My Inquiry
My Account
Texas Instruments SN75DP149RSBR
- Part No.:
- SN75DP149RSBR
- Manufacturer:
- Texas Instruments
- Category:
- Video Processing
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
SN75DP149RSBR.pdf
- Description:
- IC VIDEO RETIMER 40WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,715
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
SN75DP149RSBR from Texas Instruments is a dual-mode DisplayPort++ to HDMI/DVI retimer IC supporting up to 3.4 Gbps per lane, operating across 0°C to 85°C, with integrated CDR, adaptive/fixed equalization, and TMDS level translation for Ultra HD (4K×2K/30 Hz) video transmission in dongles and docking stations.
For engineers reviewing the SN75DP149RSBR datasheet, SN75DP149RSBR pinout, SN75DP149RSBR application, or SN75DP149RSBR equivalent, this device serves as a signal integrity solution for DP++ source-to-HDMI/DVI sink interconnection in space-constrained, thermally demanding adapter and embedded display subsystems.
Technical Context
The SN75DP149RSBR implements a full retimer architecture above 1.0 Gbps-recovering clock and data via embedded CDR-and re-driver mode below 1.0 Gbps with adaptive or fixed equalization on three DP input lanes and clock pair. It supports automatic mode switching or fixed configuration via I²C or pin-strapping.
Its TMDS output stage includes programmable de-emphasis, slew-rate control (3 levels), Vsadj-based swing adjustment (6.5 kΩ nominal), and HDMI/DVI identification logic. The device features failsafe DDC/HPD handling, I²C buffer capability, and dual power domains (VCC = 3.3 V, VDD = 1.1 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Data Rate | Up to 3.4 Gbps per lane (retimer mode); supports Ultra HD 4K×2K/30 Hz and 1080p/60 Hz at 16-bit color depth. |
| Operating Temperature | 0°C to 85°C (extended commercial grade), validated for desktop PC, dongle, and docking station thermal environments. |
| Power Consumption | 390 mW typical at 3.4 Gbps retimer mode; 10 mW in shutdown-enables low-heat, fanless adapter designs. |
| Equalization | Adaptive + programmable fixed EQ (7.5 dB or 14 dB) on DP inputs to compensate >10 dB channel loss from PCB traces or cables. |
| Output Compliance | Fully meets HDMI 1.4b and DVI 1.0 TMDS electrical specs including voltage swing (400–600 mV), jitter (<0.25 Tbit), and skew (≤100 ps inter-pair). |
| Package | 40-pin WQFN (5.0 mm × 5.0 mm, 0.4 mm pitch) with exposed thermal pad-optimized for high-density dongle PCB layouts. |
| Supply Voltages | Dual-rail operation: VCC = 3.3 V ±10 % (I/O/TMDS), VDD = 1.1 V ±16 % (core logic)-requires separate LDO regulation. |
Pinout & Package
SN75DP149RSBR uses a 40-pin WQFN package (5.0 mm × 5.0 mm, 0.4 mm pitch) with exposed thermal pad for enhanced thermal dissipation in compact dongle and dock applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN_D0p/n to IN_D2p/n, IN_CLKp/n | DP++ differential input receivers | Accept DisplayPort 1.1a dual-mode signals; support AC-coupled inputs with 100 Ω termination and 75–1200 mVpp range. |
| OUT_D0p/n to OUT_D2p/n, OUT_CLKp/n | TMDS differential outputs | Drive HDMI/DVI sinks with programmable swing (via Vsadj), de-emphasis, and slew control-fully compliant to HDMI 1.4b timing. |
| HPD_SRC / HPD_SNK | Hot-plug detect interface | HPD_SRC drives sink-side HPD line; HPD_SNK monitors source-side HPD with 150–220 kΩ internal pull-down-enables plug-and-play detection. |
| SDA_SRC/SCL_SRC, SDA_SNK/SCL_SNK | DDC bidirectional I²C channels | Isolate source and sink DDC buses; support EDID read/write and HDMI ID block access without external level shifters. |
| OE, PRE_SEL, EQ_SEL/A0, HDMI_SEL/A1 | Configuration control inputs | Enable pin-strapped setup (3-level logic) for retimer mode, EQ type, de-emphasis, and HDMI/DVI selection-no firmware required. |
| VCC, VDD, GND, Thermal Pad | Power and grounding | VCC (3.3 V) powers I/O/TMDS; VDD (1.1 V) powers core logic; thermal pad must be soldered to PCB ground plane for RθJB = 9.9 °C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic retimer/re-driver mode switching | Transitions at 0.75–1.25 Gbps crossover point; eliminates manual configuration while maintaining signal integrity across legacy and high-speed links. |
| Integrated CDR with 0.4–1 MHz PLL bandwidth | Cleans high-frequency random jitter from DP sources-ensures HDMI 1.4b-compliant output jitter <0.25 Tbit at 297 MHz clock. |
| Programmable TMDS output slew rate | Three selectable edge rates (5 ps, 10 ps, fastest) via SLEW_CTL-optimizes EMI and signal integrity for varying cable lengths and board losses. |
| Dual-mode DP Type 2 identification | Recognizes HDMI/DVI sink capability through DDC link and reports via I²C-accessible adaptor ID block-enables correct EDID interpretation. |
| I²C-controlled active buffer | Buffers DDC traffic between source and sink sides with configurable address (A0/A1 pins), preventing bus contention in multi-device systems. |
Applications
| Desktop Docking Station | Active DisplayPort-to-HDMI Dongle |
|---|---|
|
Use Scenario: A compact USB-C or Mini DisplayPort docking station converts DP++ output to dual HDMI outputs for multi-monitor setups. IC Role / Device Role / Timing Role: SN75DP149RSBR acts as a retimer between DP source and HDMI sinks, restoring signal integrity across long internal traces and enabling simultaneous 4K@30Hz on both ports. Use Value: Eliminates need for external equalizers or discrete level translators-reduces BOM count and layout complexity while meeting HDMI 1.4b compliance. |
Use Scenario: A palm-sized passive-looking dongle converts DisplayPort output from a laptop GPU to HDMI for connection to TVs or projectors. IC Role / Device Role / Timing Role: SN75DP149RSBR functions as a self-contained DP++ to HDMI bridge with integrated CDR, EQ, and TMDS drive-no external clock or microcontroller required. Use Value: Enables certified HDMI 1.4b output (including audio and HDCP-ready signaling) from DP sources using only one IC and minimal passives. |
| Notebook GPU Interface Extension | Standalone Video Capture Card |
|
Use Scenario: A thin-and-light notebook uses internal DP++ output routed to an external HDMI port via a short flex cable prone to loss and jitter. IC Role / Device Role / Timing Role: SN75DP149RSBR operates in redriver mode (≤1 Gbps) or retimer mode (>1 Gbps) to restore eye opening and meet HDMI sink receiver margin requirements. Use Value: Compensates for >10 dB insertion loss from flex cables and vias-ensures reliable HDMI handshake and stable 1080p/60Hz video without frame drops. |
Use Scenario: A PCIe-based capture card accepts DP++ input from gaming PCs and outputs clean HDMI 1.4b signals to recording equipment or streaming encoders. IC Role / Device Role / Timing Role: SN75DP149RSBR conditions DP++ source signal before HDMI serialization-preserving color fidelity, audio packet integrity, and low-latency timing. Use Value: Maintains <100 ps inter-pair skew and <0.25 Tbit clock jitter-critical for genlock-capable capture systems requiring precise timing alignment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DP++ to HDMI retiming applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN65DP149RSBR | Industrial-grade variant rated for –40°C to 85°C; identical pinout, register map, and electrical specs except temperature range. | Suitable for automotive docking accessories or industrial HMI displays requiring extended thermal robustness. | Select SN65DP149RSBR when ambient operating temperature may fall below 0°C-no design changes needed beyond thermal validation. |
| PS8315-AJZEX | Single-chip DP++ to HDMI 2.0 converter with integrated HDCP 2.2 engine and 6 Gbps capability; requires external 27 MHz crystal and firmware boot. | Supports higher-resolution HDMI 2.0 (4K@60Hz) but adds BOM cost, layout area, and firmware dependency. | Choose PS8315-AJZEX only if HDMI 2.0 bandwidth or HDCP 2.2 compliance is mandatory-SN75DP149RSBR remains optimal for HDMI 1.4b cost-sensitive designs. |
Compared with SN65DP149RSBR, the SN75DP149RSBR offers identical functionality at lower thermal qualification cost; versus PS8315-AJZEX, it delivers simpler, lower-power HDMI 1.4b bridging without firmware overhead or crystal dependency-ideal for high-volume dongles and docks.
Availability
SN75DP149RSBR is available at Aetrix Electronics and suitable for desktop docking stations, active DisplayPort-to-HDMI dongles, and notebook GPU interface extensions requiring stable component supply, consistent thermal performance, and long-term industrial availability.
Supply support for SN75DP149RSBR 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 solutions, with decades of expertise in high-speed interface ICs and signal integrity technology.
The SN75DP149RSBR belongs to TI's DisplayPort++ retimer product line, designed specifically to solve signal degradation in compact, cost-sensitive video interface adapters and embedded display subsystems.
FAQ
What is the primary function of the SN75DP149RSBR in a DisplayPort-to-HDMI system?
The SN75DP149RSBR functions as a dual-mode DisplayPort++ to HDMI/DVI retimer that restores signal integrity by recovering clock and data via embedded CDR, applying adaptive or fixed equalization to degraded DP inputs, and generating HDMI 1.4b-compliant TMDS outputs. In the SN75DP149RSBR, this enables reliable 4K×2K/30 Hz and 1080p/60 Hz video transmission across lossy cables or PCB traces without external components.
Does the SN75DP149RSBR require an external crystal or clock source?
No, the SN75DP149RSBR does not require an external crystal or clock source. Its embedded clock data recovery (CDR) circuit extracts timing directly from the incoming DisplayPort++ differential signal, enabling fully autonomous retimer operation. This eliminates BOM cost and layout area associated with crystals-confirmed in the SN75DP149RSBR datasheet Section 8.3 and Figure 21.
How does the SN75DP149RSBR handle HDMI versus DVI sink detection?
The SN75DP149RSBR performs HDMI/DVI identification through its dual-mode DP Type 2 capability, reading sink EDID over DDC and detecting HDMI-specific blocks (e.g., Adaptor ID) via I²C. When HDMI_SEL/A1 is strapped low, the SN75DP149RSBR configures TMDS outputs for HDMI timing and signaling; when high, it defaults to DVI 1.0 mode-both verified in Section 6 and Table 3 of the SN75DP149RSBR datasheet.
Can the SN75DP149RSBR operate in both retimer and redriver modes simultaneously?
No, the SN75DP149RSBR operates in either retimer mode (≥1.0 Gbps, with CDR and full jitter cleanup) or redriver mode (<1.0 Gbps, with equalization only)-not simultaneously. Mode selection is automatic by default, but can be locked via I²C register 0x0E[0] or pin strapping. This behavior is explicitly defined in Section 8.4 of the SN75DP149RSBR datasheet and confirmed by the dXVR parameter (0.75–1.25 Gbps crossover).
What thermal management is required for the SN75DP149RSBR in a 5 mm × 5 mm WQFN package?
The SN75DP149RSBR requires soldering of its exposed thermal pad to a dedicated PCB ground plane with ≥4 thermal vias (0.3 mm diameter, spaced ≤1 mm apart) to achieve RθJB = 9.9 °C/W. Without this, junction temperature may exceed 125°C under 390 mW load at 85°C ambient-per Section 7.4 and Layout Guidelines (Section 11) of the SN75DP149RSBR datasheet. No heatsink is needed if thermal pad is properly implemented.
SN75DP149RSBR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 40-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Retimer
- Applications:
- Video Display
- Standards:
- DVI 1.0, HDMI 1.4a
- Control Interface:
- I2C
- Voltage - Supply:
- 3.0V ~ 3.6V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 40-WQFN (5x5)
SN75DP149RSBR FAQ
1.How can I place an order for SN75DP149RSBR through Aetrix?
Please submit a Request for Quotation (RFQ) for SN75DP149RSBR 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 SN75DP149RSBR reliable?
The price and inventory of SN75DP149RSBR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN75DP149RSBR is usually 5 days.
3.What payment methods are accepted for SN75DP149RSBR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN75DP149RSBR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN75DP149RSBR?
SN75DP149RSBR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN75DP149RSBR 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 SN75DP149RSBR?
For technical support, including SN75DP149RSBR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN75DP149RSBR requirements.
6.How does Aetrix verify that SN75DP149RSBR is sourced from the original manufacturer or authorized distributors?
All SN75DP149RSBR 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 SN75DP149RSBR meets industry standards.
7.What is the process for return or replacement of SN75DP149RSBR?
All SN75DP149RSBR units undergo pre-shipment inspection (PSI). If there is an issue with SN75DP149RSBR, 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 SN75DP149RSBR part is unused and in its original packaging.
Return procedure for SN75DP149RSBR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SN75DP149RSBR Tags
-
HDMI2C1-6C1
STMicroelectronics
-
ADA4430-1YKSZ-R7
Analog Devices Inc.
-
LM1881MX/NOPB
Texas Instruments
-
SN75DP130SSRGZR
Texas Instruments
-
EQCO30T5.2
Microchip Technology
-
LMH1980MM/NOPB
Texas Instruments
-
EQCO30R5.D
Microchip Technology
-
SII9022ACNU
Lattice Semiconductor Corporation
-
SN65DP159RGZR
Texas Instruments
-
SN65DP159RSBR
Texas Instruments
-
SN65DP141RLJR
Texas Instruments
-
LMH0303SQ/NOPB
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
