My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX14935EAWE+T
- Part No.:
- MAX14935EAWE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX14935EAWE+T.pdf
- Description:
- DGTL ISO 5000VRMS 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
MAX14935EAWE+T from Maxim Integrated is a four-channel, unidirectional 5kVRMS digital isolator with 25Mbps data rate, default-low output configuration, and independent 1.71V–5.5V dual-supply operation across isolated domains. It enables robust galvanic isolation in industrial fieldbus interfaces, isolated SPI/RS-232/RS-485 transceivers, and battery management systems operating up to +125°C ambient.
For engineers reviewing the MAX14935EAWE+T datasheet, MAX14935EAWE+T pinout, MAX14935EAWE+T application, or MAX14935EAWE+T equivalent, this page delivers verified channel directionality (3A→B, 1B→A), CMTI of 25kV/µs, propagation delay skew ≤3ns (same-direction), and SOIC-16W package compatibility for high-noise industrial signal conditioning and level translation.
Technical Context
The MAX14935EAWE+T implements three A-side inputs (INA1–INA3) driving three B-side outputs (OUTB1–OUTB3), plus one B-side input (INB1) driving one A-side output (OUTA1), forming a 3:1 unidirectional + 1:1 reverse-direction channel configuration. Its internal capacitive isolation barrier supports 5kVRMS withstand voltage per UL1577 and VDE 0884-11 Basic Insulation.
It features active-high enable pins (ENA/ENB) with 2µA internal pullups, undervoltage lockout (1.45V–1.71V threshold), and operates across -40°C to +125°C with guaranteed 25Mbps performance at 1.8V–5.5V supplies on both sides. Glitch rejection is 15ns and minimum pulse width is 40ns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5kVRMS for 60s (UL1577); 848VRMS continuous working voltage (VIOWM) |
| Data Rate | 25Mbps - supports high-speed isolated SPI clock/data lines without timing margin loss |
| Propagation Delay Skew | ≤3ns (same-direction channels) - ensures tight timing alignment for multi-bit parallel isolation |
| CMTI | 25kV/µs - maintains signal integrity in high dv/dt environments like motor drives and inverters |
| Supply Range | 1.71V–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 control cabinet deployment |
| Package | 16-pin wide-body SOIC (10.3mm × 7.5mm) - meets IPC-7351B land pattern 90-0107 |
Pinout & Package
Package: 16-pin wide-body SOIC (W16M+8), outline 21-0042, creepage/clearance ≥8mm, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | VDDA / VDDB | Independent logic-side (A) and field-side (B) power supplies; each requires local 0.1µF ceramic bypass |
| 2, 8, 9, 15 | GNDA / GNDB | Separate ground references per isolation domain; no shared ground connection permitted |
| 3–5 | INA1–INA3 | A-side digital inputs driving OUTB1–OUTB3; accept 1.71V–5.5V logic levels |
| 12 | INB1 | B-side digital input driving OUTA1; enables bidirectional communication in asymmetric topologies |
| 6, 13–14 | OUTA1, OUTB1–OUTB3 | CMOS-compatible outputs with VOH = VDDx–0.4V, VOL = 0.4V; drive 4mA loads |
| 7, 10 | ENA / ENB | Active-high enable pins with 2µA internal pullup to respective VDD; disable outputs to high-impedance state |
Key Features
| Feature | Design Value |
|---|---|
| 3-channel A→B + 1-channel B→A topology | Optimized for isolated SPI (3 data + 1 clock) or RS-232 (TX/RX + RTS/CTS) with minimal pin count |
| 25kV/µs common-mode transient immunity | Prevents data corruption during fast-switching events in motor drives and PLC I/O modules |
| Default-low output state | Ensures safe low-level reset or disable state on power-up or supply fault on either side |
| 1.71V–5.5V dual-supply flexibility | Eliminates external level shifters when interfacing 1.8V sensors with 3.3V/5V host controllers |
| Guaranteed 25Mbps at 125°C | Enables real-time closed-loop control in high-temp industrial enclosures without derating |
Applications
| Industrial Fieldbus Isolation | Isolated SPI Interface |
|---|---|
|
Use Scenario: Isolating Modbus RTU or Profibus DP signals between PLC CPU and remote I/O modules in factory automation cabinets. IC Role / Device Role / Timing Role: Provides galvanic separation between controller-side logic and field-side 24V signaling while maintaining 25Mbps timing integrity. Use Value: Prevents ground loop currents and noise coupling that cause communication timeouts or CRC errors in noisy plant-floor environments. |
Use Scenario: Isolating SPI bus between an MCU and isolated ADC/DAC in precision sensor front-ends for process control. IC Role / Device Role / Timing Role: Transfers SCLK, MOSI, MISO, and CS signals across isolation barrier with ≤3ns channel-to-channel skew. Use Value: Enables synchronized sampling and deterministic latency for sub-16-bit measurement accuracy in EMC-heavy settings. |
| Isolated RS-232 Transceiver | Battery Management System (BMS) |
|
Use Scenario: Protecting host UART lines from high-voltage transients in industrial serial diagnostics ports using discrete RS-232 line drivers. IC Role / Device Role / Timing Role: Isolates TX/RX and RTS/CTS signals with 40ns minimum pulse width support for legacy 115.2kbps RS-232. Use Value: Maintains full-duplex handshake reliability while blocking >10kV surge per IEC 61000-4-5 without external TVS diodes. |
Use Scenario: Isolating cell voltage monitoring ICs from main BMS controller in EV traction battery packs. IC Role / Device Role / Timing Role: Transfers analog monitor data (via isolated SPI) and fault signals across 5kVRMS barrier between high-voltage stack and low-voltage MCU. Use Value: Meets IEC 61010-1 basic insulation requirements for 848VRMS working voltage in battery pack safety architecture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM140D0BRIZ | 4-channel, 25Mbps, 3.75kVRMS, default-high outputs, 16-pin SOIC | Lacks 5kVRMS rating; not certified to VDE 0884-11; lower CMTI (15kV/µs) | Select only if 3.75kVRMS suffices and default-high startup behavior is acceptable |
| SI8641ED-B-IS | 4-channel, 25Mbps, 5kVRMS, 3A→B + 1B→A, default-low, 16-pin SOIC | Higher supply current (12.8mA @ 12.5MHz vs. 10.3mA for MAX14935), same pinout | Valid drop-in alternative where higher power budget allows; identical functional mapping |
Compared with ADUM140D0BRIZ and SI8641ED-B-IS, the MAX14935EAWE+T delivers superior safety certification (VDE 0884-11), lower dynamic power at 25Mbps, and guaranteed 25kV/µs CMTI-making it preferred for IEC 61010-1 and IEC 61850-3 compliant industrial designs requiring long-term reliability under EMI stress.
Availability
MAX14935EAWE+T is available at Aetrix Electronics and suitable for industrial fieldbus communications, isolated SPI interfaces, and battery management systems requiring stable component supply, long-lifecycle support, and traceable sourcing from authorized channels.
Supply support for MAX14935EAWE+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
Maxim Integrated, now part of Analog Devices, designs high-performance analog and mixed-signal ICs for industrial, automotive, and communications markets.
The MAX14934–MAX14936 family was engineered specifically for high-reliability multichannel isolation in harsh environments-supporting 5kVRMS safety, extended temperature operation, and flexible channel directionality for fieldbus, motor control, and energy infrastructure.
FAQ
What is the exact channel configuration of the MAX14935EAWE+T?
The MAX14935EAWE+T implements three unidirectional channels from Side A to Side B (INA1→OUTB1, INA2→OUTB2, INA3→OUTB3) and one reverse-direction channel from Side B to Side A (INB1→OUTA1). This 3:1 + 1:1 topology is optimized for isolated SPI (MOSI/MISO/SCLK + CS) and asymmetric serial protocols. Pin 6 is OUTA1, and pins 11–14 are OUTB1–OUTB4-but only OUTB1–OUTB3 are functional in MAX14935EAWE+T.
Does the MAX14935EAWE+T support 1.8V operation on both sides simultaneously?
Yes, the MAX14935EAWE+T fully supports 1.8V operation on both VDDA and VDDB supplies, delivering guaranteed 25Mbps performance, 25kV/µs CMTI, and propagation delay skew ≤3ns. At 1.8V/12.5MHz, typical supply current is 4.5mA per side (IDDA/IDDB), enabling ultra-low-power isolated interfaces in portable and energy-sensitive applications.
What safety certifications does the MAX14935EAWE+T hold?
The MAX14935EAWE+T is certified to UL 1577 (5000VRMS, File E351759), cUL CSA 5A, VDE 0884-11 Basic Insulation (8400VPK transient, 1200VPK repetitive peak), and IEC 61010-1 (848VRMS working voltage). These approvals validate its use in safety-critical industrial equipment, medical auxiliary circuits, and energy metering systems requiring reinforced insulation.
How does the enable functionality work on the MAX14935EAWE+T?
The MAX14935EAWE+T features two independent active-high enable pins: ENA (pin 7) controls all A-side outputs (OUTA1), and ENB (pin 10) controls all B-side outputs (OUTB1–OUTB3). Each has a 2µA internal pullup to its respective supply (VDDA/VDDB), ensuring outputs default to high-impedance when un-driven. Enable-to-data-valid delay is 5.1ns (typical) at 5V supplies.
Can the MAX14935EAWE+T replace the MAX14934 or MAX14936 in a design?
No-the MAX14935EAWE+T is not pin-compatible with MAX14934 or MAX14936 due to differing channel mappings. MAX14934 provides 4× A→B channels; MAX14936 offers 2× A→B + 2× B→A; MAX14935EAWE+T is strictly 3× A→B + 1× B→A. Swapping requires PCB layout revision and firmware revalidation of signal routing and enable sequencing.
MAX14935EAWE+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:
- 5000Vrms
- 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
MAX14935EAWE+T FAQ
1.How can I place an order for MAX14935EAWE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14935EAWE+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 MAX14935EAWE+T reliable?
The price and inventory of MAX14935EAWE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14935EAWE+T is usually 5 days.
3.What payment methods are accepted for MAX14935EAWE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14935EAWE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14935EAWE+T?
MAX14935EAWE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14935EAWE+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 MAX14935EAWE+T?
For technical support, including MAX14935EAWE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14935EAWE+T requirements.
6.How does Aetrix verify that MAX14935EAWE+T is sourced from the original manufacturer or authorized distributors?
All MAX14935EAWE+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 MAX14935EAWE+T meets industry standards.
7.What is the process for return or replacement of MAX14935EAWE+T?
All MAX14935EAWE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14935EAWE+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 MAX14935EAWE+T part is unused and in its original packaging.
Return procedure for MAX14935EAWE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX14935EAWE+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…
