My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX14931BAWE+T
- Part No.:
- MAX14931BAWE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX14931BAWE+T.pdf
- Description:
- DGTL ISO 2750VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,000
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX14931BAWE+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 6.67ns minimum pulse width, 5.1ns typical propagation delay (tPLH), and operates from –40°C to +125°C - enabling high-speed SPI, RS-485, and industrial I/O isolation in harsh environments.
For engineers reviewing the MAX14931BAWE+T datasheet, MAX14931BAWE+T pinout, MAX14931BAWE+T application, or MAX14931BAWE+T equivalent, this device delivers verified 150Mbps performance with <1ps pulse-width distortion at 5V, robust 25kV/µs CMTI, and VDE-certified basic insulation - critical for fieldbus, battery management, and medical system designs requiring functional safety compliance.
Technical Context
The MAX14931BAWE+T implements capacitive isolation with proprietary silicon-dioxide barrier technology, supporting only unidirectional channel configuration (A→B). Its architecture enables precise timing control via dedicated ENA/ENB enable inputs, with output default-low behavior confirmed by part suffix "B" per Ordering Information.
It supports full 1.71V–5.5V supply range on both sides independently, enabling level translation between logic families. The device is rated for continuous 443VRMS working voltage (VIOWM) and withstands ±10kV surge per IEC 61000-4-5, meeting UL1577, cUL, and VDE 0884-11 Basic Insulation standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2.75kVRMS for 60s (VISO); certified to UL1577, VDE 0884-11 Basic Insulation |
| Data Rate | 150Mbps - supports high-speed SPI clocking and real-time sensor data links without timing bottlenecks |
| Propagation Delay | 5.1ns (tPLH, typ @ 4.5–5.5V) - enables sub-10ns timing-critical signal crossing between domains |
| Common-Mode Transient Immunity | 25kV/µs - maintains signal integrity in noisy motor drives and power converter environments |
| Supply Voltage Range | 1.71V to 5.5V per side - allows direct interfacing with 1.8V microcontrollers and 5V legacy peripherals |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial PLC, and battery pack monitoring |
| Pulse-Width Distortion | <1ns (|tPLH − tPHL|, typ @ 4.5–5.5V) - preserves duty cycle fidelity for clock distribution and PWM isolation |
Pinout & Package
MAX14931BAWE+T is housed in a 16-pin wide-body SOIC package (10.3mm × 7.5mm, creepage/clearance = 8mm), with RoHS-compliant lead finish and moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA1–INA4 | Primary-side input channels | Accept CMOS/LVTTL signals referenced to GNDA; VIH = 0.7×VDDA, VIL = 0.8V (≥2.25V) |
| OUTB1–OUTB4 | Secondary-side output channels | Drive CMOS loads referenced to GNDB; VOH = VDDB−0.4V, VOL = 0.4V @ 4mA |
| ENA | Primary-side enable input | Active-high; disables all OUTA outputs when low (not applicable to MAX14931 - no OUTA outputs) |
| ENB | Secondary-side enable input | Active-high; places OUTB1–OUTB4 in high-impedance state when low |
| VDDA / GNDA | Primary-side power and ground | Support 1.71V–5.5V; UVLO threshold = 1.58V (typ), hysteresis = 50mV |
| VDDB / GNDB | Secondary-side power and ground | Independent 1.71V–5.5V domain; enables level-shifting and fault-domain separation |
Key Features
| Feature | Design Value |
|---|---|
| 150Mbps unidirectional data transfer | Enables real-time isolation of high-speed serial interfaces like SPI clock/data lines without protocol overhead |
| 25kV/µs common-mode transient immunity | Prevents data corruption during fast-switching events in motor drives and inverters |
| Output default-low configuration | Ensures known safe state on secondary side during power-up or primary-side failure (suffix "B") |
| 8mm creepage/clearance (wide SOIC) | Meets reinforced insulation requirements for industrial safety standards including IEC 61010-1 |
| Integrated undervoltage lockout (UVLO) | Prevents metastable output states by disabling outputs until VDDA/VDDB exceed 1.58V (typ) |
Applications
| Industrial Fieldbus Isolation | SPI Interface Isolation |
|---|---|
|
Use Scenario: Isolating RS-485 transceivers in programmable logic controllers to prevent ground loops and noise coupling across distributed I/O racks. IC Role / Device Role: Unidirectional signal isolator bridging controller-side logic (VDDA = 3.3V) and bus-side transceiver (VDDB = 5V). Use Value: Maintains 150Mbps timing margin for multi-drop polling cycles while surviving 25kV/µs transients on factory floor wiring. |
Use Scenario: Isolating high-speed SPI clock and data lines between MCU and isolated ADC/DAC in precision measurement systems. IC Role / Device Role: Four-channel A→B isolator with matched propagation delay (tSCSLH ≤ 0.9ns) preserving SPI timing budgets. Use Value: Enables >20MHz SPI SCLK without skew-induced setup/hold violations, validated across –40°C to +125°C. |
| Battery Management System (BMS) | Medical Sensor Interface |
|
Use Scenario: Isolating cell voltage monitoring ICs from main BMS controller in EV traction battery packs operating up to +85°C ambient. IC Role / Device Role: Galvanically isolates analog front-end telemetry while supporting 1.8V MCU logic and 5V sensor supplies. Use Value: 2.75kVRMS isolation rating and 443VRMS working voltage meet IEC 61010-1 MOOP requirements for Class I equipment. |
Use Scenario: Isolating patient-connected ECG/EEG front-ends from hospital-grade digital processing units to satisfy IEC 60601-1 creepage requirements. IC Role / Device Role: Provides basic insulation barrier with 8mm creepage, VDE-certified VIOWM = 443VRMS, and CTI = 575. Use Value: Eliminates risk of leakage current paths while maintaining sub-10ns timing for real-time arrhythmia detection algorithms. |
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, 150Mbps, 3.75kVRMS isolation; 2.5V–5.5V supplies; no default-state option | Higher isolation rating but lacks output default-low configuration and 1.71V low-voltage support | Select when higher isolation voltage is required and default state is managed externally |
| ADUM4401BRWZ | 4-channel, 25Mbps, 5kVRMS; 2.7V–5.5V supplies; default-high outputs | Lower speed, higher isolation, different default state; not drop-in compatible due to timing and supply constraints | Choose for cost-sensitive 25Mbps applications where 5kVRMS is mandatory and 1.71V operation is unnecessary |
Compared with SI8641ED-B-IS and ADUM4401BRWZ, the MAX14931BAWE+T uniquely combines 150Mbps speed, 1.71V operation, default-low outputs, and 2.75kVRMS isolation in a single wide-SOIC package - making it optimal for space-constrained, high-speed industrial and medical isolation where deterministic power-on state is critical.
Availability
MAX14931BAWE+T is available at Aetrix Electronics and suitable for industrial fieldbus communications, high-speed SPI isolation, and battery management systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MAX14931BAWE+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-density digital signal isolation in demanding industrial and medical applications - emphasizing timing precision, safety certification, and wide supply flexibility.
FAQ
What is the maximum data rate supported by the MAX14931BAWE+T?
The MAX14931BAWE+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 is confirmed in the Dynamic Electrical Characteristics table for MAX1493_B/E variants, with minimum pulse width of 6.67ns and propagation delay as low as 5.1ns (tPLH, typ).
Does the MAX14931BAWE+T have a default output state, and how is it configured?
Yes, the MAX14931BAWE+T has a default-low output configuration, indicated by the "B" in its part number per the Product Selector Guide. When the input side (INAx) is unpowered or floating, all OUTBx outputs drive low. This behavior is guaranteed by internal circuitry and does not require external pull-down resistors.
Which safety certifications apply to the MAX14931BAWE+T?
The MAX14931BAWE+T is certified to UL1577 (3750VRMS), cUL (CSA 5A), and VDE 0884-11:2017-01 for Basic Insulation. It meets IEC 61010-1 (443VRMS working voltage) and IEC 60601-1 for medical applications, with 630VPK repetitive peak voltage and 10kV surge immunity per IEC 61000-4-5.
Can the MAX14931BAWE+T be used for bidirectional communication such as I²C?
No, the MAX14931BAWE+T is strictly unidirectional (A→B only) and does not support bidirectional protocols like I²C. For I²C isolation, Analog Devices specifies the MAX14933 family. Attempting to use MAX14931BAWE+T for bidirectional signaling will result in incorrect logic states and potential bus contention.
What is the creepage and clearance distance of the MAX14931BAWE+T package?
The MAX14931BAWE+T uses a 16-pin wide-body SOIC package with minimum creepage and clearance distances of 8mm, satisfying reinforced insulation requirements for industrial and medical safety standards including IEC 61010-1 and IEC 60601-1.
MAX14931BAWE+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
MAX14931BAWE+T FAQ
1.How can I place an order for MAX14931BAWE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14931BAWE+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 MAX14931BAWE+T reliable?
The price and inventory of MAX14931BAWE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14931BAWE+T is usually 5 days.
3.What payment methods are accepted for MAX14931BAWE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14931BAWE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14931BAWE+T?
MAX14931BAWE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14931BAWE+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 MAX14931BAWE+T?
For technical support, including MAX14931BAWE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14931BAWE+T requirements.
6.How does Aetrix verify that MAX14931BAWE+T is sourced from the original manufacturer or authorized distributors?
All MAX14931BAWE+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 MAX14931BAWE+T meets industry standards.
7.What is the process for return or replacement of MAX14931BAWE+T?
All MAX14931BAWE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14931BAWE+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 MAX14931BAWE+T part is unused and in its original packaging.
Return procedure for MAX14931BAWE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX14931BAWE+T 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…
