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HomeProductsIntegrated Circuits (ICs)Logic - Buffers, Drivers, Receivers, TransceiversMC74AC125DG
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MC74AC125DG - onsemi

Manufacturer Part Number
MC74AC125DG
Manufacturer
onsemi
Allelco Part Number
32D-MC74AC125DG
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
122,120 pcs available, New & Original
Parts Description
IC BUFFER NON-INVERT 6V 14SOIC
Package
14-SOIC
Data sheet
MC74AC125DG.pdf

Datasheets

MC74AC(T)125.pdf

HTML Datasheet

MC74AC(T)125.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 122120
  • Unit Price: $0.795
  • Subtotal: $0.00

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Add to Cart and Submit RFQ now, we'll contact you immediately.

Quantity Unit Price Ext. Price
1+ $0.795 $0.80
10+ $0.676 $6.76
55+ $0.591 $32.51
110+ $0.517 $56.87
495+ $0.484 $239.58
990+ $0.47 $465.30
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

MC74AC125DG Tech Specifications
onsemi - MC74AC125DG technical specifications, attributes, parameters and parts with similar specifications to onsemi - MC74AC125DG

Product Attribute Attribute Value
Manufacturer onsemi
Voltage - Supply 2V ~ 6V
Supplier Device Package 14-SOIC
Series 74AC
Package / Case 14-SOIC (0.154", 3.90mm Width)
Package Tube
Output Type 3-State
Operating Temperature -40°C ~ 85°C (TA)
Product Attribute Attribute Value
Number of Elements 4
Number of Bits per Element 1
Mounting Type Surface Mount
Logic Type Buffer, Non-Inverting
Input Type -
Current - Output High, Low 24mA, 24mA
Base Product Number 74AC125

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8542.39.0001

Parts Introduction

MC74AC125DG Image
MC74AC125DG (1)

Manufacturer Part Number

MC74AC125DG

Manufacturer

onsemi

Introduction

The MC74AC125DG is part of onsemi's 74AC series, offering a quad buffer logic component with non-inverting elements.

Product Features and Performance

Quad buffer configuration

Non-inverting outputs

Individual 3-state outputs

High output drive: 24mA sink and source

Broad voltage range: 2V to 6V

Product Advantages

Flexible power supply compatibility

High current drive for driving loads

Increased signal integrity with 3-state outputs

MC74AC125DG Image
MC74AC125DG (2)

Key Technical Parameters

Number of Elements: 4

Number of Bits per Element: 1

Output Type: 3-State

Current Output High, Low: 24mA

Voltage Supply: 2V ~ 6V

Operating Temperature: -40°C ~ 85°C

Quality and Safety Features

Compliant with the pertinent industry standards for safety and performance

Compatibility

Surface Mount compatible with 14-SOIC packaging

Works with standard logic signal levels

Application Areas

Data storage

Signal processing

Telecommunications

Computing

Industrial controls

Product Lifecycle

Status: Active

Not currently nearing discontinuation

Availability of replacements or upgrades if ever needed

Several Key Reasons to Choose This Product

Reliable performance by a recognized industry leader, onsemi

Versatile logic device suitable for a variety of applications

High current output capability to drive heavier loads

Wide operating temperature range for harsh environments

Availability and long-term support due to active product status

Frequently Asked Questions(FAQ)

How does the MC74AC125DG buffer handle signal integrity in high-speed digital designs, and what supply voltage range ensures reliable 3-state operation without excessive power consumption?
The MC74AC124DG operates reliably across a 2V to 6V supply range, making it suitable for mixed-voltage systems where compatibility with both 3.3V and 5V logic families is required. Its 3-state outputs allow multiple devices to share a common bus without contention, reducing crosstalk when properly controlled via enable pins. At 6V operation, the output drive current remains stable at ±24mA, ensuring robust noise margins even in longer interconnects or higher capacitive loads.
What are the key differences between the MC74AC125DG and the MC74HC125A in terms of switching speed, power dissipation, and voltage compatibility for industrial control applications?
While both parts offer 4-bit non-inverting buffers with 3-state outputs, the MC74AC125DG features Advanced CMOS (AC) technology optimized for faster propagation delays (~5–7 ns) compared to HC-series speeds, enabling higher clock frequencies. The AC variant also supports lower quiescent current than typical HC devices and maintains full functionality down to 2V, offering better performance in low-power or battery-backed systems. In contrast, HC parts typically require ≥4.5V operation and exhibit higher static power consumption under similar loads.
Can the MC74AC125DG be used safely in automotive-grade environments, and how does its temperature rating impact reliability in embedded systems deployed outdoors?
Although not AEC-Q100 qualified, the MC74AC125DG’s commercial-grade operating temperature range of -40°C to +85°C makes it viable for many industrial and outdoor embedded applications where ambient conditions remain within this window. However, long-term exposure near the upper limit may accelerate package degradation due to thermal cycling; thus, adequate derating and PCB layout considerations are recommended for mission-critical deployments.
Why might an engineer choose the MC74AC125DG over discrete transistor-based buffering solutions, and what design trade-offs should be considered regarding footprint and integration density?
The MC74AC125DG integrates four independent 1-bit buffers into a single 14-pin SOIC package, significantly reducing board space versus discrete implementations that would require multiple components plus supporting passives. This consolidation lowers parasitic inductance and capacitance, improving signal fidelity at higher speeds. However, designers must account for potential skew introduced by shared power rails or ground paths, especially when cascading multiple ICs on the same bus line.
How does the moisture sensitivity level (MSL) classification of the MC74AC125DG influence handling procedures during reflow soldering, and what precautions apply if using lead-free processes?
Classified as MSL 1, the MC74AC125DG has no moisture absorption limitations and can withstand unlimited storage before baking, simplifying inventory management. Nevertheless, standard reflow profiles—especially those exceeding 260°C peak—should still comply with JEDEC J-STD-020 guidelines to prevent thermal stress on the SOIC body. No additional pre-bake is needed prior to assembly, but handling during humid ambient conditions should follow ESD protocols to avoid latent damage.
What happens to output impedance and noise immunity when driving long traces with the MC74AC125DG at 2V versus 6V supply voltages?
At lower supply voltages like 2V, the output high/low currents drop proportionally while maintaining relatively constant Ron characteristics, resulting in slightly degraded rise/fall times but acceptable noise margins if trace lengths stay under 10 cm. At 6V, the stronger drive capability minimizes voltage droop along transmission lines, enhancing signal integrity in layouts with distributed loads. Both configurations benefit from the AC family’s balanced input thresholds, providing consistent noise rejection across the entire 2–6V window.
In a system requiring bidirectional data flow on a shared bus, how does the enable pin architecture of the MC74AC125DG compare to dedicated transceiver ICs like the SN74ABT245?
Unlike transceivers such as the SN74ABT245, which use direction-control inputs to switch between transmit and receive modes, the MC74AC125DG only provides active-high enables for tri-stating outputs—not true bidirectional signaling. It cannot drive inputs back to other devices; thus, for full-duplex communication, additional drivers/receivers or level-shifting circuitry would be necessary. Use the MC74AC125DG when unidirectional buffering suffices and cost/footprint constraints favor simplicity over full duplex.
Are there any known limitations or failure modes associated with the MC74AC125DG’s output stage when sourcing or sinking high-current loads continuously near rated values?
Continuous operation at ±24mA output current is permissible within the absolute maximum ratings, but prolonged exposure near these limits increases junction temperature, potentially accelerating electromigration or bond wire degradation. Thermal resistance (θJA ≈ 100°C/W for SOIC) implies that sustained heavy loading without airflow could push the die above safe operating area boundaries. Always verify worst-case power dissipation (P = Vcc × Iq + Σ(Voh × Ioh + Vol × Iol)) against ambient conditions to avoid premature failure.

Parts with Similar Specifications

The three parts on the right have similar specifications to onsemi MC74AC125DG

Product Attribute MC74AC125DTR2G MC74AC125DR2G MC74AC125MELG MC74AC125DTR2
Part Number MC74AC125DTR2G MC74AC125DR2G MC74AC125MELG MC74AC125DTR2
Manufacturer onsemi onsemi onsemi onsemi
Number of Elements - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Series - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Output Type - Current - Unbuffered Voltage - Buffered -
Current - Output High, Low - - - -
Logic Type - - - -
Number of Bits per Element - - - -
Input Type - - - Differential
Voltage - Supply - - - -
Mounting Type - Surface Mount Through Hole Surface Mount

MC74AC125DG Datasheet PDF

Download MC74AC125DG pdf datasheets and onsemi documentation for MC74AC125DG - onsemi.

Datasheets
MC74AC(T)125.pdf
Environmental Information
Material Declaration MC74AC125DG.pdf onsemi REACH.pdf onsemi RoHS.pdf
HTML Datasheet
MC74AC(T)125.pdf

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Customer Reviews

Evaluation: 10 Articles

  • ECUb***h
    Sep 22, 2026

    Used for repair of an older automotive ECU. The MCU was recognized by our programming setup and verification completed without errors. The repaired board now starts and communicates normally.

  • RS48***ieldTech
    Sep 16, 2026

    Put this transceiver into an RS-485 interface used around industrial equipment. Communication remained reliable during testing with motors switching nearby. Good result for the replacement board.

  • Logi***b_Chris
    Sep 8, 2026

    Purchased for a Cyclone III development project. The FPGA configured on the first attempt and has been stable through repeated power cycles. No problems with the I/O we are using.

  • Circ***FixerTom
    Sep 2, 2026

    Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.

  • Retr***UWorks
    Aug 31, 2026

    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
    Aug 28, 2026

    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

  • Leat***O'Keefe
    Aug 20, 2026

    one of my hobbies is skydiving. and when i'm skydiving this works great.

  • Ilen***
    Aug 20, 2026

    This product works considerably well. It secretly improves my basketball by a lot.

  • Indu***ialPower
    Aug 17, 2026

    Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.

  • Nikh***ech
    Aug 13, 2026

    Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
  • Packaging
  • Certifications & Memberships

QC (Quality Warranty)

Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
  1. Visual inspection
  2. Performance testing and reliability verification
  3. Standardized full-process testing
  4. Precise control of every parameter
We eliminate defective components and ensure the stable operation of electronic devices through professional quality standards.
Quality Inspection
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Payment Support

The payment method can be chosen from the methods shown below: Wire Transfer (T/T, Bank Transfer), Western Union, Credit card, PayPal.
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Stable Delivery, Sincere Partnership — Your Faithful Supply Chain Partner
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Contact us if you have any questions.

Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
  • SMTA
  • IPC
  • ESD
  • PSMA
MC74AC125DG Image

MC74AC125DG

onsemi
32D-MC74AC125DG

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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