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Home Products Integrated Circuits (ICs)Logic - Signal Switches, Multiplexers, Decoders~~SN65LVDT125ADBTR~~

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SN65LVDT125ADBTR - Texas Instruments

Name: Texas Instruments SN65LVDT125ADBTR
Brand: Texas Instruments
SKU: SN65LVDT125ADBTR
Availability: InStock
Rating: 5 (2 reviews)

Manufacturer Part Number: SN65LVDT125ADBTR

Manufacturer: Texas Instruments

Allelco Part Number: 98D-SN65LVDT125ADBTR

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 13,278 pcs available, New & Original

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

Package: 38-TSSOP

Data sheet: SN65LVDT125ADBT.pdf

HTML Datasheet
SN65LVDS125A, SN65LVDT125A.pdf

RoHs Status: ROHS3 Compliant

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In stock: 13278

Specifications

SN65LVDT125ADBTR Tech Specifications
Texas Instruments - SN65LVDT125ADBTR technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - SN65LVDT125ADBTR

Product Attribute	Attribute Value
Manufacturer	Texas Instruments
Voltage Supply Source	Single Supply
Voltage - Supply	3V ~ 3.6V
Type	Crosspoint Switch
Supplier Device Package	38-TSSOP
Series	65LVDT
Package / Case	38-TFSOP (0.173", 4.40mm Width)

Product Attribute	Attribute Value
Package	Tape & Reel (TR)
Operating Temperature	-40°C ~ 85°C
Mounting Type	Surface Mount
Independent Circuits	1
Current - Output High, Low	-
Circuit	1 x 4:4
Base Product Number	65LVDT125

Environmental & Export Classifications

ATTRIBUTE	DESCRIPTION
RoHs Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	2 (1 Year)
REACH Status	REACH Unaffected
ECCN	5A991B1
HTSUS	8542.39.0001

Frequently Asked Questions(FAQ)

How does the SN65LVDT125ADBTR handle signal integrity when routing four differential pairs through a single crosspoint switch in high-speed serial applications?: The SN65LVDT125ADBTR supports 1x4:4 crosspoint switching with integrated termination and low skew architecture, enabling it to maintain signal integrity across multiple differential channels. Its design minimizes crosstalk and insertion loss when distributing signals from one input to any of four outputs, which is critical in systems requiring flexible routing without external buffering. This makes it suitable for LVDS-based backplanes or modular I/O expansion where signal degradation must be controlled below typical thresholds observed in multi-drop environments.

What are the key differences between the SN65LVDT125ADBTR and SN65LVDS125ADBTR in terms of circuit topology and power delivery?: While both parts share a similar base product number (65LVDT125), the SN65LVDT125ADBTR implements a true crosspoint switch architecture optimized for dynamic routing between one input and up to four outputs, whereas the SN65LVDS125ADBTR typically functions as a fixed-direction transceiver pair. The LVDT variant supports single-supply operation at 3V–3.6V and includes internal termination that reduces component count, making it more appropriate for reconfigurable signaling paths. In contrast, the LVDS version often requires external biasing and lacks the matrix flexibility needed for non-blocking switching topologies.

Can the SN65LVDT125ADBTR be used in automotive-grade temperature ranges, and what modifications would be necessary?: No, the SN65LVDT125ADBTR is specified for commercial industrial temperatures (-40°C to +85°C). For extended temperature operation beyond this range—such as in automotive applications—a qualified alternative from the 65LVDT family or a different device class would be required. Using this part outside its thermal envelope risks parametric drift and functional failure due to degraded transistor performance at elevated junction temperatures, particularly affecting propagation delay and output drive strength.

What is the impact of supply voltage variation on propagation delay for the SN65LVDT125ADBTR when driving capacitive loads?: Within the 3V to 3.6V supply window, the SN65LVDT125ADBTR exhibits minimal variation in propagation delay, typically under ±5% over the full range. However, as load capacitance increases—especially above 10pF per output—the rise and fall times extend nonlinearly, which can degrade timing margins in synchronous systems. Designers should account for this interaction by limiting fan-out or inserting buffer stages when driving long traces or multiple receivers.

How does the SN65LVDT125ADBTR compare to discrete multiplexer solutions in terms of board area and signal fidelity?: Compared to discrete MUX implementations using general-purpose switches, the SN65LVDT125ADBTR integrates matched impedance paths, built-in termination resistors, and controlled slew rates, resulting in better eye diagram performance and reduced EMI. It also saves approximately 30–50% of layout area versus discrete alternatives due to elimination of external components and simplified routing. However, it lacks hot-swapping capability and may not support bidirectional data flow without additional logic.

Is it feasible to daisy-chain multiple instances of the SN65LVDT125ADBTR to create larger crossbar fabrics?: Direct daisy-chaining of SN65LVDT125ADBTR devices is not supported due to its unidirectional 1x4 architecture and lack of cascading enable pins. To build larger matrices, system designers typically combine multiple units with external control logic or opt for higher-density crosspoint ICs such as the SN65LVDT250DBTR, which offers dual 1x4 channels per package. Attempting to cascade without proper isolation risks bus contention and undefined output states during transition periods.

What precautions should be taken when routing adjacent signals near the SN65LVDT125ADBTR’s differential traces to avoid coupling-induced jitter?: Maintain a minimum spacing of three times the trace width between differential pairs routed through the SN65LVDT125ADBTR and adjacent high-speed nets to reduce crosstalk below -40dB. Use ground shielding vias around sensitive routes and keep return paths uninterrupted beneath the signal layer. Improper spacing can induce common-mode noise that exceeds the receiver’s noise margin, increasing bit error rates especially at data rates approaching 655 Mbps per channel.

Does the SN65LVDT125ADBTR support partial reconfiguration during runtime, and how does this affect system initialization sequences?: Yes, the SN65LVDT125ADBTR allows real-time reassignment of the active output port without requiring reset or power cycling, provided the selected path remains within electrical specifications. However, abrupt switching during data transmission can cause transient glitches due to internal settling time. System firmware should implement handshake protocols or pause data streams before reconfiguration to prevent corrupted packets, particularly important in live video or packetized communication links.

How does the moisture sensitivity level (MSL) rating of the SN65LVDT125ADBTR influence reflow soldering practices?: Classified as MSL 2, the SN65LVDT125ADBTR must be stored under dry conditions and assembled within one year of exposure to ambient humidity. After opening the moisture barrier, it should undergo bake-out if stored longer than 168 hours before reflow. Following standard JEDEC J-STD-020 profiles ensures reliability; exceeding peak temperature or dwell time accelerates die stress and risk of popcorning during thermal cycling.

What role does the internal termination play in the SN65LVDT125ADBTR’s power consumption profile compared to externally terminated designs?: The SN65LVDT125ADBTR includes integrated 100Ω differential termination resistors, reducing the need for discrete components and associated stub reflections. While this lowers overall system power slightly by eliminating resistor bias currents, it slightly increases quiescent current since the terminations are always active—typically adding ~5mA per channel compared to open-drain configurations. This trade-off favors simplicity over ultra-low-power designs but maintains consistent signal quality across all enabled paths.

Can the SN65LVDT125ADBTR operate in half-duplex mode, and what constraints apply to simultaneous transmit/receive scenarios?: No, the SN65LVDT125ADBTR is fundamentally a unidirectional crosspoint switch designed for one-way signal distribution only. Attempting bidirectional communication by toggling direction rapidly introduces contention unless accompanied by protocol-level arbitration or physical separation via time-division multiplexing. Simultaneous use of input and output simultaneously without isolation leads to signal reflection and potential damage to output drivers due to back-driving.

How does the SN65LVDT125ADBTR perform under ESD events, and what PCB layout considerations enhance its robustness?: The device meets HBM ESD protection levels per its datasheet but relies heavily on system-level design for effective discharge handling. Place TVS diodes near connectors and ensure continuous ground plane connectivity around the 38-TSSOP footprint. Avoid narrow traces or vias in series with differential pairs, as these become choke points for discharge currents. Proper decoupling within 1cm of VCC improves local stability during transient events.

Are there known limitations in using the SN65LVDT125ADBTR for FPGAs requiring dynamic partial reconfiguration interfaces?: The SN65LVDT125ADBTR does not include FPGA-specific features like configuration memory or I/O bank isolation, so direct use for FPGA partial reconfiguration is impractical. Instead, it can serve as a pre-switching stage for routing FPGA-generated LVDS test patterns or diagnostic signals to shared instruments. For actual configuration data transfer, dedicated transceivers or PCIe/SerDes blocks are preferred due to timing precision and error detection requirements.

What is the significance of the HTSUS classification (8542.39.0001) for the SN65LVDT125ADBTR in global trade compliance?: This Harmonized Tariff Schedule code identifies the part as an electronic integrated circuit under U.S. customs regulations, typically subject to moderate duty rates unless exempted under specific trade agreements. Accurate classification aids in cost forecasting and import documentation, though regional interpretations may vary. Misclassification could delay shipments or result in penalties during audits, particularly when sourcing from non-US manufacturers.

How does the ECCN (5A991B1) designation affect export controls for the SN65LVDT125ADBTR when shipping internationally?: Assigned ECCN 5A991B1, this part falls under “mass market” electronics with no special encryption controls, meaning it generally qualifies for license exception ENC (Encryption Commodities, Software, and Technology). However, end-use verification is still recommended, especially when deployed in defense-related infrastructure, to avoid inadvertent violations of foreign policy restrictions.

What alternatives exist if the SN65LVDT125ADBTR cannot meet a project’s channel count or density requirements?: When higher channel density is needed, consider the SN65LVDT250DBTR, which provides dual 1x4 crosspoints in the same 38-pin package. Alternatively, multi-chip modules or FPGA-based soft switches offer greater flexibility but increase complexity. Substitute options like SN65LVDS250DBTR lack true crosspoint functionality and thus require external arbitration logic for similar topologies.

How does operating temperature affect propagation skew between channels in the SN65LVDT125ADBTR?: Over the -40°C to +85°C range, the SN65LVDT125ADBTR maintains channel-to-channel skew below 0.5ns, critical for maintaining setup and hold margins in parallel data paths. At extreme temperatures, process variations widen mismatch tolerances, potentially degrading timing budgets in synchronous systems. Thermal gradients across the PCB exacerbate this effect, necessitating uniform airflow or symmetric placement during stress testing.

What design considerations arise when integrating the SN65LVDT125ADBTR into a mixed-signal environment with analog front ends?: Isolate digital return currents from analog grounds using split planes connected at a single point near the power entry. Route LVDS traces orthogonal to sensitive analog lines and avoid crossing split boundaries. Ensure adequate bypass capacitance (e.g., 100nF MLCC plus 10μF bulk) near each VCC pin to suppress switching noise coupling into nearby AFE circuits, preserving SNR and linearity.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments SN65LVDT125ADBTR

Product Attribute
Part Number	SN65LVDT125ADBTRG4	SN65LVDT125ADBT	SN65LVDT125ADBTG4	SN65LVDT125DBT
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments	Texas Instruments
Package / Case	-	196-LFBGA	16-DIP (0.300', 7.62mm)	64-VFQFN Exposed Pad
Mounting Type	-	Surface Mount	Through Hole	Surface Mount
Current - Output High, Low	-	-	-	-
Independent Circuits	-	-	-	-
Circuit	-	-	-	-
Series	-	-	-	-
Package	-	Tape & Reel (TR)	Tube	Tape & Reel (TR)
Type	-	-	-	-
Operating Temperature	-	-40°C ~ 85°C	0°C ~ 70°C	-40°C ~ 85°C
Supplier Device Package	-	196-NFBGA (12x12)	16-PDIP	64-VQFN (9x9)
Voltage Supply Source	-	-	-	-
Base Product Number	-	DAC34H84	MAX500	ADS62P42
Voltage - Supply	-	-	-	-

SN65LVDT125ADBTR Datasheet PDF

Download SN65LVDT125ADBTR pdf datasheets and Texas Instruments documentation for SN65LVDT125ADBTR - Texas Instruments.

HTML Datasheet: SN65LVDS125A, SN65LVDT125A.pdf

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Customer Reviews

Evaluation: 10 Articles

Dani***alkerTech

Jun 1, 2026

Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.
Yuki***aka88

May 26, 2026

信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。
Stev***aker

May 20, 2026

Solid diode for power rectification. Works well in switching circuits.
Bran***Lewis

May 11, 2026

Compact FPGA with good performance. Suitable for basic signal processing tasks.
Oliv***arris

May 7, 2026

Reliable I/O expander. Works well in embedded control applications.
Jess***Jones

Apr 17, 2026

It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.
Mich***Smith

Apr 17, 2026

Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.
Aman***arris

Apr 3, 2026

It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.
Mike***nch

Apr 3, 2026

Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.
Daic***K.

Mar 23, 2026

Very good. No issue after long time testing.

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America	United States	5
America	Brazil	7
Europe	Germany	5
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Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	Japan	4
Middle East	Israel	6

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