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Texas Instruments TDP142RNQR
- Part No.:
- TDP142RNQR
- Manufacturer:
- Texas Instruments
- Category:
- Specialized
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
TDP142RNQR.pdf
- Description:
- IC INTERFACE SPECIALIZED 40WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,834
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Product details
Overview
TDP142RNQR from Texas Instruments is a DisplayPort 1.4 linear redriver IC supporting up to 8.1 Gbps per lane (HBR3) across four differential lanes, featuring up to 14 dB of receiver equalization, transparent link training compliance, and AUX/HPD signal snooping capability - deployed in notebooks, docking stations, and active DisplayPort cables to extend channel reach and restore signal integrity.
For engineers reviewing the TDP142RNQR datasheet, TDP142RNQR pinout, TDP142RNQR application, or TDP142RNQR equivalent, this page delivers verified technical context, GPIO/I2C configuration options, lane-aware power management, thermal performance data, and real-world implementation constraints for DisplayPort 1.4 system integration.
Technical Context
The TDP142RNQR implements a position-independent linear redriver architecture with per-lane differential input/output pairs (INDP0–3p/n, OUTDP0–3p/n), enabling placement in source, sink, or cable without disrupting DisplayPort link training. Its receiver equalization is configurable via DPEQ[1:0] pins or I2C registers, delivering 16 discrete gain settings (1.0–14.4 dB at 4.05 GHz) to compensate for board trace or cable insertion loss.
It supports dual-mode DisplayPort-to-HDMI conversion (AC-coupled), monitors native AUX writes to DPCD registers 0x00101 (LANE_COUNT_SET) and 0x00600 (SET_POWER_STATE) for dynamic lane activation/deactivation, and provides failsafe HPDIN/DPEN inputs with 2 ms debounce. Operation is enabled on a single 3.3 V supply across commercial temperature range (0°C to 70°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | 8.1 Gbps per lane (HBR3), compliant with VESA DisplayPort 1.4 standard |
| Equalization Gain | Up to 14 dB at 4.05 GHz, selectable via GPIO or I2C for precise channel loss compensation |
| Supply Voltage | 3.3 V ±10% - single-rail operation with 100 ms ramp requirement and 100 mV max noise |
| Power Consumption | 660 mW typical (4-lane active at 8.1 Gbps); 0.85 mW in shutdown mode |
| Operating Temperature | 0°C to 70°C (commercial grade - confirmed for TDP142RNQR per device marking and orderable addendum) |
| Differential Impedance | 75–120 Ω transmitter output impedance; 80–120 Ω receiver termination for robust signal integrity |
| Jitter Performance | 0.08 UIpp deterministic jitter and 0.135 UIpp total jitter at 8.1 Gbps (PRBS7) |
Pinout & Package
Package: WQFN-40 (RNQ), 4.0 mm × 6.0 mm body, 0.4 mm pitch, exposed thermal pad (GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (pins 1,6,20,28) | Power supply input | 3.3 V main supply - four dedicated pins reduce IR drop and improve PSRR |
| INDP0p/n – INDP3p/n (pins 9–10,12–13,15–16,18–19) | Differential DP input lanes | Four bidirectional AC-coupled DP lane inputs accepting 2000 mVPP dynamic swing |
| OUTDP0p/n – OUTDP3p/n (pins 39–40,36–37,33–34,30–31) | Differential DP output lanes | Four high-swing outputs (1500 mVPP) with 75–120 Ω differential impedance |
| AUXp/n (pins 24–25) | AUX channel interface | CMOS I/O pair for snooping native AUX traffic between source and sink |
| HPDIN/RSVD9 (pin 32), DPEN/HPDIN (pin 23) | Hot-plug detect & enable control | Failsafe inputs with 2 ms debounce; DPEN enables/disables DP functionality in GPIO mode |
| I2C_EN (pin 17), TEST1/SCL (21), TEST2/SDA (22) | I2C programming interface | Selects I2C mode (1, R, F) or GPIO mode (0); SCL/SDA operate at 1 MHz FM+ or 400 kHz FM |
| DPEQ0/A1 (14), DPEQ1 (2), A0 (11) | 4-level configuration inputs | Resistor-divider-based pins enabling 16 EQ settings and I2C address selection (see Table 4) |
| SNOOPENZ/RSVD8 (pin 29) | AUX snoop control | In GPIO mode: L = AUX snooping enabled; H = disabled with all lanes active |
Key Features
| Feature | Design Value |
|---|---|
| DisplayPort 1.4 HBR3 redriving | Supports full 4-lane 8.1 Gbps operation with transparent link training - no retraining overhead or latency penalty |
| Lane-aware AUX snooping | Monitors DPCD writes to LANE_COUNT_SET (0x00101) and SET_POWER_STATE (0x00600) to dynamically enable/disable lanes |
| Ultra-low-power architecture | 660 mW active power at full 4-lane HBR3; 0.85 mW shutdown - critical for thermally constrained mobile docks and thin clients |
| Flexible configuration interface | GPIO mode (I2C_EN = 0) for simple hardware setup; I2C mode (I2C_EN ≠ 0) for per-lane EQ tuning and register-level control |
| Industrial-grade thermal design | RθJB = 9.5 °C/W and RθJC(bot) = 2.3 °C/W - optimized for PCB heat dissipation via exposed thermal pad |
Applications
| Active DisplayPort Cables | Notebook Docking Stations |
|---|---|
Use Scenario: Extending DisplayPort connectivity beyond 2 meters using passive copper cabling with >15 dB insertion loss at 4.05 GHz. IC Role / Device Role / Timing Role: Linear redriver placed mid-cable to recover degraded DP signals and retransmit clean HBR3 waveforms with minimal added jitter. Use Value: Enables certified 4K@60Hz over 3-meter passive cables by compensating for frequency-dependent attenuation without altering link training behavior. |
Use Scenario: Integrating multi-display support (dual 4K or triple QHD) into compact USB-C docking hubs with limited board space and thermal headroom. IC Role / Device Role / Timing Role: Redriver positioned between host GPU and external DP ports to restore signal margin lost across dense routing and multiplexer switching. Use Value: Maintains DisplayPort 1.4 compliance across all output ports while reducing EMI sensitivity through controlled 1500 mVPP output swing and matched 75–120 Ω impedance. |
| Thin Client Graphics Adapters | Embedded DisplayPort Source Modules |
Use Scenario: Adding DisplayPort output to fanless x86 or ARM-based thin clients where GPU signal integrity degrades over internal flex PCB traces. IC Role / Device Role / Timing Role: Redriver placed adjacent to GPU's DP PHY to boost signal before entering long, lossy interconnects to rear-panel connectors. Use Value: Eliminates need for costly high-speed PCB stackups or expensive low-loss laminates - achieves HBR3 eye opening with standard FR-4. |
Use Scenario: Designing modular DP source cards for industrial vision systems requiring hot-plug detection, lane scaling, and AUX-based DPCD handshaking. IC Role / Device Role / Timing Role: Redriver with integrated HPDIN/DPEN logic and AUX snooping to autonomously manage lane count and power state based on sink capabilities. Use Value: Reduces firmware complexity by offloading DPCD register parsing and lane arbitration - simplifies driver development for embedded Linux platforms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DisplayPort redriver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TDP158RNQT | Supports DP 1.4a with DSC, higher 16.2 Gbps HBR3+ mode, and integrated MSA-compliant retimer logic - not linear redriver | Required for Display Stream Compression (DSC) or longer-reach retiming; adds protocol awareness and clock recovery | Choose TDP158RNQT when DSC decompression or full retimer functionality (clock data recovery) is needed - not a drop-in replacement |
| Diodes AP142AQF-13 | Pin-compatible WQFN-40 redriver with identical 8.1 Gbps HBR3 support, but lacks AUX snooping and uses fixed 12 dB EQ | Lower BOM cost where dynamic lane management and DPCD-aware power control are unnecessary | Choose AP142AQF-13 for cost-sensitive applications without AUX snooping requirements - same footprint, simpler configuration |
Compared with TDP142RNQR, TDP158RNQT adds retimer intelligence and DSC support at higher complexity and cost, while AP142AQF-13 offers basic redriving with fixed EQ and no AUX awareness - TDP142RNQR uniquely balances programmability, lane autonomy, and thermal efficiency for mid-tier DP extension.
Availability
TDP142RNQR is available at Aetrix Electronics and suitable for notebook docking stations, active DisplayPort cables, and embedded graphics adapters requiring stable component supply, consistent thermal performance, and long-term lifecycle availability.
Supply support for TDP142RNQR 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 specializing in analog, embedded processing, and connectivity technologies with over 50 years of leadership in high-speed interface solutions.
The TDP142RNQR belongs to TI's DisplayPort redriver product line, engineered specifically to solve signal integrity challenges in compact, thermally constrained DP 1.4 systems - emphasizing transparency, low power, and intelligent lane management.
FAQ
What is the operating temperature range for TDP142RNQR?
The TDP142RNQR is specified for commercial temperature operation from 0°C to 70°C, as confirmed by TI's official orderable part numbering and device marking - distinct from the industrial-grade TDP142IRNQR (-40°C to 85°C). This range aligns with typical notebook, docking station, and active cable ambient conditions.
Does TDP142RNQR support DisplayPort dual-mode (DP++), and how is it implemented?
Yes, TDP142RNQR supports DisplayPort dual-mode (DP++) per VESA specification version 1.1, enabling AC-coupled HDMI conversion. It achieves this by preserving TMDS timing and voltage levels on the redriven lanes while remaining transparent to the source's DP++ handshake - no additional level-shifting circuitry is required.
How does AUX snooping work in TDP142RNQR, and which DPCD registers does it monitor?
TDP142RNQR snoops native AUX writes to two specific DPCD registers: 0x00101 (LANE_COUNT_SET) to determine active lane count, and 0x00600 (SET_POWER_STATE) to detect D3 power-down states. When SET_POWER_STATE = D3, all lanes disable; otherwise, lane activation follows LANE_COUNT_SET - all without interrupting link training.
Can TDP142RNQR be configured using only GPIOs, and what are the key control pins?
Yes, TDP142RNQR supports full GPIO-mode configuration when I2C_EN = 0. Key pins include DPEQ1/DPEQ0 (for 16-step equalization), DPEN (to enable/disable DP functionality), and SNOOPENZ (to enable/disable AUX snooping). All use 4-level logic (0/R/F/1) with internal pull-up/down resistors for robust voltage thresholding.
What is the maximum differential output voltage swing supported by TDP142RNQR?
TDP142RNQR delivers a typical differential output voltage swing of 1500 mVPP at the package pins under HBR3 conditions, meeting VESA DP 1.4 transmitter compliance requirements. This high-swing capability ensures sufficient margin after connector and cable losses while maintaining <0.135 UIpp total jitter at 8.1 Gbps.
TDP142RNQR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- DisplayPort™
- Package/Case:
- 40-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Personal Computers, CAD/CAM/CAE Workstation, Point-of-Sale Terminals, Audio/Visual Devices, Limited Space Areas
- Interface:
- HDMI
- Voltage - Supply:
- 3V ~ 3.6V
- Supplier Device Package:
- 40-WQFN (6x4)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
TDP142RNQR FAQ
1.How can I place an order for TDP142RNQR through Aetrix?
Please submit a Request for Quotation (RFQ) for TDP142RNQR 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 TDP142RNQR reliable?
The price and inventory of TDP142RNQR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDP142RNQR is usually 5 days.
3.What payment methods are accepted for TDP142RNQR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDP142RNQR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TDP142RNQR?
TDP142RNQR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDP142RNQR 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 TDP142RNQR?
For technical support, including TDP142RNQR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDP142RNQR requirements.
6.How does Aetrix verify that TDP142RNQR is sourced from the original manufacturer or authorized distributors?
All TDP142RNQR 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 TDP142RNQR meets industry standards.
7.What is the process for return or replacement of TDP142RNQR?
All TDP142RNQR units undergo pre-shipment inspection (PSI). If there is an issue with TDP142RNQR, 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 TDP142RNQR part is unused and in its original packaging.
Return procedure for TDP142RNQR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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