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Analog Devices Inc./Maxim Integrated MAX14931EAWE+T
- Part No.:
- MAX14931EAWE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX14931EAWE+T.pdf
- Description:
- DGTL ISO 2750VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:950
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Product details
Overview
MAX14931EAWE+T from Analog Devices is a 4-channel, unidirectional digital isolator with 2.75kVRMS galvanic isolation, 150Mbps maximum data rate, and independent 1.71V–5.5V dual-supply operation across isolated domains. It features default-low output configuration, 6.67ns minimum pulse width, and operates from –40°C to +125°C - enabling robust signal isolation in industrial fieldbus and battery management systems.
For engineers reviewing the MAX14931EAWE+T datasheet, MAX14931EAWE+T pinout, MAX14931EAWE+T application, or MAX14931EAWE+T equivalent, this device delivers high-speed, low-jitter channel-to-channel isolation with VDE-certified basic insulation, CMTI ≥25kV/µs, and compatibility with SPI/RS-485 level translation in space-constrained wide-body SOIC packages.
Technical Context
The MAX14931EAWE+T implements capacitive isolation using Analog Devices' proprietary process, supporting unidirectional channel mapping (A→B only) with separate enable controls per side (ENA/ENB). Its architecture enables precise timing control via sub-8ns propagation delay (tPLH/tPHL), <1ps typical pulse-width distortion at 5V, and guaranteed operation up to 150Mbps with 25kV/µs common-mode transient immunity.
It supports asymmetric supply configurations (e.g., 1.8V on Side A, 3.3V on Side B), includes undervoltage lockout (1.45V–1.71V threshold), and integrates input hysteresis (410mV) for noise rejection. The device is rated for continuous 443VRMS working voltage and withstands ±10kV surge per IEC 61000-4-5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2.75kVRMS for 60s (UL/VDE certified); enables safety-critical industrial and medical system compliance |
| Max Data Rate | 150Mbps - supports high-speed SPI clocking and real-time sensor data isolation without bottlenecks |
| Propagation Delay | 4.9–8.2ns (tPHL/tPLH @ 1.71–5.5V) - ensures tight timing alignment in synchronous interfaces |
| CMTI | ≥25kV/µs - maintains signal integrity in noisy motor drives and power converters |
| Supply Range | 1.71V–5.5V per side - allows direct interfacing with legacy 5V microcontrollers and modern 1.8V FPGAs |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| Package | 16-pin wide-body SOIC (10.3mm × 7.5mm, 8mm creepage/clearance) - meets reinforced insulation spacing requirements |
Pinout & Package
MAX14931EAWE+T is housed in a 16-pin wide-body SOIC package (outline 21-0042, RoHS-compliant W16M+8 code) with 8mm creepage and clearance, optimized for high-voltage isolation integrity and PCB-level safety spacing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA1–INA4 | Side A digital inputs | Accept logic signals referenced to GNDA; support 0.7×VDDA VIH threshold for rail-to-rail compatibility |
| INB1–INB4 | Side B digital inputs | Accept logic signals referenced to GNDB; enable bidirectional system control when paired with other isolators |
| OUTA1–OUTA4 | Side A isolated outputs | Drive downstream logic on primary side; default-low state ensures safe reset during power-up |
| OUTB1–OUTB4 | Side B isolated outputs | Deliver isolated signals to secondary-side peripherals; 4mA drive strength supports 15pF loads at 150Mbps |
| VDDA / VDDB | Independent power supplies | Enable level-shifting between disparate voltage domains (e.g., 1.8V FPGA ↔ 5V MCU) |
| GNDA / GNDB | Isolated ground references | Physically separate return paths prevent ground-loop noise coupling across isolation barrier |
| ENA / ENB | Output enable controls | Tri-state outputs when deasserted; tEN = 5.1ns (max) ensures fast enable/disable transitions |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive isolation barrier | Proprietary dielectric stack enabling 2.75kVRMS rating with <2pF inter-side capacitance for minimal signal coupling |
| High-speed timing performance | 150Mbps data rate with 6.67ns min pulse width and <1ns pulse-width distortion ensures clean eye diagrams in serial links |
| Robust noise immunity | 25kV/µs CMTI and 410mV input hysteresis suppress EMI-induced glitches in motor drive and power supply environments |
| Dual-supply flexibility | Independent 1.71V–5.5V rails per side allow seamless integration into mixed-voltage systems without external level shifters |
| Safety certification | VDE 0884-11 Basic Insulation, UL 1577, and IEC 61000-4-5 ±10kV surge compliance reduce system-level safety validation effort |
Applications
| Industrial Fieldbus Isolation | SPI Interface Isolation |
|---|---|
Use Scenario: Isolating RS-485 transceivers in PLC backplanes exposed to 2kV surges and 100V common-mode noise. IC Role / Device Role / Timing Role: Unidirectional signal translator between controller and bus PHY, providing galvanic separation and timing-aligned data transfer. Use Value: Prevents ground-loop damage while maintaining 150Mbps throughput for real-time motion control loop updates. |
Use Scenario: Isolating high-speed SPI clock and data lines between an MCU and isolated ADC in battery monitoring units. IC Role / Device Role / Timing Role: Four-channel A→B isolator preserving SCLK/SDO/SDI/CS timing integrity across domains. Use Value: Enables 10MHz+ SPI operation with <8ns skew, eliminating setup/hold violations in multi-cell BMS designs. |
| Motor Drive Control | Medical Sensor Interface |
Use Scenario: Isolating gate driver enable signals and fault feedback in IGBT-based inverters operating at 600V DC bus. IC Role / Device Role / Timing Role: Safe, fast-enable isolation of PWM control and overcurrent signals with <6ns enable-to-valid latency. Use Value: Guarantees sub-10ns response to fault conditions, meeting IEC 61800-5-2 functional safety timing constraints. |
Use Scenario: Isolating analog front-end sensor data paths in portable ECG monitors requiring 630VPK reinforced insulation. IC Role / Device Role / Timing Role: Low-jitter, low-capacitance isolator preserving signal fidelity for 16-bit ADC sampling clocks. Use Value: Achieves <140ps peak jitter at 5V supply, ensuring SNR >90dB in clinical-grade biosignal acquisition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISO6741QDWR | 4-channel, 5000VRMS, 50Mbps max rate, 16-pin SOIC (narrow body), 3.3V-only supply | Higher isolation rating but lower speed; suited for HV power supply monitoring vs. high-speed comms | Select when >4kVRMS isolation is mandatory and data rate ≤50Mbps suffices |
| ADUM2401BRWZ | 4-channel, 2500VRMS, 25Mbps max rate, 16-pin SOIC (wide body), 3.0–5.5V supply | Lower isolation and speed; older magnetic coupling architecture with higher power consumption | Choose for cost-sensitive legacy designs where 25Mbps and 2.5kVRMS meet safety requirements |
Compared with ISO6741QDWR and ADUM2401BRWZ, the MAX14931EAWE+T uniquely balances 150Mbps speed, 2.75kVRMS isolation, and dual-supply flexibility in a wide-body SOIC - making it optimal for next-generation industrial comms where timing, safety, and voltage interoperability converge.
Availability
MAX14931EAWE+T is available at Aetrix Electronics and suitable for industrial automation, battery management systems, and medical sensor interfaces requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX14931EAWE+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-speed, high-isolation digital signal transfer in harsh environments - emphasizing timing precision, CMTI resilience, and safety certification for industrial and medical applications.
FAQ
What is the maximum data rate supported by the MAX14931EAWE+T?
The MAX14931EAWE+T supports a maximum data rate of 150Mbps, verified across its full 1.71V–5.5V supply range and –40°C to +125°C temperature range. This enables high-speed SPI, isolated sensor interfaces, and real-time control loops without timing bottlenecks. Performance is guaranteed by design and validated in production testing at 125°C.
Does the MAX14931EAWE+T support different supply voltages on each side?
Yes, the MAX14931EAWE+T supports independent 1.71V–5.5V supplies on Side A (VDDA/GNDA) and Side B (VDDB/GNDB), allowing seamless level translation - for example, interfacing a 1.8V FPGA I/O bank with a 5V microcontroller bus. This eliminates external level shifters and simplifies mixed-voltage system design.
What safety certifications does the MAX14931EAWE+T hold?
The MAX14931EAWE+T is certified to UL 1577 (3750VRMS), VDE 0884-11:2017 (Basic Insulation), and CSA C22.2 No. 5A. It meets IEC 61000-4-5 for ±10kV surge immunity and supports 443VRMS continuous working voltage. These certifications reduce system-level safety qualification effort for industrial and medical end equipment.
What is the default output state of the MAX14931EAWE+T?
The MAX14931EAWE+T has a default-low output configuration: when either VDDA or VDDB is unpowered, all outputs (OUTA1–OUTA4 and OUTB1–OUTB4) settle to logic low. This fail-safe behavior prevents unintended activation of downstream circuitry during power sequencing or brownout conditions.
How does the MAX14931EAWE+T handle common-mode noise?
The MAX14931EAWE+T achieves ≥25kV/µs common-mode transient immunity (CMTI) through its capacitive isolation architecture and internal hysteresis (410mV). This ensures reliable operation in noisy environments like motor drives and switch-mode power supplies, where rapid ground potential shifts would corrupt signals in lower-CMTI isolators.
MAX14931EAWE+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:
- 25Mbps
- Propagation Delay tpLH / tpHL (Max):
- 27.5ns, 28.8ns
- Pulse Width Distortion (Max):
- 2.6ns
- 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
MAX14931EAWE+T FAQ
1.How can I place an order for MAX14931EAWE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14931EAWE+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 MAX14931EAWE+T reliable?
The price and inventory of MAX14931EAWE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14931EAWE+T is usually 5 days.
3.What payment methods are accepted for MAX14931EAWE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14931EAWE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14931EAWE+T?
MAX14931EAWE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14931EAWE+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 MAX14931EAWE+T?
For technical support, including MAX14931EAWE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14931EAWE+T requirements.
6.How does Aetrix verify that MAX14931EAWE+T is sourced from the original manufacturer or authorized distributors?
All MAX14931EAWE+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 MAX14931EAWE+T meets industry standards.
7.What is the process for return or replacement of MAX14931EAWE+T?
All MAX14931EAWE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14931EAWE+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 MAX14931EAWE+T part is unused and in its original packaging.
Return procedure for MAX14931EAWE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX14931EAWE+T Tags
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