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Texas Instruments TMDS461PZTR
- Part No.:
- TMDS461PZTR
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 100-TQFP
- Datasheet:
-
TMDS461PZTR.pdf
- Description:
- IC INTERFACE SPECIALIZED 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,066
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Product details
Overview
TMDS461PZTR from Texas Instruments is a 4-to-1 HDMI/DVI digital video switch IC designed for sink-side display routing in high-definition consumer electronics. It supports 1080p resolution at up to 3 Gbps per TMDS channel, features adaptive equalization for up to 20-m HDMI cables, and integrates DDC repeater functionality with hot-plug detection across four input ports.
For engineers reviewing the TMDS461PZTR datasheet, TMDS461PZTR pinout, TMDS461PZTR application, or TMDS461PZTR equivalent, this device is critical for HDMI source aggregation in HDTV, LCD, plasma, and DLP® display systems requiring robust signal integrity, automatic port selection, and low-power management via I²C or GPIO control.
Technical Context
The TMDS461PZTR implements a 4:1 analog multiplexer architecture with integrated 50-Ω TMDS terminations, clock-detect circuitry, and analog adaptive equalizers per input channel. Its dual-mode control (I²C slave or GPIO) enables flexible system integration, while HPD logic and 5V_PWR sensing support full HDMI compliance including hot-plug negotiation and sink-side power indication.
It operates exclusively from a 3.3-V supply and provides three distinct power states: normal mode (220 mA typical), standby mode (5.5 mA, DDC/HPD active), and low-power mode (555 µA). The TMDS output stage supports 1.56 VPP differential swing with VSadj resistor tuning, and DDC I²C buffers include selectable offset voltage (OVS) for system-level capacitance isolation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 3 Gbps per TMDS channel - supports 1080p @ 16-bit color depth and Deep Color formats |
| Operating Temp | 0°C to 70°C - qualified for commercial-grade HDTV and display terminal environments |
| Supply Voltage | 3.3 V ±10% - single-rail operation eliminates need for auxiliary voltage rails |
| ESD Protection | ±10 kV HBM on all TMDS and DDC pins - meets HDMI source-side stress requirements |
| Equalization Range | Up to 20 dB ISI compensation - enables reliable operation over 20-m passive HDMI cables at 3 Gbps |
| Power Modes | Normal / Standby / Low-power - configurable via LP pin or I²C register for dynamic system power management |
| DDC Buffer OVS | 3 selectable offset ranges - isolates sink-side DDC capacitance to pass system-level HDMI compliance |
Pinout & Package
TMDS461PZTR is housed in a 100-pin TQFP (PZT) package with exposed thermal pad, optimized for HDMI signal integrity and thermal dissipation in space-constrained display PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK±_[1:4] | TMDS differential clock inputs (4 ports) | Accepts HDMI/DVI clock signals up to 3 Gbps; each pair enables port-specific clock detection |
| D[0:2]±_[1:4] | TMDS differential data inputs (4 ports × 3 channels) | Supports full 1080p RGB/YCbCr with embedded audio; adaptive equalization applied per port |
| CLK±_SINK, D[0:2]±_SINK | TMDS differential outputs | Drives single display sink; output edge rate configurable via I²C for EMI optimization |
| SCL/SDA[1:4], SCL_SINK, SDA_SINK | DDC bidirectional I²C interfaces | Repeats EDID communication between sources and sink; OVS pin selects sink-side buffer offset |
| HPD[1:4], HPD_SINK | Hot-plug detect I/O | Enables HDMI plug-and-play: selected port HPD follows HPD_SINK; non-selected follow 5V_PWR[x] |
| S1/S2, I2C_SEL, LP, IRQ | Control and status GPIOs | Enable port selection, mode configuration, low-power entry, and interrupt signaling for microcontroller coordination |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive Equalization | Per-port analog equalizer compensates up to 20 dB of cable loss at 3 Gbps - eliminates need for external redrivers in long-cable designs |
| Automatic Port Select | I²C-configurable priority-based port auto-selection using 5V_PWR presence - reduces firmware overhead in multi-source HDTVs |
| Robust TMDS Receive Stage | Accepts non-compliant common-mode voltages - ensures interoperability with legacy or marginally spec'd HDMI sources |
| DDC Repeater Function | Isolates source-side DDC capacitance from sink-side bus - prevents EDID read failures in multi-source systems |
| TMDS Output Edge-Rate Control | Four programmable rise/fall time settings - allows EMI tuning without hardware changes |
| VSadj Voltage Swing Tuning | External 4.02 kΩ resistor sets TMDS output amplitude - enables precise HDMI compliance margin adjustment |
Applications
| Home Theater AV Receiver | HDTV Input Switching Hub |
|---|---|
|
Use Scenario: Aggregating HDMI outputs from Blu-ray player, game console, set-top box, and streaming stick into a single TV input. IC Role / Device Role / Timing Role: Sink-side 4:1 TMDS switch with DDC repeater and HPD arbitration - manages EDID handshaking and hot-plug events across sources. Use Value: Enables seamless source switching without manual EDID re-reads or display retraining; adaptive equalization maintains signal integrity over 15-m interconnects. |
Use Scenario: Multi-input LCD TV with four HDMI jacks supporting simultaneous connection of diverse sources. IC Role / Device Role / Timing Role: Central TMDS routing IC with automatic port selection and 5V_PWR monitoring - detects active sources and routes valid TMDS streams. Use Value: Eliminates user-initiated port selection; clock-detect feature powers down inactive TMDS paths, reducing system power by >95% during idle periods. |
| Plasma Display Controller | DLP® Projector Input Module |
|
Use Scenario: High-bandwidth video processing board accepting HDMI inputs from broadcast and PC graphics sources. IC Role / Device Role / Timing Role: Signal-conditioning front-end with integrated termination, equalization, and DDC buffering - prepares TMDS signals for downstream receiver ASIC. Use Value: Compensates for signal degradation caused by long internal flex cables; VSadj tuning ensures optimal swing for downstream receiver sensitivity. |
Use Scenario: DLP® projector with HDMI input supporting 1080p/60 and Deep Color modes. IC Role / Device Role / Timing Role: HDMI compliance enabler - provides required TMDS termination, HPD logic, and DDC isolation per HDMI 1.3a specification. Use Value: Passes HDMI compliance testing including TMDS Termination Voltage Test when clock-detect is disabled via I²C; built-in 10-kV ESD protects against field-replaceable connector handling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar HDMI/DVI switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TMDS460PZTR | No adaptive equalization; max 1.65 Gbps data rate; lacks Automatic Port Select and VSadj tuning | Suitable only for ≤720p/1080i systems with short cables (<5 m); no I²C-based auto-selection | Select when cost sensitivity outweighs 1080p/3-Gbps and long-cable requirements |
| ON Semiconductor NB7L14MNR2G | Dedicated 4:1 LVDS/PECL mux; no HDMI-specific features (DDC, HPD, equalization); requires external level-shifting | Used in non-HDMI industrial video systems; lacks sink-side HDMI protocol awareness | Choose only for custom high-speed serial routing where HDMI compliance is not required |
Compared with TMDS461PZTR, TMDS460PZTR offers lower cost but sacrifices 1080p/3-Gbps capability and adaptive equalization, while NB7L14MNR2G provides raw muxing performance without HDMI-specific signal conditioning or protocol support - making TMDS461PZTR uniquely suited for certified consumer display applications.
Availability
TMDS461PZTR is available at Aetrix Electronics and suitable for HDTV manufacturing, LCD panel integration, and DLP® projector production requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for HDMI-compliant designs.
Supply support for TMDS461PZTR 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 decades of expertise in high-speed interface solutions for consumer electronics.
The TMDS461PZTR belongs to TI's HDMI/DVI interface product line, engineered specifically for sink-side video routing in high-definition displays - balancing signal integrity, protocol compliance, and system-level power efficiency.
FAQ
What is the maximum supported resolution and color depth for TMDS461PZTR?
The TMDS461PZTR supports HDMI and DVI signaling rates up to 3 Gbps per TMDS channel, enabling 1080p resolution with 16-bit color depth and Deep Color formats. This capability is confirmed in the official datasheet (SLLS915), where timing diagrams and electrical specifications validate operation at full 3-Gbps data rates across all four input ports and the sink output.
Does TMDS461PZTR support automatic port selection, and how is it configured?
Yes, TMDS461PZTR supports Automatic Port Select exclusively in I²C mode, enabled via bits 3–5 in register 0x02. It prioritizes ports based on 5V_PWR[x] presence and user-defined priority order. This feature is documented in Figures 4–7 and Table 8 of the SLLS915 datasheet, and requires I²C_SEL = HIGH and proper initialization of the AutoSelect control bits.
How does the adaptive equalization in TMDS461PZTR improve HDMI signal integrity?
The TMDS461PZTR includes analog adaptive equalizers per input port that automatically compensate for intersymbol interference (ISI) loss of up to 20 dB at 3 Gbps - equivalent to signal degradation over 20-m passive HDMI cables. This is measured and verified in Figure 19 of the SLLS915 datasheet, eliminating the need for external redriver ICs in long-cable consumer installations.
Can TMDS461PZTR operate in low-power mode while maintaining DDC communication?
No - in low-power mode (LP = LOW), all TMDS and DDC I/Os are disabled except the internal I²C logic and LP pin. To maintain DDC and HPD functionality while reducing power, TMDS461PZTR must be placed in standby mode via I²C register 0x02[7:6] = [0:1], which keeps DDC operational while disabling high-speed TMDS paths. This distinction is explicitly defined in the "Device Power" section of the SLLS915 datasheet.
What is the role of the VSadj pin on TMDS461PZTR, and what resistor value is recommended?
The VSadj pin on TMDS461PZTR adjusts the TMDS output differential voltage swing to meet HDMI compliance margins. A 4.02 kΩ ±10% resistor to ground sets the compliant 1.2–1.56 VPP range, as specified in Table 2 and validated in HDMI compliance testing. This tuning capability is unique to TMDS461PZTR and absent in earlier variants like TMDS460PZTR.
TMDS461PZTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 100-TQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Applications:
- Digital Video, Video Editing
- Interface:
- I2C
- Voltage - Supply:
- 3V ~ 3.6V
- Supplier Device Package:
- 100-TQFP (14x14)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
TMDS461PZTR FAQ
1.How can I place an order for TMDS461PZTR through Aetrix?
Please submit a Request for Quotation (RFQ) for TMDS461PZTR 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 TMDS461PZTR reliable?
The price and inventory of TMDS461PZTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMDS461PZTR is usually 5 days.
3.What payment methods are accepted for TMDS461PZTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMDS461PZTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMDS461PZTR?
TMDS461PZTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMDS461PZTR 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 TMDS461PZTR?
For technical support, including TMDS461PZTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMDS461PZTR requirements.
6.How does Aetrix verify that TMDS461PZTR is sourced from the original manufacturer or authorized distributors?
All TMDS461PZTR 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 TMDS461PZTR meets industry standards.
7.What is the process for return or replacement of TMDS461PZTR?
All TMDS461PZTR units undergo pre-shipment inspection (PSI). If there is an issue with TMDS461PZTR, 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 TMDS461PZTR part is unused and in its original packaging.
Return procedure for TMDS461PZTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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