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Texas Instruments SN65LVDS250DBTRG4
- Part No.:
- SN65LVDS250DBTRG4
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 38-TFSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN65LVDS250DBTRG4.pdf
- Description:
- IC CROSSPOINT SW 1 X 4:4 38TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,578
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Product details
Overview
SN65LVDS250DBTRG4 from Texas Instruments is a 4×4 nonblocking LVDS crosspoint switch with flow-through pinout, supporting >2.0 Gbps data rates, 800 ps typical propagation delay, and 60 ps typical peak-to-peak jitter at 2.0 Gbps. It operates from a single 3.3-V supply and integrates no on-die termination resistors-designed for high-speed clock muxing and signal routing in telecom infrastructure.
For engineers reviewing the SN65LVDS250DBTRG4 datasheet, SN65LVDS250DBTRG4 pinout, SN65LVDS250DBTRG4 application, or SN65LVDS250DBTRG4 equivalent, this page delivers verified electrical specs, validated package mapping, confirmed pin functions, real-world timing behavior, and two technically documented alternative parts for signal integrity–critical routing designs.
Technical Context
The SN65LVDS250DBTRG4 implements a fully differential 4×4 crosspoint architecture with independent 4:1 multiplexers per output channel (1Y/1Z through 4Y/4Z), enabling any input pair (1A/1B to 4A/4B) to be routed to any output without blocking. Control is performed via dual-bit select lines (S10/S11, S20/S21, etc.) and enable inputs (1DE–4DE), with setup/hold times of 0.6 ns and 0.2 ns respectively.
It accepts LVDS, LVPECL, and CML input levels across a common-mode range of 0–3.3 V, features 25 mV differential input hysteresis, and delivers LVDS-compliant outputs (ANSI TIA/EIA-644-A) with 247–454 mV differential swing and 1.125–1.375 V steady-state common-mode voltage. No internal 110-Ω termination-unlike the SN65LVDT250 variant-is present.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | >2.0 Gbps - supports 2.5 Gbps operation with 110 ps typical pk-pk jitter; validated with PRBS2^23−1 pattern |
| Propagation Delay | 700–1200 ps - low skew (≤50 ps pulse skew, ≤175 ps channel-to-channel skew) enables precise timing alignment |
| Differential Output Swing | 247–454 mV - meets LVDS standard compliance and ensures robust noise margin over 100-Ω loads |
| Supply Current | 110 mA typical - low-power operation at 3.3 V enables dense board layouts without thermal derating concerns |
| Input Compatibility | LVDS/LVPECL/CML - accepts differential inputs with |VID| ≥ 100 mV and common-mode range 0–3.3 V |
| Operating Temperature | −40°C to +85°C - qualified for industrial and telecom base station environments |
| Jitter Performance | 60 ps pk-pk @ 2.0 Gbps - deterministic jitter limited to 48–65 ps; critical for serial link BER <1e−12 |
Pinout & Package
SN65LVDS250DBTRG4 is housed in a 38-pin TSSOP (DBT) package, 9.7 mm × 4.4 mm × 1.2 mm max height, with 0.5-mm lead pitch and moisture sensitivity level MSL-2 (260°C peak reflow).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1A, 1B – 4A, 4B | Differential Input Pairs | Four LVDS/LVPECL/CML-compatible input channels; each pair drives one internal mux |
| 1Y, 1Z – 4Y, 4Z | Differential Output Pairs | Four LVDS-compliant output drivers; fully differential paths minimize skew and EMI |
| S10, S11 – S40, S41 | Mux Select Inputs | Two-bit binary control per output (e.g., S10/S11 selects source for 1Y/1Z: 00→1A/1B, 11→4A/4B) |
| 1DE – 4DE | Output Enable Inputs | Active-high enables; disables corresponding Y/Z driver into high-Z state with ±1 µA leakage |
| VCC, GND | Power & Ground | Single 3.3-V supply; 12 dedicated pins (6 VCC, 6 GND) ensure low-impedance return paths for high-speed switching |
Key Features
| Feature | Design Value |
|---|---|
| Nonblocking 4×4 Crosspoint | Each output independently routes to any input-no contention or arbitration logic required |
| Flow-Through Pinout | Input and output pins aligned on opposite sides simplifies PCB trace routing and reduces layer count |
| Low Skew Architecture | ≤175 ps channel-to-channel output skew ensures deterministic timing across all four outputs |
| Multi-Standard Input Support | Accepts LVDS, LVPECL, and CML signals without external level-shifting circuitry |
| High-Speed Jitter Control | 60 ps typical pk-pk jitter at 2.0 Gbps enables reliable operation in 2.5G/3G serial links |
Applications
| Wireless Base Station Backhaul | Clock Distribution in Routers |
|---|---|
|
Use Scenario: Routing multiple 2.5-Gbps CPRI or OBSAI data streams between RF units and baseband processors. IC Role / Device Role / Timing Role: Signal path selector enabling dynamic reconfiguration of fronthaul links without physical rewiring. Use Value: Eliminates need for discrete muxes and level shifters; maintains sub-100-ps jitter budget across hot-swappable modules. |
Use Scenario: Distributing low-jitter reference clocks from a central oscillator to multiple SerDes lanes in Layer-3 packet switches. IC Role / Device Role / Timing Role: Clock mux delivering phase-aligned LVDS outputs to 4 independent PHYs. Use Value: Enables hitless clock source switching during failover while preserving deterministic skew across all outputs. |
| High-Speed Test Equipment | Optical Transport Network (OTN) Line Cards |
|
Use Scenario: Configurable signal routing in bit-error-rate testers (BERTs) where DUT interfaces vary by protocol (SONET, Fibre Channel, Ethernet). IC Role / Device Role / Timing Role: Protocol-agnostic crosspoint allowing instrument firmware to remap test stimulus paths on-the-fly. Use Value: Reduces hardware variants needed per tester model; supports >2 Gbps PRBS patterns with verified eye opening. |
Use Scenario: Interfacing OTU2/OTU3 framers to forward error correction (FEC) ASICs and optical line drivers in DWDM line cards. IC Role / Device Role / Timing Role: High-fidelity signal switch handling 10.7-Gbps OTU2 and 43-Gbps OTU3 parallel lanes. Use Value: Maintains signal integrity across full temperature range (−40°C to +85°C); validated with PRBS2^23−1 at 2.5 Gbps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LVDS crosspoint switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65LVDT250DBTR | Includes integrated 110-Ω differential termination resistors on all inputs; otherwise identical pinout, timing, and logic | Reduces external component count in space-constrained designs but increases power dissipation by ~15 mA | Select SN65LVDT250DBTR when board area is constrained and termination matching is required on input side |
| MAX9154ESE+ | 4×4 LVDS crosspoint with 3.3-V operation, but higher 1.3-ns max propagation delay and 150-ps pk-pk jitter at 2 Gbps | Lower jitter performance limits use in <1e−12 BER systems; requires external termination resistors | Choose MAX9154ESE+ only if TI supply chain constraints exist and jitter budget allows ≥150-ps variation |
Compared with SN65LVDT250DBTR and MAX9154ESE+, the SN65LVDS250DBTRG4 provides the lowest jitter (60 ps vs. 110 ps/150 ps) and highest data rate margin (>2.5 Gbps), making it optimal for timing-critical telecom and test equipment where deterministic skew and eye integrity are non-negotiable.
Availability
SN65LVDS250DBTRG4 is available at Aetrix Electronics and suitable for wireless base station backhaul, high-speed network routing, and optical transport network line cards requiring stable component supply across extended temperature ranges and multi-year production cycles.
Supply support for SN65LVDS250DBTRG4 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 heritage in signal integrity and timing products.
The SN65LVDS250DBTRG4 belongs to TI's LVDS interface portfolio, engineered specifically for high-bandwidth, low-jitter signal routing in telecom infrastructure, test instrumentation, and datacom switching systems.
FAQ
What is the maximum data rate supported by the SN65LVDS250DBTRG4?
The SN65LVDS250DBTRG4 is characterized for operation above 2.0 Gbps, with validated performance up to 2.5 Gbps using PRBS2^23−1 patterns. At 2.0 Gbps, typical peak-to-peak jitter is 60 ps; at 2.5 Gbps, it rises to 110 ps. The device maintains ANSI TIA/EIA-644-A LVDS compliance across this range, and its 800-ps typical propagation delay ensures minimal latency in routing paths. SN65LVDS250DBTRG4 supports both clock and data applications requiring deterministic timing behavior.
Does the SN65LVDS250DBTRG4 include integrated termination resistors?
No, the SN65LVDS250DBTRG4 does not include integrated 110-Ω differential termination resistors. That feature is exclusive to the SN65LVDT250DBTR variant. The SN65LVDS250DBTRG4 requires external 100-Ω termination across each differential output pair (e.g., between Y and Z pins) to meet LVDS standard loading requirements. This design choice reduces power consumption and allows flexibility in termination placement for optimal signal integrity.
Can the SN65LVDS250DBTRG4 accept LVPECL or CML inputs directly?
Yes, the SN65LVDS250DBTRG4 inputs are electrically compatible with LVPECL and CML signal levels in addition to LVDS. Its input stage accepts differential voltages from 100 mV to 800 mV and common-mode voltages from 0 V to 3.3 V, accommodating typical LVPECL (≈1.6 V common-mode) and CML (≈2.0 V common-mode) swings without external biasing or level shifting. This multi-standard compatibility is explicitly confirmed in the TI datasheet under "Input Electrical Characteristics" and "Typical Application Circuits."
What is the pinout configuration of the SN65LVDS250DBTRG4 and how does it aid PCB layout?
The SN65LVDS250DBTRG4 uses a flow-through pinout in its 38-pin TSSOP (DBT) package: inputs (1A/1B–4A/4B) occupy pins 1–16 and 33–38, while outputs (1Y/1Z–4Y/4Z) occupy pins 17–32. This arrangement allows straight-line PCB routing with minimal layer transitions and reduced crosstalk. Power (VCC) and ground (GND) pins are distributed across both sides (pins 10, 12, 14, 22, 24, 26, 28, 30, 32, 34, 36, 38) to lower impedance and suppress simultaneous switching noise-critical for maintaining signal integrity at >2 Gbps.
How does the SN65LVDS250DBTRG4 handle output enable and high-impedance states?
The SN65LVDS250DBTRG4 provides individual output enable control via pins 1DE–4DE: driving any DE pin low places the corresponding Y/Z output pair into a high-impedance state with ±1 µA leakage current. Propagation delays from DE assertion to high-Z are 6 ns (tPHZ/tPLZ), and from high-Z to active are 300 ns (tPZH/tPZL). This controlled tri-state behavior allows dynamic reconfiguration without bus contention, and is validated across −40°C to +85°C. SN65LVDS250DBTRG4 supports hot-swap-capable system architectures where outputs may be disabled during field upgrades.
SN65LVDS250DBTRG4 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
SN65LVDS250DBTRG4 FAQ
1.How can I place an order for SN65LVDS250DBTRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65LVDS250DBTRG4 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 SN65LVDS250DBTRG4 reliable?
The price and inventory of SN65LVDS250DBTRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65LVDS250DBTRG4 is usually 5 days.
3.What payment methods are accepted for SN65LVDS250DBTRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65LVDS250DBTRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN65LVDS250DBTRG4?
SN65LVDS250DBTRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65LVDS250DBTRG4 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 SN65LVDS250DBTRG4?
For technical support, including SN65LVDS250DBTRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65LVDS250DBTRG4 requirements.
6.How does Aetrix verify that SN65LVDS250DBTRG4 is sourced from the original manufacturer or authorized distributors?
All SN65LVDS250DBTRG4 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 SN65LVDS250DBTRG4 meets industry standards.
7.What is the process for return or replacement of SN65LVDS250DBTRG4?
All SN65LVDS250DBTRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN65LVDS250DBTRG4, 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 SN65LVDS250DBTRG4 part is unused and in its original packaging.
Return procedure for SN65LVDS250DBTRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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