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Texas Instruments SN65LVDT125ADBTR
- Part No.:
- SN65LVDT125ADBTR
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 38-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN65LVDT125ADBTR.pdf
- Description:
- IC CROSSPOINT SW 1 X 4:4 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,652
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Product details
Overview
SN65LVDT125ADBTR from Texas Instruments is a 4×4 non-blocking LVDS crosspoint switch IC designed for high-speed signal routing in telecom, datacom, and HDTV video systems. It supports 1.5 Gbps per channel signaling, operates from a single 3.3-V supply, incorporates integrated 110-Ω termination resistors on all outputs, and delivers <900 ps typical propagation delay with <150 ps channel-to-channel skew - enabling precise clock muxing and SMPTE 292-compliant video switching.
For engineers reviewing the SN65LVDT125ADBTR datasheet, SN65LVDT125ADBTR pinout, SN65LVDT125ADBTR application, or SN65LVDT125ADBTR equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative parts with functional distinctions, and supply-ready availability details - all grounded in TI's SLLS595C (June 2011) production datasheet and official packaging documentation.
Technical Context
The SN65LVDT125ADBTR implements a fully differential 4×4 crosspoint architecture with independent 4:1 multiplexers per output, allowing any input pair (1A/1B–4A/4B) to be routed to any output pair (1Y/1Z–4Y/4Z) via dedicated S10–S41 control pins. Its internal signal paths maintain strict differential integrity to minimize skew and support OC-12 (622 MHz) and SMPTE 292 (1.485 Gbps) timing requirements.
Unlike the pin-compatible SN65LVDS125A, the SN65LVDT125ADBTR integrates 110-Ω termination resistors on all eight output terminals (1Y/1Z through 4Y/4Z), eliminating external termination components and reducing board space - critical for dense routing in wireless base stations and high-speed network switches.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Signaling Rate | 1.5 Gbps per channel - enables SMPTE 292 HDTV video transport and OC-12 clock distribution without retiming. |
| Propagation Delay | 900 ps typical - ensures sub-nanosecond timing alignment across all four outputs for synchronous clock fanout. |
| Channel Skew | 150 ps max - guarantees deterministic phase relationship between routed signals in multi-lane interfaces. |
| Input Threshold Hysteresis | 25 mV - improves noise immunity against EMI in noisy telecom backplanes and industrial routing chassis. |
| Integrated Termination | 110 Ω ±10% on all outputs - removes need for eight external 110-Ω resistors, saving PCB area and BOM cost. |
| Supply Voltage | 3.3 V ±10% - compatible with standard LVDS I/O rails and simplifies power delivery versus dual-supply alternatives. |
| Operating Temperature | –40°C to +85°C - qualified for deployment in outdoor wireless base stations and industrial network equipment. |
Pinout & Package
TSSOP-38 package (DBT), 9.7 mm × 4.4 mm × 1.2 mm height, moisture sensitivity level 2 (260°C peak reflow), RoHS-compliant NIPDAU finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A–4A, 1B–4B | LVDS differential input pairs | Accepts LVDS, LVPECL, and CML inputs; common-mode range 0–3.3 V supports mixed-signal interconnect. |
| 1Y–4Y, 1Z–4Z | LVDS differential output pairs | Each pair includes integrated 110-Ω termination to ground; delivers 247–454 mV differential swing into 100-Ω loads. |
| 1DE–4DE | Output disable controls | Active-low enables high-impedance state on corresponding Y/Z pair; supports dynamic output gating in routing applications. |
| S10–S41 | 4-bit select inputs per output | Two bits per output (e.g., S10/S11 for 1Y/1Z) configure 4:1 mux routing; non-blocking logic allows concurrent independent path assignments. |
| VCC, GND | Power and ground | Single 3.3-V supply; 38-pin layout includes multiple VCC/GND pairs to reduce simultaneous switching noise (SSN). |
Key Features
| Feature | Design Value |
|---|---|
| Non-blocking 4×4 crosspoint | Enables full connectivity matrix: any input can drive any output simultaneously without contention or arbitration delay. |
| Integrated 110-Ω termination | Reduces component count by eight resistors per device; eliminates layout-sensitive external termination networks. |
| 25-mV input hysteresis | Suppresses false switching from crosstalk or ground bounce in high-density routing boards with >100 signal layers. |
| Sub-1-ns propagation delay | Maintains tight timing budgets in 10-GbE switch fabrics and multi-gigabit SerDes clock distribution trees. |
| LVDS/PECL/CML compatibility | Accepts industry-standard differential logic families without level-shifting, simplifying interface to FPGAs, ASICs, and PHYs. |
Applications
| Wireless Base Station Clock Routing | HDTV Video Signal Switching |
|---|---|
Use Scenario: Dynamic selection of reference clocks among multiple RF transceivers in LTE/5G macro base stations. IC Role / Device Role / Timing Role: 4×4 crosspoint switch routes OC-12 (622 MHz) or 1.485-GHz SMPTE clocks between synthesizers and radio units. Use Value: Integrated 110-Ω termination reduces PCB footprint by >12 mm² per output and eliminates termination resistor placement errors affecting jitter. |
Use Scenario: Real-time switching of HD-SDI video streams between camera inputs, processing pipelines, and display outputs in broadcast equipment. IC Role / Device Role / Timing Role: LVDS crosspoint routes 1.485-Gbps SMPTE 292 signals with <150-ps skew to preserve eye integrity across four parallel paths. Use Value: 1.5-Gbps capability exceeds SMPTE 292 requirement (1.485 Gbps), ensuring margin for cable loss and connector degradation over system lifetime. |
| High-Speed Network Router Fabric | Test Equipment Signal Path Control |
Use Scenario: Configurable interconnection of line cards and switch fabric interfaces in 10-GbE and OTN routers. IC Role / Device Role / Timing Role: Non-blocking switch enables on-the-fly reconfiguration of clock and data lanes during failover or maintenance. Use Value: Sub-1-ns propagation delay and <50-ps pulse skew ensure deterministic latency across all routed paths, critical for time-sensitive networking (TSN). |
Use Scenario: Automated signal path selection in high-frequency oscilloscopes, bit error rate testers (BERTs), and protocol analyzers. IC Role / Device Role / Timing Role: Routes calibrated reference clocks and test stimuli between instrument modules with minimal added jitter (<110 ps pk-pk at 1.5 Gbps). Use Value: Low deterministic jitter (56–90 ps pk-pk) preserves signal fidelity during path switching, avoiding measurement uncertainty introduced by routing ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LVDS crosspoint switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65LVDS125ADBTR | No integrated termination resistors; requires eight external 110-Ω resistors. | Better suited when board layout allows discrete termination or when termination values must be tuned per channel. | Select SN65LVDS125ADBTR if external termination is preferred for thermal management or impedance tuning. |
| MAX9119EEE+ | 3×3 crosspoint, 800 Mbps max rate, no integrated termination, ±5-V tolerant enable pins. | Limited to lower-speed applications like legacy SDI or industrial control buses where 1.5-Gbps is unnecessary. | Choose MAX9119EEE+ only for cost-sensitive, lower-bandwidth designs where 4×4 capacity and 1.5-Gbps performance are not required. |
Compared with SN65LVDS125ADBTR, SN65LVDT125ADBTR saves board space and assembly steps via integrated termination but trades off flexibility in termination value adjustment; compared with MAX9119EEE+, it delivers double the port count and nearly double the data rate - making it essential for modern HDTV and 5G infrastructure.
Availability
SN65LVDT125ADBTR is available at Aetrix Electronics and suitable for wireless base station clock routing, HDTV video switching, high-speed network routing, and automated test equipment requiring stable component supply across extended product lifecycles.
Supply support for SN65LVDT125ADBTR 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 products.
The SN65LVDT125ADBTR belongs to TI's LVDS interface portfolio, engineered specifically for high-reliability, high-bandwidth signal routing in telecom infrastructure, broadcast video, and test instrumentation where deterministic timing and low jitter are mandatory.
FAQ
What is the maximum data rate supported by the SN65LVDT125ADBTR?
The SN65LVDT125ADBTR supports a maximum signaling rate of 1.5 Gbps per channel, validated with 223-1 PRBS patterns and confirmed in TI's SLLS595C datasheet. This rate meets SMPTE 292 (1.485 Gbps) and OC-12 (622 MHz) requirements, and the SN65LVDT125ADBTR maintains <110 ps peak-to-peak jitter at full speed - ensuring robust operation in HDTV and telecom timing applications.
Does the SN65LVDT125ADBTR require external termination resistors?
No, the SN65LVDT125ADBTR integrates 110-Ω termination resistors on all eight output terminals (1Y/1Z through 4Y/4Z), as specified in the "INPUT ELECTRICAL CHARACTERISTICS" table of the SLLS595C datasheet. This eliminates the need for external termination, reducing PCB area and component count - a key differentiator from the SN65LVDS125ADBTR, which lacks integrated termination.
What is the operating temperature range for the SN65LVDT125ADBTR?
The SN65LVDT125ADBTR is characterized for operation from –40°C to +85°C, as stated in the "RECOMMENDED OPERATING CONDITIONS" section of the TI datasheet. This industrial-grade range supports deployment in outdoor wireless base stations, network edge routers, and broadcast equipment exposed to wide ambient variations - and the SN65LVDT125ADBTR maintains full 1.5-Gbps performance across this entire range.
How does the SN65LVDT125ADBTR handle input signal compatibility?
The SN65LVDT125ADBTR accepts LVDS, LVPECL, and CML input levels without external level shifting, thanks to its wide common-mode input range (0 V to 3.3 V) and 25-mV hysteresis. Per the "INPUT ELECTRICAL CHARACTERISTICS" table, it tolerates differential inputs from ±100 mV up to ±400 mV - making the SN65LVDT125ADBTR interoperable with diverse FPGA transceivers, ASIC I/O banks, and legacy PECL clock sources.
What package type and moisture sensitivity level does the SN65LVDT125ADBTR use?
The SN65LVDT125ADBTR uses a TSSOP-38 (DBT) package measuring 9.7 mm × 4.4 mm × 1.2 mm, with NIPDAU lead finish and moisture sensitivity level (MSL) 2 rated for 260°C peak reflow. This is documented in TI's PACKAGE OPTION ADDENDUM, and the SN65LVDT125ADBTR ships in large tape-and-reel format (2000 units/reel), optimized for automated SMT assembly in high-volume production.
SN65LVDT125ADBTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 65LVDT
- Package/Case:
- 38-TFSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
SN65LVDT125ADBTR FAQ
1.How can I place an order for SN65LVDT125ADBTR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65LVDT125ADBTR 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 SN65LVDT125ADBTR reliable?
The price and inventory of SN65LVDT125ADBTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65LVDT125ADBTR is usually 5 days.
3.What payment methods are accepted for SN65LVDT125ADBTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65LVDT125ADBTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN65LVDT125ADBTR?
SN65LVDT125ADBTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65LVDT125ADBTR 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 SN65LVDT125ADBTR?
For technical support, including SN65LVDT125ADBTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65LVDT125ADBTR requirements.
6.How does Aetrix verify that SN65LVDT125ADBTR is sourced from the original manufacturer or authorized distributors?
All SN65LVDT125ADBTR 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 SN65LVDT125ADBTR meets industry standards.
7.What is the process for return or replacement of SN65LVDT125ADBTR?
All SN65LVDT125ADBTR units undergo pre-shipment inspection (PSI). If there is an issue with SN65LVDT125ADBTR, 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 SN65LVDT125ADBTR part is unused and in its original packaging.
Return procedure for SN65LVDT125ADBTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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