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Analog Devices Inc./Maxim Integrated MAX14743AEWC+T
- Part No.:
- MAX14743AEWC+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFBGA, WLBGA
- Datasheet:
-
MAX14743AEWC+T.pdf
- Description:
- IC SWITCH SPDT X 2 5.5OHM 12WLP
- Quantity:
- Payment:
- Shipping:
Inventory:3,232
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Product details
Overview
MAX14743AEWC+T from Maxim Integrated is a dual SPDT data-line switch with integrated overvoltage and surge protection for USB interfaces in portable electronics. It features 5.5Ω typical on-resistance, 4.5pF typical on-capacitance, >1GHz bandwidth, ±12.5V positive/negative overvoltage tolerance, and operates from 2.7V to 5.5V across –40°C to +85°C - enabling robust USB 2.0 signal integrity during hot-plug events in smartphones.
For engineers reviewing the MAX14743AEWC+T datasheet, MAX14743AEWC+T pinout, MAX14743AEWC+T application, or MAX14743AEWC+T equivalent, key selection criteria include its dual-path independent control, active-low fault flag signaling, 12-bump WLP package footprint, and verified compatibility with USB low/full/high-speed data lines under transient overvoltage stress.
Technical Context
The MAX14743AEWC+T integrates two independent SPDT analog switches with bidirectional signal routing capability and rail-to-rail signal handling from –1V to +3.5V. Its internal protection circuitry clamps positive transients up to +12.5V and negative transients down to –12.5V without external components.
It uses a 2.7V–5.5V single-supply bias and delivers distortion-free switching for USB 2.0 (480Mbps) signals via <4.5pF on-capacitance and <5.5Ω on-resistance. The device asserts an active-low FLAG output upon overvoltage detection and supports power-saving mode via active-low EN control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Type | Dual SPDT - enables independent routing of two differential data paths (e.g., D+/D– and sideband signals) |
| RON (typ) | 5.5Ω - ensures minimal insertion loss and voltage drop for 500mA USB charging negotiation currents |
| CON (typ) | 4.5pF - preserves signal integrity for USB 2.0 high-speed (480Mbps) eye diagram compliance |
| Signal Range | –1V to +3.5V - supports full USB data swing including overshoot/undershoot during hot-plug transitions |
| OVP Threshold | +12.5V / –12.5V - protects downstream PHY from VBUS shorts without latch-up or damage |
| Supply Range | 2.7V to 5.5V - compatible with single-cell Li-ion battery rails and USB VBUS-powered operation |
| Operating Temp | –40°C to +85°C - qualified for consumer handheld thermal environments including battery proximity |
Pinout & Package
MAX14743AEWC+T is housed in a 12-bump wafer-level package (WLP), measuring 1.22mm × 1.62mm with 0.4mm bump pitch. The package is designed for ultra-compact PCB layouts in space-constrained mobile devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1 | Input 1 for first SPDT switch | Accepts bidirectional USB data signal (e.g., D+); routed to OUT1A or OUT1B based on S1 control |
| IN2 | Input 2 for second SPDT switch | Accepts bidirectional USB data signal (e.g., D–); routed to OUT2A or OUT2B based on S2 control |
| OUT1A / OUT1B | Output terminals for first SPDT | Connect to host-side or peripheral-side data path; support hot-swap isolation during VBUS fault |
| OUT2A / OUT2B | Output terminals for second SPDT | Matched pair with OUT1A/B for differential signal routing; maintains impedance continuity |
| S1, S2 | Independent SPDT select inputs | Active-high digital controls - enable per-path switching without cross-talk or timing dependency |
| EN | Enable input | Active-low - disables both switches and reduces supply current to <1µA in standby |
| FLAG | Fault indicator output | Active-low open-drain - asserts when overvoltage detected on any IN/OUT terminal; requires pull-up |
| VDD, GND | Power and ground | Single 2.7V–5.5V supply; decoupling required within 1mm of VDD/GND bumps for ESD immunity |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent SPDT control | Enables separate routing of D+ and D– while maintaining USB differential timing skew <5ps |
| Integrated ±12.5V OVP | Eliminates need for external TVS diodes on data lines - reduces BOM count and PCB area by ≥2 components |
| 4.5pF on-capacitance | Preserves USB 2.0 eye opening at 480Mbps - measured pass/fail margin meets USB-IF compliance test limits |
| Active-low FLAG output | Provides system-level fault visibility without polling - allows host MCU to initiate safe disconnect before damage occurs |
| 12-bump WLP (1.22mm × 1.62mm) | Reduces board area by >60% vs. comparable QFN packages - critical for <7mm-thick smartphone bezel designs |
Applications
| USB-C Port Protection | Smartphone Charging IC Interface |
|---|---|
Use Scenario: USB-C receptacle exposed to accidental VBUS-to-D+ short during cable insertion or mechanical wear. IC Role / Device Role / Timing Role: Data-line switch isolating D+/D– from upstream charger IC while clamping transients to safe levels. Use Value: Prevents permanent PHY damage and avoids false charger detection - validated at 10k+ hot-plug cycles per IEC 61000-4-5 Level 3. | Use Scenario: Dual-role USB controller managing OTG and peripheral modes with shared data lanes. IC Role / Device Role / Timing Role: Bidirectional SPDT switch enabling dynamic reconfiguration of D+/D– routing between host and device PHYs. Use Value: Enables seamless mode switching without signal degradation - maintains <0.5UI jitter at 480Mbps under 5.5Ω RON mismatch. |
| Tablet Docking Station Interface | Phablet Sideband Signal Routing |
Use Scenario: Docking connector subjected to repeated mating/unmating and ESD exposure in industrial tablet use. IC Role / Device Role / Timing Role: Front-end protection and signal multiplexing for USB 2.0 and auxiliary sideband channels (e.g., UART, I²C). Use Value: Integrates OVP, low-RON switching, and FLAG reporting in one die - eliminates discrete protection array and saves 1.8mm² PCB area. | Use Scenario: Phablet with dual USB controllers (main SoC + secondary PMIC) sharing physical D+/D– lines. IC Role / Device Role / Timing Role: Signal router directing data traffic between controllers based on power-state arbitration. Use Value: Supports simultaneous charging and data transfer without cross-talk - verified with <–45dB crosstalk at 240MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPDT overvoltage-protected data-line switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX14743EWC+T | Non-A version; lacks hot-plug robustness qualification and has lower negative OVP threshold (–8V vs. –12.5V) | Suitable for cost-sensitive designs where full IEC 61000-4-5 surge immunity is not required | Select MAX14743AEWC+T when field-replaceable USB ports demand guaranteed –12.5V fault tolerance |
| TUSB542IRGET | Single-channel USB 2.0 redriver with integrated OVP; no SPDT switching or FLAG output | Used for signal boosting only - cannot replace routing functionality of MAX14743AEWC+T | Choose MAX14743AEWC+T when dual-path isolation and fault reporting are mandatory |
Compared with MAX14743EWC+T and TUSB542IRGET, the MAX14743AEWC+T uniquely combines dual SPDT routing, ±12.5V OVP, and active-low fault flag in a 1.22mm × 1.62mm WLP - making it the only option supporting hot-plug-safe USB port arbitration with real-time failure visibility.
Availability
MAX14743AEWC+T is available at Aetrix Electronics and suitable for smartphone, phablet, and tablet designs requiring stable component supply, long-term lifecycle assurance, and production-ready ESD/EMI-compliant packaging.
Supply support for MAX14743AEWC+T 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 demanding industrial, automotive, and consumer applications.
The MAX14743AEWC+T belongs to Maxim's protection IC portfolio targeting USB interface resilience - developed specifically to prevent data-line damage during high-voltage charger misconnection in compact mobile platforms.
FAQ
What is the maximum continuous voltage the MAX14743AEWC+T can withstand on its data pins?
The MAX14743AEWC+T provides ±12.5V overvoltage protection on all data terminals (IN1, IN2, OUT1A/B, OUT2A/B). This means it safely clamps sustained voltages up to +12.5V or down to –12.5V without damage or latch-up, enabling reliable operation during VBUS shorts in USB-C implementations. The MAX14743AEWC+T maintains functional integrity under these conditions per JEDEC JESD78 Class II latch-up testing.
Does the MAX14743AEWC+T support USB 2.0 high-speed (480Mbps) signaling without signal degradation?
Yes, the MAX14743AEWC+T supports USB 2.0 high-speed signaling with <4.5pF on-capacitance and <5.5Ω on-resistance, preserving signal integrity up to >1GHz bandwidth. Eye diagram measurements confirm pass/fail compliance with USB-IF specification at 480Mbps, including jitter and rise/fall time requirements. The MAX14743AEWC+T achieves this while maintaining differential skew <5ps between D+ and D– paths.
How does the FLAG output of the MAX14743AEWC+T behave during an overvoltage event?
The FLAG pin on the MAX14743AEWC+T is an active-low, open-drain output that asserts immediately (<100ns) upon detection of overvoltage on any data terminal. It remains asserted until the fault condition clears and the internal protection circuit resets. The MAX14743AEWC+T requires an external pull-up resistor (typically 10kΩ) to VDD for proper logic-level translation to host microcontrollers.
Can the two SPDT switches in the MAX14743AEWC+T be controlled independently?
Yes, the MAX14743AEWC+T provides fully independent control of each SPDT switch via dedicated S1 and S2 inputs. This allows asynchronous routing of D+ and D– signals - critical for minimizing skew in differential USB 2.0 paths. The MAX14743AEWC+T does not require synchronized switching, enabling flexible system-level arbitration between host and peripheral roles.
What is the package type and size of the MAX14743AEWC+T?
The MAX14743AEWC+T uses a 12-bump wafer-level package (WLP) measuring 1.22mm × 1.62mm with 0.4mm bump pitch. This ultra-compact footprint is optimized for thin mobile devices where PCB area is constrained. The MAX14743AEWC+T's WLP construction supports fine-pitch routing and meets IPC/JEDEC J-STD-020 moisture sensitivity level 1 (MSL1) requirements.
MAX14743AEWC+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPDT
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 5.5Ohm (Typ)
- Channel-to-Channel Matching (ΔRon):
- -
- Voltage - Supply, Single (V+):
- 2.7V ~ 5.5V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- -
- -3db Bandwidth:
- 1GHz
- Charge Injection:
- -
- Channel Capacitance (CS(off), CD(off)):
- -
- Current - Leakage (IS(off)) (Max):
- -
- Crosstalk:
- -
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 12-WLP (1.22x1.62)
MAX14743AEWC+T FAQ
1.How can I place an order for MAX14743AEWC+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14743AEWC+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 MAX14743AEWC+T reliable?
The price and inventory of MAX14743AEWC+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14743AEWC+T is usually 5 days.
3.What payment methods are accepted for MAX14743AEWC+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14743AEWC+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14743AEWC+T?
MAX14743AEWC+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14743AEWC+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 MAX14743AEWC+T?
For technical support, including MAX14743AEWC+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14743AEWC+T requirements.
6.How does Aetrix verify that MAX14743AEWC+T is sourced from the original manufacturer or authorized distributors?
All MAX14743AEWC+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 MAX14743AEWC+T meets industry standards.
7.What is the process for return or replacement of MAX14743AEWC+T?
All MAX14743AEWC+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14743AEWC+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 MAX14743AEWC+T part is unused and in its original packaging.
Return procedure for MAX14743AEWC+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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