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Analog Devices Inc./Maxim Integrated MAX14931DAWE+
- Part No.:
- MAX14931DAWE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX14931DAWE+.pdf
- Description:
- DGTL ISO 2750VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,813
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Product details
Overview
MAX14931DAWE+ 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 6.67ns minimum pulse width, 25kV/µs common-mode transient immunity, and operates from –40°C to +125°C - enabling robust signal integrity in industrial fieldbus and battery management systems.
For engineers reviewing the MAX14931DAWE+ datasheet, MAX14931DAWE+ pinout, MAX14931DAWE+ application, or MAX14931DAWE+ equivalent, this device supports high-speed SPI/RS-485 isolation with low propagation delay skew (≤0.9ns channel-to-channel), precise timing control for time-critical I/O, and level translation between mixed-voltage subsystems without external logic.
Technical Context
The MAX14931DAWE+ implements capacitive isolation with proprietary silicon-dioxide barrier technology, supporting unidirectional A→B and B→A channel configurations per device variant. Its architecture delivers deterministic timing with <1ns pulse-width distortion at 150Mbps and guarantees functional operation up to +125°C ambient.
It integrates enable-controlled three-state outputs (tEN = 5.1ns typ., tTRI = 2.7ns typ. at 5V), supports fail-safe default-low output state, and meets VDE 0884-11 Basic Insulation requirements with 630VPK repetitive peak voltage rating and 4600VPK transient withstand capability.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2.75kVRMS for 60s (UL1577), 443VRMS continuous working voltage - enables safe operation in Class I industrial mains-connected equipment. |
| Max Data Rate | 150Mbps - supports high-throughput SPI clocking and fast serial bus isolation without timing bottlenecks. |
| Propagation Delay Skew | 0.9ns (same-direction channels) - ensures tight timing alignment across all four isolated signals for synchronous protocols. |
| Common-Mode Transient Immunity | 25kV/µs - maintains signal integrity in noisy motor drive or power converter environments with rapid ground shifts. |
| Supply Voltage Range | 1.71V to 5.5V on both sides - allows direct interfacing with 1.8V microcontrollers and 5V legacy peripherals without level shifters. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial PLC, and medical battery management applications. |
| Peak Eye Jitter | 140ps at 5V - preserves signal eye margin for reliable high-speed serial link operation over PCB traces. |
Pinout & Package
MAX14931DAWE+ is housed in a 16-pin wide-body SOIC package (10.3mm × 7.5mm, 8mm creepage/clearance), optimized for high-voltage isolation integrity in space-constrained industrial designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA / GNDA | Side-A power supply and ground | Provides isolated domain power for input-side logic; supports 1.71–5.5V operation and level translation into side-B. |
| VDDB / GNDB | Side-B power supply and ground | Independent isolated domain power for output-side logic; decouples noise between controller and actuator subsystems. |
| INA1–INA4 | Side-A digital inputs | Accept CMOS/LVTTL signals; VIH = 0.7×VDDA, VIL = 0.6–0.8V depending on supply - compatible with most MCUs and FPGAs. |
| OUTB1–OUTB4 | Side-B digital outputs | Drive 4mA loads with VOH = VDDB–0.4V, VOL = 0.4V - directly interfaces with 3.3V/5V receivers without pull-ups. |
| ENA / ENB | Output enable controls | Enable/disable side-A and side-B outputs independently; tEN = 5.1ns (5V), tTRI = 2.7ns - enables dynamic power gating. |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive isolation barrier | 2.75kVRMS withstand, 630VPK repetitive peak voltage, and 4600VPK transient rating - certified to VDE 0884-11 and UL1577 for safety-critical systems. |
| High-speed timing performance | 5.1ns propagation delay (tPLH), ≤1ns pulse-width distortion, and 0.9ns channel-to-channel skew - enables precise synchronization in multi-signal isolation. |
| Dual-supply level translation | Independent 1.71–5.5V supplies on each side - eliminates need for external level shifters when bridging 1.8V sensors to 5V actuators. |
| Robust noise immunity | 25kV/µs CMTI and ±4kV HBM ESD protection - sustains reliable operation in electrically harsh factory automation and motor control environments. |
| Fail-safe default-low output | Outputs go low when input side is unpowered - prevents undefined states in power-fail or brown-out conditions for safe system shutdown. |
Applications
| Industrial Fieldbus Isolation | SPI Interface Isolation |
|---|---|
|
Use Scenario: Isolating RS-485 transceivers in programmable logic controllers to prevent ground loops and fault current propagation across distributed I/O racks. IC Role / Device Role / Timing Role: Bidirectional signal isolator (A→B/B→A) with 25kV/µs CMTI and 150Mbps bandwidth - maintains data integrity during high-di/dt switching events. Use Value: Enables 2.75kVRMS reinforced insulation compliance while supporting full-duplex 25Mbps RS-485 communication without timing degradation. |
Use Scenario: Isolating high-speed SPI buses between MCU and isolated ADCs or DACs in precision test equipment. IC Role / Device Role / Timing Role: Unidirectional isolator with 5.1ns tPLH and 0.9ns channel skew - preserves SPI clock/data setup/hold margins at ≥20MHz SCLK. Use Value: Eliminates timing jitter-induced bit errors and supports deterministic sampling in metrology-grade data acquisition systems. |
| Battery Management Systems | Medical Isolated Monitoring |
|
Use Scenario: Isolating cell voltage monitoring ICs from main battery controller in EV traction battery packs operating at >400V DC bus. IC Role / Device Role / Timing Role: 4-channel unidirectional isolator with 8mm creepage and 443VRMS working voltage - meets IEC 61010-1 basic insulation requirements. Use Value: Provides galvanic separation between high-voltage battery stack and low-voltage control electronics while supporting real-time telemetry updates. |
Use Scenario: Isolating patient-connected analog front-ends (ECG, EEG) from digital processing units in diagnostic imaging and bedside monitors. IC Role / Device Role / Timing Role: Safety-certified isolator with VDE 0884-11 Basic Insulation and 630VPK repetitive peak rating - satisfies IEC 60601-1 MOOP requirements. Use Value: Ensures patient safety via reinforced barrier integrity while enabling high-resolution sensor data transfer at 150Mbps without latency penalty. |
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 isolation, 50Mbps max data rate, 16-pin SOIC - lower speed but higher isolation rating. | Preferred for medical devices requiring 5kVRMS reinforced insulation; unsuitable for >50Mbps SPI or RS-485 links. | Select when regulatory certification demands >2.75kVRMS isolation, and data rate ≤50Mbps suffices. |
| ADUM141E0BRZ | 4-channel, 3750VRMS isolation, 150Mbps, 16-pin SOIC - similar speed but uses iCoupler magnetic isolation and lacks default-low option. | Used where magnetic coupling is preferred over capacitive; no built-in fail-safe low-default output state. | Choose when compatibility with ADI's iCoupler ecosystem is required, and default output state is managed externally. |
Compared with ISO6741QDWR and ADUM141E0BRZ, the MAX14931DAWE+ uniquely combines 150Mbps speed, 2.75kVRMS isolation, and factory-configured default-low outputs - making it optimal for high-speed industrial I/O where fail-safe behavior and timing precision are jointly critical.
Availability
MAX14931DAWE+ is available at Aetrix Electronics and suitable for industrial fieldbus communications, battery management systems, and medical isolated monitoring requiring stable component supply and long-term lifecycle support.
Supply support for MAX14931DAWE+ 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 semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX14930–MAX14932 family was designed specifically for high-reliability multichannel isolation in harsh environments - emphasizing speed, safety certification, and thermal robustness from –40°C to +125°C.
FAQ
What is the isolation voltage rating of the MAX14931DAWE+?
The MAX14931DAWE+ is rated for 2.75kVRMS isolation voltage for 60 seconds per UL1577, with 443VRMS continuous working voltage (VIOWM) and 630VPK repetitive peak voltage (VIORM). It is certified to VDE 0884-11 Basic Insulation and meets IEC 61010-1 and IEC 60601-1 safety standards for industrial and medical applications.
Does the MAX14931DAWE+ support bidirectional communication?
No - the MAX14931DAWE+ is a unidirectional digital isolator. It supports configurable channel direction (A→B only, B→A only, or mixed), but each channel transfers data in one fixed direction. For true bidirectional protocols like I²C, Analog Devices recommends the MAX14933 series instead.
What is the default output state of the MAX14931DAWE+?
The MAX14931DAWE+ is configured as a default-low device: when the input-side supply (VDDA) is unpowered or below UVLO threshold, all OUTB outputs transition to logic low. This fail-safe behavior prevents undefined states in power-loss scenarios and simplifies system-level safety design.
Can the MAX14931DAWE+ operate with different supply voltages on each side?
Yes - the MAX14931DAWE+ supports independent 1.71V to 5.5V supplies on VDDA/GNDA and VDDB/GNDB. This enables seamless level translation, such as interfacing a 1.8V FPGA I/O bank with a 5V RS-485 transceiver, without external level-shifting components.
What package type is used for the MAX14931DAWE+?
The MAX14931DAWE+ uses a 16-pin wide-body SOIC package (outline 21-0042) measuring 10.3mm × 7.5mm, with 8mm creepage and clearance distances. This package meets reinforced insulation requirements for 2.75kVRMS isolation and is RoHS-compliant with lead-free terminations.
MAX14931DAWE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- 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:
- 1Mbps
- Propagation Delay tpLH / tpHL (Max):
- 54.1ns, 55.3ns
- Pulse Width Distortion (Max):
- 4.5ns
- 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
MAX14931DAWE+ FAQ
1.How can I place an order for MAX14931DAWE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14931DAWE+ 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 MAX14931DAWE+ reliable?
The price and inventory of MAX14931DAWE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14931DAWE+ is usually 5 days.
3.What payment methods are accepted for MAX14931DAWE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14931DAWE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14931DAWE+?
MAX14931DAWE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14931DAWE+ 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 MAX14931DAWE+?
For technical support, including MAX14931DAWE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14931DAWE+ requirements.
6.How does Aetrix verify that MAX14931DAWE+ is sourced from the original manufacturer or authorized distributors?
All MAX14931DAWE+ 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 MAX14931DAWE+ meets industry standards.
7.What is the process for return or replacement of MAX14931DAWE+?
All MAX14931DAWE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX14931DAWE+, 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 MAX14931DAWE+ part is unused and in its original packaging.
Return procedure for MAX14931DAWE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX14931DAWE+ Tags
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SI8710AC-B-ISR
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ISO7741FDWR
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