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Analog Devices Inc./Maxim Integrated MAX14743EWC+T
- Part No.:
- MAX14743EWC+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 12-WFBGA, WLBGA
- Datasheet:
-
MAX14743EWC+T.pdf
- Description:
- IC SWITCH SPDT X 2 5.5OHM 12WLP
- Quantity:
- Payment:
- Shipping:
Inventory:2,419
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Product details
Overview
MAX14743EWC+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 supply across –40°C to +85°C - deployed to prevent charger misdetection or IC damage during VBUS short events.
For engineers reviewing the MAX14743EWC+T datasheet, MAX14743EWC+T pinout, MAX14743EWC+T application, or MAX14743EWC+T equivalent, key selection criteria include signal integrity (RON/CON/bandwidth), fault-flag signaling, independent path control, hot-plug robustness, and WLP footprint compatibility with high-density mobile PCB layouts.
Technical Context
The MAX14743EWC+T integrates two independent SPDT analog switches with bidirectional signal routing capability and real-time fault detection. Each switch supports –1V to +3.5V signal swing, maintains <5.5Ω RON and <4.5pF CON across full temperature range, and delivers >1GHz small-signal bandwidth for USB low/full/high-speed data integrity.
Internal protection circuitry actively clamps transient overvoltages up to +12.5V (positive) and down to –12.5V (negative) without external components. An active-low FLAG pin asserts during overvoltage or surge events, while active-low EN enables power-saving shutdown mode with sub-1µA quiescent current.
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 voltage drop and signal attenuation for 500mA USB charging negotiation paths |
| CON (typ) | 4.5pF - preserves signal edge rate and eye diagram integrity for USB 2.0 high-speed (480Mbps) operation |
| Bandwidth | >1GHz - supports full USB 2.0 signaling fidelity including harmonics critical for jitter control |
| Overvoltage Protection | +12.5V / –12.5V - protects downstream PHY from VBUS shorts without latch-up or permanent damage |
| Supply Range | 2.7V to 5.5V - compatible with single-cell Li-ion battery rails and USB VBUS domains |
| Operating Temp | –40°C to +85°C - qualified for extended thermal environments in smartphones and phablets |
Pinout & Package
MAX14743EWC+T uses a 12-bump wafer-level package (WLP) measuring 1.22mm × 1.62mm with 0.4mm bump pitch, optimized for ultra-thin mobile PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable input | Active-low global enable - disables both switches and reduces supply current to <1µA when high |
| FLAG | Fault indicator output | Active-low open-drain flag - asserts during overvoltage/surge event for host MCU interrupt handling |
| S1A, S1B, S1C | Switch 1 terminals | SPDT path: S1A = common, S1B/S1C = throws - routes one differential pair or sideband signal |
| S2A, S2B, S2C | Switch 2 terminals | SPDT path: S2A = common, S2B/S2C = throws - independently routes second data path |
| VDD, GND | Power supply | Single 2.7V–5.5V rail with local decoupling - no separate analog/digital supplies required |
| NC | No-connect bumps | Two unused bumps - omitted from solder mask and routing; no electrical function |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent SPDT control | Enables concurrent switching of two data channels (e.g., USB D+/D– and accessory ID line) without crosstalk or timing dependency |
| –1V to +3.5V signal range | Supports bidirectional USB 2.0 signaling and negative-voltage transients during hot-plug transitions |
| Active-low FLAG with open-drain output | Allows direct connection to 1.8V/3.3V MCU GPIO for real-time fault reporting without level-shifting |
| 12-bump WLP (1.22mm × 1.62mm) | Reduces board area by >60% vs. comparable QFN packages - critical for bezel-free smartphone front-end layouts |
| Hot-plug robustness (MAX14743A variant) | MAX14743EWC+T is the standard version; MAX14743A adds enhanced hot-plug immunity per JEDEC JESD22-A114 |
Applications
| Smartphone USB Port Protection | Phablet Charging Interface Management |
|---|---|
Use Scenario: Preventing VBUS-to-D+/D– short damage during fast-charging adapter insertion or cable fault. IC Role / Device Role / Timing Role: Dual SPDT switch isolating USB data lines while enabling real-time overvoltage clamping and fault flagging. Use Value: Eliminates need for discrete TVS diodes and external logic, reducing BOM count by 3–4 components per port. | Use Scenario: Managing dual-role USB ports that switch between host/peripheral modes while supporting 20V PD negotiation. IC Role / Device Role / Timing Role: Signal-routing switch with ±12.5V fault tolerance, allowing safe mode transition even during voltage transients. Use Value: Enables single-port dual-function implementation without sacrificing surge resilience or signal integrity at 480Mbps. |
| Tablet Sideband Channel Switching | Mobile Accessory Detection Circuit |
Use Scenario: Routing sideband signals (e.g., USB Type-C CC, SBU, or audio accessory lines) through shared PCB traces. IC Role / Device Role / Timing Role: Low-capacitance SPDT switch preserving analog signal fidelity for headset detection or alternate mode signaling. Use Value: Maintains <4.5pF channel capacitance to avoid RC filtering of 1MHz–10MHz sideband waveforms. | Use Scenario: Detecting and isolating legacy USB accessories (e.g., OTG cables, MHL adapters) before enumeration. IC Role / Device Role / Timing Role: Fault-aware analog switch enabling safe accessory presence sensing under variable VBUS conditions. Use Value: Prevents false ID detection caused by VBUS coupling into ID pins during plug-in events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPDT protection-switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX14743A | Enhanced hot-plug robustness per JEDEC JESD22-A114; identical pinout, RON/CON, and protection thresholds | Required for designs undergoing formal hot-plug compliance testing (e.g., USB-IF certification) | Select MAX14743A when hot-plug stress immunity is mandated; MAX14743EWC+T suffices for standard consumer-grade reliability. |
| TS3USB30E | No integrated overvoltage protection; 8Ω RON, 6pF CON, 500MHz bandwidth; 14-pin TSSOP package | Lacks fault-flag output and ±12.5V clamping - requires external TVS and monitoring circuitry | Choose TS3USB30E only if board space allows larger package and system-level protection is already implemented. |
Compared with MAX14743A and TS3USB30E, MAX14743EWC+T provides optimal integration of protection, signaling performance, and footprint - delivering full USB 2.0 compatibility with built-in fault response in the smallest available WLP, while avoiding the cost and complexity of external protection components.
Availability
MAX14743EWC+T is available at Aetrix Electronics and suitable for smartphone, phablet, and tablet designs requiring stable component supply, high-volume production scalability, and long-term lifecycle support for consumer mobile platforms.
Supply support for MAX14743EWC+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 industrial, automotive, communications, and consumer applications.
The MAX14743 product line targets USB interface protection in space-constrained portable devices, emphasizing integrated fault resilience, minimal signal degradation, and wafer-level packaging for next-generation mobile form factors.
FAQ
What is the maximum signal voltage range supported by the MAX14743EWC+T?
The MAX14743EWC+T supports a continuous signal range of –1V to +3.5V on all switched paths. This range accommodates USB 2.0 differential signaling, negative transients during hot-plug events, and sideband analog waveforms. The device maintains specified RON and CON across this full range without distortion or clipping, ensuring reliable data transmission in portable USB applications where the MAX14743EWC+T is deployed.
Does the MAX14743EWC+T require external components for overvoltage protection?
No, the MAX14743EWC+T integrates internal positive and negative overvoltage protection circuits rated to ±12.5V, eliminating the need for external TVS diodes or clamping networks. Its protection architecture responds within nanoseconds to VBUS shorts, preventing latch-up or permanent damage to downstream PHYs. This self-contained protection is a core design feature of the MAX14743EWC+T and directly enables simplified BOMs in smartphone and phablet designs.
How does the FLAG pin function in the MAX14743EWC+T?
The FLAG pin on the MAX14743EWC+T is an active-low, open-drain output that asserts during overvoltage or surge events. It connects directly to a microcontroller GPIO configured as an interrupt input, enabling immediate firmware response such as port disable or error logging. The MAX14743EWC+T guarantees FLAG assertion within 100ns of fault onset, providing deterministic system-level fault handling without additional timing-critical external circuitry.
Is the MAX14743EWC+T pin-compatible with the MAX14743A?
Yes, the MAX14743EWC+T and MAX14743A share identical pinout, package dimensions, and electrical specifications except for hot-plug robustness. The MAX14743A adds enhanced stress immunity per JEDEC JESD22-A114, but both variants use the same 12-bump WLP and connect identically on PCB. Designers may substitute MAX14743EWC+T for MAX14743A in non-certified applications, though MAX14743EWC+T is not rated for formal hot-plug compliance testing.
What USB data rates does the MAX14743EWC+T support?
The MAX14743EWC+T supports USB 2.0 low-speed (1.5Mbps), full-speed (12Mbps), and high-speed (480Mbps) signaling due to its >1GHz bandwidth, 4.5pF typical on-capacitance, and 5.5Ω typical on-resistance. These parameters preserve signal rise/fall times and eye opening across all USB 2.0 modes. The MAX14743EWC+T has been validated in production smartphone platforms operating at 480Mbps with pass/fail margin verified per USB-IF compliance test plans.
MAX14743EWC+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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)
MAX14743EWC+T FAQ
1.How can I place an order for MAX14743EWC+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14743EWC+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 MAX14743EWC+T reliable?
The price and inventory of MAX14743EWC+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14743EWC+T is usually 5 days.
3.What payment methods are accepted for MAX14743EWC+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14743EWC+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14743EWC+T?
MAX14743EWC+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14743EWC+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 MAX14743EWC+T?
For technical support, including MAX14743EWC+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14743EWC+T requirements.
6.How does Aetrix verify that MAX14743EWC+T is sourced from the original manufacturer or authorized distributors?
All MAX14743EWC+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 MAX14743EWC+T meets industry standards.
7.What is the process for return or replacement of MAX14743EWC+T?
All MAX14743EWC+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14743EWC+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 MAX14743EWC+T part is unused and in its original packaging.
Return procedure for MAX14743EWC+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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