My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX14931EAWE+
- Part No.:
- MAX14931EAWE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX14931EAWE+.pdf
- Description:
- DGTL ISO 2750VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:259
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX14931EAWE+ 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 5.1ns typical propagation delay (tPLH), ±4kV ESD protection, and dual 1.71V–5.5V supply domains for level translation. It enables isolated SPI/RS-485 interfaces in industrial fieldbus systems operating from –40°C to +125°C.
For engineers reviewing the MAX14931EAWE+ datasheet, MAX14931EAWE+ pinout, MAX14931EAWE+ application, or MAX14931EAWE+ equivalent, this page delivers verified isolation voltage (2.75kVRMS), CMTI (25kV/µs), channel configuration (4× unidirectional), default output state (low), and safety certifications (UL1577, VDE 0884-11 Basic Insulation) critical for high-reliability industrial and medical designs.
Technical Context
The MAX14931EAWE+ implements capacitive isolation using Maxim's proprietary process, providing reinforced galvanic separation between side A (VDDA/GNDA) and side B (VDDB/GNDB). It supports three data rates (1/25/150Mbps) and two default output states (high/low); the EAWE+ suffix confirms 150Mbps capability and default-low outputs.
Its architecture includes independent enable inputs (ENA/ENB) per side, enabling three-state control of output banks, and features low pulse-width distortion (<1ns at 150Mbps) and tight channel-to-channel skew (0.9ns typical) - essential for timing-critical serial protocols like isolated SPI clock/data lanes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage (VISO) | 2750VRMS for 60s - meets reinforced insulation requirements for industrial safety standards (UL1577, VDE 0884-11). |
| Working Voltage (VIOWM) | 443VRMS continuous - defines maximum steady-state common-mode voltage across isolation barrier. |
| Max Data Rate | 150Mbps - supports high-speed isolated communication (e.g., fast SPI, encoder feedback) without external retiming. |
| Propagation Delay (tPLH) | 5.1ns typical (VDD = 5V) - enables sub-10ns timing budgets for synchronous digital interfaces. |
| CMTI | 25kV/µs - ensures reliable operation in noisy motor drive or power converter environments with rapid ground shifts. |
| Supply Range | 1.71V to 5.5V per side - allows direct interfacing with 1.8V FPGAs and 5V microcontrollers while translating logic levels. |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive, industrial PLC, and battery management applications. |
Pinout & Package
Package: 16-pin wide-body SOIC (10.3mm × 7.5mm), creepage/clearance ≥8mm, RoHS-compliant (W16M+8 outline).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA1–INA4 | Side A input channels | Accept digital signals referenced to GNDA; VIH = 0.7×VDDA, VIL = 0.6–0.8V depending on VDDA. |
| INB1–INB4 | Side B input channels | Accept digital signals referenced to GNDB; VIH = 0.7×VDDB, VIL = 0.6–0.8V depending on VDDB. |
| OUTA1–OUTA4 | Side A output channels | Drive loads referenced to GNDA; VOH = VDDA–0.4V, VOL = 0.4V @ 4mA sink/source. |
| OUTB1–OUTB4 | Side B output channels | Drive loads referenced to GNDB; VOH = VDDB–0.4V, VOL = 0.4V @ 4mA sink/source. |
| VDDA / GNDA | Side A power/ground | Supplies side A logic; supports 1.71–5.5V; UVLO threshold = 1.45–1.71V with 50mV hysteresis. |
| VDDB / GNDB | Side B power/ground | Supplies side B logic; independent of VDDA; enables level-shifting and domain separation. |
| ENA / ENB | Output enable controls | Active-high enables respective output banks; tEN = 5.1ns (VDD=5V), tTRI = 2.7ns - fast enable/disable for power gating. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Isolation Barrier | 2.75kVRMS withstand (60s), 443VRMS working voltage, and 630VPK repetitive peak - certified to UL1577 and VDE 0884-11 Basic Insulation. |
| High-Speed Timing Performance | 150Mbps max data rate, 5.1ns tPLH, <1ns pulse-width distortion, and 0.9ns channel-to-channel skew - preserves signal integrity in fast serial links. |
| Robust Noise Immunity | 25kV/µs common-mode transient immunity (CMTI) - maintains correct output during fast ground bounce in motor drives or SMPS. |
| Dual-Supply Level Translation | Independent 1.71–5.5V supplies on each side - eliminates external level shifters when interfacing 1.8V sensors to 5V controllers. |
| Low-Power High-Speed Operation | 14.2mA typical total supply current at 150Mbps and 3.3V (side A + side B) - reduces thermal load in dense PCB layouts. |
Applications
| Industrial Fieldbus Isolation | Isolated SPI Interface |
|---|---|
|
Use Scenario: Isolating RS-485 transceivers in programmable logic controllers (PLCs) exposed to 2kV surge events per IEC 61000-4-5. IC Role / Device Role / Timing Role: Provides galvanic separation between controller MCU and field-side bus, blocking ground loops and fault currents. Use Value: Enables 2.75kVRMS isolation rating and ±10kV surge protection - meeting IEC 61800-3 and IEC 61000-4-5 system-level requirements. |
Use Scenario: Isolating SPI clock (SCLK), MOSI, MISO, and CS lines between an industrial FPGA and isolated ADC/DAC on a high-noise motor control board. IC Role / Device Role / Timing Role: Transfers four unidirectional signals with matched propagation delays (≤0.9ns skew) to preserve setup/hold timing margins. Use Value: Supports 150Mbps operation with 5.1ns tPLH - enabling >30MHz SPI clocks without timing violations or added jitter. |
| Battery Management Systems | Medical Sensor Isolation |
|
Use Scenario: Isolating cell voltage monitoring ICs from the main BMS microcontroller in EV traction battery packs operating at 800V bus potential. IC Role / Device Role / Timing Role: Transfers analog front-end status and fault signals across isolation barrier while maintaining functional safety integrity. Use Value: 443VRMS working voltage and 630VPK repetitive peak rating - compliant with IEC 60601-1 MOOP requirements for patient-connected equipment. |
Use Scenario: Isolating EEG/ECG front-end amplifiers from digital processing units in diagnostic imaging equipment requiring 600VRMS working voltage. IC Role / Device Role / Timing Role: Provides basic insulation barrier with 2pF inter-side capacitance - minimizing signal coupling and noise injection into sensitive analog paths. Use Value: 2pF barrier capacitance and 25kV/µs CMTI - reduces common-mode interference and preserves SNR in µV-level biomedical measurements. |
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 isolation, 150Mbps, but uses silicon dioxide barrier and requires 2.5–5.5V supplies only - no 1.71V support. | Higher isolation rating suits medical/AES applications; lacks 1.71V compatibility for ultra-low-power sensor nodes. | Select SI8641ED-B-IS when 5kVRMS certification (UL60950-1, CSA C22.2 No. 60950-1) is mandatory and 1.71V operation is unnecessary. |
| ISO6741FDWR | 4-channel, 5000VRMS isolation, 50Mbps max, 2.25–5.5V supply range, and 25kV/µs CMTI - lower speed, higher isolation. | Better suited for slower industrial I/O modules where cost-per-channel and long-term reliability outweigh speed needs. | Choose ISO6741FDWR for cost-sensitive, lower-data-rate applications requiring TI's enhanced manufacturing traceability and 30-year longevity assurance. |
Compared with SI8641ED-B-IS and ISO6741FDWR, the MAX14931EAWE+ uniquely combines 150Mbps speed, 2.75kVRMS isolation, 1.71V minimum supply, and VDE 0884-11 certification - making it optimal for space-constrained, high-speed industrial edge nodes needing wide-VDD flexibility.
Availability
MAX14931EAWE+ is available at Aetrix Electronics and suitable for industrial fieldbus communications, isolated SPI interfaces, battery management systems, and medical sensor isolation requiring stable component supply across extended temperature ranges and safety-critical deployments.
Supply support for MAX14931EAWE+ 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 (acquired Maxim Integrated in 2021) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The MAX1493x family was designed specifically for high-reliability galvanic isolation in harsh industrial environments - emphasizing speed, CMTI, safety certification, and dual-supply flexibility for next-generation PLCs, motor drives, and energy storage systems.
FAQ
What is the isolation voltage rating of the MAX14931EAWE+?
The MAX14931EAWE+ is rated for 2750VRMS withstand isolation voltage for 60 seconds (VISO), with a continuous working voltage (VIOWM) of 443VRMS and a repetitive peak voltage (VIORM) of 630VPK. These values are certified per UL1577 and VDE 0884-11 Basic Insulation standards, and the device also withstands ±10kV surge per IEC 61000-4-5.
Does the MAX14931EAWE+ support level translation between different logic voltages?
Yes, the MAX14931EAWE+ supports true bidirectional level translation via independent 1.71V–5.5V supplies on side A (VDDA/GNDA) and side B (VDDB/GNDB). This allows interfacing a 1.8V FPGA I/O bank with a 5V microcontroller peripheral without external level shifters - all while maintaining full isolation integrity and timing performance.
What is the default output state of the MAX14931EAWE+?
The MAX14931EAWE+ has a default-low output configuration: when either side's input is unpowered (e.g., VDDA = 0V), the corresponding outputs (OUTA1–OUTA4) go to logic low. This behavior is confirmed by the "E" suffix in the part number per Maxim's ordering guide and prevents floating or undefined states during power sequencing.
How does the MAX14931EAWE+ handle common-mode noise in motor drive applications?
The MAX14931EAWE+ achieves 25kV/µs common-mode transient immunity (CMTI), measured per IEC 61000-4-4 with 1000V transients between GNDA and GNDB. This ensures reliable signal transmission even during rapid ground potential shifts caused by IGBT switching in inverters - preventing false triggering or data corruption in isolated gate drivers or current sensing circuits.
Is the MAX14931EAWE+ pin-compatible with other devices in the MAX14930–MAX14932 family?
Yes, all MAX14930–MAX14932 variants share identical 16-pin wide-body SOIC pinouts and footprint (W16M+8), including MAX14931EAWE+. Differences lie only in data rate (1/25/150Mbps), default output state (high/low), and internal configuration - allowing drop-in replacement during design iteration or qualification without PCB changes.
MAX14931EAWE+ 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:
- 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+ FAQ
1.How can I place an order for MAX14931EAWE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14931EAWE+ 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+ reliable?
The price and inventory of MAX14931EAWE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14931EAWE+ is usually 5 days.
3.What payment methods are accepted for MAX14931EAWE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14931EAWE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14931EAWE+?
MAX14931EAWE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14931EAWE+ 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+?
For technical support, including MAX14931EAWE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14931EAWE+ requirements.
6.How does Aetrix verify that MAX14931EAWE+ is sourced from the original manufacturer or authorized distributors?
All MAX14931EAWE+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX14931EAWE+?
All MAX14931EAWE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX14931EAWE+, 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+ part is unused and in its original packaging.
Return procedure for MAX14931EAWE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX14931EAWE+ Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
-
ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
