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Texas Instruments TMDS442PNP
- Part No.:
- TMDS442PNP
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 128-TQFP Exposed Pad
- Datasheet:
-
TMDS442PNP.pdf
- Description:
- IC INTFACE SPECIALIZED 128HTQFP
- Quantity:
- Payment:
- Shipping:
Inventory:173
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Product details
Overview
TMDS442PNP from Texas Instruments is a 4-to-2 single-link or 2-to-1 dual-link DVI/HDMI physical layer switch IC for digital video routing. It supports 2.25 Gbps signaling rate, 3.3-V supply operation, HDMI 1.3a compliance, and integrated 50-Ω TMDS receiver terminations with 8-dB input equalization-enabling reliable 5-meter+ HDMI cable operation in picture-in-picture TV systems.
For engineers reviewing the TMDS442PNP datasheet, TMDS442PNP pinout, TMDS442PNP application, or TMDS442PNP equivalent, key selection criteria include its dual-sink port control via GPIO/I²C, selectable AC de-emphasis per output, I²C repeater isolation, high-impedance outputs when disabled, and compatibility with standard HDMI receivers requiring 800–1200 mVPP differential swing and ≤74 ps residual jitter at 2.25 Gbps.
Technical Context
The TMDS442PNP implements a dual 4-to-1 multiplexer architecture with independent sink port control logic, supporting simultaneous switching of four TMDS source channels to two independent display blocks. Each sink port integrates quad terminated TMDS receivers with programmable 8-dB equalization and configurable AC de-emphasis (PRE pin) to compensate for channel loss.
Its I²C interface includes both source-side DDC buses (SCL/SDA per port) and sink-side DDC drivers (SCL_SINK/SDA_SINK), isolated via an internal I²C repeater that decouples bus capacitance. Control is implemented through either GPIO pins (SA/SB/OE/I2CEN/PRE per sink) or local I²C (LC_SCL/LC_SDA) depending on GE pin state.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Signaling Rate | Up to 2.25 Gbps - supports 1080i/p, 720i/p, and 480i/p resolutions at up to 12-bit color depth |
| Supply Voltage | 3.3 V nominal (3.0–3.6 V range) - compatible with standard low-voltage digital video system rails |
| Differential Output Swing | 800–1200 mVPP - meets TMDS specification across all four TMDS lanes per sink port |
| Input Equalization | 8-dB receiver EQ - compensates for signal loss over 5-meter+ HDMI cables without external components |
| ESD Protection | >6 kV HBM on TMDS inputs - exceeds IEC 61000-4-2 Level 4 for robust board-level ESD immunity |
| Operating Temperature | 0°C to +70°C - qualified for commercial digital AV equipment environments |
| Package | 128-pin PowerPAD TQFP (PNP) - thermally enhanced for sustained 1.43 W power dissipation |
Pinout & Package
TMDS442PNP is housed in a 128-pin PowerPAD TQFP (PNP) package with exposed thermal pad for improved heat dissipation. The package supports JEDEC-standard 260°C reflow and RoHS compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A11–A14, B11–B14 | Source Port 1 TMDS+ / TMDS− inputs | Accept differential video data/clock from first HDMI/DVI source; internally terminated to 50 Ω |
| Y11–Y14, Z11–Z14 | Sink Port 1 TMDS+ / TMDS− outputs | Drive differential video signals to first display; support AC de-emphasis via PRE1 |
| SA1, SB1, OE1, I2CEN1, PRE1 | Sink Port 1 control inputs | GPIO-selectable source (SA1/SB1), output enable (OE1), DDC driver enable (I2CEN1), de-emphasis mode (PRE1) |
| SCL_SINK1, SDA_SINK1 | Sink Port 1 DDC I²C interface | Forward EDID communication to connected display; voltage level adjustable via OVS pin |
| HPD_SINK1, 5V_SINK1 | Sink Port 1 hot-plug detection | Monitor display presence and power status; drive HPD line per HDMI specification |
Key Features
| Feature | Design Value |
|---|---|
| I²C repeater isolation | Eliminates cumulative bus capacitance between source and sink sides, enabling stable multi-display DDC communication |
| Selectably enabled TMDS outputs | OE1/OE2 pins place outputs in high-impedance state when inactive - prevents signal contention during port switching |
| Per-sink AC de-emphasis | Pull PRE1/PRE2 high to apply 3-dB pre-compensation - optimizes signal integrity over flat cables or long traces |
| Integrated 50-Ω receiver termination | Removes need for 100-Ω external differential resistors at each TMDS input - reduces BOM count and layout area |
| Hot-plug detector synchronization | HPD output of selected source follows HPD_SINK status - ensures compliant HDMI plug-and-play behavior |
Applications
| Picture-in-Picture Digital TV | Digital Projector Input Switching |
|---|---|
Use Scenario: A high-end LCD TV receives HDMI feeds from set-top box and Blu-ray player simultaneously, displaying main content plus inset window. IC Role / Device Role / Timing Role: TMDS442PNP routes two independent HDMI streams to separate video processing paths while maintaining synchronized audio/video handshaking. Use Value: Enables true PIP without external mux ICs or FPGA logic; preserves HDCP handshake integrity across both active sinks. | Use Scenario: Conference room projector accepts inputs from laptop, document camera, and media player, with instant switching between sources. IC Role / Device Role / Timing Role: Acts as 4-input, 1-output HDMI switch with automatic EDID passthrough and hot-plug detection per source. Use Value: Eliminates manual EDID management; supports seamless source switching with sub-20 ns TMDS enable/disable timing. |
| Audio/Video Receiver Hub | HDMI Distribution Amplifier |
Use Scenario: AV receiver aggregates HDMI sources (game console, streaming stick, DVR) and routes selected stream to TV and secondary display. IC Role / Device Role / Timing Role: Provides dual-sink capability: one path to primary display, second to zone 2 output with independent control. Use Value: Enables independent resolution/format selection per sink; maintains separate DDC channels to avoid EDID conflicts. | Use Scenario: Broadcast studio distributes single HDMI source to multiple monitors with identical signal fidelity and timing. IC Role / Device Role / Timing Role: Configured as 1-to-2 splitter using fixed SA/SB settings and enabled OE1/OE2 - replicates TMDS and DDC to both outputs. Use Value: Delivers matched skew (<150 ps inter-pair) and <30 ps residual jitter - critical for genlock-capable monitoring setups. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DVI/HDMI switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TMDS443PNP | 3-to-2 DVI/HDMI switch; lacks fourth source port and local I²C interface (LC pins) | Reduced source count limits use in quad-input AV hubs; no local configuration bus | Select when only three sources required and GPIO-only control suffices |
| ON Semiconductor NB7L572MNR2G | 2×2 LVDS/PECL switch; no integrated TMDS termination, EQ, or HDMI-specific features (HPD, DDC) | Requires external termination, level-shifting, and discrete HPD/EDID management circuitry | Select for non-HDMI protocols or custom high-speed differential routing where full HDMI compliance is unnecessary |
Compared with TMDS443PNP, TMDS442PNP adds a fourth source port and local I²C configuration, enabling more flexible multi-source routing; compared with NB7L572MNR2G, it delivers turnkey HDMI compliance-including integrated termination, EQ, HPD, and DDC repeater-reducing design effort by ~12 BOM items and eliminating signal integrity tuning.
Availability
TMDS442PNP is available at Aetrix Electronics and suitable for digital TV, AV receiver, projector, and HDMI distribution amplifier designs requiring stable component supply, long-lifecycle availability, and guaranteed traceable sourcing.
Supply support for TMDS442PNP 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 company delivering analog and embedded processing solutions for industrial, automotive, and consumer applications.
The TMDS442PNP belongs to TI's high-speed interface product line, engineered specifically for HDMI/DVI signal routing in consumer AV equipment with emphasis on plug-and-play compatibility, signal integrity preservation, and minimal external component count.
FAQ
What is the maximum supported HDMI version for TMDS442PNP?
The TMDS442PNP is explicitly specified as compatible with HDMI 1.3a in its official datasheet (SLLS757A). It supports the 2.25 Gbps signaling rate required for 1080p60 and deep color modes defined in that revision. While later HDMI versions retain backward compatibility, TMDS442PNP does not support features introduced after 1.3a such as HDMI Ethernet Channel or Audio Return Channel. For TMDS442PNP, HDMI 1.3a represents its fully validated and documented interface capability.
How does the TMDS442PNP handle EDID communication between sources and sinks?
The TMDS442PNP incorporates an I²C repeater that isolates the capacitance of source-side DDC buses (SCL1/SDA1 through SCL4/SDA4) from sink-side DDC lines (SCL_SINK1/SDA_SINK1 and SCL_SINK2/SDA_SINK2). When I2CEN1 or I2CEN2 is asserted, the corresponding sink port actively forwards EDID reads/writes between the display and the selected source port. Unselected source ports are electrically disconnected from the DDC bus, preventing contention. This architecture ensures reliable EDID handshaking for TMDS442PNP in multi-source HDMI systems.
Can TMDS442PNP be used in a 1-to-2 HDMI splitter configuration?
Yes, TMDS442PNP can be configured as a 1-to-2 HDMI splitter by hard-wiring SA1=SB1=SA2=SB2 to select the same source port (e.g., Port 1) and asserting OE1 and OE2 to enable both sink outputs. In this mode, TMDS442PNP replicates TMDS, DDC, HPD, and 5V_PWR signals to both sinks. Its matched inter-pair skew (<150 ps) and low residual jitter (<74 ps at 2.25 Gbps) ensure signal fidelity across both outputs - making TMDS442PNP suitable for broadcast monitoring or dual-display presentation applications requiring synchronized outputs.
What is the function of the VSADJ pin on TMDS442PNP?
The VSADJ pin on TMDS442PNP sets the TMDS output differential voltage swing by connecting an external precision resistor to ground. A 4.64 kΩ resistor (typical) establishes compliance with the TMDS standard's 800–1200 mVPP requirement. This resistor adjusts the current source driving the TMDS output stage, directly controlling output amplitude without requiring feedback loops or calibration. For TMDS442PNP, VSADJ enables consistent signal levels across process/voltage/temperature variations - a critical factor for HDMI link training and eye diagram margin.
Does TMDS442PNP support dual-link DVI operation?
Yes, TMDS442PNP supports dual-link DVI operation in its 2-to-1 configuration: two source ports (e.g., Port 1 and Port 2) feed a single sink port (e.g., Sink 1), with each source providing one DVI link (four TMDS pairs). The device's architecture allows independent routing of up to eight TMDS channels - sufficient for dual-link DVI's eight data channels plus clock. However, TMDS442PNP does not reconstruct or retiming dual-link pixel mapping; it functions as a passive channel router. System-level dual-link DVI functionality depends on upstream source and downstream receiver coordination - a capability confirmed for TMDS442PNP in TI's application documentation.
TMDS442PNP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 128-TQFP Exposed Pad
- Packaging:
- Bulk
- Product Status:
- Active
- Applications:
- Digital TV, Displays, Digital KVM, Graphics Processing
- Interface:
- I2C
- Voltage - Supply:
- 3V ~ 3.6V
- Supplier Device Package:
- 128-HTQFP (14x14)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
TMDS442PNP FAQ
1.How can I place an order for TMDS442PNP through Aetrix?
Please submit a Request for Quotation (RFQ) for TMDS442PNP 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 TMDS442PNP reliable?
The price and inventory of TMDS442PNP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TMDS442PNP is usually 5 days.
3.What payment methods are accepted for TMDS442PNP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TMDS442PNP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TMDS442PNP?
TMDS442PNP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TMDS442PNP 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 TMDS442PNP?
For technical support, including TMDS442PNP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TMDS442PNP requirements.
6.How does Aetrix verify that TMDS442PNP is sourced from the original manufacturer or authorized distributors?
All TMDS442PNP 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 TMDS442PNP meets industry standards.
7.What is the process for return or replacement of TMDS442PNP?
All TMDS442PNP units undergo pre-shipment inspection (PSI). If there is an issue with TMDS442PNP, 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 TMDS442PNP part is unused and in its original packaging.
Return procedure for TMDS442PNP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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