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Texas Instruments TS3DV421RUAR
- Part No.:
- TS3DV421RUAR
- Manufacturer:
- Texas Instruments
- Category:
- Video Processing
- Package:
- 42-WFQFN Exposed Pad
- Datasheet:
-
TS3DV421RUAR.pdf
- Description:
- IC VIDEO SWITCH 42WQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,212
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Product details
Overview
TS3DV421RUAR from Texas Instruments is a 4-channel differential 2:1 HDMI/DVI multiplexer switch in a 42-pin WQFN package, supporting 3.8 Gbps data rate, 4.95 Gbps single-link bandwidth, and 1080p/SXGA video formats. It features 12.5 Ω max ON-state resistance, –50 dB typical crosstalk at 1.65 Gbps, and operates with VDD = 3.3 V / VSS = 1.5 V for HDMI applications.
For engineers reviewing the TS3DV421RUAR datasheet, TS3DV421RUAR pinout, TS3DV421RUAR application, or TS3DV421RUAR equivalent, this device serves as a high-fidelity TMDS signal routing solution for HDMI sink designs requiring dual-source selection, HDCP pass-through, and minimal bit-to-bit skew (0.1 ns max).
Technical Context
The TS3DV421RUAR implements a pass-transistor-based analog multiplexer architecture with independent differential channel switching across four TMDS lanes (data channels 0–2 and clock). Its control logic uses a single SEL input referenced to VSS, enabling GPIO-driven port A/B selection without level-shifting circuitry when VSS = 1.5 V.
It maintains 100-Ω differential impedance continuity through the switch path and supports partial-power-down via Ioff functionality. The exposed thermal pad must be connected to VSS or left floating-no internal connection to VDD-to ensure thermal stability and signal integrity in high-speed HDMI routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 3.8 Gbps - supports HDMI v1.3 and DVI 1.0 pixel clocks up to 165 MHz with 10× oversampling |
| Bandwidth | 4.95 Gbps (single-link) - enables full 1080p60 and SXGA@75 Hz video transmission without attenuation |
| rON (max) | 12.5 Ω - ensures minimal insertion loss and preserves TMDS eye diagram integrity at 1.65 Gbps |
| Crosstalk (XTALK) | –50 dB typ at 1.65 Gbps - prevents interference between active and inactive differential pairs |
| Off Isolation (OIRR) | –50 dB typ at 1.65 Gbps - isolates unselected port to prevent signal leakage into receiver path |
| Bit-to-Bit Skew | 0.1 ns max - maintains TMDS timing alignment across all four channels for error-free decoding |
| VDD/VSS Range | 3.0–3.6 V / 1.5 V - fixed dual-supply configuration required for HDMI compliance; not adjustable |
Pinout & Package
TS3DV421RUAR uses a 42-pin WQFN (RUA) package with 0.5 mm pitch, 9.0 × 3.5 mm body, and an exposed center thermal pad that must be soldered to VSS or left electrically open per TI design guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ATMDS0+ / ATMDS0– | Port A, Channel 0 differential I/O | Connects to source A's TMDS data pair 0; routed to TMDS0+/– when SEL = L |
| BTMDS0+ / BTMDS0– | Port B, Channel 0 differential I/O | Connects to source B's TMDS data pair 0; routed to TMDS0+/– when SEL = H |
| TMDS0+ / TMDS0– | Common output differential I/O | Drives HDMI receiver's channel 0 input; presents 100-Ω differential impedance |
| SEL | Digital select input | Active-high logic referenced to VSS; selects Port A (L) or Port B (H); no pull-up/down required |
| VDD (pins 18,20,30,40,42) | Positive supply | Must be 3.3 V ±0.3 V when VSS = 1.5 V; powers internal switch matrix and control logic |
| VSS (pins 1,3,5,13,17,19,21,39,41) | Negative supply/reference | Fixed at 1.5 V for HDMI operation; establishes common-mode voltage for TMDS signaling |
| Exposed Pad | Thermal & mechanical ground | Must be soldered to PCB VSS plane for thermal dissipation and EMI control; no electrical connection to VDD |
Key Features
| Feature | Design Value |
|---|---|
| HDCP compatibility | Passes encrypted HDMI content transparently without decryption or re-encryption overhead |
| Ioff partial-power-down | Prevents current backflow when VDD = 0, enabling safe hot-insertion in powered systems |
| Low rON flatness | 0.5 Ω typical variation across signal swing - minimizes harmonic distortion in high-frequency TMDS signals |
| Input/output capacitance | 4.5 pF max - reduces loading on upstream transmitter and downstream receiver traces |
| Latch-up immunity | Exceeds 100 mA per JESD 78 Class II - ensures robustness against transient overvoltage events |
Applications
| HDMI Sink Multiplexing | DVI Dual-Source Switching |
|---|---|
|
Use Scenario: A high-definition television with one HDMI receiver port must accept inputs from two independent sources (e.g., Blu-ray player and game console). IC Role / Device Role / Timing Role: TS3DV421RUAR acts as a bidirectional 2:1 TMDS multiplexer, selecting either Port A or Port B under SEL control while maintaining HDCP handshake continuity. Use Value: Enables seamless source switching without interrupting HDCP authentication or degrading 1080p60 signal integrity due to low skew and high isolation. |
Use Scenario: An AV receiver routes DVI video from either a PC or set-top box to a single projector input. IC Role / Device Role / Timing Role: TS3DV421RUAR functions as a passive analog switch for all four DVI TMDS differential pairs, preserving signal fidelity up to 165 MHz pixel clock. Use Value: Eliminates need for active redrivers or repeaters by delivering <0.1 ns inter-pair skew and >4.95 Gbps bandwidth within a single IC. |
| HDTV Input Expansion | HDMI Scalar Interface |
|
Use Scenario: A smart TV design expands its native HDMI port count from one to three using a single TS3DV421RUAR and auxiliary logic. IC Role / Device Role / Timing Role: TS3DV421RUAR serves as the front-end multiplexer feeding a video decoder/scaler, allowing dynamic source arbitration before processing. Use Value: Reduces BOM cost versus discrete solutions while meeting HDMI v1.3 electrical compliance (crosstalk ≤ –50 dB, OIRR ≤ –50 dB). |
Use Scenario: A video scaler IC receives TMDS input from multiple HDMI sources and requires clean, isolated signal paths prior to conversion. IC Role / Device Role / Timing Role: TS3DV421RUAR provides high-isolation channel selection ahead of the scaler's input buffer, preventing cross-talk-induced jitter accumulation. Use Value: Maintains <0.1 ns bit-to-bit skew across all lanes to preserve eye opening margin required for reliable pixel sampling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar HDMI/DVI multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TS3DV642RGZR | 8-channel, 2:1 mux in 64-pin QFN; higher channel count but larger footprint and 3.3-V-only supply (no VSS = 1.5 V support) | Required for systems needing >4 TMDS lanes (e.g., dual-link DVI or DisplayPort 1.2) | Select TS3DV642RGZR only when expanding beyond HDMI single-link requirements; not drop-in compatible with TS3DV421RUAR layout |
| PI3VDP421ZDE | 4-channel HDMI mux with integrated level shifters; supports 1.8-V/3.3-V dual supply without elevated VSS; lower bandwidth (3.4 Gbps) | Suitable for mixed-voltage systems where VSS = 0 V simplifies power design | Choose PI3VDP421ZDE if board-level VSS elevation to 1.5 V is impractical; verify 1080p60 margin given 3.4 Gbps limit |
Compared with TS3DV642RGZR and PI3VDP421ZDE, the TS3DV421RUAR uniquely balances compact 42-pin WQFN packaging, 3.8 Gbps performance, and native HDMI v1.3 compliance with VSS = 1.5 V biasing-making it optimal for space-constrained, single-link HDMI sink designs requiring guaranteed HDCP pass-through.
Availability
TS3DV421RUAR is available at Aetrix Electronics and suitable for HDMI sink multiplexing, DVI source switching, and high-definition television input expansion requiring stable component supply and long-term production continuity.
Supply support for TS3DV421RUAR 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 technologies with over 50 years of innovation in high-speed interface solutions.
The TS3DV421RUAR belongs to TI's high-speed analog switch portfolio, designed specifically for HDMI/DVI signal routing in consumer electronics and professional AV equipment where signal integrity and HDCP transparency are critical.
FAQ
What is the correct power supply configuration for TS3DV421RUAR in HDMI applications?
The TS3DV421RUAR requires VDD = 3.3 V and VSS = 1.5 V for HDMI compliance. This dual-supply setup establishes the proper common-mode voltage for TMDS signaling. Operating outside this range-such as VSS = 0 V or VDD ≠ 3.3 V-violates the device's recommended operating conditions and risks signal integrity failure or non-compliance with HDMI v1.3 specifications. The TS3DV421RUAR datasheet explicitly defines these values in Table 2 and Figure 1.
Does TS3DV421RUAR support HDCP pass-through, and how is it implemented?
Yes, TS3DV421RUAR supports HDCP pass-through transparently. It functions as an analog switch with no digital processing or encryption/decryption logic-HDCP authentication packets and encrypted video streams traverse the TMDS paths unchanged. This behavior is confirmed in the device description ("HDCP Compatible") and functional diagram, where no protocol-aware circuitry is present. The TS3DV421RUAR relies solely on maintaining signal integrity (low skew, high isolation) to preserve HDCP handshake reliability.
Can the exposed thermal pad on TS3DV421RUAR be connected to VDD instead of VSS?
No-the exposed thermal pad on TS3DV421RUAR must be connected to VSS or left electrically open (floating), as stated in the datasheet: "For RUA, the exposed center pad must be connected to VSS or electronically open." Connecting it to VDD violates the absolute maximum ratings and may cause latch-up or thermal instability. TI's package documentation (RUA0042A) further specifies that the pad is thermally and mechanically tied to the die substrate, not internally connected to any power rail.
What is the maximum supported video resolution and format for TS3DV421RUAR?
The TS3DV421RUAR supports all video formats up to 1080p and SXGA (1280 × 1024 at 75 Hz), as verified in the Features section and Electrical Characteristics table. Its 3.8 Gbps max data rate and 4.95 Gbps single-link bandwidth meet HDMI v1.3 and DVI 1.0 requirements for these resolutions. The device does not support 4K/UHD or higher, as those require ≥6 Gbps bandwidth and are outside the TS3DV421RUAR's specified operating range.
Is TS3DV421RUAR pin-compatible with TS3DV421DGVR?
No-TS3DV421RUAR (42-pin WQFN) and TS3DV421DGVR (48-pin TVSOP) have different pin counts, layouts, and package dimensions. While both share identical electrical functionality and signal naming, their terminal mappings differ significantly (e.g., SEL is pin 9 in DGV but pin 23 in RUA), and the RUA package includes an exposed thermal pad absent in DGV. Board-level replacement requires full PCB redesign; they are functionally equivalent but not pin-compatible.
TS3DV421RUAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 42-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Switch
- Applications:
- Consumer Video
- Standards:
- DVI 1.0, HDMI 1.3
- Control Interface:
- Serial
- Voltage - Supply:
- 1.5V ~ 2.1V, 3.0V ~ 3.6V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 42-WQFN (3.5x9)
TS3DV421RUAR FAQ
1.How can I place an order for TS3DV421RUAR through Aetrix?
Please submit a Request for Quotation (RFQ) for TS3DV421RUAR 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 TS3DV421RUAR reliable?
The price and inventory of TS3DV421RUAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TS3DV421RUAR is usually 5 days.
3.What payment methods are accepted for TS3DV421RUAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TS3DV421RUAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TS3DV421RUAR?
TS3DV421RUAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TS3DV421RUAR 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 TS3DV421RUAR?
For technical support, including TS3DV421RUAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TS3DV421RUAR requirements.
6.How does Aetrix verify that TS3DV421RUAR is sourced from the original manufacturer or authorized distributors?
All TS3DV421RUAR 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 TS3DV421RUAR meets industry standards.
7.What is the process for return or replacement of TS3DV421RUAR?
All TS3DV421RUAR units undergo pre-shipment inspection (PSI). If there is an issue with TS3DV421RUAR, 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 TS3DV421RUAR part is unused and in its original packaging.
Return procedure for TS3DV421RUAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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