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Texas Instruments SN65LVDS122PWG4
- Part No.:
- SN65LVDS122PWG4
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN65LVDS122PWG4.pdf
- Description:
- IC CROSSPOINT SW 1 X 2:2 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,587
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Product details
Overview
SN65LVDS122PWG4 from Texas Instruments is a 1.5-Gbps 2×2 LVDS crosspoint switch with pin-compatible upgrade path from SN65LVDS22, 900-ps max propagation delay, 25-mV input hysteresis over 0–4-V common-mode range, and dual differential I/O pairs (1A/1B, 2A/2B ↔ 1Y/1Z, 2Y/2Z) for high-speed clock/data routing in optical modules and serial backplanes.
For engineers reviewing the SN65LVDS122PWG4 datasheet, SN65LVDS122PWG4 pinout, SN65LVDS122PWG4 application, or SN65LVDS122PWG4 equivalent, key selection criteria include its 1.5-Gbps signaling rate, <65-ps peak-to-peak jitter at 1.5 Gbps PRBS, LVPECL/CML/LVDS input compatibility, 3.3-V operation, and TSSOP-16 package with no integrated termination.
Technical Context
The SN65LVDS122PWG4 implements a fully differential 2×2 crosspoint architecture using internal LVDS signal paths to maintain low skew and high noise immunity. Its S0/S1 control pins configure four operating modes: crosspoint switch, 2:1 multiplexer, 1:2 splitter, or dual repeater-enabling flexible signal routing without external logic.
It features electrically compatible inputs accepting LVDS, LVPECL, and CML levels across a 0–4-V common-mode range, with 25-mV hysteresis ensuring robust switching under noisy conditions. Output drivers deliver 247–454 mV differential voltage into 100-Ω loads with 280-ps rise/fall times and <50-ps output skew.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Signaling Rate | Up to 1.5 Gbps - supports OC-48/STM-16 and 10-G (OC-192) optical module data rates |
| Propagation Delay | 400–900 ps - enables sub-nanosecond timing alignment in high-speed clock distribution |
| Total Jitter (pp) | ≤65 ps at 1.5 Gbps PRBS - meets stringent jitter budgets for serial backplane and telecom applications |
| Input Compatibility | LVDS, LVPECL, CML - eliminates level-shifting circuitry when interfacing with diverse high-speed sources |
| Common-Mode Range | 0 V to 4 V - accommodates wide-swing legacy interfaces while maintaining LVDS output compliance |
| Supply Voltage | 3.0–3.6 V (nominal 3.3 V) - matches standard LVDS power rails and simplifies system-level power design |
| Differential Output Voltage | 247–454 mV into 100 Ω - ensures reliable eye opening and margin against receiver thresholds |
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 ≥100 mV required for valid logic detection |
| 2B, 2A | Differential Input Pair 2 | Second independent input channel; supports 2:1 mux or crosspoint configuration |
| 1Y, 1Z | Differential Output Pair 1 | Drives 100-Ω terminated line; VOC(SS) = 1.125–1.375 V ensures LVDS receiver compatibility |
| 2Y, 2Z | Differential Output Pair 2 | Independent output channel; supports fanout, splitting, or protection switching |
| S0, S1 | Configuration Control Inputs | Set crosspoint mode (00), 2:1 mux (01/10), or dual repeater (11); CMOS-compatible logic levels |
| 1DE, 2DE | Channel Enable Inputs | Individually disable outputs 1 or 2 to reduce power or isolate faults; high-impedance state activated |
| VCC | Power Supply | Single 3.3-V supply powers all I/O and internal logic; decoupling required per TI layout guidelines |
| GND | Ground Reference | Two dedicated ground pins (pins 8 and 16) minimize ground bounce in high-speed switching |
Key Features
| Feature | Design Value |
|---|---|
| 2×2 Crosspoint Flexibility | Single device replaces discrete mux/splitter/repeater combinations, reducing BOM count and board area |
| Multi-Standard Input Acceptance | Eliminates need for external level translators when connecting LVPECL clocks or CML SerDes to LVDS receivers |
| Sub-1-ns Propagation Matching | ≤50-ps output skew and ≤100-ps part-to-part skew preserve phase alignment across parallel data lanes |
| Configurable Channel Enables | Independent 1DE/2DE pins allow dynamic output gating for power management or fault containment |
| Robust Input Hysteresis | 25-mV differential hysteresis prevents chatter on marginal or noisy inputs, improving system reliability |
Applications
| Optical Module Clock Multiplexing | Serial Backplane Protection Switching |
|---|---|
Use Scenario: Selecting between primary and backup clock sources in 10-Gbps OC-192 optical line cards. IC Role / Device Role / Timing Role: 2×2 crosspoint switch routes either clock source to downstream SERDES without introducing jitter or skew. Use Value: Maintains <65-ps peak-to-peak jitter at 1.5 Gbps, preserving BER performance during failover events. | Use Scenario: Isolating faulty data lanes in high-availability telecom backplanes to prevent cascading failures. IC Role / Device Role / Timing Role: Dual repeater mode buffers and retransmits critical control or status signals across redundant paths. Use Value: 0–4-V common-mode input range accepts degraded signals from failing modules, enabling graceful degradation. |
| Wireless Basestation RF Front-End | Central Office Clock Distribution |
Use Scenario: Routing high-frequency reference clocks between multiple transceiver ICs in massive MIMO basestations. IC Role / Device Role / Timing Role: 1:2 splitter mode fans out a single low-jitter clock to two independent RFICs simultaneously. Use Value: 280-ps rise/fall times and <50-ps output skew ensure matched edge timing across parallel antenna arrays. | Use Scenario: Distributing 622-MHz SONET/SDH clocks across multiple shelf controllers in central office switches. IC Role / Device Role / Timing Role: Low-jitter clock repeater boosts signal integrity over long PCB traces between shelves. Use Value: 900-ps max propagation delay and <17-ps cycle-to-cycle jitter meet GR-1244-CORE phase noise requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LVDS crosspoint switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65LVDS22PW | Lower 800-Mbps max rate; identical pinout and function but not speed-graded for 1.5 Gbps | Suitable only for ≤800-Mbps legacy systems; lacks jitter specs at 1.5 Gbps | Select SN65LVDS122PWG4 when 1.5-Gbps operation or <65-ps jitter is required. |
| SN65LVDT122PW | Includes integrated 110-Ω termination resistors on outputs; otherwise identical electrical specs and pinout | Reduces external component count where board space is constrained, but increases power dissipation | Choose SN65LVDS122PWG4 when external termination is preferred for optimal impedance control or thermal management. |
Compared with SN65LVDS22PW, SN65LVDS122PWG4 delivers 87% higher bandwidth and verified jitter performance at 1.5 Gbps; versus SN65LVDT122PW, it offers full design flexibility for custom termination networks and lower quiescent current in powered-down states.
Availability
SN65LVDS122PWG4 is available at Aetrix Electronics and suitable for optical modules, wireless basestations, and central office clock distribution requiring stable component supply across industrial temperature ranges (–40°C to 85°C).
Supply support for SN65LVDS122PWG4 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 delivering analog, embedded processing, and connectivity solutions for industrial, automotive, and communications markets.
The SN65LVDS122PWG4 belongs to TI's high-speed interface product line, engineered specifically for low-jitter, multi-standard differential signal routing in telecom infrastructure and datacom equipment.
FAQ
What is the maximum data rate supported by the SN65LVDS122PWG4?
The SN65LVDS122PWG4 is characterized for operation up to 1.5 Gbps with 223−1 PRBS input patterns and guarantees ≤65-ps peak-to-peak jitter at that rate. While some applications achieve 2 Gbps depending on loading and signal quality, TI specifies 1.5 Gbps as the guaranteed maximum signaling rate for the SN65LVDS122PWG4 across –40°C to 85°C.
Does the SN65LVDS122PWG4 include internal termination resistors?
No, the SN65LVDS122PWG4 does not integrate termination resistors. It requires external 100-Ω differential termination at each output (1Y/1Z and 2Y/2Z). In contrast, the pin-compatible SN65LVDT122PW variant integrates 110-Ω resistors - the "S" in SN65LVDS122PWG4 explicitly denotes the non-terminated version.
Can the SN65LVDS122PWG4 accept LVPECL inputs directly?
Yes, the SN65LVDS122PWG4 accepts LVPECL inputs directly due to its 0–4-V common-mode input voltage range and input threshold hysteresis. When interfacing with 3.3-V LVPECL sources, no level-shifting circuitry is needed - the device interprets differential swings correctly as long as |VID| ≥100 mV, making the SN65LVDS122PWG4 suitable for mixed-signaling environments.
What are the key timing parameters for configuring the SN65LVDS122PWG4 as a 2:1 multiplexer?
When using S0/S1 to configure the SN65LVDS122PWG4 as a 2:1 mux, setup time (tSET) is 0 ns and hold time (tHOLD) is 0.5 ns relative to the select inputs. The select-to-output switch time (tSWITCH) is 1–2.6 ns, enabling rapid reconfiguration without glitches. These values ensure deterministic behavior in real-time clock switching applications involving the SN65LVDS122PWG4.
Is the SN65LVDS122PWG4 RoHS compliant and what is its moisture sensitivity level?
Yes, the SN65LVDS122PWG4 is RoHS compliant with NiPdAu lead finish and carries an MSL Level-1 rating (unlimited floor life at ≤30°C/60% RH), meaning it can be assembled without baking or special handling. This MSL Level-1 classification applies to all TSSOP-packaged variants of the SN65LVDS122PWG4 per TI's packaging documentation.
SN65LVDS122PWG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 65LVDS
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- 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
SN65LVDS122PWG4 FAQ
1.How can I place an order for SN65LVDS122PWG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65LVDS122PWG4 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 SN65LVDS122PWG4 reliable?
The price and inventory of SN65LVDS122PWG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65LVDS122PWG4 is usually 5 days.
3.What payment methods are accepted for SN65LVDS122PWG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN65LVDS122PWG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN65LVDS122PWG4?
SN65LVDS122PWG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65LVDS122PWG4 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 SN65LVDS122PWG4?
For technical support, including SN65LVDS122PWG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65LVDS122PWG4 requirements.
6.How does Aetrix verify that SN65LVDS122PWG4 is sourced from the original manufacturer or authorized distributors?
All SN65LVDS122PWG4 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 SN65LVDS122PWG4 meets industry standards.
7.What is the process for return or replacement of SN65LVDS122PWG4?
All SN65LVDS122PWG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN65LVDS122PWG4, 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 SN65LVDS122PWG4 part is unused and in its original packaging.
Return procedure for SN65LVDS122PWG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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