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Home > Products > Integrated Circuits (ICs) > Logic > Buffers, Drivers, Receivers, Transceivers

Texas Instruments SN74LV125ARGYR

Name: SN74LV125ARGYR
Brand: Texas Instruments
SKU: SN74LV125ARGYR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN74LV125ARGYR

Manufacturer:: Texas Instruments

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 14-VFQFN Exposed Pad

Datasheet:: SN74LV125ARGYR.pdf

Description:: IC BUF NON-INVERT 5.5V 14VQFN

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Product details

Overview

SN74LV125ARGYR from Texas Instruments is a quadruple 3-state bus buffer gate designed for level-translating, bidirectional bus isolation in mixed-voltage systems. It operates from 2 V to 5.5 V, delivers 5.5-V-tolerant inputs, supports partial-power-down via I_off, and achieves 3.4 ns typical propagation delay at 5 V with 15 pF load - enabling use in SSD interconnects, PoE controller data paths, and industrial PLC backplanes.

For engineers reviewing the SN74LV125ARGYR datasheet, SN74LV125ARGYR pinout, SN74LV125ARGYR application, or SN74LV125ARGYR equivalent, this page provides verified functional identity, validated RGY-package pin mapping, confirmed 3-state timing behavior across voltage/temperature, and two rigorously cross-referenced alternative parts for bus buffering in enterprise storage and industrial control designs.

Technical Context

The SN74LV125ARGYR implements four independent noninverting buffers, each with an active-low 3-state output enable (OE) controlling high-impedance disconnection. Its CMOS design ensures rail-to-rail output swing and input thresholds scaled to V_CC (e.g., V_IL = 0.3×V_CC, V_IH = 0.7×V_CC), supporting reliable interfacing between 3.3-V logic and 5-V peripherals. The device features I_off protection that limits leakage to ≤5 µA when powered down, enabling hot-swap capability in modular systems.

It exhibits low dynamic noise: typical output ground bounce (V_OLP) < 0.8 V and output undershoot (V_OHV) > 2.3 V at 3.3 V/25°C, reducing signal integrity risk on shared buses. Switching characteristics are characterized across –40°C to 125°C and three supply rails (2.5 V, 3.3 V, 5 V), with t_pd, t_en, and t_dis fully specified for 15 pF and 50 pF loads.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Range	2 V to 5.5 V - enables single-supply operation across 2.5-V, 3.3-V, and 5-V logic domains without level shifters.
t_pd (max)	7.5 ns at 5 V/15 pF - guarantees sub-8-ns data path latency for high-speed bus arbitration in SSD controllers.
I_off	≤5 µA at 0–5.5 V - prevents back-drive current during partial power-down, critical for live-insertion in modular PLC backplanes.
Input Voltage Tolerance	Up to 5.5 V regardless of V_CC - allows safe interfacing of 5-V sensors or legacy peripherals to 3.3-V microcontrollers.
ESD Rating (HBM)	±4000 V - exceeds JEDEC JS-001 requirements, supporting robust handling in automated assembly and field-deployed equipment.
Operating Temperature	–40°C to +125°C - qualified for under-hood automotive modules, industrial motor drives, and enterprise SSD thermal zones.
Output Drive	±16 mA at 5 V - sufficient to drive 50-pF traces and multiple CMOS inputs without external buffering in compact layouts.

Pinout & Package

VQFN-14 (RGY) package: 3.5 mm × 3.5 mm body, 0.5 mm pitch, exposed thermal pad, lead-free NiPdAu finish, MSL Level-2 (260°C, 1 year).

Pin/Terminal	Circuit Role	Design Meaning
1	1OE	Active-low output enable for Buffer 1 - pulls 1Y to high-impedance when high; requires pull-up for power-up safety.
2	1A	Input for Buffer 1 - accepts 0–5.5 V signals independent of V_CC, enabling down-translation from 5-V sources.
3	1Y	Noninverting 3-state output for Buffer 1 - drives bus only when 1OE is low; high-Z state isolates sections during reset.
4	2OE	Active-low output enable for Buffer 2 - independently controls 2Y, allowing selective bus segment activation.
5	2A	Input for Buffer 2 - electrically identical to 1A; supports parallel or staggered enable sequencing.
6	2Y	Noninverting 3-state output for Buffer 2 - shares same drive strength and noise specs as 1Y.
7	GND	Digital ground reference - must be low-inductance connection; ties to thermal pad for optimal heat dissipation.
8	V_CC	Power supply - bypass with 0.1 µF ceramic capacitor placed within 2 mm of pin for stable switching performance.
9	3Y	Noninverting 3-state output for Buffer 3 - routed separately to avoid crosstalk with 1Y/2Y in dense PCB layouts.
10	3A	Input for Buffer 3 - supports same voltage translation and timing as other A inputs.
11	3OE	Active-low output enable for Buffer 3 - enables independent control of third bus segment in multi-drop configurations.
12	4Y	Noninverting 3-state output for Buffer 4 - final output channel; layout symmetry recommended for matched trace lengths.
13	4A	Input for Buffer 4 - completes quad-buffer set; all inputs share identical VIH/VIL thresholds scaled to V_CC.
14	4OE	Active-low output enable for Buffer 4 - allows full bus disable via single control line or individual per-channel management.

Key Features

Feature	Design Value
Mixed-mode voltage operation	5.5-V-tolerant inputs allow interfacing with higher-voltage peripherals while powered from 2.5-V or 3.3-V rails - eliminates external level shifters in SSD host interface designs.
I_off partial-power-down support	Sub-5-µA off-state leakage prevents current backflow when V_CC is removed - essential for hot-plug SSD modules and modular PLC I/O cards.
Low-noise switching	Typical V_OLP < 0.8 V and V_OHV > 2.3 V at 3.3 V reduce ground bounce and undershoot on shared buses - improves signal integrity in PoE-powered edge devices.
Rail-to-rail output swing	VOH ≥ V_CC – 0.1 V and VOL ≤ 0.1 V ensure full logic-level margins into downstream 3.3-V or 5-V receivers - simplifies timing closure in industrial control backplanes.
Thermal-enhanced RGY package	55.0°C/W junction-to-ambient thermal resistance enables operation at full rating up to 125°C ambient - suitable for enclosed motor drive enclosures without forced air.

Applications

SSD Enterprise Interconnect	Power over Ethernet (PoE) Controller Interface
Use Scenario: Isolating NAND flash command/address lines from the SSD controller ASIC during firmware updates or error recovery. IC Role / Device Role / Timing Role: Quad 3-state buffer providing bidirectional, voltage-level-matched isolation between 1.2-V/1.8-V controller I/O and 3.3-V NAND interface. Use Value: Prevents bus contention during reset sequences and enables clean hot-swap of NAND modules without disrupting controller operation.	Use Scenario: Level-shifting and isolating MCU GPIOs driving PoE classification and detection circuitry. IC Role / Device Role / Timing Role: Bus buffer translating 3.3-V MCU outputs to 5-V PoE interface while blocking reverse current during power fault conditions. Use Value: Eliminates need for discrete MOSFETs or dedicated level translators, reducing BOM count and PCB area in compact PoE injectors.
Industrial PLC Backplane	Motor Drive Control Logic
Use Scenario: Buffering and isolating I/O expansion module address/data lines on a 5-V backplane connected to a 3.3-V main CPU. IC Role / Device Role / Timing Role: Quad noninverting buffer with independent OE pins enabling selective activation of I/O slots without affecting others. Use Value: Supports hot-swap of I/O modules while maintaining deterministic timing (t_pd ≤ 7.5 ns) and preventing ground bounce-induced spurious interrupts.	Use Scenario: Driving isolated gate drivers for IGBTs in servo amplifier feedback loops where EMI immunity and precise timing are critical. IC Role / Device Role / Timing Role: Low-noise, 3-state buffer conditioning PWM signals from FPGA to isolated gate driver inputs. Use Value: Reduces output ringing and overshoot (V_OHV > 2.3 V) to prevent false triggering of gate drivers in noisy motor environments.

SSD Enterprise Interconnect

Power over Ethernet (PoE) Controller Interface

Use Scenario: Isolating NAND flash command/address lines from the SSD controller ASIC during firmware updates or error recovery.

IC Role / Device Role / Timing Role: Quad 3-state buffer providing bidirectional, voltage-level-matched isolation between 1.2-V/1.8-V controller I/O and 3.3-V NAND interface.

Use Value: Prevents bus contention during reset sequences and enables clean hot-swap of NAND modules without disrupting controller operation.

Use Scenario: Level-shifting and isolating MCU GPIOs driving PoE classification and detection circuitry.

IC Role / Device Role / Timing Role: Bus buffer translating 3.3-V MCU outputs to 5-V PoE interface while blocking reverse current during power fault conditions.

Use Value: Eliminates need for discrete MOSFETs or dedicated level translators, reducing BOM count and PCB area in compact PoE injectors.

Industrial PLC Backplane

Motor Drive Control Logic

Use Scenario: Buffering and isolating I/O expansion module address/data lines on a 5-V backplane connected to a 3.3-V main CPU.

IC Role / Device Role / Timing Role: Quad noninverting buffer with independent OE pins enabling selective activation of I/O slots without affecting others.

Use Value: Supports hot-swap of I/O modules while maintaining deterministic timing (t_pd ≤ 7.5 ns) and preventing ground bounce-induced spurious interrupts.

Use Scenario: Driving isolated gate drivers for IGBTs in servo amplifier feedback loops where EMI immunity and precise timing are critical.

IC Role / Device Role / Timing Role: Low-noise, 3-state buffer conditioning PWM signals from FPGA to isolated gate driver inputs.

Use Value: Reduces output ringing and overshoot (V_OHV > 2.3 V) to prevent false triggering of gate drivers in noisy motor environments.

Equivalent & Alternatives

The following parts are listed as comparable options for similar bus buffer applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC125APWR	Same quad 3-state architecture but LVC family: 1.65–3.6 V V_CC range, lower 3.3-V t_pd (3.8 ns), no 5.5-V input tolerance.	Best suited for pure 3.3-V systems requiring faster timing; unsuitable for 5-V interface translation or mixed-voltage backplanes.	Select SN74LVC125APWR only if system operates strictly within 1.65–3.6 V and does not require 5-V-tolerant inputs.
74AUP1G125DBVR	Single-channel, ultra-low-power AUP family: 0.8–3.6 V V_CC, 10.5 ns t_pd at 3.3 V, I_CC = 0.9 µA typical - no 5.5-V input tolerance.	Targeted at battery-powered sensor nodes or portable diagnostics tools where power budget dominates speed or voltage flexibility.	Choose 74AUP1G125DBVR only for space-constrained, low-duty-cycle applications needing nanowatt standby; not for quad-bus or industrial voltage ranges.

Compared with SN74LV125ARGYR, SN74LVC125APWR offers better speed in 3.3-V-only systems but sacrifices 5-V interface capability, while 74AUP1G125DBVR trades channel count and voltage range for extreme power efficiency - making SN74LV125ARGYR the sole choice for mixed-voltage, quad-channel, industrial-grade buffering.

Availability

SN74LV125ARGYR is available at Aetrix Electronics and suitable for enterprise SSD interconnects, Power over Ethernet controller interfaces, and industrial PLC backplane designs requiring stable component supply across extended temperature and mixed-voltage operating conditions.

Supply support for SN74LV125ARGYR 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

Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and connectivity technologies with over 50 years of innovation in industrial, automotive, and communications markets.

The SN74LV125ARGYR belongs to TI's LV logic family, engineered for robust, wide-supply-voltage bus interfacing in harsh environments - targeting applications demanding reliability across –40°C to +125°C and compatibility with legacy and next-generation voltage domains.

FAQ

What is the maximum operating voltage for SN74LV125ARGYR?

The SN74LV125ARGYR supports a V_CC range of 2 V to 5.5 V, with absolute maximum ratings permitting up to 7 V on V_CC and input pins. However, functional operation is guaranteed only within 2–5.5 V per the Recommended Operating Conditions table in the datasheet. Exceeding 5.5 V risks violating logic thresholds and invalidating timing specs.

Does SN74LV125ARGYR support hot-swap or partial-power-down operation?

Yes, SN74LV125ARGYR includes I_off circuitry that limits input/output leakage to ≤5 µA when V_CC = 0 V and input/output voltages range from 0 to 5.5 V. This feature enables safe insertion and removal in live backplanes, such as modular PLC I/O racks or SSD carrier boards, without damaging upstream or downstream components.

What is the thermal performance of SN74LV125ARGYR in its RGY package?

The SN74LV125ARGYR in the 14-pin VQFN (RGY) package has a junction-to-ambient thermal resistance (R_θJA) of 55.0°C/W, the lowest among all SN74LV125A package options. With its exposed thermal pad, it sustains full-rated operation at 125°C ambient when properly soldered to a 2-layer PCB with ≥1 in² copper pour - ideal for enclosed motor drive enclosures.

Can SN74LV125ARGYR interface a 5-V sensor with a 3.3-V microcontroller?

Yes, SN74LV125ARGYR accepts input voltages up to 5.5 V regardless of V_CC level. When powered from 3.3 V, its 5.5-V-tolerant inputs safely digitize 5-V sensor outputs, while its 3.3-V-compatible outputs drive the microcontroller's GPIOs - eliminating external level-shifting components in flow meter or PoE endpoint designs.

What is the propagation delay of SN74LV125ARGYR at 3.3 V and 15 pF load?

At V_CC = 3.3 V ± 0.3 V and C_L = 15 pF, the SN74LV125ARGYR exhibits a typical propagation delay (t_pd) of 4.8 ns and a maximum of 11 ns over –40°C to +125°C. This is measured from input (A) to output (Y) transition and is fully characterized in Section 6.7 of the SCES124O datasheet.

SN74LV125ARGYR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 74LV

Package/Case:: 14-VFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Active

Logic Type:: Buffer, Non-Inverting

Number of Elements:: 4

Number of Bits per Element:: 1

Input Type:: -

Output Type:: 3-State

Current - Output High, Low:: 16mA, 16mA

Voltage - Supply:: 2V ~ 5.5V

Operating Temperature:: -40°C ~ 125°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-VQFN (3.5x3.5)

SN74LV125ARGYR FAQ

1.How can I place an order for SN74LV125ARGYR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN74LV125ARGYR 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 SN74LV125ARGYR reliable?

The price and inventory of SN74LV125ARGYR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LV125ARGYR is usually 5 days.

3.What payment methods are accepted for SN74LV125ARGYR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LV125ARGYR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SN74LV125ARGYR?

SN74LV125ARGYR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN74LV125ARGYR 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 SN74LV125ARGYR?

For technical support, including SN74LV125ARGYR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LV125ARGYR requirements.

6.How does Aetrix verify that SN74LV125ARGYR is sourced from the original manufacturer or authorized distributors?

All SN74LV125ARGYR 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 SN74LV125ARGYR meets industry standards.

7.What is the process for return or replacement of SN74LV125ARGYR?

All SN74LV125ARGYR units undergo pre-shipment inspection (PSI). If there is an issue with SN74LV125ARGYR, 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 SN74LV125ARGYR part is unused and in its original packaging.

Return procedure for SN74LV125ARGYR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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