial control, instrumentation, and legacy interface bridging applications.
FAQ
What logic family does MC74ACT04MR1 belong to, and how does it differ from standard 74AC devices?
The MC74ACT04MR1 belongs to the 74ACT (Advanced CMOS TTL-compatible) logic family. Unlike standard 74AC devices, which have CMOS-input thresholds (VIH ≈ 3.5 V at 5 V), the MC74ACT04MR1 features TTL-compatible inputs (VIH ≥ 2.0 V, VIL ≤ 0.8 V), allowing direct connection to older 74LS and 74F series outputs without level shifting. Its output drive and AC performance match 74AC, but its input structure makes MC74ACT04MR1 uniquely suited for mixed-logic-system interfacing.
What is the maximum capacitive load MC74ACT04MR1 can drive while maintaining guaranteed timing?
The MC74ACT04MR1 is characterized for CL = 50 pF in its AC specifications, with max propagation delay of 9.0 ns (tPLH) and 8.5 ns (tPHL) at VCC = 5.0 V. While it can drive higher capacitance, timing degrades predictably: at CL = 100 pF, delay increases by ~30–40% based on typical device behavior. For guaranteed spec compliance, keep total load ≤50 pF per output - including trace capacitance, input capacitance of downstream devices (e.g., 4.5 pF typical CIN), and probe loading. MC74ACT04MR1 data sheet confirms this 50 pF condition as the basis for all published AC parameters.
Is MC74ACT04MR1 pin-compatible with other 74ACT04 variants in different packages?
Yes - all 74ACT04 variants, including MC74ACT04MR1 (SOEIAJ-14), MC74ACT04D (SOIC-14), and MC74ACT04N (PDIP-14), share identical 14-pin functional pinouts per Figure 1 of the datasheet. Pin 1 is input A1, Pin 2 is output Y1, ..., Pin 7 is GND, Pin 14 is VCC. However, physical dimensions, lead pitch (0.65 mm for SOEIAJ vs. 1.27 mm for SOIC), and soldering profiles differ - so PCB layout and assembly processes must be adapted even though logic connectivity remains unchanged across packages.
Does MC74ACT04MR1 support operation at 3.3 V supply?
No - the MC74ACT04MR1 is not rated or characterized for 3.3 V operation. Its Recommended Operating Conditions specify VCC = 4.5 V to 5.5 V only. At 3.3 V, input thresholds become undefined (VIH/VIL specs assume ≥4.5 V), output drive drops significantly (IOL/IOH no longer guaranteed), and AC timing is not assured. For 3.3 V systems, consider 74LVC04 or 74AHC04 instead. The MC74ACT04MR1 must be used strictly within its 4.5–5.5 V supply window to meet datasheet performance guarantees.
What is the thermal resistance (θJA) of MC74ACT04MR1 in its SOEIAJ-14 package?
The datasheet does not publish θJA for the SOEIAJ-14 (Case 965) package. However, based on onsemi's published thermal data for equivalent-density SOEIAJ packages (e.g., MC74ACT14), θJA is approximately 120°C/W with standard 1-inch² 2-oz copper pad. This value assumes JEDEC-standard PCB layout (single-layer copper, no internal planes). For reliable operation at full output load across −40°C to +85°C ambient, derate power dissipation accordingly: max ICC = 40 µA quiescent, plus dynamic power from switching - total die temperature must remain below 140°C junction limit. MC74ACT04MR1 thermal design should include local copper pour and avoid placement near heat sources.
MC74ACT04MR1 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:
- -
MC74ACT04MR1 FAQ
1.How can I place an order for MC74ACT04MR1 through Aetrix?
Please submit a Request for Quotation (RFQ) for MC74ACT04MR1 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 MC74ACT04MR1 reliable?
The price and inventory of MC74ACT04MR1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MC74ACT04MR1 is usually 5 days.
3.What payment methods are accepted for MC74ACT04MR1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MC74ACT04MR1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MC74ACT04MR1?
MC74ACT04MR1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MC74ACT04MR1 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 MC74ACT04MR1?
For technical support, including MC74ACT04MR1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MC74ACT04MR1 requirements.
6.How does Aetrix verify that MC74ACT04MR1 is sourced from the original manufacturer or authorized distributors?
All MC74ACT04MR1 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 MC74ACT04MR1 meets industry standards.
7.What is the process for return or replacement of MC74ACT04MR1?
All MC74ACT04MR1 units undergo pre-shipment inspection (PSI). If there is an issue with MC74ACT04MR1, 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 MC74ACT04MR1 part is unused and in its original packaging.
Return procedure for MC74ACT04MR1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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