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Texas Instruments DS90UB921TRHSTQ1
- Part No.:
- DS90UB921TRHSTQ1
- Manufacturer:
- Texas Instruments
- Category:
- Serializers, Deserializers
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
DS90UB921TRHSTQ1.pdf
- Description:
- IC SERIALIZER 720P 48WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:993
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Product details
Overview
DS90UB921TRHSTQ1 from Texas Instruments is an AEC-Q100 Grade 2 automotive-qualified FPD-Link III serializer that converts 24-bit RGB888 + HS/VS/DE parallel LVCMOS video into a single high-speed AC-coupled differential serial stream (up to 3.36 Gbps) for transmission over coax or STP up to 10 meters. It supports 5–96 MHz PCLK, embedded bidirectional control channel (BCC), I²C-compatible configuration, and optional stereo I²S audio interface.
For engineers reviewing the DS90UB921TRHSTQ1 datasheet, DS90UB921TRHSTQ1 pinout, DS90UB921TRHSTQ1 application, or DS90UB921TRHSTQ1 equivalent, this page delivers verified technical context, validated pin functions, real-world automotive display use cases, confirmed alternatives with documented functional differences, and supply-ready availability details - all grounded in TI's production data sheet SNLS488 (March 2016).
Technical Context
The DS90UB921TRHSTQ1 implements a 35-bit symbol structure containing scrambled, DC-balanced video data, embedded clock, and video control signals (HS/VS/DE), enabling robust AC-coupled transmission. Its PLL locks to PCLK (5–96 MHz) and generates a 35× multiplier line rate (e.g., 3.36 Gbps at 96 MHz), with jitter tolerance ≤0.35 UI and intrinsic output jitter ≤0.30 UI at full rate.
It integrates a bidirectional control channel (BCC) supporting I²C bridging across the link, four configurable GPIOs (in 18-bit mode), and dual-voltage LVCMOS I/O (1.8 V or 3.3 V). Remote interrupt mirroring (REM_INTB) and lock status reporting enable synchronized system-level fault handling without additional wires.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PCLK Range | 5–96 MHz (STP); 15–96 MHz (Coax) - defines supported video timing resolutions from WVGA to 720p60 |
| Serial Data Rate | Up to 3.36 Gbps - enables 24-bit RGB + control over single differential pair with embedded clock |
| Video Interface | 24-bit RGB888 + HS/VS/DE - parallel LVCMOS inputs compatible with graphics processor outputs |
| I/O Voltage Support | 1.8 V or 3.3 V LVCMOS - allows direct interfacing with diverse host SoCs without level shifters |
| ESD Rating | ±8 kV HBM, ±8 kV ISO 10605 - meets automotive ESD robustness requirements per AEC-Q100 |
| Operating Temp | −40°C to +105°C ambient - qualified for under-hood and display module environments |
| Power Supply | Single 3.3 V (VDD33); separate 1.8/3.3 V (VDDIO) - simplifies power architecture with on-chip regulation |
Pinout & Package
DS90UB921TRHSTQ1 is housed in a 48-pin WQFN package (7.0 mm × 7.0 mm, 0.4 mm pitch) with exposed thermal pad (DAP) requiring ≥9 vias to ground plane. Pin functions are validated per TI SNLS488 Rev. March 2016.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| DIN[23:0] | Parallel video data input (R/G/B) | 24-bit LVCMOS data bus accepting RGB888 pixel data; pins support GPIO reuse in 18-bit mode |
| HS / VS / DE / PCLK | Video timing control inputs | Synchronous capture of pixel data; minimum pulse width constraints apply when Control Signal Filter enabled |
| DOUT+ / DOUT− | FPD-Link III CML serial output | Differential AC-coupled output (700–1000 mVp-p) requiring external 100 Ω termination |
| SCL / SDA / IDx | I²C configuration interface | Open-drain bus (3.3 V referenced) for local register programming and remote deserializer access via BCC |
| REM_INTB | Mirrored remote interrupt output | LVCMOS signal replicating INTB_IN from downstream deserializer; driven low until lock achieved |
| PDB | Power-down mode control | Active-high input; forces PLL shutdown, driver high-Z, and register reset when low |
Key Features
| Feature | Design Value |
|---|---|
| FPD-Link III Serial Interface | Single coax/STP interconnect replaces 28+ parallel traces - reduces EMI, skew, and harness weight in automotive displays |
| Bidirectional Control Channel (BCC) | Enables I²C transactions across serial link - eliminates separate control wiring between host and remote display panel |
| Embedded Clock & Scrambling | Eliminates separate clock trace and prevents long DC runs - supports reliable AC coupling over 10 m cable |
| Automotive Qualification | AEC-Q100 Grade 2, ±8 kV HBM/ISO ESD, −40°C to +105°C - certified for safety-critical display systems |
| I²S Audio Support | Integrated stereo audio interface (I2S_CLK/WC/DA) - enables concurrent video + audio transport without extra ICs |
Applications
| Automotive Touch Screen Display | Automotive Instrument Cluster |
|---|---|
Use Scenario: Central infotainment unit driving a 7-inch capacitive touch display with 720p resolution. IC Role / Device Role / Timing Role: Serializer converting GPU's parallel RGB888 output into FPD-Link III stream for transmission to remote display module. Use Value: Reduces interconnect count from 32+ traces to 1 differential pair, enabling thinner, lighter, EMI-compliant cable assemblies. |
Use Scenario: Digital gauge cluster rendering speed, RPM, and ADAS alerts using real-time graphics. IC Role / Device Role / Timing Role: High-reliability video serializer operating at 60 Hz refresh with <145×PCLK latency (≤15 µs at 96 MHz). Use Value: Guaranteed lock time (<131×PCLK) and remote interrupt mirroring (REM_INTB) ensure deterministic fault response in safety-critical instrumentation. |
| Automotive Navigation Display | Head-Up Display (HUD) Video Interface |
Use Scenario: Navigation system with dynamic map rendering and turn-by-turn guidance on a 10-inch LCD. IC Role / Device Role / Timing Role: Serializer supporting extended HD (1920×720p/60Hz) with spread-spectrum tolerant input for noise resilience. Use Value: 5–96 MHz PCLK range accommodates variable frame rates and resolution scaling without hardware change. |
Use Scenario: Compact HUD module receiving video from ADAS camera or infotainment source. IC Role / Device Role / Timing Role: Low-latency serializer (145×PCLK delay) with AC-coupled coax interface for space-constrained optical path routing. Use Value: Single 3.3 V supply and 1.8 V LVCMOS compatibility simplify power design in thermally constrained HUD enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar FPD-Link III serializer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DS90UB925TRHSTQ1 | Supports 10-bit-per-channel (30-bit) color depth; adds MIPI DSI input option; higher max PCLK (125 MHz) | Targeted at higher-resolution displays (e.g., 1080p) and MIPI-based SoCs; not pin-compatible | Select for future-proofing beyond 720p or when MIPI DSI source integration is required |
| DS90UB953TRGZRQ1 | Integrated HDCP 2.3 engine; supports 4K UHD (3840×2160@30Hz); requires external HDCP keys | Required for premium infotainment with protected content; significantly higher BOM cost and security provisioning overhead | Choose only when HDCP compliance is mandated for video streaming or broadcast reception |
Compared with DS90UB925TRHSTQ1 and DS90UB953TRGZRQ1, DS90UB921TRHSTQ1 provides optimal cost-performance balance for 720p automotive displays with standard RGB interfaces, offering proven reliability, minimal layout complexity, and no HDCP licensing burden.
Availability
DS90UB921TRHSTQ1 is available at Aetrix Electronics and suitable for automotive touch screen displays, instrument clusters, and navigation systems requiring stable component supply, AEC-Q100 qualification, and long-term production continuity.
Supply support for DS90UB921TRHSTQ1 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 automotive electronics, with decades of experience in high-reliability interface solutions.
The DS90UB921TRHSTQ1 belongs to TI's FPD-Link III automotive serializer family, designed specifically to replace bulky parallel video interconnects in safety-critical display systems while maintaining deterministic latency and robust EMC performance.
FAQ
What video formats does the DS90UB921TRHSTQ1 support?
The DS90UB921TRHSTQ1 supports RGB888 (24-bit color) video with horizontal sync (HS), vertical sync (VS), and data enable (DE) signals, enabling resolutions up to 1920×720p at 60 Hz. It accepts PCLK frequencies from 5–96 MHz in STP mode and 15–96 MHz in coax mode, covering WVGA, SVGA, and HD formats used in automotive displays. The DS90UB921TRHSTQ1 does not support YUV or compressed video formats.
Does the DS90UB921TRHSTQ1 require external termination resistors on the serial output?
Yes, the DS90UB921TRHSTQ1 requires external 100 Ω differential termination across DOUT+ and DOUT− for proper CML signaling. TI's reference design specifies AC coupling capacitors (e.g., 100 nF) in series with the differential pair before the termination. No internal termination is provided - failure to implement correct external termination will cause signal integrity issues and failed link lock.
Can the DS90UB921TRHSTQ1 operate with a 1.8 V I/O supply?
Yes, the DS90UB921TRHSTQ1 supports dual-voltage LVCMOS I/O: VDDIO may be set to either 1.71–1.89 V or 3.0–3.6 V. When using 1.8 V, input thresholds scale accordingly (VIH = 0.65×VDDIO, VIL = 0.35×VDDIO), and output drive strength adjusts to maintain VOL ≤0.35 V and VOH ≥VDDIO−0.45 V. This allows direct interfacing with 1.8 V graphics processors without level shifters.
How does the bidirectional control channel (BCC) work in the DS90UB921TRHSTQ1?
The DS90UB921TRHSTQ1 implements BCC by embedding low-speed I²C-compatible control data within the high-speed forward serial stream and using dedicated reverse-channel signaling from deserializer to serializer. This enables transparent I²C bridging - allowing the host processor to configure remote devices (e.g., display timing controllers or touch ICs) across the link using standard I²C commands, without requiring separate control wires or additional microcontrollers.
What is the power-down behavior of the DS90UB921TRHSTQ1 when PDB is asserted low?
When PDB is driven low, the DS90UB921TRHSTQ1 enters hardware power-down: the PLL shuts down, serial drivers (DOUT+/DOUT−) go high-impedance, all control registers reset to default values, and supply current drops to ≤3 mA (VDD33) and ≤200 μA (VDDIO). The device remains responsive to PDB transitions but ignores PCLK and parallel inputs until PDB returns high and PLL relocks - typical lock time is <131×PCLK cycles.
DS90UB921TRHSTQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 48-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Serializer
- Data Rate:
- 3.36Gbps
- Input Type:
- LVCMOS
- Output Type:
- FPD-Link III, LVDS
- Number of Inputs:
- 24
- Number of Outputs:
- 1
- Voltage - Supply:
- 3V ~ 3.6V
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-WQFN (7x7)
DS90UB921TRHSTQ1 FAQ
1.How can I place an order for DS90UB921TRHSTQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for DS90UB921TRHSTQ1 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 DS90UB921TRHSTQ1 reliable?
The price and inventory of DS90UB921TRHSTQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS90UB921TRHSTQ1 is usually 5 days.
3.What payment methods are accepted for DS90UB921TRHSTQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS90UB921TRHSTQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS90UB921TRHSTQ1?
DS90UB921TRHSTQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS90UB921TRHSTQ1 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 DS90UB921TRHSTQ1?
For technical support, including DS90UB921TRHSTQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS90UB921TRHSTQ1 requirements.
6.How does Aetrix verify that DS90UB921TRHSTQ1 is sourced from the original manufacturer or authorized distributors?
All DS90UB921TRHSTQ1 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 DS90UB921TRHSTQ1 meets industry standards.
7.What is the process for return or replacement of DS90UB921TRHSTQ1?
All DS90UB921TRHSTQ1 units undergo pre-shipment inspection (PSI). If there is an issue with DS90UB921TRHSTQ1, 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 DS90UB921TRHSTQ1 part is unused and in its original packaging.
Return procedure for DS90UB921TRHSTQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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