TDP142IRNQT - 8.1 Gbps DP1.4 Linear Redriver | Texas Instruments
N.º da peça: TDP142IRNQT ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 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 Visão geral
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.
Alternativas drop-in para TDP142IRNQT — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
TDP142RNQT
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
TDP142IRNQR
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
TDP142RNQR
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
SN65DP141
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
PTN3363BS
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
TDP142IRNQT Especificações
| Type | DisplayPort 1.4 Linear Redriver |
| Taxa de dados | 8.1 Gbps per lane (HBR3) |
| Number of Lanes | 1-4 lanes Main Link |
| Tensão de alimentação | 3.3 V |
| Encapsulamento | 40-WQFN (6x4 mm) |
| Faixa de temperatura de operação | -40°C to +85°C (industrial) |
| Interface | 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 |
| Tipo de montagem | Surface Mount |
Configuração de pinos do TDP142IRNQT
| Pino 1 | VCC — Power supply (3.3 V) |
| Pino 2 | GND — Ground |
| Pino 3 | ML_LN0_P — Main Link Lane 0 positive |
| Pino 4 | ML_LN0_N — Main Link Lane 0 negative |
| Pino 5 | ML_LN1_P — Main Link Lane 1 positive |
| Pino 6 | ML_LN1_N — Main Link Lane 1 negative |
| Pino 7 | ML_LN2_P — Main Link Lane 2 positive |
| Pino 8 | ML_LN2_N — Main Link Lane 2 negative |
| Pino 9 | ML_LN3_P — Main Link Lane 3 positive |
| Pino 10 | ML_LN3_N — Main Link Lane 3 negative |
| Pino 11 | AUX_P — AUX channel positive |
| Pino 12 | AUX_N — AUX channel negative |
| Pino 13 | HPD — Hot Plug Detect |
| Pino 14 | SCL — I2C clock |
| Pino 15 | SDA — I2C data |
| Pino 16 | EN — Enable (active high) |
Aplicações típicas
TDP142IRNQT é adequado para 6 aplicaçãos: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para TDP142IRNQT — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | 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 |
Principais diferenciais
- Industrial temperature range (vs TDP142RNQT)
- 8.1 Gbps per lane data rate (vs SN65DP141)
- Position independence (vs PTN3363BS)
Notas de projeto
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.
Informações de conformidade
RoHS compliance is indicated by TI's product page. Other compliance data not explicitly provided in the verified data.
