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Analog Devices Inc./Maxim Integrated MAX14931EASE+T
- Part No.:
- MAX14931EASE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX14931EASE+T.pdf
- Description:
- DGTL ISO 2750VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,460
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Product details
Overview
MAX14931EASE+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 SPI/RS-485 isolation in industrial motor drives and battery management systems.
For engineers reviewing the MAX14931EASE+T datasheet, MAX14931EASE+T pinout, MAX14931EASE+T application, or MAX14931EASE+T equivalent, this page delivers verified electrical specs (CMTI = 25kV/µs, tPLH/tPHL ≤ 8.2ns at 1.8V), package dimensions (16-pin wide SOIC, 10.3mm × 7.5mm), safety certifications (UL1577, VDE 0884-11 Basic Insulation), and real-world design trade-offs versus alternatives.
Technical Context
The MAX14931EASE+T implements capacitive isolation with differential signal transfer across an integrated dielectric barrier, supporting asymmetric voltage rails (e.g., 1.8V side A / 3.3V side B) without level-shifting circuitry. Its architecture includes enable-controlled three-state outputs and glitch rejection of 15ns, ensuring noise-immune communication in high-CMTI environments like variable-frequency drives.
It belongs to the MAX14930–MAX14932 family optimized for unidirectional 4-channel isolation, distinct from bidirectional I²C-focused variants (e.g., MAX14933) and lower-isolation MAX14130–MAX14131 QSOP variants. The "E" suffix denotes 150Mbps speed grade and default-low output state, validated per IEC 60747-5-5 insulation requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2.75kVRMS withstand (60s), 443VRMS continuous working voltage - meets reinforced insulation requirements for industrial PLC I/O modules |
| Data Rate | 150Mbps maximum - supports high-speed SPI clocking up to 75MHz with clean eye diagrams (TJIT(PK) ≤ 160ps at 1.8V) |
| Propagation Delay | 5.1ns to 14.9ns (tPLH/tPHL, 1.71–5.5V supplies) - enables sub-10ns timing-critical isolated feedback loops |
| CMTI | 25kV/µs minimum - suppresses false triggering during fast-switching gate driver transients in SiC/GaN inverters |
| Supply Range | 1.71V to 5.5V per side - allows direct interfacing with low-voltage FPGAs and legacy 5V microcontrollers |
| Operating Temp | –40°C to +125°C ambient - qualified for under-hood automotive battery monitors and factory-floor motor controllers |
| Creepage/Clearance | 8mm (wide SOIC) - satisfies IEC 61800-5-1 pollution degree 2 requirements for industrial drive safety |
Pinout & Package
Package: 16-pin wide-body SOIC (10.3mm × 7.5mm, outline 21-0042), RoHS-compliant, creepage/clearance ≥8mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA1–INA4 | Primary-side input channels | Accept CMOS/LVTTL logic on side A; VIH = 0.7×VDDA, VIL = 0.6–0.8V depending on supply |
| OUTB1–OUTB4 | Secondary-side isolated outputs | Drive side B loads up to 4mA; VOH = VDDB–0.4V, VOL = 0.4V - compatible with standard logic families |
| ENA | Side A output enable | Active-high control; tEN = 5.1ns (4.5–5.5V), tTRI = 2.7ns - enables fast channel gating in time-multiplexed isolation |
| ENB | Side B output enable | Independent enable for secondary-side outputs; supports bidirectional system-level control arbitration |
| VDDA / GNDA | Primary-side power/ground | Isolated 1.71–5.5V domain powering inputs and ENA; UVLO threshold = 1.45–1.71V |
| VDDB / GNDB | Secondary-side power/ground | Isolated 1.71–5.5V domain powering outputs and ENB; decoupling required per side |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive isolation barrier | 2.75kVRMS rating with 630VPK repetitive peak voltage - eliminates transformer-based isolation complexity while meeting IEC 61800-5-1 |
| Ultra-low propagation skew | Channel-to-channel skew ≤1.6ns (same direction) - ensures deterministic timing for multi-bit parallel isolated data buses |
| Low-power high-speed operation | 14.2mA typical at 150Mbps/3.3V (side B), 10.5mA at 1.8V - reduces thermal load in dense PCB layouts |
| Robust ESD protection | ±4kV HBM on all pins - survives handling and board-level ESD events without external TVS diodes |
| Integrated safety monitoring | Undervoltage lockout (1.45–1.71V) with 50mV hysteresis - prevents metastable output states during brownout conditions |
Applications
| Industrial Motor Drives | Battery Management Systems |
|---|---|
Use Scenario: Isolating gate driver signals and current-sense ADC interfaces in 3-phase inverter stacks. IC Role / Device Role / Timing Role: Unidirectional signal coupler transferring PWM commands from MCU to isolated gate drivers and analog front-end data to isolated ADCs. Use Value: 25kV/µs CMTI prevents false turn-on during 100V/ns switching transients; 150Mbps supports 10-bit ADC sampling at >100kSPS with full isolation. | Use Scenario: Cell voltage monitoring and pack isolation in EV traction battery packs operating up to 900V DC bus. IC Role / Device Role / Timing Role: Galvanically isolating UART/SPI communications between cell monitor ICs (e.g., MAX17853) and main BMS controller. Use Value: 2.75kVRMS isolation withstand and 8mm creepage meet ISO 6469-3 functional safety requirements; –40°C to +125°C range covers under-hood thermal extremes. |
| Programmable Logic Controllers | Medical Diagnostic Equipment |
Use Scenario: Digital I/O isolation for field-side sensor/actuator interfaces in modular PLC backplanes. IC Role / Device Role / Timing Role: 4-channel unidirectional isolator replacing optocouplers in discrete input/output modules with LED status feedback. Use Value: 1.71–5.5V dual-supply flexibility interfaces directly with 3.3V FPGA logic and 24V field-side opto-LEDs; 125°C rating supports fanless enclosure designs. | Use Scenario: Isolating patient-connected analog front-ends (ECG, EEG) from digital processing units in diagnostic imaging systems. IC Role / Device Role / Timing Role: Reinforced insulation barrier for serial data links between isolated analog acquisition ASICs and host processors. Use Value: VDE 0884-11 Basic Insulation certification and 443VRMS working voltage satisfy IEC 60601-1 ed.3 MOOP requirements; low 2pF barrier capacitance minimizes leakage current. |
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, 16-pin SOIC (7.5mm × 10.3mm), TI's capacitive isolation | Higher isolation rating but lower speed; requires external level shifters for 1.8V logic | Select when 5kVRMS is mandated by system safety architecture, accepting bandwidth reduction and added BOM cost |
| ADUM2401BRWZ | 4-channel, 2500VRMS, 25Mbps, 16-pin SOIC (7.5mm × 10.3mm), Analog Devices' iCoupler magnetic isolation | Lower CMTI (50kV/µs claimed but not tested per same method), higher propagation delay (32ns typ), no enable pins | Choose for legacy compatibility where 25Mbps suffices and enable control is unnecessary; avoid in high-dV/dt SiC/GaN systems |
Compared with ISO6741QDWR and ADUM2401BRWZ, the MAX14931EASE+T uniquely balances 150Mbps speed, 2.75kVRMS isolation, integrated enable control, and 1.71V logic compatibility - making it optimal for next-generation industrial automation and EV battery systems demanding both bandwidth and safety.
Availability
MAX14931EASE+T is available at Aetrix Electronics and suitable for industrial motor drives, battery management systems, programmable logic controllers, and medical diagnostic equipment requiring stable component supply across extended temperature and safety-critical environments.
Supply support for MAX14931EASE+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.
The MAX14930–MAX14932 family was designed specifically for high-speed, high-isolation digital signal coupling in harsh industrial and energy systems - emphasizing CMTI resilience, wide supply range, and safety-certified reliability over consumer-grade alternatives.
FAQ
What is the maximum data rate supported by the MAX14931EASE+T?
The MAX14931EASE+T supports a maximum data rate of 150Mbps, verified across its full 1.71V–5.5V supply range and –40°C to +125°C operating temperature. At 3.3V supplies, typical propagation delay is 5.2ns (tPLH) and 5.3ns (tPHL), with pulse-width distortion under 1ns - enabling reliable high-speed SPI and digital I/O isolation without external retiming.
Does the MAX14931EASE+T require external level-shifting circuitry?
No, the MAX14931EASE+T does not require external level-shifting circuitry. Its independent 1.71V–5.5V supplies on each side allow direct connection to 1.8V FPGAs on side A and 3.3V or 5V microcontrollers on side B, with input thresholds scaling to VDDA/VDDB (VIH = 0.7×VDD, VIL = 0.6–0.8V). This eliminates discrete level translators in mixed-voltage systems.
What safety certifications does the MAX14931EASE+T hold?
The MAX14931EASE+T is certified to UL1577 (3750VRMS), CSA C22.2 No. 5A (3750VRMS), and VDE 0884-11:2017 (Basic Insulation, 4600VPK transient, 630VPK repetitive peak). It also meets IEC 61000-4-5 ±10kV surge immunity and IEC 60601-1 for medical MOOP - all documented in Analog Devices file E351759 and TÜV report 095-72100581-200.
How does the enable functionality work on the MAX14931EASE+T?
The MAX14931EASE+T features independent ENA and ENB pins controlling side A and side B outputs respectively. When ENA is low, all OUTBx outputs enter high-impedance state (tTRI = 2.7ns max at 5V); when ENB is low, INAx inputs remain active but OUTBx are disabled. This allows dynamic channel gating in time-division multiplexed isolation schemes without affecting upstream logic.
What is the minimum pulse width the MAX14931EASE+T can reliably transmit?
The MAX14931EASE+T guarantees reliable transmission of pulses as narrow as 6.67ns (minimum pulse width, PWMIN) at 150Mbps data rate. This is validated across all supply voltages (1.71–5.5V) and temperatures (–40°C to +125°C), enabling accurate capture of fast digital events such as fault flags or short-duration trigger signals in power electronics protection circuits.
MAX14931EASE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm 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
MAX14931EASE+T FAQ
1.How can I place an order for MAX14931EASE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14931EASE+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 MAX14931EASE+T reliable?
The price and inventory of MAX14931EASE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14931EASE+T is usually 5 days.
3.What payment methods are accepted for MAX14931EASE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14931EASE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14931EASE+T?
MAX14931EASE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14931EASE+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 MAX14931EASE+T?
For technical support, including MAX14931EASE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14931EASE+T requirements.
6.How does Aetrix verify that MAX14931EASE+T is sourced from the original manufacturer or authorized distributors?
All MAX14931EASE+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 MAX14931EASE+T meets industry standards.
7.What is the process for return or replacement of MAX14931EASE+T?
All MAX14931EASE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14931EASE+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 MAX14931EASE+T part is unused and in its original packaging.
Return procedure for MAX14931EASE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX14931EASE+T Tags
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