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Analog Devices Inc./Maxim Integrated MAX4929EETP+T
- Part No.:
- MAX4929EETP+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Video Processing
- Package:
- 20-WFQFN Exposed Pad
- Datasheet:
-
MAX4929EETP+T.pdf
- Description:
- IC VIDEO SWITCH 20TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,146
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Product details
Overview
The MAX4929EETP+ from Maxim Integrated is a low-frequency 2:1 HDMI/DVI translating switch with integrated voltage clamping and level translation for DDC (I²C) lines. It supports dual supply operation (V+ = 4.5V–5.5V, VL/CLP = 2V–5.5V), provides ±6kV HBM ESD protection on SCL/SDA/HPD pins, features 20pF typical off-capacitance, and operates across –40°C to +85°C. It enables hot-plug detection and EDID EPROM protection in HD television receivers.
For engineers reviewing the MAX4929EETP+ datasheet, MAX4929EETP+ pinout, MAX4929EETP+ application, or MAX4929EETP+ equivalent, this page delivers verified functional role, real-world timing behavior, confirmed voltage translation ranges, validated package thermal characteristics, and precise logic-level compatibility for HDMI system integration.
Technical Context
The MAX4929EETP+ implements a dual-channel analog switch architecture for SCL/SDA signals, with independent enable control (HIZ1/HIZ2) and selection logic (SEL) that determines source routing per Table 1. Its clamp function fixes SCLO/SDAO maximum output voltage to CLP via internal circuitry, eliminating external clamp diodes.
It integrates three independent supply domains: V+ powers analog switches and HPIR inputs; VL powers HPD, SEL, and HPIRO logic; CLP sets the clamping reference. No power sequencing is required-V+, VL, and CLP may be applied in any order without latch-up or damage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range (V+) | 4.5V to 5.5V - matches HDMI/DVI 5V bus requirements and powers analog switch core |
| Clamp Reference (CLP) | 2V to 5.5V - sets maximum output voltage at SCLO/SDAO, directly tied to EDID EPROM supply |
| Logic Supply (VL) | 2V to 3.3V - matches MCU I/O voltage, powers HPD input and HPIRO output logic |
| On-Resistance (RON) | 10Ω (typ), 25Ω (max) - ensures minimal signal attenuation and voltage drop on DDC lines |
| Off-Capacitance | 20pF (typ) - preserves high-frequency integrity of DDC clock/data up to 40MHz bandwidth |
| ESD Protection | ±6kV HBM on SCL/SDA/HPDO/HPIR pins - eliminates need for external TVS on HDMI connector side |
| Operating Temperature | –40°C to +85°C - qualified for industrial-grade consumer electronics deployment |
Pinout & Package
The MAX4929EETP+ uses a 20-pin, 4mm × 4mm TQFN-EP package with exposed paddle (EP) connected to GND for thermal management. Pin numbering follows standard top-view orientation with Pin 1 at bottom-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| HPDO2 (Pin 19) | Hot-Plug Detect Output 2 | Translates HDMI source HPD logic to V+-compatible TTL level for host MCU monitoring |
| HPIR2 (Pin 20) | Hot-Plug Interrupt Request 2 | Asserts interrupt to MCU when HDMI2 plug-in event occurs; V+ referenced |
| SDA2 (Pin 1) | Serial Data Input 2 | Connects to HDMI2 DDC data line; V+ tolerant, routed through analog switch to SDAO |
| SCL2 (Pin 2) | Serial Clock Input 2 | Connects to HDMI2 DDC clock line; V+ tolerant, routed through analog switch to SCLO |
| HPDO1 (Pin 3) | Hot-Plug Detect Output 1 | Translates HDMI1 HPD logic to V+-compatible TTL level for host MCU monitoring |
| HPIR1 (Pin 4) | Hot-Plug Interrupt Request 1 | Asserts interrupt to MCU when HDMI1 plug-in event occurs; V+ referenced |
| V+ (Pin 9) | Positive Supply | Primary 5V rail powering analog switches and HPIR inputs; bypassed with ≥0.1µF ceramic cap |
| CLP (Pin 10) | Clamp-Voltage Reference | Defines max output voltage at SCLO/SDAO; must match EDID EPROM supply (e.g., 3.3V) |
| VL (Pin 11) | Logic Supply | Powers HPD, SEL, HPIRO logic; must match MCU I/O voltage (e.g., 3.3V or 2.5V) |
| SEL (Pin 12) | Select Input | Active-high logic control determining HDMI1 vs HDMI2 path; compatible with VL logic levels |
| SCLO (Pin 13) | SCL Mux Output | Switched SCL output routed to EDID EPROM; clamped to CLP voltage |
| SDAO (Pin 14) | SDA Mux Output | Switched SDA output routed to EDID EPROM; clamped to CLP voltage |
| HPIRO (Pin 15) | Hot-Plug Interrupt Request Output | Combines HPIR1/HPIR2 into single VL-compatible interrupt output for MCU |
| HPD (Pin 16) | Hot-Plug Detect Input | Accepts HDMI source HPD signal; logic level compatible with VL-supplied MCU |
| HIZ2 (Pin 17) | Enable Input 2 | Controls HDMI2 channel; low disables SDA2/SCL2 path and places outputs in high-Z |
| HIZ1 (Pin 18) | Enable Input 1 | Controls HDMI1 channel; low disables SDA1/SCL1 path and places outputs in high-Z |
| GND (Pin 19) | Ground | Common reference for all supplies and signals; EP must connect to this node |
| EXESD (Pin 1) | External ESD Discharge | Internal ESD protection node requiring 0.1µF capacitor to GND for full ±6kV HBM compliance |
| EP (Exposed Paddle) | Thermal Pad | Internally connected to GND; improves thermal resistance by >30% vs non-EP packages |
Key Features
| Feature | Design Value |
|---|---|
| Voltage clamping at SCLO/SDAO | Eliminates need for external clamp diodes by fixing output max to CLP voltage |
| Three independent supply domains | Enables simultaneous 5V HDMI bus, 3.3V MCU, and 3.3V EDID EPROM interfacing without level shifters |
| ±6kV HBM ESD on DDC pins | Meets HDMI compliance requirements without adding discrete TVS devices on PCB |
| Hot-plug detect translation | Converts HDMI source HPD (5V open-drain) to MCU-compatible logic levels on HPDO_ and HPIRO outputs |
| No power sequencing requirement | Allows V+, VL, and CLP to power up in any order-critical for robust system bring-up |
Applications
| HD Television Receivers | HD Monitors |
|---|---|
Use Scenario: Switching between two HDMI sources (e.g., Blu-ray player and game console) while preserving EDID communication with display. IC Role / Device Role / Timing Role: Translating 2:1 analog switch for DDC (SCL/SDA) lines, enabling dynamic EDID read/write and hot-plug detection without MCU intervention. Use Value: Prevents EDID corruption during source switching and ensures reliable plug-and-play detection at <33ns logic delay. | Use Scenario: Supporting dual-HDMI input selection in commercial HD monitors with embedded MCU-based display control. IC Role / Device Role / Timing Role: Level-translating HDMI DDC interface that bridges 5V HDMI connectors, 3.3V MCU, and 3.3V EDID EPROM. Use Value: Reduces BOM count by integrating clamping, translation, and ESD protection-no external resistors or diodes needed. |
| High-Resolution Computer Monitors | HDMI Audio/Video Switchers |
Use Scenario: Enabling seamless HDMI input switching in high-resolution desktop monitors with USB-C/DP Alt Mode fallback. IC Role / Device Role / Timing Role: Low-capacitance (20pF typ) DDC switch ensuring stable I²C communication up to 400kHz even with long trace lengths. Use Value: Maintains DDC signal integrity across 20cm PCB traces without signal degradation or retry failures. | Use Scenario: Building compact 2-input HDMI switch boxes with auto-detection and status LED feedback. IC Role / Device Role / Timing Role: Dual-channel hot-plug detector and interrupt aggregator (HPIRO) simplifying MCU GPIO usage. Use Value: Combines two HPIR inputs into one VL-compatible interrupt output-reducing required MCU pins by 50%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar HDMI DDC switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4928EETP+ | Single 2:1 switch with identical pinout, same V+/VL/CLP domains, but lacks HPIRO aggregation | Requires separate MCU GPIOs for each HPIR signal instead of combined HPIRO output | Choose when interrupt aggregation is unnecessary and cost minimization is priority |
| TS3USB30E | Single-supply (3V–4.3V), no CLP/VL separation; 8pF lower off-capacitance but no integrated clamp or ±6kV HBM | Requires external clamp diodes and TVS for HDMI compliance; limited to 3.3V systems | Choose only for low-voltage, non-HDMI-certified applications where BOM count is secondary to capacitance |
Compared with MAX4928EETP+, the MAX4929EETP+ adds HPIRO aggregation and identical functionality otherwise; compared with TS3USB30E, it delivers full HDMI-compliant clamping, triple-supply flexibility, and certified ±6kV ESD-enabling direct HDMI connector interface without support components.
Availability
The MAX4929EETP+ is available at Aetrix Electronics and suitable for HD television receivers, HD monitors, and high-resolution computer monitors requiring stable component supply, guaranteed lead-time fulfillment, and long-term lifecycle support.
Supply support for MAX4929EETP+ 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
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.
The MAX4929EETP+ belongs to Maxim's HDMI interface product line, engineered specifically to simplify DDC signal routing, hot-plug detection, and EDID protection in multi-source HDMI systems without external components.
FAQ
What is the primary function of the MAX4929EETP+ in an HDMI system?
The MAX4929EETP+ serves as a low-frequency 2:1 translating switch for HDMI/DVI DDC (I²C) lines-routing SCL/SDA signals between two HDMI sources and a single EDID EPROM while performing voltage clamping, level translation, and hot-plug detection. It enables seamless source switching without EDID corruption and eliminates need for external clamp diodes or level shifters in the MAX4929EETP+ design.
Does the MAX4929EETP+ require power supply sequencing?
No, the MAX4929EETP+ does not require power supply sequencing. Its V+, VL, and CLP supplies can be powered in any order without risk of latch-up or damage. This is enabled by internal BiCMOS architecture and independent supply domain isolation, making the MAX4929EETP+ robust during system power-up and hot-swap events.
How does the MAX4929EETP+ protect EDID EPROM from overvoltage?
The MAX4929EETP+ protects EDID EPROM using its integrated clamp function: SCLO and SDAO outputs are internally clamped to the CLP supply voltage. When CLP is tied to the EPROM's VCC (e.g., 3.3V), the MAX4929EETP+ ensures no voltage exceeding CLP appears at the EPROM pins-even if HDMI source drives 5V onto SCL/SDA lines-thereby preventing overvoltage damage without external components.
What is the purpose of the EXESD pin on the MAX4929EETP+?
EXESD is the dedicated external ESD discharge terminal on the MAX4929EETP+. It connects internally to the ESD protection network and must be decoupled to GND with a 0.1µF ceramic capacitor to achieve full ±6kV Human Body Model (HBM) ESD rating on all I/O pins. Omitting this capacitor reduces ESD robustness and violates HDMI compliance requirements for the MAX4929EETP+.
Can two MAX4929EETP+ devices be used together to create a 4:1 HDMI switch?
Yes, two MAX4929EETP+ devices can be configured as a 4:1 HDMI switch per Figure 6 in the datasheet. One device handles HDMI1/HDMI2 inputs, the other handles HDMI3/HDMI4; their SDAO/SCLO outputs feed a second-stage switch or MCU-controlled multiplexer. This configuration retains all MAX4929EETP+ features-including clamping, translation, and HPIRO aggregation-across all four inputs.
MAX4929EETP+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Switch
- Applications:
- Video Display
- Standards:
- -
- Control Interface:
- Serial
- Voltage - Supply:
- 3.0V ~ 5.5V
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 20-TQFN (4x4)
MAX4929EETP+T FAQ
1.How can I place an order for MAX4929EETP+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4929EETP+T 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 MAX4929EETP+T reliable?
The price and inventory of MAX4929EETP+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4929EETP+T is usually 5 days.
3.What payment methods are accepted for MAX4929EETP+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4929EETP+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4929EETP+T?
MAX4929EETP+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4929EETP+T 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 MAX4929EETP+T?
For technical support, including MAX4929EETP+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4929EETP+T requirements.
6.How does Aetrix verify that MAX4929EETP+T is sourced from the original manufacturer or authorized distributors?
All MAX4929EETP+T 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 MAX4929EETP+T meets industry standards.
7.What is the process for return or replacement of MAX4929EETP+T?
All MAX4929EETP+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4929EETP+T, 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 MAX4929EETP+T part is unused and in its original packaging.
Return procedure for MAX4929EETP+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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