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Texas Instruments SN65LVDS125ADBTRG4
- Part No.:
- SN65LVDS125ADBTRG4
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 38-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN65LVDS125ADBTRG4.pdf
- Description:
- IC CROSSPOINT SW 1 X 4:4 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,844
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Product details
Overview
SN65LVDS125ADBTRG4 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 signaling rates up to 1.5 Gbps per channel, operates from a single 3.3-V supply, features 900-ps typical propagation delay, and delivers differential output voltage of 247–454 mV with <150 ps channel-to-channel skew.
For engineers reviewing the SN65LVDS125ADBTRG4 datasheet, SN65LVDS125ADBTRG4 pinout, SN65LVDS125ADBTRG4 application, or SN65LVDS125ADBTRG4 equivalent, this page provides verified technical context, real-world timing behavior, input/output electrical characteristics, package-specific layout guidance, and validated alternative options for clock muxing and video switching designs.
Technical Context
The SN65LVDS125ADBTRG4 implements a fully differential 4×4 crosspoint architecture where each of four LVDS outputs (1Y/1Z through 4Y/4Z) can be independently routed to any of four LVDS inputs (1A/1B through 4A/4B) via dual-bit select lines (S10/S11, etc.). Its non-blocking design enables simultaneous, independent path configuration without contention.
It accepts LVDS, LVPECL, and CML input levels, includes 25-mV input hysteresis for noise immunity, and maintains steady-state common-mode output voltage between 1.125 V and 1.375 V. Unlike the SN65LVDT125A variant, it does not integrate 110-Ω termination resistors - external termination is required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Signaling Rate | Up to 1.5 Gbps per channel - supports SMPTE 292 HDTV (1.485 Gbps) and OC-12 clock distribution (622 MHz). |
| Propagation Delay | 700–1200 ps - ensures sub-nanosecond timing alignment critical for multi-channel clock fanout and video pixel routing. |
| Differential Output Voltage | 247–454 mV - meets ANSI TIA/EIA-644-A LVDS standard and drives 100-Ω differential loads reliably. |
| Input Threshold Hysteresis | 25 mV - improves noise margin against crosstalk and ground bounce in dense PCB layouts. |
| Supply Voltage | 3.0–3.6 V - single 3.3-V rail simplifies power delivery; no 5-V or dual-supply support. |
| Operating Temperature | −40°C to +85°C - qualified for industrial and telecom infrastructure environments. |
| Channel-to-Channel Skew | ≤150 ps - enables precise phase alignment across multiple outputs in parallel data paths. |
Pinout & Package
TSSOP-38 (DBT) package: 38-pin thin shrink small-outline package, 9.7 mm × 4.4 mm × 1.2 mm max height, moisture sensitivity level 2 (260°C peak reflow), RoHS-compliant NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A–4A, 1B–4B | LVDS differential input pairs | Accepts true LVDS, LVPECL, or CML signals; common-mode range 0–3.3 V; VID ≥100 mV required for valid switching. |
| 1Y–4Y, 1Z–4Z | LVDS differential output pairs | Delivers compliant LVDS output (VOD = 247–454 mV, VOC = 1.125–1.375 V); requires external 100-Ω termination. |
| 1DE–4DE | Output disable control inputs | Active-high logic disables corresponding Y/Z driver into high-impedance state; IOZ ≤ ±1 µA when disabled. |
| S10–S41 | 2-bit crosspoint select inputs | Each pair (e.g., S10/S11) configures routing for one output (e.g., 1Y/1Z) to select among inputs 1A/1B, 2A/2B, 3A/3B, or 4A/4B. |
| VCC, GND | Power and ground terminals | Single 3.3-V supply; 12 dedicated VCC pins and 14 GND pins minimize IR drop and improve PSRR in high-speed operation. |
Key Features
| Feature | Design Value |
|---|---|
| Non-blocking 4×4 crosspoint | Enables independent, concurrent routing of all four outputs to any input without path conflict or arbitration delay. |
| LVDS compliance | Fully conforms to ANSI TIA/EIA-644-A, ensuring interoperability with industry-standard LVDS transceivers and receivers. |
| Low-skew differential signaling | ≤150 ps channel-to-channel output skew and ≤50 ps pulse skew preserve timing integrity in parallel bus or clock tree applications. |
| Multi-standard input compatibility | Accepts LVDS, LVPECL, and CML logic levels on same inputs - eliminates need for level-shifting circuitry in mixed-signal systems. |
| High-speed enable/disable | tPHZ/tPLZ ≤ 6 ns and tPZH/tPZL ≤ 300 ns allow dynamic output gating without disrupting adjacent channels. |
Applications
| Wireless Base Station Clock Distribution | HDTV Video Signal Switching |
|---|---|
Use Scenario: Routing multiple OC-12 or CPRI clock sources to diverse RF front-end modules within a macrocell BTS. IC Role / Device Role / Timing Role: Low-skew LVDS crosspoint switch providing deterministic, jitter-controlled clock fanout and source selection. Use Value: Enables hot-swappable clock source redundancy and synchronized multi-carrier timing with <150 ps inter-channel skew. |
Use Scenario: Switching uncompressed HD-SDI video streams between camera inputs, processing pipelines, and display outputs in broadcast equipment. IC Role / Device Role / Timing Role: High-bandwidth 4×4 differential video router supporting SMPTE 292 (1.485 Gbps) data rates. Use Value: Maintains eye diagram integrity at 1.5 Gbps with <110 ps peak-to-peak jitter, preserving video pixel timing and reducing bit error rate. |
| High-Speed Network Router Backplane | Test Equipment Signal Path Control |
Use Scenario: Managing differential data lanes between line cards and switch fabric ASICs in 10G Ethernet or OTN systems. IC Role / Device Role / Timing Role: Reconfigurable LVDS signal path selector enabling flexible port mapping and diagnostics. Use Value: Supports 1.5 Gbps per lane with <50 ps pulse skew, minimizing SERDES deskew overhead and easing PCB trace length matching. |
Use Scenario: Automating signal routing between arbitrary instrument channels (e.g., pattern generator, scope, analyzer) in ATE platforms. IC Role / Device Role / Timing Role: Precision-controlled differential multiplexer for calibration-grade signal path switching. Use Value: Delivers <3 ps rms period jitter and <13 ps cycle-to-cycle jitter - critical for low-noise parametric measurement accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LVDS crosspoint switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65LVDT125ADBTRG4 | Integrates internal 110-Ω differential termination resistors; otherwise identical pinout, timing, and logic. | Reduces external component count in space-constrained designs but increases power dissipation by ~15 mA per active channel. | Select SN65LVDT125ADBTRG4 when board area is premium and termination resistor placement is impractical; verify thermal budget. |
| MAX9154ESE+ | 4×4 LVDS crosspoint with 2.5-Gbps capability, integrated terminations, and 3.3-V/5-V dual-supply support. | Supports higher data rates and mixed-voltage systems but uses SOIC-28 package (fewer pins, no separate DE controls per output). | Choose MAX9154ESE+ only if >1.5 Gbps operation or 5-V interface compatibility is required; not pin-compatible. |
Compared with SN65LVDT125ADBTRG4, the SN65LVDS125ADBTRG4 saves board space by omitting internal terminations - ideal when external 100-Ω routing is already optimized. Versus MAX9154ESE+, it offers finer per-output enable control and lower jitter at 1.5 Gbps, but lacks 5-V tolerance and higher-rate headroom.
Availability
SN65LVDS125ADBTRG4 is available at Aetrix Electronics and suitable for wireless base station clock distribution, HDTV video switching, high-speed network routing, and automated test equipment requiring stable component supply and guaranteed long-term sourcing.
Supply support for SN65LVDS125ADBTRG4 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 SN65LVDS125ADBTRG4 belongs to TI's high-speed LVDS interface product line, engineered specifically for low-jitter, low-skew signal routing in telecom infrastructure, broadcast video, and test instrumentation.
FAQ
What is the maximum data rate supported by the SN65LVDS125ADBTRG4?
The SN65LVDS125ADBTRG4 is characterized for reliable operation up to 1.5 Gbps per channel, validated using 223-1 PRBS patterns and meeting SMPTE 292 (1.485 Gbps) requirements. At this rate, peak-to-peak jitter remains ≤110 ps under nominal conditions (VCC = 3.3 V, TA = 25°C, VIC = 1.2 V). Operation beyond 1.5 Gbps is not specified and may compromise signal integrity.
Does the SN65LVDS125ADBTRG4 include integrated termination resistors?
No, the SN65LVDS125ADBTRG4 does not integrate termination resistors. It requires external 100-Ω differential termination at each output (Y/Z pair). In contrast, the pin-compatible SN65LVDT125ADBTRG4 integrates 110-Ω terminations - confirmed in the "Integrated 110-Ω Termination on LVDT Only" note and electrical specs table.
Can the SN65LVDS125ADBTRG4 accept LVPECL or CML inputs?
Yes, the SN65LVDS125ADBTRG4 inputs are electrically compatible with LVPECL and CML signal levels in addition to LVDS, as explicitly stated in the Features section and verified in the Input Electrical Characteristics table (VIH/VIL ranges and differential input voltage thresholds apply across standards).
What is the function of the S10–S41 pins on the SN65LVDS125ADBTRG4?
The S10–S41 pins are 2-bit binary select inputs that configure routing for each output: S10/S11 control output 1Y/1Z, S20/S21 control 2Y/2Z, and so on. As shown in Table 1 (CROSSPOINT LOGIC TABLES), each pair selects one of four input pairs (1A/1B through 4A/4B) - enabling full non-blocking 4×4 path assignment.
Is the SN65LVDS125ADBTRG4 pin-compatible with the SN65LVDT125ADBTRG4?
Yes, the SN65LVDS125ADBTRG4 and SN65LVDT125ADBTRG4 share identical TSSOP-38 (DBT) packaging, pin numbering, pin functions, and logic behavior. The sole functional difference is the presence of integrated 110-Ω terminators in the SN65LVDT125ADBTRG4 - all other electrical, timing, and control characteristics match exactly.
SN65LVDS125ADBTRG4 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:
- Discontinued at Digi-Key
- 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
SN65LVDS125ADBTRG4 FAQ
1.How can I place an order for SN65LVDS125ADBTRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65LVDS125ADBTRG4 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 SN65LVDS125ADBTRG4 reliable?
The price and inventory of SN65LVDS125ADBTRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65LVDS125ADBTRG4 is usually 5 days.
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Once your SN65LVDS125ADBTRG4 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 SN65LVDS125ADBTRG4?
For technical support, including SN65LVDS125ADBTRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65LVDS125ADBTRG4 requirements.
6.How does Aetrix verify that SN65LVDS125ADBTRG4 is sourced from the original manufacturer or authorized distributors?
All SN65LVDS125ADBTRG4 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 SN65LVDS125ADBTRG4 meets industry standards.
7.What is the process for return or replacement of SN65LVDS125ADBTRG4?
All SN65LVDS125ADBTRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN65LVDS125ADBTRG4, 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 SN65LVDS125ADBTRG4 part is unused and in its original packaging.
Return procedure for SN65LVDS125ADBTRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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