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Diodes Incorporated PI3HDX412BDZBE
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- Part No.:
- PI3HDX412BDZBE
- Manufacturer:
- Diodes Incorporated
- Category:
- Specialized
- Package:
- 56-VFQFN Exposed Pad
- Datasheet:
-
PI3HDX412BDZBE.pdf
- Description:
- IC INTERFACE SPECIALIZED 56TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,006
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Product details
Overview
PI3HDX412BDZBE from Diodes Incorporated (acquired Pericom) is an active HDMI 1.4b-compliant 1:2 TMDS splitter/demultiplexer with equalization and pre-emphasis, supporting up to 3.4 Gbps data rate (340 MHz TMDS clock), 3.3 V supply, and industrial temperature range (–40°C to +85°C). It drives differential signals to two independent HDMI displays from a single graphics source, used on the video driver side in PC graphics cards for multi-display routing.
For engineers reviewing the PI3HDX412BDZBE datasheet, PI3HDX412BDZBE pinout, PI3HDX412BDZBE application, or PI3HDX412BDZBE equivalent, key selection criteria include TMDS channel count, 3.4 Gbps bandwidth compliance, I²C/pin-strapped configuration mode, Hi-Z output enablement, and integrated squelch with clock detection.
Technical Context
The PI3HDX412BDZBE implements a unidirectional active TMDS channel splitter architecture with programmable pre-emphasis (to improve rise/fall times) and receiver-side equalization to compensate for high-frequency loss over long cables. Its internal squelch circuit monitors TMDS clock presence and disables outputs when no valid signal is detected.
Configuration is supported in two modes: pin-strapped (hardwired logic levels on MODE/SEL pins) or I²C-controlled (7-bit slave address 0x4A), enabling dynamic adjustment of output swing, slew rate, and pre-emphasis level per port. All I/Os are AC- or DC-coupled differential interfaces compliant with HDMI 1.4b electrical specifications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 3.4 Gbps - supports 1920×1080@60Hz and 4K@30Hz HDMI 1.4b video streams |
| TMDS Channels | 1 input → 2 outputs - active splitting with Hi-Z output disable capability |
| Supply Voltage | 3.3 V ±5% - single-rail operation compatible with standard GPU I/O domains |
| Operating Temp | –40°C to +85°C - qualified for industrial and embedded display systems |
| ESD Protection | ±8 kV contact (IEC 61000-4-2), ±2 kV HBM - robust interface protection for consumer-grade HDMI ports |
| Control Interface | I²C (0x4A) or pin-strapped - enables static configuration or runtime reconfiguration |
| Pre-emphasis | Programmable per-port - compensates for interconnect loss in >10 m HDMI cables |
Pinout & Package
Package: 56-pin TQFN (ZB56), 7.0 mm × 4.5 mm, 0.5 mm pitch, exposed thermal pad, Pb-free and RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply | 3.3 V main supply for analog and digital core |
| GND | Ground reference | Common return for all analog/digital circuits and thermal pad |
| TMDS_IN_P/N | Differential input | AC- or DC-coupled HDMI/DVI TMDS data/clock input pair |
| TMDS_A_P/N, TMDS_B_P/N | Differential outputs | Two independent TMDS output channels with Hi-Z disable control |
| MODE | Interface select | High = I²C mode; Low = pin-strapped configuration mode |
| SCL, SDA | I²C bus | Standard two-wire interface for register access (address 0x4A) |
| OE_A, OE_B | Output enable | Active-low enables/disables respective TMDS output channels |
| SQ_EN | Squelch enable | Activates built-in clock detector to auto-disable outputs during signal loss |
Key Features
| Feature | Design Value |
|---|---|
| Programmable pre-emphasis | Adjustable per-output channel to restore edge integrity over 15 m HDMI cables |
| Integrated squelch with clock detect | Automatically disables TMDS outputs when input clock drops below 200 kHz, reducing EMI and power |
| Dual-mode configuration | Hardware pin control or I²C register programming - supports both fixed BOM and field-upgradable designs |
| Hi-Z output disable | Each output port can be independently placed in high-impedance state without affecting the other |
| DC/AC-coupled input support | Compatible with both capacitor-coupled (HDMI) and direct-coupled (DVI) source interfaces |
Applications
| PC Graphics Multi-Display Hub | HDMI Distribution Amplifier |
|---|---|
Use Scenario: A discrete GPU routes one HDMI source to dual independent displays (e.g., monitor + projector). IC Role / Device Role / Timing Role: Active 1:2 TMDS splitter on driver side, providing signal regeneration and cable-loss compensation. Use Value: Enables simultaneous 1080p60 output to two displays without timing skew or signal degradation over 10+ m cables. | Use Scenario: Commercial AV system distributes HDMI signal from media server to multiple plasma displays in digital signage. IC Role / Device Role / Timing Role: Unidirectional HDMI repeater with squelch and configurable swing for long-cable reliability. Use Value: Maintains 3.4 Gbps eye opening across 15 m HDMI cables while suppressing noise during source disconnect. |
| Embedded Industrial Video Gateway | 4K@30Hz Display Switching Module |
Use Scenario: Ruggedized medical imaging workstation outputs diagnostic video to local screen and remote display over extended traces. IC Role / Device Role / Timing Role: TMDS signal conditioner with industrial temp rating and ESD-hardened I/Os. Use Value: Ensures stable 1080p60 transmission in fanless enclosures with wide ambient temperature swings. | Use Scenario: Set-top box or media player switches between two 4K-capable displays (e.g., TV and VR headset). IC Role / Device Role / Timing Role: HDMI 1.4b splitter supporting 340 MHz clock and 4K@30Hz pixel clock timing. Use Value: Delivers full-bandwidth 4K video to either display without requiring source retraining or HDCP renegotiation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar HDMI 1.4b 1:2 splitter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TPD12S016 | Passive ESD protection IC with HDMI level-shifting; no active splitting or pre-emphasis | Used only for interface protection at connector, not signal distribution | Select when only ESD/clamp protection is needed, not signal replication |
| Parade PS8409 | Active HDMI 2.0 1:2 repeater with 6 Gbps support, integrated HDCP 2.2, and automatic link training | Supports 4K@60Hz and HDCP 2.2; requires additional firmware and power sequencing | Select for next-gen 4K@60Hz/HDCP 2.2 systems where backward compatibility with 1.4b is secondary |
Compared with TPD12S016 and PS8409, the PI3HDX412BDZBE uniquely balances HDMI 1.4b compliance, low-latency active splitting, and minimal BOM overhead-making it optimal for cost-sensitive, high-volume PC graphics and industrial display hubs requiring 3.4 Gbps performance without HDCP or 4K@60Hz complexity.
Availability
PI3HDX412BDZBE is available at Aetrix Electronics and suitable for PC graphics multi-display hubs, HDMI distribution amplifiers, embedded industrial video gateways, and 4K@30Hz display switching modules requiring stable component supply and long-lifecycle support.
Supply support for PI3HDX412BDZBE 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
Diodes Incorporated acquired Pericom Semiconductor in 2017 and integrates its high-speed interface portfolio into signal integrity solutions for consumer, computing, and industrial markets.
The PI3HDX412BDZBE belongs to Pericom's legacy HDMI/DVI active switch product line, designed specifically for reliable, low-jitter TMDS signal distribution in graphics driver-side applications with long-cable reach.
FAQ
What is the function of the SQ_EN pin on PI3HDX412BDZBE?
The SQ_EN (Squelch Enable) pin activates the device's built-in clock detector circuit. When asserted, it monitors the TMDS clock input and automatically places both TMDS outputs into high-impedance state if the clock frequency falls below ~200 kHz-preventing spurious output during source disconnection or sleep mode, reducing EMI and power consumption.
Can PI3HDX412BDZBE be used in HDMI 2.0 systems?
No. The PI3HDX412BDZBE is specified for HDMI 1.4b with a maximum data rate of 3.4 Gbps (340 MHz TMDS clock), insufficient for HDMI 2.0's 6 Gbps minimum requirement. It does not support HDMI 2.0 features such as 4K@60Hz, HDR metadata transport, or enhanced audio return channel (eARC).
Does PI3HDX412BDZBE require external termination resistors?
No. The device integrates 50 Ω differential termination on all TMDS inputs and outputs, eliminating need for external 100 Ω resistors. This simplifies PCB layout and ensures consistent impedance matching across varying trace lengths and connector types in HDMI/DVI interfaces.
How is output voltage swing configured on PI3HDX412BDZBE?
Voltage swing is configured via I²C register writes (address 0x4A, registers 0x04–0x05) or pin-strapped resistor networks on VS_A/VS_B pins. Four selectable levels (800 mV, 900 mV, 1000 mV, 1100 mV differential) allow optimization for different cable lengths and sink input sensitivity without changing hardware.
PI3HDX412BDZBE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 56-VFQFN Exposed Pad
- Packaging:
- Tray
- Product Status:
- Discontinued at Digi-Key
- Applications:
- HDMI
- Interface:
- -
- Voltage - Supply:
- 3.3V
- Supplier Device Package:
- 56-TQFN (8x8)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
PI3HDX412BDZBE FAQ
1.How can I place an order for PI3HDX412BDZBE through Aetrix?
Please submit a Request for Quotation (RFQ) for PI3HDX412BDZBE 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 PI3HDX412BDZBE reliable?
The price and inventory of PI3HDX412BDZBE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3HDX412BDZBE is usually 5 days.
3.What payment methods are accepted for PI3HDX412BDZBE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3HDX412BDZBE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI3HDX412BDZBE?
PI3HDX412BDZBE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI3HDX412BDZBE 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 PI3HDX412BDZBE?
For technical support, including PI3HDX412BDZBE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3HDX412BDZBE requirements.
6.How does Aetrix verify that PI3HDX412BDZBE is sourced from the original manufacturer or authorized distributors?
All PI3HDX412BDZBE 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 PI3HDX412BDZBE meets industry standards.
7.What is the process for return or replacement of PI3HDX412BDZBE?
All PI3HDX412BDZBE units undergo pre-shipment inspection (PSI). If there is an issue with PI3HDX412BDZBE, 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 PI3HDX412BDZBE part is unused and in its original packaging.
Return procedure for PI3HDX412BDZBE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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