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Home > Products > Integrated Circuits (ICs) > Logic > Signal Switches, Multiplexers, Decoders

Texas Instruments SN65LVDS125ADBTR

Name: SN65LVDS125ADBTR
Brand: Texas Instruments
SKU: SN65LVDS125ADBTR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SN65LVDS125ADBTR

Manufacturer:: Texas Instruments

Category:: Signal Switches, Multiplexers, Decoders

Package:: 38-TFSOP (0.173", 4.40mm Width)

Datasheet:: SN65LVDS125ADBTR.pdf

Description:: IC CROSSPOINT SW 1 X 4:4 38TSSOP

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Product details

Overview

SN65LVDS125ADBTR from Texas Instruments is a 4×4 non-blocking LVDS crosspoint switch IC used for high-speed signal routing in telecom, datacom, and HDTV video systems. It supports signaling rates up to 1.5 Gbps per channel, operates from a single 3.3-V supply, and features 900-ps typical propagation delay with ≤150-ps channel-to-channel output skew.

For engineers reviewing the SN65LVDS125ADBTR datasheet, SN65LVDS125ADBTR pinout, SN65LVDS125ADBTR application, or SN65LVDS125ADBTR equivalent, key selection criteria include differential input hysteresis (25 mV), LVDS/PECL/CML input compatibility, 4:1 multiplexer per output, and operation across –40°C to 85°C.

Technical Context

The SN65LVDS125ADBTR implements fully differential internal signal paths to minimize skew and enable stable 1.5-Gbps operation. Its non-blocking architecture allows independent 4:1 input selection per output via S10–S41 control pins, with each output driver supporting LVDS-compliant differential swing (247–454 mV) and common-mode voltage (1.125–1.375 V).

Input compatibility spans LVDS, LVPECL, and CML logic families, with differential input thresholds of ±100 mV and 25-mV hysteresis. Output disable (1DE–4DE) enables individual channel tri-state control, while propagation delay variation remains ≤50 ps between rising/falling edges (tsk(p)) and ≤150 ps across channels (tsk(o)).

Key Specifications

Parameter	Value and Actual Design Meaning
Signaling Rate	Up to 1.5 Gbps per channel - supports SMPTE 292 HDTV video (1.485 Gbps) and OC-12 clock distribution (622 MHz).
Propagation Delay	700–1200 ps - ensures tight timing alignment in multi-channel clock muxing and high-speed routing applications.
Differential Output Voltage	247–454 mV - meets ANSI TIA/EIA-644-A LVDS standard for robust noise margin and interconnect integrity.
Input Voltage Threshold Hysteresis	25 mV - improves noise immunity against ground bounce and crosstalk in dense PCB layouts.
Supply Voltage Range	3.0–3.6 V - compatible with standard 3.3-V system rails and tolerant of typical power rail variation.
Operating Temperature	–40°C to +85°C - qualified for industrial and telecom infrastructure environments without derating.
Channel-to-Channel Skew	≤150 ps - enables precise phase alignment across four parallel outputs in timing-critical switching.

Pinout & Package

TSSOP-38 package (DBT), 9.75 mm × 4.45 mm × 1.2 mm max height, moisture sensitivity level 2 (260°C peak reflow, 1-year floor life).

Pin/Terminal	Circuit Role	Design Meaning
1A–4A, 1B–4B	LVDS differential input pairs	Accepts true differential signals; electrically compatible with LVPECL and CML via internal biasing.
1Y–4Y, 1Z–4Z	LVDS differential output pairs	Delivers compliant LVDS output swing (247–454 mV) and common-mode voltage (1.125–1.375 V).
1DE–4DE	Output disable control inputs	Active-high; places corresponding Y/Z output pair into high-impedance state for dynamic channel isolation.
S10–S41	Input select control bits	Two-bit per-output control (S10/S11 for output 1, etc.) selects one of four input pairs for routing.
VCC, GND	Power and ground terminals	Single 3.3-V supply; multiple VCC/GND pins reduce power delivery impedance and improve PSRR.

Key Features

Feature	Design Value
Non-blocking 4×4 crosspoint	Each output independently routes any of four differential inputs - eliminates contention in multi-source clock/data fanout.
LVDS standard compliance	Fully conforms to ANSI TIA/EIA-644-A - guarantees interoperability with industry-standard LVDS transceivers and receivers.
Multi-family input compatibility	Accepts LVDS, LVPECL, and CML signals without external level-shifting - simplifies interface design in mixed-signal systems.
Low channel skew	≤150 ps max output skew - preserves signal integrity in parallel high-speed links such as video pixel buses or SerDes lanes.
Individual output disable	Four dedicated DE pins enable per-channel shutdown - supports dynamic power management and hot-swap isolation.

Applications

Wireless Base Station Clock Distribution	HDTV Video Signal Routing
Use Scenario: Distributing synchronized clock signals from a central PLL to multiple RF transceiver ASICs in LTE/5G macro base stations. IC Role / Device Role / Timing Role: Low-skew 4×4 crosspoint switch enabling flexible clock source selection and redundancy switching between primary/backup oscillators. Use Value: ≤150 ps channel skew and 1.5-Gbps capability ensure deterministic jitter performance required for <1 ps RMS period jitter in 30.72-MHz sampling clocks.	Use Scenario: Switching uncompressed HD-SDI video streams between multiple camera inputs and encoder/monitor outputs in broadcast production switchers. IC Role / Device Role / Timing Role: High-bandwidth differential signal router handling SMPTE 292 (1.485 Gbps) serial digital video with minimal added jitter. Use Value: 65–110 ps peak-to-peak jitter at 1.5 Gbps preserves eye opening for reliable video data recovery over long backplane traces.
High-Speed Network Router Fabric	Optical Line Card Timing Muxing
Use Scenario: Interconnecting packet processing ASICs and SerDes PHYs in 10G/25G Ethernet line cards where low-latency, low-jitter signal path selection is critical. IC Role / Device Role / Timing Role: Non-blocking crosspoint enabling dynamic rerouting of reference clocks and control signals between redundant fabric paths. Use Value: 900-ps typical propagation delay and 25-mV input hysteresis maintain timing margins under high crosstalk and EMI conditions on dense router PCBs.	Use Scenario: Multiplexing multiple OC-48/STM-16 line clock references (622 MHz) onto a shared timing distribution network in SONET/SDH optical transport equipment. IC Role / Device Role / Timing Role: Precision clock mux delivering sub-150-ps skew across four outputs to feed phase-aligned clock buffers for downstream PLLs. Use Value: Differential LVDS outputs drive 100-Ω transmission lines directly, eliminating need for external termination and reducing BOM count.

Wireless Base Station Clock Distribution

HDTV Video Signal Routing

Use Scenario: Distributing synchronized clock signals from a central PLL to multiple RF transceiver ASICs in LTE/5G macro base stations.

IC Role / Device Role / Timing Role: Low-skew 4×4 crosspoint switch enabling flexible clock source selection and redundancy switching between primary/backup oscillators.

Use Value: ≤150 ps channel skew and 1.5-Gbps capability ensure deterministic jitter performance required for <1 ps RMS period jitter in 30.72-MHz sampling clocks.

Use Scenario: Switching uncompressed HD-SDI video streams between multiple camera inputs and encoder/monitor outputs in broadcast production switchers.

IC Role / Device Role / Timing Role: High-bandwidth differential signal router handling SMPTE 292 (1.485 Gbps) serial digital video with minimal added jitter.

Use Value: 65–110 ps peak-to-peak jitter at 1.5 Gbps preserves eye opening for reliable video data recovery over long backplane traces.

High-Speed Network Router Fabric

Optical Line Card Timing Muxing

Use Scenario: Interconnecting packet processing ASICs and SerDes PHYs in 10G/25G Ethernet line cards where low-latency, low-jitter signal path selection is critical.

IC Role / Device Role / Timing Role: Non-blocking crosspoint enabling dynamic rerouting of reference clocks and control signals between redundant fabric paths.

Use Value: 900-ps typical propagation delay and 25-mV input hysteresis maintain timing margins under high crosstalk and EMI conditions on dense router PCBs.

Use Scenario: Multiplexing multiple OC-48/STM-16 line clock references (622 MHz) onto a shared timing distribution network in SONET/SDH optical transport equipment.

IC Role / Device Role / Timing Role: Precision clock mux delivering sub-150-ps skew across four outputs to feed phase-aligned clock buffers for downstream PLLs.

Use Value: Differential LVDS outputs drive 100-Ω transmission lines directly, eliminating need for external termination and reducing BOM count.

Equivalent & Alternatives

The following parts are listed as comparable options for similar LVDS crosspoint switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
SN65LVDT125ADBTR	Includes integrated 110-Ω differential termination resistors on all inputs; otherwise identical pinout, timing, and electrical specs.	Reduces board space and external component count in space-constrained modules but increases input loading (90–132 Ω vs. high-Z for SN65LVDS125ADBTR).	Select SN65LVDT125ADBTR when board layout area is limited and source drivers can drive terminated loads; use SN65LVDS125ADBTR when interfacing with unterminated or high-impedance sources.
MAX9156ESE+	3.3-V 4×4 LVDS crosspoint with 1.25-Gbps max rate, 1.2-ns max propagation delay, and no integrated termination.	Lower speed ceiling and higher skew (250 ps) limit suitability to non-SMPTE/non-OC-12 applications; pinout incompatible.	Consider MAX9156ESE+ only for cost-sensitive, lower-speed (<1.25 Gbps) designs where TI's thermal or jitter specs are not required.

Compared with SN65LVDT125ADBTR, the SN65LVDS125ADBTR offers higher design flexibility for unterminated sources and tighter skew control, while the MAX9156ESE+ trades performance for broader vendor availability at reduced bandwidth - making SN65LVDS125ADBTR optimal for SMPTE 292 and OC-12 timing-critical routing.

Availability

SN65LVDS125ADBTR is available at Aetrix Electronics and suitable for wireless base station clock distribution, HDTV video switching, and high-speed network routing requiring stable component supply, full production traceability, and long-term lifecycle support.

Supply support for SN65LVDS125ADBTR 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 high-speed interface solutions with decades of expertise in signal integrity and timing devices.

The SN65LVDS125ADBTR belongs to TI's high-speed LVDS interface product line, engineered specifically for telecom infrastructure, broadcast video, and datacenter networking applications demanding sub-150-ps skew and 1.5-Gbps reliability.

FAQ

What is the maximum data rate supported by the SN65LVDS125ADBTR?

The SN65LVDS125ADBTR supports signaling rates up to 1.5 Gbps per channel, validated with 223-1 PRBS patterns and confirmed for SMPTE 292 HDTV video (1.485 Gbps) and OC-12 clock distribution (622 MHz). This rating holds across the full operating temperature range (–40°C to +85°C) and supply voltage (3.0–3.6 V).

Does the SN65LVDS125ADBTR include integrated termination resistors?

No, the SN65LVDS125ADBTR does not include integrated 110-Ω termination resistors. That feature is exclusive to the pin-compatible SN65LVDT125ADBTR variant. The SN65LVDS125ADBTR requires external 100-Ω differential termination at receiver inputs to meet ANSI TIA/EIA-644-A LVDS specifications.

Can the SN65LVDS125ADBTR accept LVPECL or CML inputs directly?

Yes, the SN65LVDS125ADBTR inputs are electrically compatible with LVPECL and CML signal levels without external level-shifting circuitry. Its input stage accepts common-mode voltages from 0 V to 3.3 V and differential swings down to ±100 mV, enabling direct connection to LVPECL (V_OH ≈ V_CC–1.3 V) and CML (V_OH ≈ V_CC–0.2 V) sources.

What is the function of the S10–S41 pins on the SN65LVDS125ADBTR?

The S10–S41 pins are 2-bit-per-output select controls: S10/S11 configure output 1 (1Y/1Z), S20/S21 configure output 2 (2Y/2Z), and so on. Each pair selects one of four input differential pairs (1A/1B through 4A/4B) to route to its associated output, implementing independent 4:1 multiplexing per channel in the SN65LVDS125ADBTR's non-blocking architecture.

How does the SN65LVDS125ADBTR handle output disable functionality?

The SN65LVDS125ADBTR provides four dedicated active-high output disable inputs (1DE–4DE), one per output pair. Asserting a DE pin places the corresponding Y/Z output pair into a high-impedance state, allowing dynamic channel isolation during system reconfiguration or fault recovery without affecting other active outputs.

SN65LVDS125ADBTR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: 65LVDS

Package/Case:: 38-TFSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: Crosspoint Switch

Circuit:: 1 x 4:4

Independent Circuits:: 1

Current - Output High, Low:: -

Voltage Supply Source:: Single Supply

Voltage - Supply:: 3V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 38-TSSOP

SN65LVDS125ADBTR FAQ

1.How can I place an order for SN65LVDS125ADBTR through Aetrix?

Please submit a Request for Quotation (RFQ) for SN65LVDS125ADBTR 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 SN65LVDS125ADBTR reliable?

The price and inventory of SN65LVDS125ADBTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65LVDS125ADBTR is usually 5 days.

3.What payment methods are accepted for SN65LVDS125ADBTR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65LVDS125ADBTR transactions.

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4.How is shipping managed for SN65LVDS125ADBTR?

SN65LVDS125ADBTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SN65LVDS125ADBTR 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 SN65LVDS125ADBTR?

For technical support, including SN65LVDS125ADBTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65LVDS125ADBTR requirements.

6.How does Aetrix verify that SN65LVDS125ADBTR is sourced from the original manufacturer or authorized distributors?

All SN65LVDS125ADBTR 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 SN65LVDS125ADBTR meets industry standards.

7.What is the process for return or replacement of SN65LVDS125ADBTR?

All SN65LVDS125ADBTR units undergo pre-shipment inspection (PSI). If there is an issue with SN65LVDS125ADBTR, 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 SN65LVDS125ADBTR part is unused and in its original packaging.

Return procedure for SN65LVDS125ADBTR:

1.Submit a request within 90 days.

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

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