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Analog Devices Inc./Maxim Integrated MAX14931DAWE+T
- Part No.:
- MAX14931DAWE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX14931DAWE+T.pdf
- Description:
- DGTL ISO 2750VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,956
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Product details
Overview
MAX14931DAWE+T from Analog Devices is a 4-channel, unidirectional digital isolator with 2.75kVRMS galvanic isolation, 150Mbps 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 MAX14931DAWE+T datasheet, MAX14931DAWE+T pinout, MAX14931DAWE+T application, or MAX14931DAWE+T equivalent, this device delivers high-speed, low-jitter isolation with VDE-certified basic insulation, CMTI ≥25kV/µs, and compatibility with SPI/RS-485 level translation in space-constrained wide SOIC packages.
Technical Context
The MAX14931DAWE+T implements capacitive isolation with proprietary process technology, supporting only unidirectional channel flow (A→B) across all four channels. Its architecture enables precise timing control via enable inputs (ENA/ENB), three-state outputs, and propagation delay skew <1.6ns (channel-to-channel, same direction) at 5V supply.
It is rated for continuous 443VRMS working voltage (VIOWM) and withstands ±10kV surge per IEC 61000-4-5. The device meets DIN VDE V 0884-11:2017-01 for basic insulation, with 630VPK repetitive peak voltage (VIORM) and 4600VPK transient isolation voltage (VIOTM).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2.75kVRMS for 60s (VISO); certified to UL1577, cUL, VDE 0884-11 Basic Insulation |
| Data Rate | 150Mbps - supports high-speed serial interfaces like isolated SPI clock/data lines |
| Propagation Delay | 4.9–14.9ns (tPHL/tPLH) - ensures sub-15ns latency critical for real-time control loops |
| CMTI | ≥25kV/µs - rejects fast common-mode transients in motor drives and power converters |
| Supply Range | 1.71V to 5.5V per side - enables direct interfacing with 1.8V FPGAs and 5V microcontrollers |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive and industrial ambient environments |
| Package | 16-pin wide-body SOIC (10.3mm × 7.5mm, 8mm creepage/clearance) - meets IPC-2221 spacing requirements |
Pinout & Package
MAX14931DAWE+T is housed in a 16-pin wide-body SOIC package (outline 21-0042, land pattern 90-0107) with 8mm creepage and clearance, optimized for reinforced insulation in high-voltage industrial systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA1–INA4 | Primary-side input signals | Accept logic-level inputs referenced to GNDA; VIH = 0.7×VDDA, VIL ≤ 0.8V |
| OUTB1–OUTB4 | Secondary-side isolated outputs | Drive loads up to 4mA; VOH = VDDB–0.4V, VOL ≤ 0.4V referenced to GNDB |
| VDDA / GNDA | Primary-side power domain | Supplies side-A circuitry; supports 1.71–5.5V; UVLO threshold = 1.58V typical |
| VDDB / GNDB | Secondary-side power domain | Supplies side-B circuitry; independent of VDDA; enables level translation between domains |
| ENA / ENB | Output enable controls | Active-high enables OUTA_/OUTB_; tEN = 5.1ns (5V), tTRI = 2.7ns - supports dynamic channel gating |
Key Features
| Feature | Design Value |
|---|---|
| High-speed isolation | 150Mbps data rate with 6.67ns minimum pulse width - enables Gb-class serial link isolation |
| Low-jitter timing | Peak eye diagram jitter ≤160ps (1.8V) - preserves signal integrity in high-frequency clock distribution |
| Robust noise immunity | CMTI ≥25kV/µs - maintains data integrity during switching events in inverters and PLCs |
| Flexible power operation | Independent 1.71–5.5V supplies per side - eliminates external level shifters in mixed-voltage systems |
| Fail-safe default state | Default-low output configuration - ensures known logic state during power-up or fault conditions |
Applications
| Industrial Fieldbus Isolation | Isolated SPI Interface |
|---|---|
|
Use Scenario: RS-485 communication node in factory automation PLC rack with 24V bus and noisy 3.3V controller domain. IC Role / Device Role / Timing Role: Unidirectional isolator bridging controller UART TX to RS-485 transceiver input, preventing ground loop currents and ESD coupling. Use Value: 2.75kVRMS isolation and 25kV/µs CMTI suppress transients from motor drives, ensuring >99.9% packet integrity over 1km cable runs. |
Use Scenario: Isolating SPI clock and data lines between an MCU and isolated ADC in a high-voltage energy meter. IC Role / Device Role / Timing Role: Four-channel A→B isolator carrying SCLK, MOSI, MISO (with separate direction), and CS signals across safety barrier. Use Value: 150Mbps capability supports 20MHz SPI clocks; sub-15ns propagation delay preserves setup/hold timing margins. |
| Battery Management System (BMS) | Medical Sensor Interface |
|
Use Scenario: Cell monitoring IC communication in 800V EV battery pack, where analog front-end resides on high-voltage domain and MCU on low-voltage domain. IC Role / Device Role / Timing Role: Isolating UART telemetry and fault-reporting signals from BMS controller to pack supervisor MCU. Use Value: –40°C to +125°C rating matches battery thermal profile; 443VRMS working voltage supports long-term reliability at 600VDC system potential. |
Use Scenario: EEG/ECG front-end module requiring patient-isolated digital interface to host processor in Class II medical equipment. IC Role / Device Role / Timing Role: Providing reinforced isolation for digital sensor data streams while meeting IEC 60601-1 creepage/clearance and leakage current limits. Use Value: VDE-certified basic insulation and 8mm creepage meet MOOP requirements; 2pF barrier capacitance minimizes signal coupling into sensitive analog paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8641ED-IS | 4-channel, 150Mbps, 5kVRMS isolation, 2.5–5.5V supply, default-high outputs | Higher isolation rating suits medical/AES applications; lacks 1.8V operation support | Select when 5kVRMS and UL/VDE reinforced insulation are mandatory; verify default-state compatibility with system reset behavior |
| ISO6741FDWR | 4-channel, 50Mbps, 5000VRMS, 1.71–5.5V, default-low, SOIC-16 narrow body | Lower data rate but higher surge rating (12.8kV); narrower 4mm creepage package | Prefer for cost-sensitive industrial designs needing 5kVRMS surge immunity but not 150Mbps speed |
Compared with MAX14931DAWE+T, SI8641ED-IS offers higher isolation voltage but no 1.8V operation, while ISO6741FDWR trades speed for surge robustness and uses a smaller footprint - making MAX14931DAWE+T optimal for high-speed, wide-temperature, mixed-voltage industrial isolation where 2.75kVRMS suffices.
Availability
MAX14931DAWE+T is available at Aetrix Electronics and suitable for industrial fieldbus communications, isolated SPI interfaces, and battery management systems requiring stable component supply across extended temperature and high-reliability production cycles.
Supply support for MAX14931DAWE+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 semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX14930–MAX14932 family was designed specifically for high-speed, high-isolation-density digital signal transfer in harsh industrial environments - emphasizing low power, wide supply range, and regulatory compliance without sacrificing timing precision.
FAQ
What is the maximum data rate supported by the MAX14931DAWE+T?
The MAX14931DAWE+T supports a maximum data rate of 150Mbps, verified across its full operating temperature range (–40°C to +125°C) and supply voltage range (1.71V to 5.5V). This performance is achieved with guaranteed minimum pulse width of 6.67ns and propagation delay skew under 1.6ns, making it suitable for high-speed isolated SPI and digital telemetry links.
Does the MAX14931DAWE+T support bidirectional communication?
No, the MAX14931DAWE+T is a unidirectional isolator with fixed A→B channel direction only. It does not support bidirectional protocols like I²C; for such applications, Analog Devices specifies the MAX14933. The MAX14931DAWE+T's four channels all transmit from side-A (INA1–INA4) to side-B (OUTB1–OUTB4), with no reverse-path capability.
What safety certifications apply to the MAX14931DAWE+T?
The MAX14931DAWE+T is certified to UL1577 (3750VRMS), cUL (CSA Bulletin 5A), and VDE 0884-11:2017-01 for basic insulation. It meets IEC 60950-1 and IEC 61010-1 for 443VRMS working voltage, and passes IEC 61000-4-5 ±10kV surge testing. Certification file E351759 covers UL/cUL; VDE file ref. 5015017-4880-0001/272147/TL7/SCT applies.
Can the MAX14931DAWE+T operate with different supply voltages on each side?
Yes, the MAX14931DAWE+T supports independent 1.71V to 5.5V supplies on side-A (VDDA/GNDA) and side-B (VDDB/GNDB), enabling seamless level translation between disparate logic families - for example, interfacing a 1.8V FPGA I/O bank to a 5V RS-485 transceiver without external translators.
What is the default output state of the MAX14931DAWE+T?
The MAX14931DAWE+T has a default-low output configuration: when any input (INAx) is unpowered or floating, the corresponding output (OUTBx) defaults to logic low. This fail-safe behavior is confirmed by the "D" suffix in the part number per Analog Devices' ordering guide and ensures predictable state during power sequencing or fault conditions.
MAX14931DAWE+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:
- 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+T FAQ
1.How can I place an order for MAX14931DAWE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14931DAWE+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 MAX14931DAWE+T reliable?
The price and inventory of MAX14931DAWE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14931DAWE+T is usually 5 days.
3.What payment methods are accepted for MAX14931DAWE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14931DAWE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14931DAWE+T?
MAX14931DAWE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14931DAWE+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 MAX14931DAWE+T?
For technical support, including MAX14931DAWE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14931DAWE+T requirements.
6.How does Aetrix verify that MAX14931DAWE+T is sourced from the original manufacturer or authorized distributors?
All MAX14931DAWE+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 MAX14931DAWE+T meets industry standards.
7.What is the process for return or replacement of MAX14931DAWE+T?
All MAX14931DAWE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14931DAWE+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 MAX14931DAWE+T part is unused and in its original packaging.
Return procedure for MAX14931DAWE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX14931DAWE+T Tags
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ISO7741FDWR
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