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

onsemi 74LVX125SJX

Name: 74LVX125SJX
Brand: onsemi
SKU: 74LVX125SJX
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: 74LVX125SJX

Manufacturer:: onsemi

Category:: Buffers, Drivers, Receivers, Transceivers

Package:: 14-SOIC (0.209", 5.30mm Width)

Datasheet:: 74LVX125SJX.pdf

Description:: IC BUFFER NON-INVERT 3.6V 14SOP

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Product details

Overview

74LVX125SJX from onsemi is a low-voltage quad non-inverting buffer IC with 3-STATE outputs, designed for level translation between 5 V and 3.3 V systems. It operates from 2.0 V to 3.6 V supply, supports ±25 mA output drive, delivers propagation delay as low as 4.4 ns (VCC = 3.3 V, CL = 15 pF), and features input tolerance up to 6.5 V - enabling robust interfacing in mixed-voltage digital logic applications such as bus buffering in industrial controllers.

For engineers reviewing the 74LVX125SJX datasheet, pinout, applications, or equivalent options, key selection criteria include its guaranteed simultaneous switching noise performance, dynamic threshold compliance at −40°C to +85°C, 3-STATE enable timing (tPZH/tPLZ ≤ 13.0 ns), and TSSOP-14 WB package compatibility with high-density PCB layouts.

Technical Context

The 74LVX125SJX implements four independent CMOS buffer channels, each with an active-low 3-STATE output enable (OEn) controlling bidirectional signal flow on shared buses. Its input structure tolerates 0–5.5 V regardless of VCC (2.0–3.6 V), enabling true 5 V → 3.3 V level translation without external resistors or translators.

It meets stringent noise immunity requirements: dynamic VOL/VIL limits are specified at ±0.3 V/0.8 V (VCC = 3.3 V, CL = 50 pF), and output skew is guaranteed ≤1.5 ns across all four channels - critical for synchronized data capture in clocked bus architectures.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage	2.0 V to 3.6 V - enables operation in modern low-power 3.3 V systems while maintaining compatibility with legacy 2.5 V rails.
Input Voltage Range	0 V to 5.5 V - allows direct connection to 5 V TTL/CMOS logic without clamping diodes or level-shifting circuitry.
Output Drive	±25 mA - sufficient to drive standard 50 pF loads at full speed without signal degradation.
Propagation Delay	4.4 ns typical (VCC = 3.3 V, CL = 15 pF) - supports >100 MHz bus operation with margin.
3-STATE Enable/Disable Time	tPZH/tPLZ ≤ 13.0 ns (VCC = 3.3 V, CL = 50 pF) - ensures clean bus release and acquisition during hot-swap or multiplexed access.
Operating Temperature	−40°C to +85°C - qualified for industrial-grade embedded control and automation environments.
Package	TSSOP-14 WB (Case 948G) - 4.9 mm × 4.4 mm footprint with 0.65 mm pitch, optimized for automated assembly and thermal dissipation.

Pinout & Package

TSSOP-14 WB package (Case 948G), 0.65 mm pitch, 4.9 mm × 4.4 mm body, Pb-free/Halide-free, moisture sensitivity level 1 (MSL1).

Pin/Terminal	Circuit Role	Design Meaning
1, 4, 10, 13	Input (A1–A4)	Non-inverting data inputs; tolerate up to 6.5 V, enabling safe interfacing with higher-voltage logic families.
2, 5, 11, 14	Output Enable (OE1–OE4)	Active-low enables; each controls one buffer independently - supports per-channel bus arbitration.
3, 6, 12, 9	Output (Y1–Y4)	3-STATE outputs; high-impedance state (Z) when OE = HIGH - prevents bus contention in multi-driver systems.
7	GND	Ground reference for all I/O and internal logic; must be connected to system ground plane for noise immunity.
14	VCC	Positive supply rail (2.0–3.6 V); decoupling capacitor (0.1 µF) required within 5 mm for stable AC performance.

Key Features

Feature	Design Value
5 V to 3.3 V Level Translation	Input voltage tolerance up to 6.5 V with VCC as low as 2.0 V - eliminates need for external translators in mixed-supply systems.
Guaranteed Simultaneous Switching Noise (SSN)	Dynamic VOL/VIL limits validated at −40°C to +85°C - ensures reliable logic thresholds under worst-case noise conditions.
Low Propagation Skew	≤1.5 ns max output-to-output skew - maintains timing alignment across all four buffers for synchronous bus interfaces.
High Noise Immunity	VIH = 2.4 V / VIL = 0.8 V at VCC = 3.6 V - provides >1.6 V noise margin against ground bounce and crosstalk.
Low Power Dissipation	ICC ≤ 40 µA max (VCC = 3.6 V, TA = −40°C to +85°C) - reduces standby current in battery-backed or energy-sensitive designs.

Applications

Industrial PLC Backplane Bus	Automotive Body Control Module (BCM)
Use Scenario: Buffering address/data lines between 5 V microcontroller peripherals and 3.3 V FPGA-based I/O expanders on a shared backplane. IC Role / Device Role / Timing Role: Quad non-inverting buffer with per-channel 3-STATE control acts as voltage-level translator and bus isolator during hot-plug events. Use Value: Enables seamless interoperability without external level shifters; tPZH ≤ 13.0 ns ensures glitch-free bus handoff during reconfiguration.	Use Scenario: Interfacing legacy 5 V sensor signals (e.g., door switch, seat position) to a 3.3 V CAN controller MCU in a body domain ECU. IC Role / Device Role / Timing Role: Input-tolerant buffer conditions noisy automotive signals before digitization, with OEn tied to MCU reset for fail-safe default isolation. Use Value: VI tolerance up to 6.5 V absorbs load-dump transients; guaranteed VIL = 0.8 V at VCC = 3.6 V rejects EMI-induced false triggers.
Medical Diagnostic Equipment Data Acquisition	Test & Measurement Instrumentation Front-End
Use Scenario: Isolating ADC interface lines between a 5 V analog front-end ASIC and a 3.3 V ARM Cortex-M7 processor in portable ultrasound units. IC Role / Device Role / Timing Role: Low-skew (≤1.5 ns) buffer preserves timing integrity of parallel sample-data transfers across voltage domains. Use Value: Propagation delay variation <1.5 ns ensures sub-ns synchronization across all four data lanes - critical for coherent sampling.	Use Scenario: Driving multiple 3.3 V logic analyzers or oscilloscope trigger inputs from a single 5 V pattern generator output bank. IC Role / Device Role / Timing Role: Fan-out buffer with 3-STATE capability allows dynamic routing of test signals to different instruments without hardware reconfiguration. Use Value: ±25 mA drive strength sustains signal integrity into 50 Ω terminated lines; tPLH = 4.4 ns enables accurate edge placement in high-speed stimulus generation.

Industrial PLC Backplane Bus

Automotive Body Control Module (BCM)

Use Scenario: Buffering address/data lines between 5 V microcontroller peripherals and 3.3 V FPGA-based I/O expanders on a shared backplane.

IC Role / Device Role / Timing Role: Quad non-inverting buffer with per-channel 3-STATE control acts as voltage-level translator and bus isolator during hot-plug events.

Use Value: Enables seamless interoperability without external level shifters; tPZH ≤ 13.0 ns ensures glitch-free bus handoff during reconfiguration.

Use Scenario: Interfacing legacy 5 V sensor signals (e.g., door switch, seat position) to a 3.3 V CAN controller MCU in a body domain ECU.

IC Role / Device Role / Timing Role: Input-tolerant buffer conditions noisy automotive signals before digitization, with OEn tied to MCU reset for fail-safe default isolation.

Use Value: VI tolerance up to 6.5 V absorbs load-dump transients; guaranteed VIL = 0.8 V at VCC = 3.6 V rejects EMI-induced false triggers.

Medical Diagnostic Equipment Data Acquisition

Test & Measurement Instrumentation Front-End

Use Scenario: Isolating ADC interface lines between a 5 V analog front-end ASIC and a 3.3 V ARM Cortex-M7 processor in portable ultrasound units.

IC Role / Device Role / Timing Role: Low-skew (≤1.5 ns) buffer preserves timing integrity of parallel sample-data transfers across voltage domains.

Use Value: Propagation delay variation <1.5 ns ensures sub-ns synchronization across all four data lanes - critical for coherent sampling.

Use Scenario: Driving multiple 3.3 V logic analyzers or oscilloscope trigger inputs from a single 5 V pattern generator output bank.

IC Role / Device Role / Timing Role: Fan-out buffer with 3-STATE capability allows dynamic routing of test signals to different instruments without hardware reconfiguration.

Use Value: ±25 mA drive strength sustains signal integrity into 50 Ω terminated lines; tPLH = 4.4 ns enables accurate edge placement in high-speed stimulus generation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad non-inverting buffer with 3-STATE applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN74LVC125APW	Higher VCC range (1.65–3.6 V); lower ICC (10 µA typ); no 5 V-tolerant inputs - requires external clamping for 5 V signals.	Best suited for pure 3.3 V systems with ultra-low quiescent power needs; not suitable for direct 5 V interface.	Select when system uses only 3.3 V logic and lowest possible static current is critical; avoid if 5 V inputs are present.
74ALVC125MTCX	Faster propagation (2.5 ns typ @ 3.3 V); same 5 V-tolerant inputs; higher ICC (50 µA max); identical TSSOP-14 WB package.	Preferred where sub-3 ns timing margins are required, e.g., high-speed memory interface buffering.	Choose when propagation delay <3 ns is mandatory and additional 10 µA ICC is acceptable; pinout and footprint match 74LVX125SJX.

Compared with SN74LVC125APW and 74ALVC125MTCX, the 74LVX125SJX uniquely balances 5 V input tolerance, industrial temperature range, and moderate speed (4.4 ns) at lowest cost - making it optimal for general-purpose mixed-voltage bus isolation where absolute minimum delay or ultra-low ICC are secondary priorities.

Availability

74LVX125SJX is available at Aetrix Electronics and suitable for industrial PLC backplanes, automotive body control modules, medical diagnostic data acquisition, and test instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for 74LVX125SJX 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, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and IoT applications.

The LVX logic family - including the 74LVX125SJX - was engineered for low-voltage, high-noise-immunity digital interfacing in mixed-supply systems, targeting industrial automation, automotive electronics, and portable medical equipment.

FAQ

What is the maximum input voltage the 74LVX125SJX can tolerate?

The 74LVX125SJX accepts input voltages up to 6.5 V regardless of VCC level - a key feature enabling direct interfacing with 5 V logic families while operating from a 3.3 V supply. This specification is verified across −40°C to +85°C and is explicitly defined in the Absolute Maximum Ratings table of the official onsemi datasheet (Rev. 2, April 2024). Exceeding 6.5 V risks permanent damage.

Does the 74LVX125SJX support true 5 V to 3.3 V level translation?

Yes - the 74LVX125SJX performs true bidirectional level translation: inputs accept 0–5.5 V signals while VCC is as low as 2.0 V, and outputs swing rail-to-rail (0 V to VCC) with full 3.3 V logic levels. This eliminates external level-shifting components in mixed-voltage designs, as confirmed by the Input Voltage and Output Voltage specifications in the Recommended Operating Conditions section of the 74LVX125SJX datasheet.

What is the 3-STATE disable time (tPLZ) for the 74LVX125SJX?

The 74LVX125SJX guarantees tPLZ ≤ 13.0 ns under worst-case conditions (VCC = 3.3 V ± 0.3 V, CL = 50 pF, RL = 1 kΩ, TA = −40°C to +85°C), as specified in the AC Electrical Characteristics table. This fast disable time ensures minimal bus contention during multi-driver arbitration - critical for reliable operation in shared-bus architectures like industrial backplanes.

Is the 74LVX125SJX pin-compatible with other TSSOP-14 quad buffer devices?

The 74LVX125SJX uses standard TSSOP-14 pinout per JEDEC MO-153, matching industry-standard quad buffer layouts (e.g., SN74LVC125A, 74ALVC125). Pin functions - A1–A4, OE1–OE4, Y1–Y4, VCC, GND - align identically. However, electrical differences (e.g., input tolerance, speed, ICC) require validation per application; mechanical compatibility does not imply functional drop-in replacement.

What package variant does the 74LVX125SJX use, and is it RoHS-compliant?

The 74LVX125SJX is packaged in TSSOP-14 WB (Case 948G), a Pb-free and halide-free surface-mount package with 0.65 mm pitch and moisture sensitivity level 1 (MSL1). This is confirmed in the Ordering Information and Package Dimensions sections of the onsemi datasheet (74LVX125/D, Rev. 2), and complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020.

74LVX125SJX Specifications

Product attributes: Attribute value

Manufacturer:: onsemi

Series:: 74LVX

Package/Case:: 14-SOIC (0.209", 5.30mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

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:: 4mA, 4mA

Voltage - Supply:: 2V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 14-SOP

74LVX125SJX FAQ

1.How can I place an order for 74LVX125SJX through Aetrix?

Please submit a Request for Quotation (RFQ) for 74LVX125SJX 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 74LVX125SJX reliable?

The price and inventory of 74LVX125SJX are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVX125SJX is usually 5 days.

3.What payment methods are accepted for 74LVX125SJX?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVX125SJX transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for 74LVX125SJX?

74LVX125SJX orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your 74LVX125SJX 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 74LVX125SJX?

For technical support, including 74LVX125SJX datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVX125SJX requirements.

6.How does Aetrix verify that 74LVX125SJX is sourced from the original manufacturer or authorized distributors?

All 74LVX125SJX 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 74LVX125SJX meets industry standards.

7.What is the process for return or replacement of 74LVX125SJX?

All 74LVX125SJX units undergo pre-shipment inspection (PSI). If there is an issue with 74LVX125SJX, 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 74LVX125SJX part is unused and in its original packaging.

Return procedure for 74LVX125SJX:

1.Submit a request within 90 days.

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

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