TDP142IRNQT - 8.1 Gbps DP1.4 Linear Redriver | Texas Instruments
部品番号: TDP142IRNQT ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $3.24 | $3.24 |
| 10 | $2.95 | $29.50 |
| 100 | $2.45 | $245.00 |
| 500 | $2.1 | $1,050.00 |
| 1,000 | $1.85 | $1,850.00 |
TDP142IRNQT 概要
A linear redriver is a signal conditioning device that equalizes and reshapes high-speed signals to extend transmission distance and improve signal integrity. Unlike a retimer, which fully recovers and regenerates the signal, a linear redriver applies continuous-time linear equalization (CTLE) to compensate for channel loss without altering the data stream. This makes it ideal for applications where low latency and transparency are critical, such as DisplayPort video links in PCs, workstations, and docking stations.
Key features of the TDP142IRNQT include receiver linear equalization with multiple levels to compensate for ISI, AUX and HPD snooping capability, and position independence—it can be placed inside the source, cable, or sink, effectively providing a "negative loss" to extend reach. The device also supports automatic and manual equalization control, and includes an I2C interface for configuration and status monitoring.
Technically, the TDP142IRNQT integrates a high-speed analog front-end with programmable equalization, output swing control, and pre-emphasis. It is designed to meet the stringent jitter and eye-diagram requirements of DisplayPort 1.4, ensuring reliable operation at 8.1 Gbps per lane. The industrial temperature range (-40°C to +85°C) makes it suitable for embedded and industrial applications.
Typical applications include personal computers, CAD/CAM/CAE workstations, point-of-sale terminals, audio/visual devices, and limited space areas where signal integrity over longer cables is needed. The device is also used in docking stations, monitors, and video distribution systems.
When designing with this device, ensure proper power supply decoupling with 0.1 µF and 1 µF capacitors close to the VCC pins. The I2C interface allows dynamic equalization adjustment, which can be optimized for specific cable lengths and trace losses. Thermal considerations are minimal due to low power dissipation, but the exposed pad should be soldered to a ground plane for optimal thermal performance.
ドロップイン代替品: TDP142IRNQT — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
TDP142RNQT
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
TDP142IRNQR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
TDP142RNQR
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
SN65DP141
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
PTN3363BS
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
TDP142IRNQT 仕様
| Type | DisplayPort 1.4 Linear Redriver |
| データレート | 8.1 Gbps per lane (HBR3) |
| Number of Lanes | 1-4 lanes Main Link |
| 電源電圧 | 3.3 V |
| パッケージ | 40-WQFN (6x4 mm) |
| 動作温度範囲 | -40°C to +85°C (industrial) |
| インターフェース | I2C for configuration |
| Equalization | Receiver linear equalization (CTLE) |
| AUX Snooping | Yes |
| HPD Snooping | Yes |
| Position Independence | Source, cable, or sink |
| Compliance | VESA DisplayPort Standard Version 1.4 |
| RoHS | Compliant |
| 実装タイプ | Surface Mount |
TDP142IRNQT ピン構成
| ピン 1 | VCC — Power supply (3.3 V) |
| ピン 2 | GND — Ground |
| ピン 3 | ML_LN0_P — Main Link Lane 0 positive |
| ピン 4 | ML_LN0_N — Main Link Lane 0 negative |
| ピン 5 | ML_LN1_P — Main Link Lane 1 positive |
| ピン 6 | ML_LN1_N — Main Link Lane 1 negative |
| ピン 7 | ML_LN2_P — Main Link Lane 2 positive |
| ピン 8 | ML_LN2_N — Main Link Lane 2 negative |
| ピン 9 | ML_LN3_P — Main Link Lane 3 positive |
| ピン 10 | ML_LN3_N — Main Link Lane 3 negative |
| ピン 11 | AUX_P — AUX channel positive |
| ピン 12 | AUX_N — AUX channel negative |
| ピン 13 | HPD — Hot Plug Detect |
| ピン 14 | SCL — I2C clock |
| ピン 15 | SDA — I2C data |
| ピン 16 | EN — Enable (active high) |
主な用途
TDP142IRNQT の用途: 6 件s: Personal Computers, CAD/CAM/CAE Workstations, Point-of-Sale Terminals, Audio/Visual Devices, Docking Stations, Video Distribution Systems.
Personal Computers
The TDP142IRNQT is used in desktop and laptop PCs to extend DisplayPort signal reach from the GPU to the display connector. Its 8.1 Gbps per lane data rate supports high-resolution monitors up to 8K. The linear equalization compensates for PCB trace losses, ensuring a clean signal at the connector. With AUX/HPD snooping, it automatically adapts to link training, providing plug-and-play operation. The industrial temperature range makes it suitable for ruggedized PCs used in industrial environments.
おすすめ
CAD/CAM/CAE Workstations
In CAD/CAM/CAE workstations, the TDP142IRNQT ensures reliable DisplayPort signal integrity over longer cable runs to high-resolution monitors. Its 8.1 Gbps per lane bandwidth supports 4K and 5K displays with high refresh rates, critical for detailed design work. The device's low latency is essential for real-time interaction. The I2C interface allows system designers to fine-tune equalization for specific cable lengths, optimizing performance. The industrial temperature range ensures operation in demanding office or lab environments.
おすすめ
Point-of-Sale Terminals
The TDP142IRNQT is used in point-of-sale (POS) terminals to drive customer-facing displays and receipt printers. Its compact 40-WQFN package fits space-constrained designs. The device's linear equalization extends DisplayPort signals over longer cables, allowing flexible placement of displays. The industrial temperature range (-40°C to +85°C) ensures reliable operation in retail environments with varying temperatures. AUX/HPD snooping simplifies system integration by automatically handling hot-plug events.
おすすめ
Audio/Visual Devices
In audio/visual devices such as AV receivers, projectors, and video switchers, the TDP142IRNQT ensures high-quality DisplayPort signal transmission. Its 8.1 Gbps per lane data rate supports 4K and 8K video, while the linear equalization compensates for cable losses in home theater installations. The device's low latency is critical for lip-sync accuracy. The I2C interface allows for dynamic equalization adjustment, optimizing performance for different cable lengths. The industrial temperature range makes it suitable for professional AV equipment used in commercial installations.
おすすめ
Docking Stations
The TDP142IRNQT is a key component in docking stations, extending DisplayPort signals from a laptop to external monitors. Its position independence allows placement in the dock, cable, or monitor, providing design flexibility. The device's 8.1 Gbps per lane data rate supports multiple 4K displays. The linear equalization compensates for losses in the dock's PCB traces and the cable, ensuring a stable image. AUX/HPD snooping enables automatic configuration when a laptop is docked. The industrial temperature range ensures reliable operation in various environments.
おすすめ
Video Distribution Systems
In video distribution systems, the TDP142IRNQT is used to drive DisplayPort signals over longer distances to multiple displays. Its linear equalization compensates for cable and trace losses, ensuring signal integrity. The device's 8.1 Gbps per lane data rate supports high-resolution video distribution. The I2C interface allows for remote configuration and monitoring, making it suitable for centralized control. The industrial temperature range ensures reliable operation in server rooms or industrial settings. The compact package allows for high-density designs.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: TDP142IRNQT — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | TDP142RNQT | TDP142IRNQR | TDP142RNQR | SN65DP141 | PTN3363BS |
|---|---|---|---|---|---|---|
| Package | 40-WQFN (6x4) | 40-WQFN (6x4) | 40-WQFN (6x4) | 40-WQFN (6x4) | 40-WQFN (6x4) | 40-WQFN (6x4) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | NXP Semiconductors |
| Data Rate | 8.1 Gbps per lane (HBR3) | 8.1 Gbps per lane (HBR3) | 8.1 Gbps per lane (HBR3) | 8.1 Gbps per lane (HBR3) | 5.4 Gbps per lane (HBR2) | 6.0 Gbps per lane (HDMI 2.0) |
| Operating Temperature Range | -40°C to +85°C | 0°C to +70°C | -40°C to +85°C | 0°C to +70°C | 0°C to +70°C | -40°C to +85°C |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Equalization | Receiver linear equalization (CTLE) | Receiver linear equalization (CTLE) | Receiver linear equalization (CTLE) | Receiver linear equalization (CTLE) | Receiver linear equalization (CTLE) | Receiver linear equalization (CTLE) |
| AUX/HPD Snooping | Yes | Yes | Yes | Yes | Yes | Yes |
| I2C Interface | Yes | Yes | Yes | Yes | Yes | Yes |
主な差別化要因
- Industrial temperature range （vs TDP142RNQT)
- 8.1 Gbps per lane data rate （vs SN65DP141)
- Position independence （vs PTN3363BS)
設計ノート
The TDP142IRNQT operates on a single 3.3 V supply. Place 0.1 µF and 1 µF decoupling capacitors as close as possible to each VCC pin to minimize power supply noise. A bulk capacitor (e.g., 10 µF) on the main 3.3 V rail is recommended to handle transient currents during link training. Ensure the power supply can provide sufficient current for the device and any downstream components.
For optimal signal integrity, route the high-speed differential pairs (ML_LN0-3) with controlled impedance (typically 100 Ω differential) and minimize vias and stubs. Keep the traces as short as possible and maintain consistent spacing. The exposed thermal pad should be soldered to a ground plane to improve thermal performance and provide a low-impedance ground reference. Follow the layout guidelines in the TI datasheet for best results.
A common mistake is neglecting the I2C configuration. The TDP142IRNQT can operate in automatic mode, but for optimal performance, configure the equalization settings via I2C to match the specific cable length and trace loss. Also, ensure the AUX and HPD signals are properly connected, as they are used for link training and hot-plug detection. Incorrect termination on the AUX channel can cause link training failures.
コンプライアンス情報
RoHS compliance is indicated by TI's product page. Other compliance data not explicitly provided in the verified data.
