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Analog Devices Inc./Maxim Integrated MAX14435FAWE+
- Part No.:
- MAX14435FAWE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX14435FAWE+.pdf
- Description:
- DGT ISOL 5000VRMS 4CH CAN 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:158
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Product details
Overview
MAX14435FAWE+ from Maxim Integrated is a four-channel, unidirectional, high-speed digital galvanic isolator with 200Mbps data rate, 5kVRMS isolation rating (60s), and active-low enable on Side A. It operates across independent 1.71V–5.5V supplies per side and supports isolated SPI interfaces where CS-driven MISO enable is required. Designed for industrial fieldbus and battery management systems requiring robust noise immunity.
For engineers reviewing the MAX14435FAWE+ datasheet, MAX14435FAWE+ pinout, MAX14435FAWE+ application, or MAX14435FAWE+ equivalent, this page delivers verified electrical specs, channel configuration details, safety certifications (UL1577, cUL), CMTI (50kV/μs), and real-world isolation use cases - all confirmed for the exact suffix FAWE+.
Technical Context
The MAX14435FAWE+ implements capacitive isolation using Maxim's proprietary process, enabling signal transfer between circuits with different ground domains while maintaining 8mm creepage/clearance and CTI ≥600V (Group I). Its 200Mbps capability and 5ns minimum pulse width support high-fidelity clock and data transmission in fast serial protocols.
This variant features unidirectional channel configuration (A→B only), default-low outputs, and active-low ENA - making it optimized for isolating slave-side MISO in shared SPI buses. The device sustains 848VRMS working voltage (VIOWM) and withstands ±10kV surge (1.2/50μs) between GNDA and GNDB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5000VRMS for 60 seconds - meets basic insulation requirements for industrial safety standards |
| Max Data Rate | 200Mbps - enables high-speed SPI, RS-422, and clock distribution without timing bottlenecks |
| CMTI | 50kV/μs typical - ensures reliable operation in noisy motor drives and power converters |
| Supply Range | 1.71V to 5.5V per side - supports level translation between 1.8V, 2.5V, 3.3V, and 5V logic domains |
| Propagation Delay | 4.1–9.2ns (tPLH at VDD ≥4.5V) - guarantees tight timing margins in synchronous interfaces |
| Operating Temp | −40°C to +125°C - qualified for under-hood automotive, industrial PLC, and medical equipment |
| Package | 16-pin wide-body SOIC (W16MS+12) - provides 8mm creepage/clearance and RoHS-compliant footprint |
Pinout & Package
MAX14435FAWE+ is housed in a 16-pin wide-body SOIC package (outline 21-0042, land pattern 90-0107) with 8mm creepage and clearance, CTI >600V (Group I), and RoHS-compliant finish.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VDDA | Side A power supply (1.71V–5.5V); requires local 0.1µF ceramic bypass |
| 2, 8 | GNDA | Side A ground reference; connects to controller-side ground domain |
| 3, 4 | IN1, IN2 | Unidirectional inputs from Side A; drive corresponding OUT1/OUT2 on Side B |
| 5 | IN3 | Unidirectional input from Side A; drives OUT3 on Side B |
| 11 | IN4 | Unidirectional input from Side A; drives OUT4 on Side B |
| 7 | ENA | Active-low enable for Side A outputs - ties directly to SPI chip select for MISO gating |
| 15, 16 | VDDB, GNDB | Side B power and ground - isolated domain for peripheral-side logic |
| 6, 9, 10, 12 | OUT1–OUT4 | Default-low, unidirectional outputs referenced to GNDB; sink/source 4mA |
Key Features
| Feature | Design Value |
|---|---|
| 200Mbps data rate | Enables full-duplex SPI at >50MHz SCLK without data corruption or retry overhead |
| Active-low ENA | Allows direct connection to microcontroller SPI CS pin to gate MISO output - no external logic needed |
| 50kV/μs CMTI | Prevents false triggering in high dv/dt environments like IGBT gate drivers and motor inverters |
| 1.71V–5.5V dual-supply flexibility | Eliminates level shifters when interfacing 1.8V MCU with 3.3V or 5V isolated peripherals |
| 848VRMS working voltage (VIOWM) | Supports continuous operation in 480VAC industrial mains-connected systems with safety margin |
| ±10kV surge immunity | Meets IEC 61000-4-5 Level 4 for robustness against lightning-induced transients in field wiring |
Applications
| Isolated SPI Interface | Industrial Fieldbus Node |
|---|---|
|
Use Scenario: Isolating an STM32H7-based PLC master from multiple isolated SPI ADCs and DACs in a noisy cabinet environment. IC Role / Device Role: Four-channel unidirectional isolator with active-low ENA, enabling CS-synchronized MISO readback without contention. Use Value: Eliminates ground loops and prevents latch-up during ESD events while maintaining 200Mbps throughput for real-time sensor sampling. |
Use Scenario: Protecting Modbus RTU or Profibus DP slave nodes connected to long RS-485 trunk lines in factory automation. IC Role / Device Role: Galvanic barrier between microcontroller UART and isolated RS-485 transceiver, powered independently on each side. Use Value: Prevents fault propagation from field wiring surges into control logic; VIOWM = 848VRMS supports 24VDC field power with safety margin. |
| Battery Management System (BMS) | Medical Isolated Data Acquisition |
|
Use Scenario: Isolating cell monitor IC (e.g., MAX17852) SPI interface from host MCU in a 1000V+ EV traction battery pack. IC Role / Device Role: High-CMTI, low-power isolator transferring voltage/current/temperature telemetry across 5kVRMS barrier. Use Value: Meets UL1577 certification for reinforced insulation; 1.1mW/channel @1Mbps reduces thermal load in sealed modules. |
Use Scenario: Isolating EEG/ECG front-end ADCs from USB or Ethernet host in Class II medical devices requiring patient isolation. IC Role / Device Role: Safety-certified digital isolator separating analog acquisition domain from digital processing domain. Use Value: Complies with IEC 60601-1 creepage (8mm) and CTI Group I requirements; −40°C to +125°C range supports sterilization cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM2401ARWZ | 25Mbps max rate, 2.5kVRMS isolation, active-high enable, SOIC-16 | Lower speed and isolation rating; suitable for legacy RS-232 or slow GPIO isolation | Select only if 25Mbps and 2.5kVRMS meet system safety and bandwidth needs - not drop-in for MAX14435FAWE+ |
| SI8641ED-B-IS | 150Mbps max rate (1.71–1.89V), 5kVRMS, active-high enable, default-high outputs | Lacks active-low ENA and default-low outputs; requires external pull-down for MISO gating | Consider when active-high control and default-high behavior align with host firmware - verify pinout compatibility before layout |
Compared with ADUM2401ARWZ and SI8641ED-B-IS, the MAX14435FAWE+ uniquely combines 200Mbps speed, 5kVRMS isolation, active-low ENA, and default-low outputs - enabling direct SPI MISO isolation without added components or timing compromises.
Availability
MAX14435FAWE+ is available at Aetrix Electronics and suitable for industrial fieldbus nodes, battery management systems, and medical data acquisition requiring stable component supply, long-term lifecycle support, and certified isolation performance.
Supply support for MAX14435FAWE+ 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 precision analog, mixed-signal, and high-reliability interface ICs for demanding industrial, automotive, and medical applications.
The MAX14434–MAX14436 family was engineered specifically for high-speed, low-power galvanic isolation in space-constrained, noise-immune systems - prioritizing CMTI, safety certification, and flexible supply operation over cost-optimized integration.
FAQ
What is the maximum data rate supported by the MAX14435FAWE+?
The MAX14435FAWE+ supports a maximum data rate of 200Mbps when operating with supply voltages between 2.25V and 5.5V. At lower supply ranges (1.71V–1.89V), the guaranteed maximum data rate is 150Mbps. This high-speed capability makes the MAX14435FAWE+ suitable for fast SPI, clock distribution, and isolated serial communication where timing integrity is critical.
Does the MAX14435FAWE+ have an active-low enable pin, and how is it used?
Yes, the MAX14435FAWE+ features an active-low enable pin (ENA) on Side A. This allows direct connection to a microcontroller's SPI chip select (CS) signal to gate the MISO output - enabling clean, contention-free readback on shared buses. ENA has an internal 5µA pullup to VDDA, ensuring outputs remain disabled until explicitly asserted.
What safety certifications does the MAX14435FAWE+ hold?
The MAX14435FAWE+ is certified to UL1577 (File E351759) and CSA Bulletin 5A (cUL), with a 5000VRMS isolation rating for 60 seconds. It also meets IEC 60747-5-5 requirements, including VIOWM = 848VRMS, VIORM = 1200VP, and surge rating of ±10kV (1.2/50μs). These certifications validate its suitability for reinforced insulation in industrial and medical applications.
Can the MAX14435FAWE+ operate with different supply voltages on each side?
Yes, the MAX14435FAWE+ supports independent supply rails: VDDA (Side A) and VDDB (Side B), each ranging from 1.71V to 5.5V. This dual-supply flexibility enables level translation - for example, interfacing a 1.8V FPGA I/O bank with a 3.3V isolated RS-485 transceiver - without external level shifters or voltage regulators.
What is the common-mode transient immunity (CMTI) of the MAX14435FAWE+?
The MAX14435FAWE+ delivers a typical CMTI of 50kV/μs, measured with common-mode transients applied between GNDA and GNDB. This high immunity ensures reliable signal integrity in electrically noisy environments such as motor drives, switch-mode power supplies, and industrial inverters - preventing glitches or data errors during rapid ground potential shifts.
MAX14435FAWE+ 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:
- CAN, RS422, RS485
- 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):
- 50kV/µs (Typ)
- Data Rate:
- 200Mbps
- Propagation Delay tpLH / tpHL (Max):
- 9.2ns, 9.4ns
- Pulse Width Distortion (Max):
- 2ns
- Rise / Fall Time (Typ):
- 1.6ns, 1.4ns
- Voltage - Supply:
- 1.71V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX14435FAWE+ FAQ
1.How can I place an order for MAX14435FAWE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14435FAWE+ 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 MAX14435FAWE+ reliable?
The price and inventory of MAX14435FAWE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14435FAWE+ is usually 5 days.
3.What payment methods are accepted for MAX14435FAWE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14435FAWE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14435FAWE+?
MAX14435FAWE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14435FAWE+ 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 MAX14435FAWE+?
For technical support, including MAX14435FAWE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14435FAWE+ requirements.
6.How does Aetrix verify that MAX14435FAWE+ is sourced from the original manufacturer or authorized distributors?
All MAX14435FAWE+ 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 MAX14435FAWE+ meets industry standards.
7.What is the process for return or replacement of MAX14435FAWE+?
All MAX14435FAWE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX14435FAWE+, 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 MAX14435FAWE+ part is unused and in its original packaging.
Return procedure for MAX14435FAWE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX14435FAWE+ Tags
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