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NXP Semiconductors TDA9981BHL/8/C1,51
- Part No.:
- TDA9981BHL/8/C1,51
- Manufacturer:
- NXP Semiconductors
- Category:
- Video Processing
- Package:
- 80-LQFP
- Datasheet:
-
TDA9981BHL/8/C1,51.pdf
- Description:
- IC VIDEO TRANSMITTER 80LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,297
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Product details
Overview
TDA9981BHL/8/C1,51 from NXP Semiconductors is an HDMI 1.2a-compliant transmitter supporting DVI compatibility, 3 × 8-bit RGB/YCbCr video input (up to 81 MHz pixel clock), four I²S audio streams (up to 192 kHz sampling rate), and S/PDIF input - deployed in set-top boxes and AV receivers for digital video interface bridging.
For engineers reviewing the TDA9981BHL/8/C1,51 datasheet, TDA9981BHL/8/C1,51 pinout, TDA9981BHL/8/C1,51 application, or TDA9981BHL/8/C1,51 equivalent, key selection criteria include HDMI serializer operation range (250 MHz–1.5 GHz), dual-supply operation (1.8 V core / 3.3 V I/O), programmable color space conversion (RGB ↔ YCbCr), and support for ITU-R BT.656-like embedded sync with double-edge sampling.
Technical Context
The TDA9981BHL/8/C1,51 integrates a dual-PLL architecture: one PLL doubles the VCLK input for video capture timing, while the serializer PLL generates HDMI link clocks at ≥10× audio sample rate. It supports three independent 8-bit video ports (VPA/VBP/VPC) with configurable bus inversion and edge-triggered latching (rising/falling/both).
Its input formatter accepts RGB 4:4:4, YCbCr 4:4:4, YCbCr 4:2:2 semi-planar (up to 2×12-bit), and ITU656-like formats (up to 1×12-bit). The color space converter is fully programmable via I²C and can be bypassed; upsampling from 4:2:2 to 4:4:4 is supported via linear interpolation or pixel repetition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Pixel Clock | 81 MHz - defines maximum supported resolution (e.g., 720p60 with embedded sync) |
| Video Input Bus | 3 × 8-bit CMOS/LV-TTL - enables direct connection to MPEG decoder outputs without level-shifting |
| Audio Interfaces | 4× I²S + 1× S/PDIF - supports up to 8-channel uncompressed PCM or compressed Dolby Digital/DTS bitstreams |
| HDMI Output Range | 250 MHz to 1.50 GHz - covers TMDS clock rates for all HDMI 1.2a video formats including deep color |
| Supply Voltages | VDDC = 1.65–1.95 V (1.8 V nominal); VDDA/VDDD/VDDH = 3.0–3.6 V (3.3 V nominal) - requires dual-rail power design |
| Power Dissipation | 235 mW typical, 288 mW max - enables thermal management in compact consumer enclosures |
| Power-down Mode | 14–19 mW - reduces standby power in always-on AV equipment during HDMI sink disconnection |
Pinout & Package
LQFP80 package (SOT315-1), 12 × 12 × 1.4 mm body, 80 leads - compatible with standard surface-mount reflow profiles and automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VPA[7:0]–VPB[7:0]–VPC[7:0] | Three 8-bit video input ports | Configurable as RGB (R/G/B), YCbCr (Y/Cb/Cr), or ITU656-like multiplexed data - supports format remapping via register control |
| TX0+/TX0−, TX1+/TX1−, TX2+/TX2−, TXC+/TXC− | HDMI TMDS differential output channels | Direct connection to HDMI connector; requires 100 Ω differential impedance routing and ESD protection |
| I2C_SCL / I2C_SDA | I²C-bus slave interface | 5 V tolerant, open-drain - enables configuration and status monitoring from 3.3 V or 5 V microcontrollers |
| HPD / INT / RST_N | Hot-plug detect, interrupt, hard reset | HPD is 5 V tolerant input; INT is open-drain interrupt output; RST_N is active-low asynchronous reset |
| VDDC(1V8), VDDD(3V3), VDDH(3V3), VDDA(FRO_3V3), VDDA(PLL_3V3) | Five independent supply rails | Enables domain-specific power gating; decoupling required per rail per datasheet layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Programmable input formatter | Supports RGB, YCbCr 4:4:4, YCbCr 4:2:2 semi-planar, and ITU656-like formats with selectable edge sampling - eliminates need for external video preprocessing logic |
| Color space converter | Fully programmable RGB ↔ YCbCr conversion with bypass mode - enables source-agnostic video path in multi-format systems |
| Dual-PLL clock generation | Separate PLLs for video capture (VCLK doubling) and HDMI serialization - ensures jitter-free TMDS clocking independent of source clock stability |
| S/PDIF clock recovery | Internal S/PDIF receiver recovers bit clock without external MCLK - simplifies audio subsystem design and reduces component count |
| Interrupt-driven HPD handling | INT pin asserts on hot-plug detect and RxSense events - enables responsive sink state management in resource-constrained microcontrollers |
Applications
| Set-Top Box (STB) | AV Receiver |
|---|---|
|
Use Scenario: Transmits decoded MPEG-2/4 video and Dolby Digital audio from tuner/demodulator to HDMI display. IC Role / Device Role / Timing Role: HDMI serializer bridge between baseband video/audio processors and HDMI PHY layer. Use Value: Supports 720p60 and 1080i output with embedded sync parsing and S/PDIF passthrough - meets broadcast STB latency and format flexibility requirements. |
Use Scenario: Aggregates video from multiple sources (DVD, satellite, media player) and routes HDMI output with audio embedding. IC Role / Device Role / Timing Role: Format-agnostic HDMI transmitter enabling seamless switching between RGB and YCbCr sources. Use Value: Programmable color space conversion and ITU656-like sync extraction eliminate external video scalers or sync strippers in multi-source A/V hubs. |
| DVD Player | Media Center PC |
|
Use Scenario: Converts DVD player's 480p/576p YCbCr 4:2:2 output to HDMI 1.2a-compliant stream with LPCM or compressed audio. IC Role / Device Role / Timing Role: HDMI transmitter with integrated S/PDIF receiver and I²S audio multiplexer. Use Value: 81 MHz pixel clock and S/PDIF clock recovery enable plug-and-play DVD playback without external audio clock generators. |
Use Scenario: Adds HDMI output capability to graphics add-in boards or notebook docking stations using existing LV-TTL video buses. IC Role / Device Role / Timing Role: Video interface bridge converting parallel RGB/YCbCr from GPU or video encoder to HDMI serial stream. Use Value: LQFP80 package and 3.3 V I/O compatibility simplify integration into space-constrained PC form factors without level translation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar HDMI transmitter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TFP410PAP | Single 8-bit video port; no S/PDIF input; supports only RGB/YCbCr 4:4:4; max pixel clock 165 MHz | Targeted at fixed-format RGB graphics sources (e.g., FPGA video pipelines), not multi-standard consumer video decoders | Select when higher pixel clock (≥1080p60) is required and S/PDIF integration is unnecessary |
| Maxim MAX9516ETL+ | Integrated HDMI receiver + transmitter; no I²S audio inputs; supports only HDMI repeater mode; 1.8 V core only | Designed for HDMI signal regeneration/re-timing, not source-side video/audio encoding | Select for HDMI distribution amplifiers or active cables requiring bidirectional signal conditioning |
Compared with TDA9981BHL/8/C1,51, the TFP410PAP offers higher bandwidth but lacks multi-format video support and S/PDIF, while the MAX9516ETL+ provides repeater functionality but cannot originate HDMI streams from parallel video buses - making TDA9981BHL/8/C1,51 uniquely suited for source-side HDMI encoding in multi-standard consumer AV devices.
Availability
TDA9981BHL/8/C1,51 is available at Aetrix Electronics and suitable for set-top box, AV receiver, and DVD player designs requiring stable component supply, long-term lifecycle support, and guaranteed traceability for consumer electronics manufacturing.
Supply support for TDA9981BHL/8/C1,51 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and consumer applications.
The TDA9981BHL/8/C1,51 belongs to NXP's legacy HDMI transmitter product line, designed specifically for cost-sensitive, high-volume consumer AV equipment requiring flexible video format handling and integrated audio transport.
FAQ
What video input formats does the TDA9981BHL/8/C1,51 support?
The TDA9981BHL/8/C1,51 supports RGB 4:4:4, YCbCr 4:4:4, YCbCr 4:2:2 semi-planar (up to 2×12-bit), and ITU656-like formats (up to 1×12-bit) with both external and embedded synchronization. It accepts pixel clocks up to 81 MHz and allows double-edge sampling on VCLK for ITU656-like streams - confirmed in Table 5 and Section 8.2 of the datasheet.
Does the TDA9981BHL/8/C1,51 support S/PDIF audio input with clock recovery?
Yes, the TDA9981BHL/8/C1,51 supports S/PDIF audio input on AP6 and includes internal clock recovery circuitry that extracts the bit clock from the S/PDIF signal - eliminating the need for an external master clock. This is explicitly documented in Section 8.9 and Table 15 of the datasheet.
What is the function of the EXT_SWING pin on the TDA9981BHL/8/C1,51?
The EXT_SWING pin (Pin 24) sets HDMI output voltage swing by connecting a fixed resistor between EXT_SWING and VDDH(3V3). Its value determines TMDS output amplitude per HDMI specification compliance - detailed in Section 8.14.1 and Table 4 of the TDA9981B datasheet.
Can the TDA9981BHL/8/C1,51 perform RGB to YCbCr color space conversion?
Yes, the TDA9981BHL/8/C1,51 includes a fully programmable color space converter that supports both RGB-to-YCbCr and YCbCr-to-RGB conversion, with coefficients adjustable via I²C registers. The block can also be bypassed entirely - specified in Sections 2, 8.6, and Table 14.
What power supply domains does the TDA9981BHL/8/C1,51 require?
The TDA9981BHL/8/C1,51 requires five independent supplies: VDDC(1V8) for the digital core (1.65–1.95 V), VDDD(3V3) and VDDH(3V3) for digital I/O and HDMI transmitter (3.0–3.6 V), and two analog rails VDDA(FRO_3V3) and VDDA(PLL_3V3) (3.0–3.6 V each) - per Table 1 and Section 7.2 of the datasheet.
TDA9981BHL/8/C1,51 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- 80-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Transmitter
- Applications:
- Consumer Video
- Standards:
- HDMI 1.2a, ITU656
- Control Interface:
- I2C
- Voltage - Supply:
- 1.65V ~ 1.95, 3.0V ~ 3.6V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 80-LQFP (12x12)
TDA9981BHL/8/C1,51 FAQ
1.How can I place an order for TDA9981BHL/8/C1,51 through Aetrix?
Please submit a Request for Quotation (RFQ) for TDA9981BHL/8/C1,51 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 TDA9981BHL/8/C1,51 reliable?
The price and inventory of TDA9981BHL/8/C1,51 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TDA9981BHL/8/C1,51 is usually 5 days.
3.What payment methods are accepted for TDA9981BHL/8/C1,51?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TDA9981BHL/8/C1,51 transactions.
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4.How is shipping managed for TDA9981BHL/8/C1,51?
TDA9981BHL/8/C1,51 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TDA9981BHL/8/C1,51 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 TDA9981BHL/8/C1,51?
For technical support, including TDA9981BHL/8/C1,51 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TDA9981BHL/8/C1,51 requirements.
6.How does Aetrix verify that TDA9981BHL/8/C1,51 is sourced from the original manufacturer or authorized distributors?
All TDA9981BHL/8/C1,51 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 TDA9981BHL/8/C1,51 meets industry standards.
7.What is the process for return or replacement of TDA9981BHL/8/C1,51?
All TDA9981BHL/8/C1,51 units undergo pre-shipment inspection (PSI). If there is an issue with TDA9981BHL/8/C1,51, 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 TDA9981BHL/8/C1,51 part is unused and in its original packaging.
Return procedure for TDA9981BHL/8/C1,51:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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