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Texas Instruments TMDS250PAGR
- Part No.:
- TMDS250PAGR
- Manufacturer:
- Texas Instruments
- Category:
- Video Processing
- Package:
- 64-TQFP
- Datasheet:
-
TMDS250PAGR.pdf
- Description:
- IC VIDEO SWITCH 64TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,855
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Product details
Overview
TMDS250PAGR from Texas Instruments is a 2-to-1 HDMI/DVI switch IC for digital video routing, supporting 2.5 Gbps signaling (1080p/12-bit), dual 3.3-V/5-V supplies, integrated 50-Ω receiver termination, and selectable EQ for short/long HDMI cables. It enables source selection between two HDMI inputs to a single display in STB, digital TV, and DVD player systems.
For engineers reviewing the TMDS250PAGR datasheet, TMDS250PAGR pinout, TMDS250PAGR application, or TMDS250PAGR equivalent, key selection criteria include HDMI 1.3a compliance, intra-pair skew < 40 ps, inter-pair skew < 65 ps, HBM ESD > 8 kV on TMDS inputs, and support for 5-V-to-3.3-V DDC level shifting.
Technical Context
The TMDS250PAGR implements a 2-port multiplexer architecture with independent TMDS channel switching, hot-plug detect (HPD) pass-through logic, and DDC I²C pass-gate control. Each port includes four differential TMDS input pairs (A1/B1–A2/B2), sink-side outputs (Y1/Z1–Y4/Z4), and dedicated HPD/SDA/SCL I/Os.
It features dual-supply operation: 3.3 V (VCC) powers TMDS drivers/receivers and internal switching logic, while 5 V (VDD) powers HPD circuitry, DDC I/O buffers, and source-select control. Receiver equalization (EQ pin) configures frequency response for either HDMI 1.3-compliant cables (EQ = Low) or up to 10 m of 28 AWG cable (EQ = High).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Signaling Rate | Up to 2.5 Gbps - supports 1080p resolution at 12-bit color depth without compression |
| Input Termination | Integrated 50-Ω resistors per TMDS pair - eliminates need for external termination components |
| Intra-Pair Skew | < 40 ps - ensures timing alignment within each differential channel for signal integrity |
| Inter-Pair Skew | < 65 ps - maintains phase coherence across all four TMDS channels |
| ESD Protection | HBM > 8 kV on TMDS inputs - meets robustness requirements for consumer HDMI interfaces |
| Supply Voltages | VCC = 3.3 V ±10 % (TMDS core); VDD = 5 V ±10 % (HPD/DDC/control) - enables low-power standby via VCC shutdown |
| Operating Temperature | 0°C to 70°C - qualified for commercial-grade digital TV and set-top box environments |
Pinout & Package
TMDS250PAGR is housed in a 64-pin TQFP (PAG) package with exposed thermal pad, RoHS-compliant and 260°C reflow rated. Pin layout supports high-speed differential routing with adjacent ground pins and symmetrical TMDS I/O placement.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A11–A14, B11–B14 | Port 1 TMDS+ / TMDS− inputs | Accept differential HDMI data/clock from first source; internally terminated when selected |
| A21–A24, B21–B24 | Port 2 TMDS+ / TMDS− inputs | Accept differential HDMI data/clock from second source; terminated only when active |
| Y1–Y4, Z1–Z4 | Sink TMDS+ / TMDS− outputs | Drive HDMI receiver; output swing controlled by VSADJ resistor (4.02 kΩ typical) |
| SCL1/SDA1, SCL2/SDA2 | Port 1/2 DDC I²C bidirectional lines | Pass through EDID communication; 5-V tolerant with internal pass-gates |
| SCL_SINK/SDA_SINK | Sink DDC I²C bidirectional lines | Interface to display's EDID EEPROM; supports 3.3-V pull-ups for HDMI compliance |
| HPD1/HPD2 | Port 1/2 HPD status outputs | Open-drain 5-V TTL outputs mirroring HPD_SINK state when respective port is selected |
| HPD_SINK | Sink HPD input | Monitors display connection status; drives HPD1/HPD2 outputs and enables DDC handshake |
| S1/S2 | Source select control inputs | LVTTL logic selects Port 1 (S1=L,S2=H), Port 2 (S1=H,S2=L), or disables both (S1=S2=H) |
| EQ | Equalization mode control | Configures receiver frequency response: Low = short-cable mode, High = long-cable compensation |
| VSADJ | Output voltage swing control | External 4.02-kΩ resistor sets TMDS output swing to 400–600 mVpp for HDMI compliance |
| VCC/VDD/GND | Power supply terminals | VCC (3.3 V) powers TMDS path; VDD (5 V) powers HPD/DDC; separate grounds reduce noise coupling |
Key Features
| Feature | Design Value |
|---|---|
| Footprint compatibility | Pin-compatible with TMDS351 (3-to-1 variant) - enables scalable design reuse across 2- and 3-port systems |
| Selectable receiver EQ | Two-level adaptive equalization - compensates for cable loss up to 10 m (28 AWG) without external tuning |
| Switchable input termination | On-demand 50-Ω termination per active port - reduces power draw and simplifies source detection |
| Standby power optimization | VCC shutdown capability - cuts TMDS path current while retaining HPD/DDC functionality for EDID reads in standby |
| DDC level shifting | 5-V-to-3.3-V translation on SCL_SINK/SDA_SINK - ensures interoperability with 3.3-V display controllers |
| Hot-plug coordination | HPD pass-through with port-select gating - enables automatic source discovery and seamless display negotiation |
Applications
| Set-Top Box (STB) | Digital Television |
|---|---|
Use Scenario: Switching between satellite and streaming HDMI sources to a single display panel. IC Role / Device Role / Timing Role: 2-to-1 HDMI multiplexer managing four TMDS lanes, HPD handshaking, and DDC EDID exchange. Use Value: Enables seamless source switching without display retraining; supports 1080p/12-bit content and HDMI 1.3a compliance. |
Use Scenario: Routing HDMI signals from multiple tuners or media players into a unified video processing pipeline. IC Role / Device Role / Timing Role: Dual-input video interface switch with integrated termination, skew control, and hot-plug management. Use Value: Reduces BOM count by eliminating external terminations; intra-pair skew < 40 ps preserves pixel clock integrity. |
| DVD/Blu-ray Player | Digital Projector |
Use Scenario: Supporting dual HDMI outputs (e.g., main display + audio extractor) or input selection in AV receivers. IC Role / Device Role / Timing Role: HDMI source selector with DDC passthrough and HPD status mirroring. Use Value: Maintains EDID persistence during source changes; 5-V-to-3.3-V DDC level shifting ensures compatibility with legacy displays. |
Use Scenario: Integrating HDMI switching in portable or fixed-installation projectors requiring multi-source support. IC Role / Device Role / Timing Role: High-speed video switch enabling resolution-agnostic routing up to 2.5 Gbps. Use Value: Supports 1080p/60Hz with 12-bit color; inter-pair skew < 65 ps prevents visible image misalignment across RGB channels. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar HDMI switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TMDS251PAGR | Port 3 disabled; Ports 1 & 2 enabled - identical pinout and electrical specs but different default port enablement | Used where only two active inputs are required and third port must be permanently inactive | Select TMDS251PAGR if system requires guaranteed disablement of unused port without external logic |
| TMDS351PAGR | 3-to-1 architecture; same 64-pin TQFP footprint - adds third input port and corresponding control logic | Required for systems needing three HDMI inputs (e.g., premium AV receivers) | Choose TMDS351PAGR when future expansion to three sources is planned and PCB layout allows |
Compared with TMDS250PAGR, TMDS251PAGR offers identical performance with fixed two-port activation, while TMDS351PAGR provides scalability to three inputs at the cost of increased control complexity - both share the same thermal profile, skew specs, and HDMI 1.3a compliance.
Availability
TMDS250PAGR is available at Aetrix Electronics and suitable for digital TV, set-top box, and DVD player designs requiring stable component supply, HDMI 1.3a compliance, and production-ready 64-pin TQFP packaging.
Supply support for TMDS250PAGR 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 high-speed interface solutions.
The TMDS250PAGR belongs to TI's HDMI/DVI interface switch product line, designed specifically for consumer electronics video routing applications requiring low-skew, high-bandwidth signal integrity and seamless EDID/HPD management.
FAQ
What is the maximum supported resolution and color depth for TMDS250PAGR?
The TMDS250PAGR supports up to 1080p resolution at 12-bit color depth, enabled by its 2.5 Gbps per-channel signaling rate. This covers full HD video with deep color (HDMI 1.3a), including 480i/p, 720i/p, and 1080i/p formats. The device does not support 4K/UHD resolutions, which require higher bandwidth than the TMDS250PAGR's specification allows.
How does the EQ pin affect TMDS250PAGR performance in real-world cabling?
The EQ pin on TMDS250PAGR selects between two equalization profiles: EQ = Low optimizes for HDMI 1.3-compliant short cables (e.g., 3 m, 30 AWG), while EQ = High compensates for longer runs up to 10 m of 28 AWG cable. This directly reduces residual jitter - e.g., peak-to-peak jitter drops from ~18% Tbit to ~10% Tbit at 2.228 Gbps when switching from Low to High EQ for 10-m cables.
Can TMDS250PAGR operate with only the 5-V supply active?
Yes - TMDS250PAGR supports partial power-down: with VDD = 5 V active and VCC = 0 V, the HPD, DDC, and source-select circuits remain functional. This allows EDID reads and hot-plug detection during system standby while eliminating TMDS path current draw. The TMDS outputs enter high-impedance state, and all HPD outputs follow HPD_SINK.
What is the purpose of the VSADJ pin on TMDS250PAGR, and what resistor value is required?
The VSADJ pin on TMDS250PAGR sets the differential output voltage swing via an external precision resistor to ground. A 4.02-kΩ ±10% resistor achieves the HDMI-compliant range of 400–600 mVpp (500 mV typical). Deviations outside this tolerance shift output amplitude, risking link failure or excessive EMI - TI specifies RVSADJ = 3.66–4.47 kΩ for full-spec operation.
Does TMDS250PAGR require external termination resistors on TMDS lines?
No - TMDS250PAGR integrates 50-Ω termination resistors at each TMDS receiver input (A1/B1–A2/B2), pulled to VCC. These are automatically enabled only when the corresponding port is selected, eliminating the need for external termination components and reducing PCB area and BOM cost. External terminations are neither required nor recommended.
TMDS250PAGR 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:
- Logic
- Voltage - Supply:
- 3.0V ~ 3.6V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 64-TQFP (10x10)
TMDS250PAGR FAQ
1.How can I place an order for TMDS250PAGR through Aetrix?
Please submit a Request for Quotation (RFQ) for TMDS250PAGR 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 TMDS250PAGR reliable?
The price and inventory of TMDS250PAGR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMDS250PAGR is usually 5 days.
3.What payment methods are accepted for TMDS250PAGR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMDS250PAGR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMDS250PAGR?
TMDS250PAGR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMDS250PAGR 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 TMDS250PAGR?
For technical support, including TMDS250PAGR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMDS250PAGR requirements.
6.How does Aetrix verify that TMDS250PAGR is sourced from the original manufacturer or authorized distributors?
All TMDS250PAGR 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 TMDS250PAGR meets industry standards.
7.What is the process for return or replacement of TMDS250PAGR?
All TMDS250PAGR units undergo pre-shipment inspection (PSI). If there is an issue with TMDS250PAGR, 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 TMDS250PAGR part is unused and in its original packaging.
Return procedure for TMDS250PAGR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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