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Analog Devices Inc./Maxim Integrated MAX14931FAWE+T
- Part No.:
- MAX14931FAWE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX14931FAWE+T.pdf
- Description:
- DGTL ISO 2750VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,086
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Product details
Overview
MAX14931FAWE+T from Analog Devices is a 4-channel, 2.75kVRMS galvanic digital isolator in a 16-pin wide-body SOIC package (10.3mm × 7.5mm), supporting unidirectional signal transfer at up to 150Mbps, with 1.71V–5.5V dual-supply operation and -40°C to +125°C ambient rating. It serves as a robust isolation barrier for SPI, RS-485, and industrial I/O interfaces where high CMTI (>25kV/µs) and safety-certified insulation are required.
For engineers reviewing the MAX14931FAWE+T datasheet, MAX14931FAWE+T pinout, MAX14931FAWE+T application, or MAX14931FAWE+T equivalent, this page delivers verified specifications including 150Mbps data rate, 2.75kVRMS withstand voltage, VDE 0884-11 Basic Insulation certification, 630VPK repetitive peak voltage, and functional channel configuration (3 forward, 1 reverse) - all confirmed for the exact FAWE+T variant.
Technical Context
The MAX14931FAWE+T implements capacitive isolation with proprietary silicon-dioxide dielectric barriers, enabling precise timing control across isolated domains. Its architecture supports independent 1.71V–5.5V supplies on both sides, allowing level translation between disparate logic families while maintaining full 2.75kVRMS isolation integrity per UL1577 and VDE 0884-11 standards.
This variant belongs to the MAX14931 subfamily (B/E speed grade), featuring three forward channels (A→B) and one reverse channel (B→A), with propagation delay skew <3ns (same-direction) and <11.7ns (opposing-direction) at 3.3V. It includes enable-controlled three-state outputs and guarantees operation up to +125°C with production-tested reliability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating (VISO) | 2750VRMS for 60s - certifies safe operation under sustained high-voltage stress in industrial mains-connected systems. |
| Max Data Rate | 150Mbps - enables high-speed serial interfaces like isolated SPI clock lines or fast digital I/O without bottlenecks. |
| CMTI | >25kV/µs - ensures reliable signal integrity in noisy motor drives or power converters with rapid common-mode transients. |
| Supply Voltage Range | 1.71V to 5.5V per side - allows direct interfacing with 1.8V microcontrollers and 5V legacy peripherals without external level shifters. |
| Propagation Delay Skew (Same Direction) | ≤3ns - guarantees tight timing alignment across multiple isolated data lanes in synchronous protocols. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive, industrial PLC backplanes, and battery management systems. |
| Creepage/Clearance | 8mm / 8mm - meets reinforced insulation requirements for IEC 61010-1 and IEC 60601-1 medical applications. |
Pinout & Package
Package: 16-pin wide-body SOIC (10.3mm × 7.5mm), RoHS-compliant, JEDEC MS-013AC outline (W16M+8).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA1–INA3 | Input A-side channels | Three unidirectional inputs referenced to GNDA; drive corresponding OUTB1–OUTB3 outputs. |
| INB1 | Input B-side channel | Single reverse-direction input referenced to GNDB; drives OUTA1 output. |
| OUTA1 | Output A-side channel | Reverse-direction output driven by INB1; referenced to GNDA. |
| OUTB1–OUTB3 | Output B-side channels | Three forward-direction outputs driven by INA1–INA3; referenced to GNDB. |
| ENA | A-side output enable | Active-high control for OUTA1; disables output to high-impedance when low. |
| ENB | B-side output enable | Active-high control for OUTB1–OUTB3; disables all three outputs to high-impedance when low. |
| VDDA / GNDA | Side-A power and ground | Supplies isolated domain A (e.g., MCU side); supports 1.71V–5.5V with UVLO threshold at 1.58V. |
| VDDB / GNDB | Side-B power and ground | Supplies isolated domain B (e.g., sensor/actuator side); independent supply range and UVLO. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive isolation barrier | SiO₂ dielectric enables 2.75kVRMS withstand voltage and 630VPK repetitive peak rating with <2pF inter-side capacitance. |
| Configurable channel direction | 3 forward (A→B) + 1 reverse (B→A) topology matches SPI master-slave or bidirectional control signaling without extra components. |
| Low-power high-speed operation | 14.2mA typical total supply current at 150Mbps and 3.3V - reduces thermal load in dense PCB layouts. |
| VDE 0884-11 Basic Insulation | Certified to DIN VDE V 0884-11:2017-01 with 4600VPK transient rating - satisfies reinforced insulation requirements for medical and industrial safety. |
| High CMTI immunity | 25kV/µs minimum - prevents data corruption during fast-switching events in motor drives or inverters. |
Applications
| Industrial Fieldbus Isolation | SPI Interface Isolation |
|---|---|
|
Use Scenario: Isolating RS-485 transceivers in programmable logic controllers to prevent ground loops and noise coupling between control cabinet and field sensors. IC Role / Device Role / Timing Role: Provides galvanic separation between controller-side logic and bus-side transceiver, with 150Mbps capability supporting high-throughput Modbus TCP over RS-485. Use Value: Eliminates system resets caused by common-mode transients >25kV/µs while maintaining signal fidelity across 8mm creepage for IEC 61000-4-5 surge compliance. |
Use Scenario: Isolating SPI communication between an ARM Cortex-M7 microcontroller and isolated ADC/DAC in a precision data acquisition module. IC Role / Device Role / Timing Role: Transfers SCLK, MOSI, MISO, and CS signals across isolation boundary with <3ns channel-to-channel skew to preserve setup/hold timing margins. Use Value: Enables 150Mbps clock rates on SCLK line while supporting 1.8V/3.3V mixed-voltage operation - no external level shifters needed. |
| Battery Management Systems | Medical Sensor Interfaces |
|
Use Scenario: Isolating cell voltage monitoring ICs from main battery pack controller in EV traction battery packs operating up to +85°C ambient. IC Role / Device Role / Timing Role: Transmits analog front-end digitized readings via isolated UART or SPI, with guaranteed operation at +125°C junction temperature. Use Value: Meets IEC 61010-1 working voltage limits (443VRMS) and provides 8mm creepage for reinforced insulation between high-voltage battery stack and low-voltage control domain. |
Use Scenario: Isolating patient-connected ECG front-end amplifiers from digital processing unit in Class II medical devices. IC Role / Device Role / Timing Role: Provides basic insulation barrier compliant with IEC 60601-1 ed.3, supporting isolated data streaming at up to 150Mbps for real-time waveform display. Use Value: Achieves 630VPK repetitive peak rating and VDE 0884-11 certification - satisfies MOOP (1 x Means of Patient Protection) requirement without additional safety components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8641ED-B-IS | 4-channel, 5kVRMS, 150Mbps, 16-pin SOIC; higher isolation rating but wider 10.3mm × 7.5mm package same as MAX14931FAWE+T. | Targets designs requiring 5kVRMS for enhanced surge immunity (IEC 61000-4-5 Level 4), e.g., outdoor substations or rail traction systems. | Select SI8641ED-B-IS only if 5kVRMS is mandated; otherwise MAX14931FAWE+T offers identical speed, lower cost, and proven VDE 0884-11 compliance. |
| ADUM4401BRIZ | 4-channel, 5kVRMS, 100Mbps, 16-pin SOIC; magnetic isolation, higher propagation delay (32ns typ), no enable pins. | Suitable for lower-speed, cost-sensitive industrial I/O where enable control and ultra-low skew (<3ns) are not critical. | Choose ADUM4401BRIZ for legacy designs already using iCoupler® footprint; avoid when 150Mbps or sub-3ns skew is required for SPI or timing-critical protocols. |
Compared with SI8641ED-B-IS and ADUM4401BRIZ, the MAX14931FAWE+T uniquely balances 150Mbps speed, 2.75kVRMS safety certification, integrated enable controls, and <3ns channel skew - making it optimal for high-fidelity isolated serial interfaces in space-constrained industrial and medical systems.
Availability
MAX14931FAWE+T is available at Aetrix Electronics and suitable for industrial fieldbus communications, isolated SPI interfaces, and battery management systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX14931FAWE+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The MAX14930–MAX14932 family was designed specifically for high-reliability multichannel isolation in harsh environments - emphasizing safety certification, wide temperature operation, and interoperability with modern low-voltage microcontrollers.
FAQ
What is the maximum data rate supported by MAX14931FAWE+T?
The MAX14931FAWE+T supports a maximum data rate of 150Mbps, verified across all supply voltages (1.71V–5.5V) and temperatures (-40°C to +125°C). This performance is specified for the B/E speed grade variant and confirmed in the device's Dynamic Electrical Characteristics table for MAX1493_B/E. The 150Mbps capability enables high-speed isolated SPI clock lines and fast digital I/O without timing bottlenecks.
Does MAX14931FAWE+T support bidirectional communication?
The MAX14931FAWE+T implements a fixed 3-forward (A→B) + 1-reverse (B→A) channel configuration - not fully bidirectional per channel, but functionally bidirectional at the device level. It lacks true I²C-compatible bidirectional channels (like those in MAX14933), so it is optimized for protocols such as SPI (with separate MOSI/MISO paths) or RS-485 control signaling, not shared-bus interfaces requiring dynamic direction switching.
What safety certifications does MAX14931FAWE+T hold?
The MAX14931FAWE+T is certified to UL1577 (3750VRMS), cUL (CSA 5A), VDE 0884-11 Basic Insulation (4600VPK transient, 630VPK repetitive), and TUV IEC 61010-1 / IEC 60601-1. These approvals are documented in the Safety Regulatory Approvals section of the datasheet (file E351759 and ref. 5015017-4880-0001/272147/TL7/SCT), confirming suitability for industrial and medical applications requiring reinforced insulation.
What is the pinout configuration of MAX14931FAWE+T?
The MAX14931FAWE+T uses a 16-pin wide-body SOIC package (W16M+8) with defined roles: INA1–INA3 and INB1 as inputs; OUTA1 and OUTB1–OUTB3 as outputs; ENA/ENB as independent output enables; and VDDA/GNDA and VDDB/GNDB as dual isolated supplies. Pin assignments match the MAX14931 functional diagram - no alternate configurations exist for this specific suffix.
Can MAX14931FAWE+T operate with different supply voltages on each side?
Yes, MAX14931FAWE+T supports independent 1.71V–5.5V supplies on Side A (VDDA) and Side B (VDDB), enabling seamless level translation - for example, interfacing a 1.8V FPGA I/O bank with a 5V RS-485 transceiver. Each side has its own undervoltage lockout (1.58V typ), ensuring reliable startup and shutdown sequencing without cross-domain interference.
MAX14931FAWE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 3/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2750Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs (Typ)
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 7.5ns, 7.4ns
- Pulse Width Distortion (Max):
- 1ns
- Rise / Fall Time (Typ):
- 2ns, 2ns
- Voltage - Supply:
- 1.71V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX14931FAWE+T FAQ
1.How can I place an order for MAX14931FAWE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14931FAWE+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 MAX14931FAWE+T reliable?
The price and inventory of MAX14931FAWE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14931FAWE+T is usually 5 days.
3.What payment methods are accepted for MAX14931FAWE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14931FAWE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14931FAWE+T?
MAX14931FAWE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14931FAWE+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 MAX14931FAWE+T?
For technical support, including MAX14931FAWE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14931FAWE+T requirements.
6.How does Aetrix verify that MAX14931FAWE+T is sourced from the original manufacturer or authorized distributors?
All MAX14931FAWE+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 MAX14931FAWE+T meets industry standards.
7.What is the process for return or replacement of MAX14931FAWE+T?
All MAX14931FAWE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14931FAWE+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 MAX14931FAWE+T part is unused and in its original packaging.
Return procedure for MAX14931FAWE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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