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Texas Instruments TMDS361BPAG
- Part No.:
- TMDS361BPAG
- Manufacturer:
- Texas Instruments
- Category:
- Video Processing
- Package:
- 64-TQFP
- Datasheet:
-
TMDS361BPAG.pdf
- Description:
- IC VIDEO HDMI/DVI SWITCH 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:902
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Product details
Overview
TMDS361BPAG from Texas Instruments is a 3:1 HDMI/DVI sink-side switch IC supporting up to 3 Gbps signaling, 1080p/16-bit color, and adaptive equalization for ≤20-m cables. It integrates TMDS clock detection, DDC repeater, and hot-plug detect logic for HDTV display terminals in digital TV, DVD players, and game machines.
For engineers reviewing the TMDS361BPAG datasheet, TMDS361BPAG pinout, TMDS361BPAG application, or TMDS361BPAG equivalent, key selection criteria include HDMI 1.3a compliance, 64-pin TQFP package compatibility with TMDS351, I²C/GPIO dual-control mode, and robust 10-kV HBM ESD protection on all TMDS/DDC/HPD pins.
Technical Context
The TMDS361BPAG implements a sink-side 3×1 multiplexer with adaptive equalization per input port, automatically compensating for ISI loss up to 20 dB at 3 Gbps. Its TMDS clock-detect circuit enables automatic power management by enabling data-line terminations only upon valid clock detection.
It supports dual configuration interfaces: I²C slave mode (I2C_SEL low) for advanced control of edge rate, DDC OVS, and port selection; or GPIO mode (I2C_SEL high) using S1/S2 pins for port selection and LP pin for low-power entry. All three power modes-normal, standby, and low-power-are hardware- and register-controllable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 3 Gbps - supports full HDMI 1.3a bandwidth for 1080p@60Hz with 16-bit color depth |
| Input Voltage Range | 0.15–1.56 VPP differential - accommodates non-compliant HDMI source signals |
| ESD Protection | 10 kV HBM on TMDS/DDC/HPD pins - meets system-level surge requirements for consumer HDMI ports |
| Supply Voltage | 3.0–3.6 V - single 3.3-V rail operation compatible with standard digital TV power domains |
| Operating Temp | 0°C to +70°C - qualified for commercial-grade HDTV and set-top box environments |
| Power Dissipation | 560–780 mW normal mode; 10–20 mW standby; 1–2 mW low-power - enables thermal design for compact PCB layouts |
| Equalization Range | Up to 20 dB compensation - extends usable HDMI cable length to 20 m at 2.25 Gbps for 1080p |
Pinout & Package
TMDS361BPAG uses a 64-pin TQFP (PAG-64) package with 0.5-mm pitch, thermally enhanced for HDMI switching applications in space-constrained displays. Pin functions are fully defined per TI SLLS988A Rev. July 2011.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK+_1 / CLK–_1 D[0:2]+_1 / D[0:2]–_1 | Port-1 TMDS differential inputs | Accepts HDMI/DVI video clock and three data lanes; supports 3-Gbps signaling with adaptive equalization |
| CLK+_SINK / CLK–_SINK D[0:2]+_SINK / D[0:2]–_SINK | TMDS sink differential outputs | Drives downstream HDMI receiver; output swing adjustable via VSadj resistor for HDMI compliance tuning |
| S1/SCL / S2/SDA / I2C_SEL / LP | Configuration & control interface | Selects between GPIO (S1/S2) or I²C control; LP forces low-power state; I2C_SEL configures interface mode |
| HPD_SINK / HPD[1:3] | Hot-plug detect I/O | HPD_SINK receives sink-side plug event; HPD[1:3] drive source-side HPD lines, active only for selected port |
| SCL_SINK / SDA_SINK SCL[1:3] / SDA[1:3] | DDC I²C repeater channels | Isolates source/sink DDC capacitance; enables EDID read/write across selected port without bus contention |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Equalization | Compensates for up to 20 dB channel loss automatically - eliminates manual tuning for varying HDMI cable lengths |
| TMDS Clock-Detect Logic | Enables/disables TMDS terminations and outputs based on presence of valid clock - reduces dynamic power by >95% during idle |
| DDC Repeater Function | Buffers and isolates I²C signals between sink and up to three sources - ensures reliable EDID handshaking in multi-source systems |
| VSadj Voltage Swing Control | Adjusts TMDS output swing via external 4.02-kΩ±10% resistor - fine-tunes signal integrity to pass HDMI compliance tests |
| I²C/GPIO Dual Interface | Configurable via I2C_SEL pin - supports simple GPIO port selection in cost-sensitive designs or full I²C programmability for feature-rich systems |
Applications
| High-Definition Digital TV | DVD Player or DVR |
|---|---|
Use Scenario: Multi-source HDMI switching in LCD/plasma/DLP HDTVs with three input devices (e.g., Blu-ray, game console, streaming box). IC Role / Device Role / Timing Role: Sink-side 3:1 TMDS multiplexer managing clock/data routing, DDC handshaking, and HPD signaling to upstream sources. Use Value: Enables seamless source switching without display retraining; adaptive equalization maintains signal integrity over long internal board traces. | Use Scenario: HDMI output stage in DVD players or DVRs feeding multiple display options (TV, projector, monitor). IC Role / Device Role / Timing Role: Source-facing TMDS buffer and level translator ensuring HDMI 1.3a-compliant output swing and timing margins. Use Value: Robust common-mode tolerance accepts legacy/non-compliant receivers; 10-kV ESD protects against user-handling surges at external connectors. |
| Game Machine | Digital Camcorder |
Use Scenario: HDMI output interface in gaming consoles requiring low-latency video switching and stable EDID negotiation. IC Role / Device Role / Timing Role: TMDS transmitter with programmable edge rates to suppress EMI during high-speed GPU output bursts. Use Value: Four selectable rise/fall time settings reduce radiated emissions - aids FCC/CE certification without added shielding. | Use Scenario: Portable camcorder HDMI output supporting playback on TVs or monitors with variable cable lengths. IC Role / Device Role / Timing Role: Adaptive equalizer and clock-detect circuit ensure reliable link establishment even with marginal source timing or long cables. Use Value: Automatic power-down when no clock detected extends battery life; 2-mW low-power mode minimizes standby drain. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar HDMI sink-switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMDS351BPAG | 2:1 switch; no adaptive equalization; identical 64-pin TQFP footprint and I²C/GPIO interface | Limited to dual-input systems; lacks cable-length compensation for ≥10-m HDMI runs | Select when only two sources required and cost optimization is critical; drop-in replacement with no layout change |
| PI3HDX1204ZLEX | 4:1 HDMI 2.0 switch; supports 6 Gbps; integrated level shifters; different 48-pin QFN package | Supports higher-resolution 4K@30Hz but requires PCB redesign and firmware updates for new register map | Choose for future-proofing to HDMI 2.0; not pin-compatible - requires full schematic and layout revision |
Compared with TMDS351BPAG, TMDS361BPAG adds third-port support and adaptive equalization essential for long-cable 1080p systems; versus PI3HDX1204ZLEX, it offers lower cost and proven integration in commercial HDTV designs but lacks HDMI 2.0 bandwidth.
Availability
TMDS361BPAG is available at Aetrix Electronics and suitable for high-definition digital TV, DVD player or DVR, and game machine applications requiring stable component supply, HDMI 1.3a compliance, and production-ready thermal performance.
Supply support for TMDS361BPAG 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 solutions for industrial, automotive, and consumer markets.
The TMDS361B product line delivers HDMI/DVI sink-side switching ICs optimized for cost-sensitive, space-constrained HDTV and multimedia display systems with robust signal integrity and system-level compliance support.
FAQ
What is the primary function of the TMDS361BPAG in an HDMI system?
The TMDS361BPAG serves as a 3:1 sink-side HDMI/DVI switch that routes TMDS video signals from up to three input sources to a single display terminal. It manages clock/data path selection, DDC repeater functionality, hot-plug detection, and adaptive equalization - all within a single 64-pin TQFP package. The TMDS361BPAG is specifically designed for use in HDTVs, DVD players, and game machines where multi-source HDMI switching is required without retraining the display.
Does the TMDS361BPAG support HDMI 2.0 or higher specifications?
No, the TMDS361BPAG supports HDMI 1.3a and DVI 1.0 specifications, with a maximum signaling rate of 3 Gbps - sufficient for 1080p@60Hz with 16-bit color depth. It does not support HDMI 2.0 (6 Gbps), HDMI 2.1 (10+ Gbps), or features such as HDR metadata transport or dynamic refresh rate. For HDMI 2.0 compatibility, alternative switches like the PI3HDX1204ZLEX must be evaluated, though they require package and interface changes.
How does the TMDS361BPAG handle power management during inactive input periods?
The TMDS361BPAG uses its integrated TMDS clock-detect circuit to automatically enter low-power states when no valid TMDS clock is present on the selected port. In this condition, input TMDS data-line terminations disconnect and outputs go high-impedance, reducing supply current from ~216 mA to ~18 mA. Full functionality resumes within 300–500 ns after clock detection. This behavior is inherent to the TMDS361BPAG design and requires no software intervention.
Can the TMDS361BPAG be used in source-side applications like HDMI switch boxes?
No, the TMDS361BPAG is explicitly designed for sink-side applications only - i.e., placed between multiple HDMI sources and a single display. Texas Instruments documentation states it is "not intended for source side applications such as external switch boxes." Its architecture (e.g., DDC repeater directionality, HPD output logic, clock-detect dependency) assumes the device drives a downstream receiver, not upstream sources. Using it in source-side roles may result in EDID, timing, or compliance failures.
What is the role of the VSadj pin on the TMDS361BPAG, and how is it configured?
VSadj is an analog input pin that sets the TMDS output voltage swing by connecting an external precision resistor (4.02 kΩ ±10%) to ground. This adjusts the AVCC-referenced output amplitude to meet HDMI compliance requirements for differential swing (800–1200 mVPP) and common-mode stability. Resistor tolerance directly impacts output accuracy; deviation beyond ±10% risks failing HDMI electrical tests. Configuration is passive and occurs at power-up - no register writes or I²C interaction is needed for basic operation of the TMDS361BPAG.
TMDS361BPAG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 64-TQFP
- Packaging:
- Tray
- Product Status:
- Active
- Function:
- Switch
- Applications:
- Video Display
- Standards:
- HDMI 1.3a
- Control Interface:
- GPIO, I2C, Logic
- Voltage - Supply:
- 3.0V ~ 3.6V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 64-TQFP (10x10)
TMDS361BPAG FAQ
1.How can I place an order for TMDS361BPAG through Aetrix?
Please submit a Request for Quotation (RFQ) for TMDS361BPAG 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 TMDS361BPAG reliable?
The price and inventory of TMDS361BPAG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMDS361BPAG is usually 5 days.
3.What payment methods are accepted for TMDS361BPAG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMDS361BPAG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMDS361BPAG?
TMDS361BPAG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMDS361BPAG 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 TMDS361BPAG?
For technical support, including TMDS361BPAG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMDS361BPAG requirements.
6.How does Aetrix verify that TMDS361BPAG is sourced from the original manufacturer or authorized distributors?
All TMDS361BPAG 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 TMDS361BPAG meets industry standards.
7.What is the process for return or replacement of TMDS361BPAG?
All TMDS361BPAG units undergo pre-shipment inspection (PSI). If there is an issue with TMDS361BPAG, 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 TMDS361BPAG part is unused and in its original packaging.
Return procedure for TMDS361BPAG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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