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Texas Instruments DS92LX2121SQE/NOPB
- Part No.:
- DS92LX2121SQE/NOPB
- Manufacturer:
- Texas Instruments
- Category:
- Serializers, Deserializers
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
DS92LX2121SQE/NOPB.pdf
- Description:
- IC SERIALIZER 21-BIT 40WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,107
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Product details
Overview
DS92LX2121SQE/NOPB from Texas Instruments is a Channel Link III serializer IC that converts 21-bit parallel LVCMOS video and control data (RGB666 + HS/VS/DE) into a DC-balanced, embedded-clock serial stream for transmission over a single differential pair. It supports 10–50 MHz pixel clocks, delivers up to 1050 Mbits/sec throughput, drives up to 10 meters of shielded twisted-pair cable, and operates from a single 1.8V supply across −40°C to +85°C.
For engineers reviewing the DS92LX2121SQE/NOPB datasheet, DS92LX2121SQE/NOPB pinout, DS92LX2121SQE/NOPB application, or DS92LX2121SQE/NOPB equivalent, key selection criteria include its bi-directional I²C-compatible control channel, AT-speed BIST for link integrity validation, programmable clock edge alignment on parallel interface, integrated CML termination, and 1.8V/3.3V I/O compatibility.
Technical Context
The DS92LX2121SQE/NOPB implements a forward-channel serializer with embedded clock technology enabling AC-coupled interconnects and eliminating skew between parallel data and clock paths. Its CML output driver provides 268–412 mV differential voltage with 80–120 Ω internal termination, while the PLL locks within 1–2 ms and supports jitter transfer bandwidth of 1.90 MHz.
It integrates a full-duplex bi-directional control channel using I²C protocol over the same differential pair, with master/slave mode selection via M/S pin and device addressing via CAD resistor divider. The serializer includes four general-purpose outputs (GPO[3:0]), power-down control (PDB), and supports spread-spectrum clocking (SSCG) to reduce EMI.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data throughput | Up to 1050 Mbits/sec - enables high-resolution video transport at 50 MHz PCLK with 21-bit payload |
| Input clock range | 10–50 MHz - supports standard display timing including VGA, SVGA, and XGA resolutions |
| Parallel interface | 21-bit DIN[20:0] + PCLK - accepts RGB666 + HS/VS/DE timing signals with user-selectable latch edge |
| Supply voltage | Single 1.8V ±5% core supply - reduces system power and simplifies PMIC design |
| I/O voltage support | 1.8V or 3.3V-compatible LVCMOS - allows direct interfacing with diverse host controllers without level shifters |
| ESD rating | ≥±25 kV air discharge on CML pins - ensures robustness in industrial cable-connected environments |
| Operating temperature | −40°C to +85°C - qualified for industrial and medical display applications |
Pinout & Package
DS92LX2121SQE/NOPB is housed in a 40-pin WQFN package (RTA) with exposed thermal pad (DAP = GND). Pin pitch is 0.4 mm; package dimensions are 6.0 mm × 6.0 mm × 0.8 mm.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| DIN[20:0] | Parallel data input | 21-bit LVCMOS inputs accepting RGB666 + HS/VS/DE; pull-down enabled for unused pins |
| PCLK | Pixel clock input | Strobe edge configurable via TRFB register; determines sampling phase for parallel data capture |
| GPO[3:0] | General-purpose output | Individually configurable LVCMOS outputs for panel control, backlight enable, or status signaling |
| SCL/SDA | I²C control bus | Open-drain interface for configuration and diagnostics; requires external pull-ups to VDDIO |
| M/S | I²C mode select | Master mode default (SCL generated); slave mode enables connection to external I²C controller |
| PDB | Power-down control | Active-high input disabling PLL and minimizing IDD to 55–125 µA in sleep state |
| DOUT+/DOUT− | CML serial output | Differential forward channel driving single twisted-pair; integrated 100 Ω termination |
| CAD | Device ID address | Analog input tied to resistor divider for programmable slave address on I²C bus |
Key Features
| Feature | Design Value |
|---|---|
| DC-balanced encoding | Enables AC coupling over long cables (up to 10 m) without baseline wander or signal degradation |
| Bi-directional control channel | Full-duplex I²C communication coexists with video stream on same differential pair-no extra wires needed |
| AT-speed BIST | On-the-fly link integrity validation using built-in pattern generator and PASS/LOCK monitoring |
| Programmable spread spectrum | Reduces EMI peak emissions by modulating clock frequency ±0.5% to ±2.0% at 9–66 kHz |
| Integrated CML termination | Eliminates need for external 100 Ω resistors-reduces BOM count and PCB layout complexity |
Applications
| Industrial Touch Displays | Medical Imaging Panels |
|---|---|
Use Scenario: High-reliability video transmission from graphics controller to ruggedized touch-enabled HMI in factory automation cabinets. IC Role / Device Role / Timing Role: Serializer converting parallel RGB666+timing signals into noise-immune serial stream over 5–8 meter shielded cable. Use Value: Eliminates clock/data skew, supports −40°C to +85°C operation, and withstands >25 kV ESD per IEC 61000-4-2. | Use Scenario: Real-time diagnostic imaging data routing from frame grabber to high-brightness LCD in portable ultrasound or endoscopy systems. IC Role / Device Role / Timing Role: Forward-channel serializer with embedded clock ensuring deterministic latency and jitter-controlled PCLK recovery. Use Value: Enables 18-bit color fidelity at 50 MHz with AT-speed BIST for continuous link health verification during clinical use. |
| Automotive Digital Instrument Clusters | Avionics Display Interfaces |
Use Scenario: Video backbone connecting infotainment SoC to TFT cluster display in vehicles with stringent EMC requirements. IC Role / Device Role / Timing Role: Serializer implementing SSCG to suppress radiated emissions below CISPR 25 Class 5 limits. Use Value: Meets automotive EMI standards without added shielding or ferrites; supports 1.8V/3.3V mixed-voltage host interfaces. | Use Scenario: Mission-critical video distribution from mission computer to multifunction displays in fixed-wing aircraft cockpits. IC Role / Device Role / Timing Role: Robust serializer with LOCK output reporting PLL lock status and PASS output confirming error-free transmission. Use Value: Provides real-time link integrity feedback for DO-254 compliance; operates reliably across extended temperature and vibration profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serializer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS92LV0422TSA/NOPB | Lower data rate (660 Mbps), no bi-directional control channel, supports only 24-bit LVDS output | Lacks I²C backchannel and BIST; suitable only for unidirectional video-only links | Select when cost sensitivity outweighs need for diagnostics and bidirectional control |
| MAX9278GTJ/V+T | Higher max clock (100 MHz), includes GPIO expander, uses different encoding (8b10b vs DC-balanced) | Supports higher resolution (UXGA+) but requires external level translation for 1.8V hosts | Prefer for next-gen displays requiring >50 MHz PCLK and additional GPIO resources |
Compared with DS92LV0422TSA/NOPB and MAX9278GTJ/V+T, DS92LX2121SQE/NOPB uniquely combines bi-directional I²C control, AT-speed BIST, and single-supply 1.8V operation-making it optimal for space-constrained industrial displays needing both video transport and real-time diagnostics over one cable.
Availability
DS92LX2121SQE/NOPB is available at Aetrix Electronics and suitable for industrial HMIs, medical imaging panels, and automotive digital clusters requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for DS92LX2121SQE/NOPB 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 broad industrial and automotive design expertise.
The DS92LX2121SQE/NOPB belongs to TI's Channel Link III chipset family, engineered specifically for high-integrity, low-skew video transport in harsh environments where cable length, EMI, and diagnostics are critical.
FAQ
What is the maximum supported cable length for DS92LX2121SQE/NOPB?
The DS92LX2121SQE/NOPB is specified to drive up to 10 meters of shielded twisted-pair cable while maintaining signal integrity and jitter performance. This capability relies on its DC-balanced encoding, integrated CML driver with 268–412 mV output swing, and receiver equalization support in the companion DS92LX2122 deserializer. Actual reach depends on cable quality and noise environment.
Does DS92LX2121SQE/NOPB require an external reference clock?
No, DS92LX2121SQE/NOPB does not require an external reference clock. It uses an internal PLL locked to the incoming PCLK signal (10–50 MHz) to generate the high-speed serial bit clock. The PLL achieves lock within 1–2 ms and supports jitter transfer bandwidth of 1.90 MHz, making it self-synchronizing and eliminating dependency on separate clock sources.
Can DS92LX2121SQE/NOPB operate with a 3.3V I/O supply?
Yes, DS92LX2121SQE/NOPB supports dual I/O voltage modes: VDDIO may be set to either 1.8V ±5% or 3.3V ±10%. Its LVCMOS inputs and outputs are fully compatible with both levels, allowing direct interfacing with legacy 3.3V graphics controllers or modern 1.8V SoCs without external level shifters-verified by VIH/VIL and VOH/VOL specifications across both ranges.
How is the I²C address configured on DS92LX2121SQE/NOPB?
The I²C slave address of DS92LX2121SQE/NOPB is set via the CAD (Continuous Address Decoder) pin, an analog input connected to an external resistor divider. This allows programmable selection of device ID within the I²C bus, enabling multiple DS92LX2121SQE/NOPB units on the same control channel. Configuration details-including resistor values and address mapping-are provided in Section 8.5.3 of the SNLS330J datasheet.
What diagnostic capabilities does DS92LX2121SQE/NOPB provide?
DS92LX2121SQE/NOPB includes AT-speed BIST (Built-In Self-Test) activated via the BISTEN pin. When enabled, it generates known test patterns and validates link integrity in real time. The companion deserializer reports PASS/FAIL status on the PASS pin, while LOCK output confirms PLL lock. These features enable continuous health monitoring without halting video transmission-critical for medical and industrial safety-critical displays.
DS92LX2121SQE/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 40-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Serializer
- Data Rate:
- 1.05Gbps
- Input Type:
- Channel Link III (LVCMOS)
- Output Type:
- Channel Link III (CML)
- Number of Inputs:
- 21
- Number of Outputs:
- 1
- Voltage - Supply:
- 1.71V ~ 1.89V, 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-WQFN (6x6)
DS92LX2121SQE/NOPB FAQ
1.How can I place an order for DS92LX2121SQE/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for DS92LX2121SQE/NOPB 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 DS92LX2121SQE/NOPB reliable?
The price and inventory of DS92LX2121SQE/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS92LX2121SQE/NOPB is usually 5 days.
3.What payment methods are accepted for DS92LX2121SQE/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS92LX2121SQE/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS92LX2121SQE/NOPB?
DS92LX2121SQE/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS92LX2121SQE/NOPB 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 DS92LX2121SQE/NOPB?
For technical support, including DS92LX2121SQE/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS92LX2121SQE/NOPB requirements.
6.How does Aetrix verify that DS92LX2121SQE/NOPB is sourced from the original manufacturer or authorized distributors?
All DS92LX2121SQE/NOPB 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 DS92LX2121SQE/NOPB meets industry standards.
7.What is the process for return or replacement of DS92LX2121SQE/NOPB?
All DS92LX2121SQE/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with DS92LX2121SQE/NOPB, 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 DS92LX2121SQE/NOPB part is unused and in its original packaging.
Return procedure for DS92LX2121SQE/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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