My Inquiry
My Account
Diodes Incorporated PI3HDX621FBE
- Part No.:
- PI3HDX621FBE
- Manufacturer:
- Diodes Incorporated
- Category:
- Specialized
- Package:
- 48-LQFP
- Datasheet:
-
PI3HDX621FBE.pdf
- Description:
- IC INTERFACE SPECIALIZED 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:378
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
PI3HDX621FBE from Pericom is an active 2:1 HDMI 1.4b-compliant switch for sink-side applications, supporting 3.4 Gbps per lane, 48-bit Deep Color, integrated ARC and DDC multiplexing, and programmable equalization (9 dB or 15 dB) and pre-emphasis (0 dB or 2.5 dB). It operates across -40°C to +85°C on a single 3.3 V supply with 8 kV IEC61000-4-2 ESD protection.
For engineers reviewing the PI3HDX621FBE datasheet, PI3HDX621FBE pinout, PI3HDX621FBE application, or PI3HDX621FBE equivalent, key selection criteria include TMDS signal integrity optimization via configurable EQ/pre-emphasis, dual-port HPD management, ARC signal routing capability, and industrial-grade thermal/ESD robustness in LQFP-48 packaging.
Technical Context
The PI3HDX621FBE implements a high-speed analog 2:1 TMDS multiplexer with integrated redriver functionality-equalizing inputs and pre-emphasizing outputs-to compensate for channel loss over long cables. Its control logic supports fast port switching via SEL1 and output enable/disable via OEB, with automatic squelch triggered by idle TMDS clock detection.
It integrates a 2:1 DDC mux and dedicated ARC signal path (SPDIF_IN → ARC_OUT), both compliant with HDMI 1.4b ARC timing and voltage swing requirements (0.4–0.6 Vpp). The device uses internal 120 kΩ pull-down on HPD_SINK and open-drain HPD1/HPD2 outputs requiring external pull-ups.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Max Data Rate | 3.4 Gbps per lane - supports HDMI 1.4b 4K@30Hz and 1080p@120Hz with Deep Color |
| Supply Voltage | 3.0–3.6 V - single-rail operation compatible with standard 3.3 V system rails |
| Operating Temp | -40°C to +85°C - qualified for industrial and consumer A/V equipment environments |
| TMDS Output Swing | 400–600 mV single-ended - meets HDMI 1.4b DC-coupled current-steering compliance |
| Input Termination | 50 Ω ±10% - matches standard HDMI source impedance for minimal reflection |
| ARC Output Swing | 0.4–0.6 Vpp at 6.144 MHz - satisfies HDMI 1.4b ARC single-mode waveform specification |
| ESD Protection | ±8 kV contact (IEC61000-4-2 Level 4) - protects I/O pins against real-world connector handling events |
| Power Consumption | 120–230 mA typical - scales with termination mode (open-drain vs. double termination) |
Pinout & Package
PI3HDX621FBE is housed in a Pb-free, green 48-contact LQFP package (FB48), with 0.5 mm pitch, 7 mm × 7 mm body size, and exposed thermal pad. Pin 1 is marked by a dot; pins are numbered counter-clockwise starting from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKN1/CLKP1, D0N1/D0P1–D2N1/D2P1 | Port 1 TMDS differential inputs | 50 Ω terminated inputs accepting HDMI source signals; support AC or DC coupling |
| CLKN2/CLKP2, D0N2/D0P2–D2N2/D2P2 | Port 2 TMDS differential inputs | Second independent HDMI input path with identical electrical interface and termination |
| CLKN/CLKP, D0N/D0P–D2N/D2P | TMDS differential outputs | Single output bus driving HDMI sink; Rout = 50 Ω (double termination) or open-drain selectable via ROUT_S0 |
| SEL1 | Port selection control | Active-high selects Port 1; active-low selects Port 2 - enables hardware-selectable source switching |
| OEB | Output enable (active low) | Disables all TMDS outputs when high; required for power gating during standby or HPD-driven shutdown |
| HPD_SINK | Sink-side hot-plug detect input | Internal 120 kΩ pull-down; floating or grounded state triggers TMDS output shutdown (not DDC) |
| HPD1 / HPD2 | Open-drain HPD outputs | Drive external pull-up resistors to indicate presence of connected sources; no internal pull-up |
| SCL1/SDA1, SCL2/SDA2 | Port 1 & 2 DDC bidirectional lines | Pass-through I²C channels for EDID read/write; routed through internal 2:1 mux to SCL_SINK/SDA_SINK |
| SCL_SINK / SDA_SINK | Sink-side DDC interface | Connects to downstream display controller; supports standard HDMI DDC protocol up to 100 kHz |
| SPDIF_IN / ARC_OUT | ARC signal path | Single-mode ARC input and output with 55 Ω output resistance and <25 ns rise/fall time |
| EQ_S0 / OC_S0 / ROUT_S0 | Configuration pins | Set input equalization (9/15 dB), output pre-emphasis (0/2.5 dB), and output termination (open-drain/double) |
| VDD (pins 1,12,31) | Power supply | 3.3 V main supply; four total VDD pins require individual 0.1 µF decoupling + shared 10 µF bulk cap |
| VDD_REG (pin 30) | Internal LDO output | Provides regulated core voltage; requires 2.2–4.7 µF capacitor to GND for stability |
| GND (pins 4,9,17,34) | Ground reference | Four dedicated ground pins minimize noise coupling; must connect to low-impedance ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Programmable TMDS equalization | 9 dB or 15 dB gain boost on data lanes - compensates for high-frequency loss in long or lossy cables |
| Selectable output pre-emphasis | 0 dB or 2.5 dB high-frequency boost - restores edge integrity at receiver after channel attenuation |
| Configurable output termination | Double termination (50 Ω) or open-drain mode - adapts to sink-side load and PCB trace topology |
| Automatic TMDS squelch | Detects idle clock and disables outputs - reduces power consumption and EMI during inactive states |
| Integrated ARC and DDC mux | Single-chip routing of audio return and display data channels - eliminates discrete mux ICs and layout complexity |
| Industrial temperature range | -40°C to +85°C operation - ensures reliability in set-top boxes, AV receivers, and embedded displays |
Applications
| Home Theater AV Receiver | Notebook Docking Station |
|---|---|
|
Use Scenario: Switching between two HDMI sources (Blu-ray player and game console) into a single HDMI output feeding a projector or soundbar with ARC support. IC Role / Device Role / Timing Role: Sink-side 2:1 active switch managing TMDS, DDC, and ARC paths while maintaining HDMI 1.4b compliance and signal integrity. Use Value: Enables seamless source switching without manual cable swaps, preserves EDID negotiation, and delivers synchronized audio return via integrated ARC driver. |
Use Scenario: Supporting dual-HDMI-input docking solutions where a notebook connects to external monitors and audio systems via a compact dock. IC Role / Device Role / Timing Role: Acts as a re-timer and mux at the dock's HDMI sink interface, conditioning signals from either laptop or auxiliary source before routing to display. Use Value: Maintains 3.4 Gbps bandwidth across variable-length cables, reduces jitter (<30 ps peak-to-peak), and simplifies design with single-chip DDC/ARC integration. |
| Set-Top Box with Dual Tuner Input | HDMI Dongle with ARC Support |
|
Use Scenario: Aggregating video streams from two independent tuners (e.g., satellite and terrestrial) into one HDMI output for TV display with audio return to set-top box. IC Role / Device Role / Timing Role: Active TMDS switch with built-in equalization and ARC signal path - handles hot-plug detection, EDID passthrough, and audio return channel routing. Use Value: Eliminates need for external level shifters or discrete ARC transceivers; supports deep color and fast switching without visible artifacts. |
Use Scenario: Miniaturized HDMI dongle that accepts two HDMI inputs (e.g., PC and streaming stick) and routes to TV while enabling ARC for TV speaker audio playback. IC Role / Device Role / Timing Role: Compact LQFP-48 HDMI sink switch providing full signal conditioning, DDC arbitration, and ARC signal generation in space-constrained form factor. Use Value: Achieves full HDMI 1.4b feature set in sub-2 cm² PCB area; leverages internal ESD protection to reduce external TVS count. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar HDMI 1.4b sink-side switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PI3HDX412BD | 1:2 active splitter (not 2:1 switch); lacks ARC support; fixed 9 dB EQ; no HPD_SINK squelch | Used for fan-out to dual displays, not source selection; requires external ARC solution | Choose only if splitting-not switching-is required and ARC is handled separately |
| TS3DV642 | TI 2:1 HDMI switch; supports 3.4 Gbps but no integrated ARC; no programmable EQ/pre-emphasis; 0.8 mm pitch QFN-64 | Requires external ARC transceiver and signal conditioning ICs; higher pin count and denser layout | Select when leveraging TI ecosystem tools or needing QFN thermal performance over LQFP manufacturability |
Compared with PI3HDX412BD and TS3DV642, the PI3HDX621FBE uniquely combines 2:1 switching, ARC signal routing, and fully programmable signal conditioning in a single LQFP-48 package-reducing BOM count, PCB area, and validation effort for sink-side HDMI aggregation.
Availability
PI3HDX621FBE is available at Aetrix Electronics and suitable for notebook docking stations, set-top boxes, home theater receivers, and HDMI dongles requiring stable component supply, industrial temperature operation, and integrated ARC functionality.
Supply support for PI3HDX621FBE 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
Pericom Semiconductor (now part of Diodes Incorporated) specialized in high-speed interface ICs for digital video, timing, and signal integrity applications before its 2016 acquisition.
The PI3HDX621FBE belongs to Pericom's HDMI redriver and switch product line, designed specifically for sink-side signal aggregation in consumer A/V equipment with emphasis on ESD robustness, low-power standby, and seamless DDC/ARC integration.
FAQ
What is the function of the HPD_SINK pin?
The HPD_SINK pin is a sink-side hot-plug detect input with an internal 120 kΩ pull-down resistor. When left floating or tied to GND, it forces the TMDS outputs into shutdown/sleep mode to reduce power dissipation. It does not affect DDC communication, which remains active regardless of HPD_SINK state.
How does the PI3HDX621FBE handle TMDS signal integrity over long cables?
The device applies programmable 9 dB or 15 dB equalization to TMDS inputs and 0 dB or 2.5 dB pre-emphasis to outputs, compensating for frequency-dependent loss in cables up to 15 meters. Its 50 Ω input termination and configurable 50 Ω double-termination or open-drain output modes further optimize signal fidelity.
Can the PI3HDX621FBE be used in source-side applications?
No. The PI3HDX621FBE is explicitly designed for sink-side use: its TMDS outputs drive a display, its HPD_SINK pin expects sink-side logic levels, and its ARC_OUT pin transmits audio from TV back to source. Using it on the source side violates HDMI 1.4b electrical and protocol requirements.
What decoupling capacitors are required for stable operation?
Four 0.1 µF ceramic (X5R/X7R) capacitors-one per VDD pin (pins 1, 12, 31, and implied fourth)-plus a 2.2–4.7 µF capacitor on VDD_REG (pin 30) to GND. A shared 10 µF bulk capacitor near the device is also recommended, placed centrally among the 0.1 µF caps for optimal power rail stability.
PI3HDX621FBE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- 48-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- Sink Switch
- Interface:
- -
- Voltage - Supply:
- 3.3V
- Supplier Device Package:
- 48-LQFP (7x7)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
PI3HDX621FBE FAQ
1.How can I place an order for PI3HDX621FBE through Aetrix?
Please submit a Request for Quotation (RFQ) for PI3HDX621FBE 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 PI3HDX621FBE reliable?
The price and inventory of PI3HDX621FBE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI3HDX621FBE is usually 5 days.
3.What payment methods are accepted for PI3HDX621FBE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI3HDX621FBE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI3HDX621FBE?
PI3HDX621FBE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI3HDX621FBE 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 PI3HDX621FBE?
For technical support, including PI3HDX621FBE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI3HDX621FBE requirements.
6.How does Aetrix verify that PI3HDX621FBE is sourced from the original manufacturer or authorized distributors?
All PI3HDX621FBE 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 PI3HDX621FBE meets industry standards.
7.What is the process for return or replacement of PI3HDX621FBE?
All PI3HDX621FBE units undergo pre-shipment inspection (PSI). If there is an issue with PI3HDX621FBE, 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 PI3HDX621FBE part is unused and in its original packaging.
Return procedure for PI3HDX621FBE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
PI3HDX621FBE Tags
-
NVT4857UKAZ
NXP USA Inc.
-
TCA8418RTWR
Texas Instruments
-
PCA9546APWR
Texas Instruments
-
MD0100N8-G
Microchip Technology
-
PCA9548APW,118
NXP USA Inc.
-
PCA9540BDP,118
NXP USA Inc.
-
PCA9548APWR
Texas Instruments
-
PCA9546APW,118
NXP USA Inc.
-
PTN3360DBS,518
NXP USA Inc.
-
PCA9546ABS,118
NXP USA Inc.
-
PCA9518PWR
Texas Instruments
-
PCA9545APW,118
NXP USA Inc.
Tech Hub
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…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
