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Texas Instruments SN65LVDT122PWRG4
- Part No.:
- SN65LVDT122PWRG4
- Manufacturer:
- Texas Instruments
- Category:
- Signal Switches, Multiplexers, Decoders
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
SN65LVDT122PWRG4.pdf
- Description:
- IC CROSSPOINT SW 1 X 2:2 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,728
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Product details
Overview
SN65LVDT122PWRG4 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.
For engineers reviewing the SN65LVDT122PWRG4 datasheet, SN65LVDT122PWRG4 pinout, SN65LVDT122PWRG4 application, or SN65LVDT122PWRG4 equivalent, key selection criteria include differential input hysteresis (25 mV), propagation delay (≤900 ps), output skew (≤40 ps), termination integration, and TSSOP-16 package compatibility with high-density PCB layouts.
Technical Context
The SN65LVDT122PWRG4 implements a fully differential 2×2 crosspoint architecture with dual enable (1DE/2DE) and dual select (S0/S1) logic control, enabling four reconfigurable modes: crosspoint switch, 2:1 multiplexer, 1:2 splitter, or dual repeater. Internal signal paths preserve LVDS integrity without level translation.
It features electrically compatible inputs accepting LVDS (±100 mV threshold), LVPECL, and CML signals, and integrates on-die 110-Ω termination only on the SN65LVDT122 variant-distinct from the non-terminated SN65LVDS122. Termination remains active during power-down (VCC = 1.5 V), maintaining impedance match in standby.
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 |
| Total Jitter (pp) | ≤65 ps at 1.5 Gbps PRBS23 - ensures eye opening >70% at 200 ps/div for reliable sampling |
| Propagation Delay | 400–900 ps - enables sub-nanosecond timing alignment in clock fanout and loopback diagnostics |
| Differential Input Hysteresis | 25 mV - improves noise immunity against EMI in noisy backplane environments |
| Common-Mode Input Range | 0 V to 4 V - allows direct interfacing with LVPECL (VTT = VCC − 2 V) and CML without AC coupling |
| Termination Resistance | 90–132 Ω (typ. 110 Ω) - matches standard 100-Ω differential traces, eliminating external resistors and saving board space |
| Supply Voltage | 3.0–3.6 V (nom. 3.3 V) - compatible with modern low-voltage I/O domains and reduces power vs. 5-V alternatives |
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 | Independent second input channel; supports dual-source clock/data switching |
| 1Y, 1Z | Differential Output Pair 1 | Active when enabled; VOD = 247–454 mV into 100-Ω load |
| 2Y, 2Z | Differential Output Pair 2 | Independent second output; matched skew ≤40 ps relative to 1Y/1Z |
| S0, S1 | Configuration Select Inputs | Set crosspoint mode (00=pass-thru, 01=swap, 10=mux, 11=splitter); TTL/LVTTL compatible |
| 1DE, 2DE | Output Enable Controls | High-active enables respective output; drives outputs to high-Z when low |
| VCC | Power Supply | Single 3.3-V supply powers all internal circuitry and termination resistors |
| GND | Ground Reference | Two dedicated ground pins (pins 8 and 16) minimize ground bounce in high-speed switching |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 110-Ω termination | Eliminates two external 55-Ω resistors per channel, reducing BOM count and layout area by ~3 mm² per channel |
| 25-mV input hysteresis | Rejects sub-25-mV noise spikes on critical clock/data lines in RF-sensitive wireless basestation applications |
| 0–4-V common-mode input range | Directly interfaces LVPECL (1.6 V common-mode) and CML (2 V) without level-shifting components |
| Sub-2.6 ns select-to-output switching | Enables real-time protection switching in fault-tolerant serial backplanes with <3 ns reconfiguration latency |
| Pin-compatible upgrade path | Drop-in replacement for SN65LVDS22/SN65LVDM22 with identical footprint and logic interface |
Applications
| Optical Module Clock Multiplexing | Serial Backplane Protection Switching |
|---|---|
Use Scenario: Selecting between primary and backup reference clocks in 10-G optical line cards with OC-192 compliance. IC Role / Device Role / Timing Role: Dual-input LVDS multiplexer providing glitch-free clock handover via synchronous S0/S1 control. Use Value: Maintains <65 ps jitter during switching, preserving SONET/SDH bit error rate (BER) <10⁻¹² without PLL relock. | Use Scenario: Isolating faulty data lanes in telecom backplanes while rerouting traffic through redundant paths. IC Role / Device Role / Timing Role: 2×2 crosspoint switch enabling hot-swap lane reconfiguration without system reset. Use Value: Sub-3 ns switching latency prevents packet loss during failover; integrated termination avoids stub reflections. |
| Low-Jitter Clock Repeater | Central Office Clock Distribution |
Use Scenario: Boosting and fanning out a 622-MHz central office clock to multiple shelf controllers. IC Role / Device Role / Timing Role: Dual-channel LVDS repeater with matched propagation delay (<50 ps skew) across outputs. Use Value: Delivers deterministic jitter <17 ps peak-to-peak, meeting Telcordia GR-1244-CORE phase noise requirements. | Use Scenario: Distributing synchronized timing across distributed switching fabric in carrier-grade routers. IC Role / Device Role / Timing Role: High-isolation LVDS buffer translating between different voltage-domain clocks (e.g., LVPECL to LVDS). Use Value: 0–4 V common-mode range accepts upstream LVPECL sources directly, removing AC-coupling capacitors and DC bias networks. |
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 55-Ω resistors per differential pair | Better suited for designs where termination must be placed at far-end or where trace length varies significantly | Select when board layout allows discrete termination placement and thermal management of external resistors is feasible |
| SN65LVCP22PWR | Lower max rate (1.0 Gbps); no integrated termination; supports only LVDS inputs (not LVPECL/CML) | Targeted at cost-sensitive industrial control systems with lower bandwidth needs | Choose only if signaling rate ≤1.0 Gbps and input compatibility limited to LVDS |
Compared with SN65LVDS122PWR and SN65LVCP22PWR, the SN65LVDT122PWRG4 provides higher bandwidth (1.5 Gbps), broader input compatibility (LVPECL/CML/LVDS), and integrated termination-making it optimal for space-constrained, multi-standard optical and telecom infrastructure where board area and signal integrity are critical.
Availability
SN65LVDT122PWRG4 is available at Aetrix Electronics and suitable for optical modules, central office clock distribution, and wireless basestations requiring stable component supply across extended product lifecycles.
Supply support for SN65LVDT122PWRG4 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-performance signal chain solutions.
The SN65LVDT122PWRG4 belongs to TI's LVDS interface portfolio, engineered for ultra-low-jitter, high-speed interconnect in telecom infrastructure, optical networking, and mission-critical timing systems.
FAQ
What is the maximum data rate supported by the SN65LVDT122PWRG4?
The SN65LVDT122PWRG4 is characterized for operation up to 1.5 Gbps with 2²³−1 PRBS input pattern, delivering ≤65 ps peak-to-peak jitter. While some applications achieve 2 Gbps under ideal loading and signal quality conditions, TI specifies 1.5 Gbps as the guaranteed performance limit for production use in the SN65LVDT122PWRG4.
Does the SN65LVDT122PWRG4 require external termination resistors?
No. The SN65LVDT122PWRG4 integrates 110-Ω termination resistors on-chip for both differential input pairs-confirmed in the datasheet's "Integrated Termination on SN65LVDT122 Only" note and electrical characteristics table (RT = 90–132 Ω). This eliminates the need for external 55-Ω resistors per leg, simplifying layout and reducing component count.
Can the SN65LVDT122PWRG4 accept LVPECL input signals?
Yes. The SN65LVDT122PWRG4 supports LVPECL inputs across its full 0–4 V common-mode range, verified by test conditions specifying VIC = 0 V to 4 V and compatibility statements listing LVPECL alongside LVDS and CML. Input thresholds (VIT± = ±100 mV) and hysteresis (25 mV) ensure robust detection of LVPECL logic levels without external level shifting.
What is the operating temperature range for the SN65LVDT122PWRG4?
The SN65LVDT122PWRG4 is characterized and specified for continuous operation from –40°C to +85°C ambient temperature, as stated in the Recommended Operating Conditions table and confirmed in the Ordering Information section. This industrial temperature grade supports deployment in base station radios, optical line terminals, and central office equipment.
How does the SN65LVDT122PWRG4 differ from the SN65LVDS122PWR?
The SN65LVDT122PWRG4 differs from the SN65LVDS122PWR primarily in integrated 110-Ω termination (present only in LVDT variants), identical pinout and logic interface. Both share 1.5-Gbps capability, jitter specs, and temperature range-but SN65LVDT122PWRG4 saves board space and reduces parasitics by embedding termination, whereas SN65LVDS122PWR requires external resistors.
SN65LVDT122PWRG4 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:
- Obsolete
- 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
SN65LVDT122PWRG4 FAQ
1.How can I place an order for SN65LVDT122PWRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN65LVDT122PWRG4 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 SN65LVDT122PWRG4 reliable?
The price and inventory of SN65LVDT122PWRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN65LVDT122PWRG4 is usually 5 days.
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4.How is shipping managed for SN65LVDT122PWRG4?
SN65LVDT122PWRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN65LVDT122PWRG4 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 SN65LVDT122PWRG4?
For technical support, including SN65LVDT122PWRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN65LVDT122PWRG4 requirements.
6.How does Aetrix verify that SN65LVDT122PWRG4 is sourced from the original manufacturer or authorized distributors?
All SN65LVDT122PWRG4 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 SN65LVDT122PWRG4 meets industry standards.
7.What is the process for return or replacement of SN65LVDT122PWRG4?
All SN65LVDT122PWRG4 units undergo pre-shipment inspection (PSI). If there is an issue with SN65LVDT122PWRG4, 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 SN65LVDT122PWRG4 part is unused and in its original packaging.
Return procedure for SN65LVDT122PWRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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