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Texas Instruments TMDS261PAGR
- Part No.:
- TMDS261PAGR
- Manufacturer:
- Texas Instruments
- Category:
- Video Processing
- Package:
- 64-TQFP
- Datasheet:
-
TMDS261PAGR.pdf
- Description:
- IC VIDEO HDMI/DVI SWITCH 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,799
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Product details
Overview
TMDS261PAGR from Texas Instruments is a 2-to-1 HDMI/DVI switch IC for high-definition video routing, supporting up to 1080p resolution at 3 Gbps data rate, 16-bit color depth, and adaptive equalization for up to 20-m HDMI cables in consumer display systems including LCD, plasma, and DLP TVs.
For engineers reviewing the TMDS261PAGR datasheet, TMDS261PAGR pinout, TMDS261PAGR application, or TMDS261PAGR equivalent, this page delivers verified technical context, real-world interface behavior, power-mode trade-offs, TMDS signal integrity parameters, and validated alternative options for sink-side HDMI switching designs.
Technical Context
The TMDS261PAGR implements a dual-input, single-output TMDS multiplexer with integrated 50-Ω terminations, automatic clock-detect–driven power management, and adaptive equalization per input channel to compensate for ISI loss up to 20 dB at 3 Gbps. It supports both GPIO and slave-only I²C configuration modes via the I2C_SEL pin.
Its robust receive stage accepts non-compliant TMDS common-mode voltages (VIC = VCC – 0.4 V to VCC + 0.01 V), while the VSadj pin enables precise output swing tuning (RVSadj = 4.02 kΩ ±10%) for HDMI compliance. DDC repeater functionality isolates source/sink capacitance on SCL/SDA lines to ensure system-level I²C timing margin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 3 Gbps - supports full 1080p@60Hz with 16-bit color and Deep Color extensions. |
| Operating Temp | 0°C to 70°C - qualified for commercial-grade consumer electronics environments. |
| Supply Voltage | 3.3 V (3.0–3.6 V) - single-rail operation compatible with standard HDMI sink logic domains. |
| ESD Rating | HBM ±10 kV on TMDS/DDC/HPD pins - protects against field-induced discharge during cable hot-plug events. |
| Power Modes | Normal (780 mW), Standby (20 mW), Low-Power (2 µW) - enables dynamic power scaling based on signal presence. |
| Equalization Range | Up to 20 dB compensation - extends usable HDMI cable length to ~20 meters at 3 Gbps without external redrivers. |
| Output Swing | VOD(pp) = 800–1200 mV differential - meets HDMI 1.3a and DVI 1.0 TMDS voltage compliance. |
Pinout & Package
TMDS261PAGR is housed in a 64-pin TQFP (PAG package), RoHS-compliant, with exposed thermal pad. Pin functions are validated per TI SLLS953 datasheet Figure 2 and Terminal Functions table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK+_1 / CLK–_1 CLK+_2 / CLK–_2 |
Input TMDS differential clock pairs | Accepts two independent HDMI/DVI clock channels; each supports up to 3 Gbps signaling. |
| D[0:2]+_1 / D[0:2]–_1 D[0:2]+_2 / D[0:2]–_2 |
Input TMDS differential data lanes | Three 2-lane data channels per port (total 6 data pairs); fully compliant with HDMI 1.3a pixel encoding. |
| CLK+_SINK / CLK–_SINK D[0:2]+_SINK / D[0:2]–_SINK |
Output TMDS differential clock/data | Single-sink output interface; automatically enabled only after valid TMDS clock detection on selected port. |
| S1/SCL, S2/SDA, I2C_SEL, LP | Configuration & control inputs | GPIO-selectable port switching (S1/S2) or I²C register access (I2C_SEL low); LP forces full high-Z shutdown. |
| HPD1 / HPD2 / HPD_SINK | Hot-plug detect signaling | HPD_SINK drives upstream sink; HPD1/HPD2 reflect HPD_SINK state only for active port-non-selected port HPD pulled low. |
| SCL[1:2], SDA[1:2] SCL_SINK, SDA_SINK |
DDC I²C repeater interface | Isolates source-side and sink-side I²C bus capacitance; supports 100 kHz DDC communication with OVS-selectable VOL. |
| VSadj | Output swing calibration | Connects external 4.02 kΩ resistor to set TMDS output voltage swing for HDMI compliance testing. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Equalization | Auto-compensates for up to 20 dB of intersymbol interference across variable HDMI cable lengths (≤20 m @ 3 Gbps). |
| TMDS Clock-Detect Logic | Enables/disables TMDS terminations and outputs dynamically-reduces idle power by >90% when no valid clock present. |
| DDC Repeater with OVS Control | Three selectable low-level output voltages (VOL1–VOL3) isolate source/sink I²C capacitance to pass HDMI compliance tests. |
| Robust Input Stage | Accepts TMDS input common-mode voltage from (VCC – 0.4 V) to (VCC + 0.01 V), tolerating non-compliant sources like legacy DVD players. |
| Configurable Edge Rate | Four programmable TMDS output rise/fall time settings (84–260 ps) - slower edges reduce EMI for regulatory certification. |
Applications
| High-Definition TV | DVD/Blu-ray Player Switching |
|---|---|
|
Use Scenario: Dual-source HDMI input selection in LCD/plasma/DLP HDTVs with internal scaler and audio processor. IC Role / Device Role / Timing Role: Sink-side 2:1 TMDS switch enabling seamless source arbitration without interrupting EDID/HPD handshake. Use Value: Maintains HDMI 1.3a compliance while supporting adaptive equalization for long cable runs from wall-mounted AV receivers. |
Use Scenario: Consumer A/V receiver integrating DVD player, game console, and streaming box into single HDMI output. IC Role / Device Role / Timing Role: Front-end TMDS multiplexer that preserves HDCP authentication path and DDC repeater isolation between sources. Use Value: Enables plug-and-play source switching with zero visible glitch due to clock-detect–gated output enable. |
| Gaming Console Hub | Digital Signage Controller |
|
Use Scenario: Multi-console docking station routing PS5, Xbox Series X, and Nintendo Switch to shared 4K display. IC Role / Device Role / Timing Role: High-bandwidth video switch with GPIO-controlled port selection and low-latency HPD propagation (<30 ns). Use Value: Supports instantaneous source switching with <20 ns HPD toggle delay-critical for fast console boot and resume sequences. |
Use Scenario: Industrial digital signage controller managing dual HDMI inputs (media player + remote PC) for retail kiosks. IC Role / Device Role / Timing Role: Reliable sink-side switch with standby mode preserving DDC/HPD link while disabling TMDS paths to cut power by 97%. Use Value: Extends system uptime via low-power mode (2 µW) during off-hours while retaining hot-plug readiness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar HDMI/DVI switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMDS251PAGR | Pin-compatible 2:1 switch but lacks adaptive equalization and supports max 1.65 Gbps (1080i only). | Suitable for cost-sensitive 1080i/720p systems where cable length ≤5 m and no Deep Color required. | Select TMDS251PAGR only if bandwidth ≤1.65 Gbps suffices and equalization is unnecessary. |
| PI3HDX1204ZLEX | 4:1 HDMI 2.0 switch (6 Gbps), no built-in DDC repeater; requires external level-shifting for 5-V DDC. | Targets next-gen 4K@60Hz UHD displays; adds port count but increases BOM complexity and layout area. | Choose PI3HDX1204ZLEX when scaling beyond 2 inputs or requiring HDMI 2.0 bandwidth-TMDS261PAGR remains optimal for 2×1 1080p sink routing. |
Compared with TMDS251PAGR, TMDS261PAGR adds 3 Gbps support and adaptive equalization for longer cables; versus PI3HDX1204ZLEX, it offers simpler integration with integrated DDC repeater and lower power in standby mode-making TMDS261PAGR the most balanced choice for mainstream 1080p HDMI switching.
Availability
TMDS261PAGR is available at Aetrix Electronics and suitable for high-definition TV manufacturing, A/V receiver design, gaming peripheral integration, and digital signage controller development requiring stable component supply and long-term production continuity.
Supply support for TMDS261PAGR 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 50 years of innovation in signal chain and power management ICs.
The TMDS261PAGR belongs to TI's HDMI/DVI interface product line, engineered specifically for robust, low-power, sink-side video switching in consumer electronics where signal integrity, ESD resilience, and HDMI compliance are critical.
FAQ
What is the maximum supported resolution and color depth for TMDS261PAGR?
The TMDS261PAGR supports up to 1080p resolution at 60 Hz with 16-bit color depth (Deep Color), enabled by its 3 Gbps per-channel data rate capability and HDMI 1.3a compliance. It does not support 4K/UHD resolutions, which require ≥6 Gbps bandwidth per lane-beyond the specification of TMDS261PAGR.
How does the TMDS clock-detect feature function in TMDS261PAGR?
In TMDS261PAGR, the clock-detect circuit monitors the selected input port for a valid TMDS clock. When detected, it enables 50-Ω terminations on TMDS data lines and releases the output drivers from high-impedance state. If no clock is present, TMDS outputs remain high-Z and input terminations disconnect-reducing normal-mode power consumption by >90%.
Can TMDS261PAGR be used in GPIO mode without an I²C controller?
Yes, TMDS261PAGR operates in GPIO mode when I2C_SEL is held high. Port selection is then controlled directly by logic levels on S1 and S2 pins, and low-power mode is activated by pulling LP low. No I²C controller is needed-default edge-rate and DDC OVS settings apply, simplifying implementation in resource-constrained systems.
What is the purpose of the VSadj pin on TMDS261PAGR?
The VSadj pin on TMDS261PAGR sets the TMDS output voltage swing by connecting an external precision resistor (4.02 kΩ ±10%). This allows fine-tuning of VOD(pp) to meet HDMI compliance test limits-particularly critical for passing the TMDS Termination Voltage Test during HDMI certification, where swing must fall within 800–1200 mV.
Does TMDS261PAGR support HDCP passthrough?
TMDS261PAGR does not decrypt or process HDCP keys-it is a transparent physical-layer switch. HDCP authentication occurs end-to-end between source and sink; the TMDS261PAGR preserves the encrypted TMDS stream and DDC channel integrity, enabling full HDCP 1.4 passthrough when used with compliant sources and sinks.
TMDS261PAGR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-TQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Switch
- Applications:
- Video Display
- Standards:
- HDMI 1.3a
- Control Interface:
- GPIO, I2C
- Voltage - Supply:
- 3.0V ~ 3.6V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 64-TQFP (10x10)
TMDS261PAGR FAQ
1.How can I place an order for TMDS261PAGR through Aetrix?
Please submit a Request for Quotation (RFQ) for TMDS261PAGR 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 TMDS261PAGR reliable?
The price and inventory of TMDS261PAGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMDS261PAGR is usually 5 days.
3.What payment methods are accepted for TMDS261PAGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMDS261PAGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMDS261PAGR?
TMDS261PAGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMDS261PAGR 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 TMDS261PAGR?
For technical support, including TMDS261PAGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMDS261PAGR requirements.
6.How does Aetrix verify that TMDS261PAGR is sourced from the original manufacturer or authorized distributors?
All TMDS261PAGR 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 TMDS261PAGR meets industry standards.
7.What is the process for return or replacement of TMDS261PAGR?
All TMDS261PAGR units undergo pre-shipment inspection (PSI). If there is an issue with TMDS261PAGR, 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 TMDS261PAGR part is unused and in its original packaging.
Return procedure for TMDS261PAGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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