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Texas Instruments SN65LVDT122PWR
- Part No.:
- SN65LVDT122PWR
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN65LVDT122PWR.pdf
- Description:
- IC CROSSPOINT SW 1 X 2:2 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,667
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Product details
Overview
SN65LVDT122PWR from Texas Instruments is a 1.5-Gbps 2×2 LVDS crosspoint switch with integrated 110-Ω termination resistors, designed for high-speed signal routing in optical modules and clock distribution systems. It supports LVDS, LVPECL, and CML inputs across 0–4 V common-mode range, delivers <65 ps peak-to-peak jitter at 1.5 Gbps, and operates from –40°C to 85°C on 3.3 V supply.
For engineers reviewing the SN65LVDT122PWR datasheet, SN65LVDT122PWR pinout, SN65LVDT122PWR application, or SN65LVDT122PWR equivalent, key selection criteria include differential input hysteresis (25 mV), propagation delay ≤900 ps, integrated termination, 2×2 reconfigurable topology, and TSSOP-16 package compatibility with space-constrained backplane and telecom designs.
Technical Context
The SN65LVDT122PWR implements a fully differential 2×2 crosspoint architecture with dual enable inputs (1DE/2DE) and dual select lines (S0/S1), enabling four functional modes: crosspoint switch, 2:1 multiplexer, 1:2 splitter, or dual repeater. Internal signal paths preserve LVDS integrity with matched trace lengths to minimize skew.
It features electrically compatible inputs accepting LVDS (±100 mV diff), LVPECL (0–4 V CM), and CML logic levels, while output drivers deliver 247–454 mV differential swing into 100-Ω loads. The integrated 110-Ω termination eliminates external resistors on the receiver side, reducing board area and parasitic effects.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Signaling Rate | Up to 1.5 Gbps - supports OC-48/STM-16 and 622-MHz clock distribution without retiming. |
| Total Jitter (pp) | ≤65 ps at 1.5 Gbps PRBS23 - ensures reliable eye opening in serial backplane applications. |
| Propagation Delay | 400–900 ps - enables precise timing alignment in low-latency switching paths. |
| Differential Input Hysteresis | 25 mV - improves noise immunity against EMI in mixed-signal telecom environments. |
| Common-Mode Input Range | 0 V to 4 V - allows direct interfacing with LVPECL and CML sources without level-shifting circuitry. |
| Integrated Termination | 110 Ω per channel - replaces two external 100-Ω resistors, saving PCB area and reducing layout sensitivity. |
| Supply Voltage | 3.0–3.6 V - optimized for 3.3-V system rails with ±10% tolerance and low-power operation (45 mA typical ICC). |
Pinout & Package
TSSOP-16 package (PW), 5.0 mm × 4.4 mm × 1.2 mm height, lead pitch 0.65 mm, RoHS-compliant NiPdAu finish, MSL Level-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1B, 1A | Differential input pair 1 | Accepts LVDS/LVPECL/CML signals; VID threshold ±100 mV with 25 mV hysteresis. |
| 2B, 2A | Differential input pair 2 | Independent second input channel; identical electrical specs to 1A/1B. |
| 1Y, 1Z | Differential output pair 1 | Drives 100-Ω load with 247–454 mV VOD; includes internal 110-Ω termination to GND. |
| 2Y, 2Z | Differential output pair 2 | Second independent output; same drive strength and termination as 1Y/1Z. |
| S0, S1 | Configuration select inputs | Set crosspoint mode (00=pass-through, 01=swap, 10=1:2, 11=2:1); TTL-compatible thresholds (VIH=2 V, VIL=0.8 V). |
| 1DE, 2DE | Channel enable inputs | High-active enables respective output; drives outputs to high-Z when low (tPHZ/tPLZ = 6–8 ns). |
| VCC | Power supply | Single 3.3-V rail powers all I/O and core logic; decoupling required per TI layout guidelines. |
| GND | Ground reference | Two dedicated ground pins (pins 8 and 16) minimize return-path inductance for high-frequency signals. |
Key Features
| Feature | Design Value |
|---|---|
| Reconfigurable 2×2 topology | Single device replaces discrete mux + buffer combinations, reducing BOM count and interconnect loss. |
| Integrated 110-Ω termination | Eliminates two external resistors per channel, cutting PCB area by ≥12 mm² and improving impedance matching. |
| Multi-standard input compatibility | Direct interface to LVDS, LVPECL, and CML without external biasing or level shifters - simplifies mixed-voltage system design. |
| Low-skew differential signaling | Output skew ≤40 ps and pulse skew ≤50 ps ensure deterministic timing in parallel clock/data fanout. |
| Industrial temperature range | –40°C to 85°C operation validated across voltage and process corners - suitable for base station and central office deployments. |
Applications
| Optical Module Clock Multiplexing | Serial Backplane Protection Switching |
|---|---|
Use Scenario: Selecting between primary and backup clock sources in 10-G (OC-192) optical line cards. IC Role / Device Role / Timing Role: Dual-input LVDS crosspoint switch providing glitch-free clock switchover with <2.6 ns select-to-output delay. Use Value: Enables hitless failover with sub-nanosecond timing control and integrated termination preserving signal integrity at 1.5 Gbps. | Use Scenario: Isolating faulty data lanes in high-speed serial backplanes using redundant path routing. IC Role / Device Role / Timing Role: Reconfigurable 2×2 switch acting as protection element that reroutes traffic around failed transceivers. Use Value: Reduces system downtime via hardware-level lane bypass without FPGA reconfiguration or software intervention. |
| Wireless Basestation Clock Distribution | Low-Jitter Clock Repeater/Multiplexer |
Use Scenario: Distributing synchronized 622-MHz reference clocks across RF processing boards in LTE/5G macrocells. IC Role / Device Role / Timing Role: Low-jitter LVDS repeater with 1:2 fanout capability, maintaining phase alignment across multiple daughterboards. Use Value: Delivers <65 ps pp jitter and <50 ps output skew - meets stringent phase-noise requirements for coherent radio front-ends. | Use Scenario: Boosting and redistributing low-jitter clock signals across dense PCB layouts with long trace runs. IC Role / Device Role / Timing Role: Active LVDS translator/repeater compensating for interconnect loss and capacitive loading beyond 15 cm. Use Value: Restores signal amplitude and edge fidelity while suppressing deterministic jitter introduced by FR4 trace dispersion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LVDS crosspoint switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65LVDS122PWR | No integrated termination; requires external 100-Ω resistors per channel. | Better suited for designs where termination must be placed at far-end or where adjustable termination value is needed. | Select when board layout permits external termination and higher flexibility in impedance tuning is required. |
| SN65LVDM22PWR | Higher max signaling rate (2 Gbps), no integrated termination, wider common-mode range (–0.7 V to 4.3 V). | Targeted at next-gen 2.5G/10G Ethernet PHY interfaces requiring extended voltage margin and speed headroom. | Choose for future-proofing in 2-Gbps-capable systems where SN65LVDT122PWR's 1.5-Gbps limit is insufficient. |
Compared with SN65LVDS122PWR and SN65LVDM22PWR, SN65LVDT122PWR trades off termination flexibility and ultimate speed for reduced component count and guaranteed impedance match - ideal for cost-sensitive, space-constrained 1.5-Gbps optical and telecom modules.
Availability
SN65LVDT122PWR is available at Aetrix Electronics and suitable for optical module clock multiplexing, wireless basestation clock distribution, and serial backplane protection switching requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for SN65LVDT122PWR 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 connectivity technologies, with over 90 years of innovation in high-reliability components.
The SN65LVDT122PWR belongs to TI's high-speed interface product line, engineered specifically for low-jitter, multi-standard differential signal routing in telecom infrastructure, optical networking, and wireless baseband systems.
FAQ
What is the maximum supported data rate for SN65LVDT122PWR?
The SN65LVDT122PWR is characterized for operation up to 1.5 Gbps with 223–1 PRBS input pattern and specified total jitter ≤65 ps. While some 2-Gbps operation may be achievable under optimal loading and signal quality conditions, TI guarantees performance only up to 1.5 Gbps per the SLLS525B datasheet. Designers should validate eye diagrams at target rates using actual channel models.
Does SN65LVDT122PWR require external termination resistors?
No - SN65LVDT122PWR integrates 110-Ω termination resistors on each differential output pair (1Y/1Z and 2Y/2Z), eliminating the need for external 100-Ω resistors typically used in LVDS receivers. This integration reduces PCB area, component count, and layout sensitivity, though designers must verify system-level impedance matching when driving non-standard loads.
Can SN65LVDT122PWR interface directly with LVPECL signals?
Yes - SN65LVDT122PWR accepts LVPECL inputs across its full 0–4 V common-mode range and differential input threshold of ±100 mV with 25 mV hysteresis. No level-shifting circuitry is required, enabling direct connection to MC100EPxxx or similar LVPECL sources, provided VIC remains within specification and proper termination is applied at the source end.
What are the power supply requirements for SN65LVDT122PWR?
SN65LVDT122PWR operates from a single 3.3-V supply with recommended range 3.0 V to 3.6 V. Typical supply current is 45 mA under active conditions and 35 mA when disabled. Decoupling capacitance (e.g., 0.1 µF ceramic + 4.7 µF tantalum per VCC pin) is required close to pins 9 and 10 to maintain signal integrity at 1.5 Gbps.
How does the S0/S1 configuration logic work in SN65LVDT122PWR?
S0 and S1 are TTL-compatible select inputs that configure the internal crosspoint matrix: S1S0 = 00 enables pass-through (1A→1Y, 2A→2Y), 01 swaps channels (1A→2Y, 2A→1Y), 10 enables 1:2 split (1A→1Y+2Y), and 11 enables 2:1 mux (1A/2A→1Y). All modes retain independent enable control via 1DE/2DE, allowing dynamic reconfiguration without reset.
SN65LVDT122PWR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 65LVDT
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Crosspoint Switch
- Circuit:
- 1 x 2:2
- 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:
- 16-TSSOP
SN65LVDT122PWR FAQ
1.How can I place an order for SN65LVDT122PWR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65LVDT122PWR 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 SN65LVDT122PWR reliable?
The price and inventory of SN65LVDT122PWR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65LVDT122PWR is usually 5 days.
3.What payment methods are accepted for SN65LVDT122PWR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65LVDT122PWR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN65LVDT122PWR?
SN65LVDT122PWR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65LVDT122PWR 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 SN65LVDT122PWR?
For technical support, including SN65LVDT122PWR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65LVDT122PWR requirements.
6.How does Aetrix verify that SN65LVDT122PWR is sourced from the original manufacturer or authorized distributors?
All SN65LVDT122PWR 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 SN65LVDT122PWR meets industry standards.
7.What is the process for return or replacement of SN65LVDT122PWR?
All SN65LVDT122PWR units undergo pre-shipment inspection (PSI). If there is an issue with SN65LVDT122PWR, 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 SN65LVDT122PWR part is unused and in its original packaging.
Return procedure for SN65LVDT122PWR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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