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Analog Devices Inc./Maxim Integrated MAX14434FAWE+
- Part No.:
- MAX14434FAWE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX14434FAWE+.pdf
- Description:
- DGT ISOL 5000VRMS 4CH CAN 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,791
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Product details
Overview
MAX14434FAWE+ from Maxim Integrated is a four-channel, unidirectional, high-speed digital galvanic isolator with 5kVRMS isolation rating, 200Mbps maximum data rate, and 1.71V–5.5V dual-supply operation per side. It transfers digital signals across isolated power domains while consuming only 0.58mW per channel at 1Mbps with 1.8V supply, making it ideal for isolated SPI, RS-485, and industrial fieldbus interfaces.
For engineers reviewing the MAX14434FAWE+ datasheet, MAX14434FAWE+ pinout, MAX14434FAWE+ application, or MAX14434FAWE+ equivalent, this device delivers robust 5kVRMS isolation, 50kV/μs CMTI, default-high outputs, and wide-body SOIC packaging - critical for safety-critical industrial, medical, and battery management systems requiring signal integrity under fast transients.
Technical Context
The MAX14434FAWE+ implements capacitive isolation using Maxim's proprietary process, supporting independent 1.71V–5.5V supplies on both sides to enable level translation. Its unidirectional 4-channel configuration (A→B only) is optimized for master-side isolation in SPI bus topologies where side-A inputs drive side-B outputs without feedback.
It features active-high enable pins (ENA/ENB), default-high output state during input open-circuit or undervoltage, and integrated 5µA internal pull-up on ENA. The device meets UL1577 and CSA Bulletin 5A safety standards, with 848VRMS continuous working voltage and ±10kV surge immunity per IEC 61000-4-5.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5kVRMS for 60s - certified for reinforced insulation in safety-critical industrial and medical applications |
| Max Data Rate | 200Mbps - supports high-speed serial protocols including SPI clocked up to 100MHz (2× oversampling) |
| Common-Mode Transient Immunity | 50kV/μs typical - ensures reliable operation in noisy motor drives and power converters |
| Supply Voltage Range | 1.71V to 5.5V per side - enables direct interfacing with 1.8V, 2.5V, 3.3V, and 5V logic domains |
| Propagation Delay | 4.1–20.3ns (VDD-dependent) - low latency preserves timing margins in real-time control loops |
| Output Default State | Default-high - prevents unintended low-state assertion during power-up or fault conditions |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, factory automation, and energy storage systems |
Pinout & Package
MAX14434FAWE+ is housed in a 16-pin wide-body SOIC package (W16MS+12 outline) with 8mm creepage/clearance and CTI ≥600V (Group I). The package supports surface-mount reflow up to +260°C and provides reinforced insulation for functional safety compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDDA) | Side-A Power Supply | 1.71V–5.5V supply for input-side logic; requires local 0.1µF ceramic bypass |
| 2, 8 (GNDA) | Side-A Ground Reference | Return path for side-A signals; must be isolated from GNDB |
| 3 (IN1), 4 (IN2) | Unidirectional Inputs (Side A) | Drive corresponding OUT1/OUT2 on side B; accept 1.71V–5.5V logic levels |
| 5 (IN3), 6 (IN4) | Unidirectional Inputs (Side A) | Drive corresponding OUT3/OUT4 on side B; VIH = 0.7×VDDA, VIL = 0.8V max |
| 7 (ENA) | Active-High Enable (Side A) | Internal 5µA pull-up to VDDA; enables all side-A outputs when high |
| 9, 10 (GNDB) | Side-B Ground Reference | Return path for side-B outputs; galvanically isolated from GNDA |
| 11 (OUT4), 12 (OUT3) | Unidirectional Outputs (Side B) | Driven by IN4/IN3 respectively; VOH ≥ VDDA − 0.4V @ 4mA, VOL ≤ 0.4V @ 4mA |
| 13 (OUT2), 14 (OUT1) | Unidirectional Outputs (Side B) | Driven by IN2/IN1 respectively; support 15pF load with <10.2ns propagation delay at 3.3V |
| 15 (VDDB), 16 (GNDB) | Side-B Power & Ground | Independent 1.71V–5.5V supply domain; enables level-shifting between disparate logic families |
Key Features
| Feature | Design Value |
|---|---|
| 200Mbps data rate | Enables full-duplex SPI at >100MHz clock rates with margin for jitter and skew |
| 50kV/μs CMTI | Prevents output corruption during fast switching events in inverters and motor drives |
| 1.71V–5.5V dual-supply flexibility | Eliminates external level shifters when interfacing 1.8V microcontrollers to 5V fieldbus transceivers |
| Default-high output state | Ensures fail-safe behavior in SPI MISO lines during reset or supply brownout |
| UL1577 & CSA-certified 5kVRMS isolation | Satisfies reinforced insulation requirements for IEC 61800-5-1 and IEC 62368-1 end-equipment |
| −40°C to +125°C operation | Validated for deployment in battery management systems and industrial PLC backplanes |
Applications
| Isolated SPI Interface | Industrial Fieldbus Communication |
|---|---|
|
Use Scenario: Isolating SPI communication between a 3.3V ARM Cortex-M microcontroller and a 5V isolated ADC in a programmable logic controller. IC Role / Device Role / Timing Role: Unidirectional 4-channel isolator routing SCLK, MOSI, MISO, and CS signals across isolation barrier with sub-10ns propagation delay matching. Use Value: Maintains SPI timing integrity at 50MHz clock rates while preventing ground loop noise from corrupting conversion results. |
Use Scenario: Providing galvanic isolation between a fieldbus master node and RS-485 transceiver in a hazardous-area process controller. IC Role / Device Role / Timing Role: Isolating TX/RX data and DE/RE control lines of an RS-485 PHY while preserving signal edge fidelity. Use Value: Enables 25Mbps RS-485 operation with 50kV/μs transient immunity, meeting IEC 61000-4-4 Level 4 requirements. |
| Battery Management Systems | Medical Isolated Data Acquisition |
|
Use Scenario: Isolating cell voltage monitoring signals from a high-voltage battery pack (up to 1000V) to a low-voltage MCU in an EV BMS. IC Role / Device Role / Timing Role: Transmitting precision analog-to-digital converter status and fault flags across 5kVRMS barrier with minimal latency. Use Value: Guarantees safe, uninterrupted communication during fast transients caused by contactor switching or fault events. |
Use Scenario: Isolating ECG front-end sensor data paths in a Class II medical device to meet IEC 60601-1 2×MOPP requirements. IC Role / Device Role / Timing Role: Galvanically separating patient-connected analog acquisition circuitry from USB/Bluetooth host interface. Use Value: Provides certified 5kVRMS isolation with <200ps clock jitter, preserving signal fidelity for diagnostic-grade waveform analysis. |
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, unidirectional, 200Mbps, 5kVRMS, but uses silicon dioxide isolation and has active-low EN | Requires external pull-up on EN; slightly higher propagation delay skew (3.5ns vs. 1.5ns channel-to-channel) | Preferred when existing layout uses Si86xx footprint and system-level EN polarity matches |
| ADUM4401BRWZ | 4-channel, unidirectional, 100Mbps, 5kVRMS, magnetic isolation, default-high outputs | Lower max data rate limits SPI clock to ≤50MHz; higher power consumption at 200Mbps-equivalent speeds | Selected when legacy ADI ecosystem integration or magnetic-isolation EMI profile is prioritized over speed |
Compared with MAX14434FAWE+, Si8641ED-B-IS offers identical speed and isolation but differs in enable polarity and skew performance, while ADUM4401BRWZ trades 2× lower bandwidth for proven magnetic-isolation reliability in ultra-noisy environments - both require validation of EN logic and timing margins in new designs.
Availability
MAX14434FAWE+ is available at Aetrix Electronics and suitable for industrial automation, battery management systems, and medical data acquisition requiring stable component supply, long-term lifecycle support, and traceable RoHS-compliant sourcing.
Supply support for MAX14434FAWE+ 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, communications, and computing markets.
The MAX14434–MAX14436 family was engineered specifically for high-speed, low-power galvanic isolation in space-constrained industrial and medical systems - emphasizing 200Mbps capability, 5kVRMS safety certification, and multi-voltage interoperability.
FAQ
What is the maximum data rate supported by the MAX14434FAWE+?
The MAX14434FAWE+ supports a maximum data rate of 200Mbps under 2.25V–5.5V supply conditions. At 1.71V–1.89V, the guaranteed maximum drops to 150Mbps. This performance enables high-speed SPI, RS-485, and digital I/O isolation while maintaining tight timing budgets in real-time control systems. The MAX14434FAWE+ achieves this with low propagation delay (as low as 4.1ns) and minimal pulse width distortion (≤2ns).
Does the MAX14434FAWE+ support different supply voltages on each side?
Yes, the MAX14434FAWE+ supports independent supply ranges of 1.71V to 5.5V on both side-A (VDDA/GNDA) and side-B (VDDB/GNDB). This allows seamless level translation - for example, interfacing a 1.8V FPGA I/O bank to a 5V RS-485 transceiver without external level shifters. Each side's logic thresholds scale with its local VDD, and the device maintains full 200Mbps operation across the entire voltage range.
What is the default output state of the MAX14434FAWE+?
The MAX14434FAWE+ has a default-high output state: when any input is unpowered, open-circuited, or held below VIH threshold, the corresponding output remains logic-high. This fail-safe behavior prevents unintended low assertions on critical control lines like SPI chip select or RS-485 driver enable, enhancing system robustness during power sequencing or fault conditions.
How is the isolation barrier of the MAX14434FAWE+ certified?
The MAX14434FAWE+ is certified to UL1577 (File E351759) and CSA Bulletin 5A for 5000VRMS isolation voltage (60s test), with a continuous working voltage (VIOWM) of 848VRMS and surge withstand capability of ±10kV (1.2/50μs). Its wide-body SOIC package provides 8mm creepage and clearance, CTI ≥600V (Group I), and meets IEC 60747-5-5 insulation requirements for reinforced insulation in industrial and medical equipment.
What are the key timing parameters of the MAX14434FAWE+ at 3.3V operation?
At VDDA = VDDB = 3.3V, the MAX14434FAWE+ exhibits tPLH/tPHL of 4.2–5.9ns, pulse width distortion ≤2ns, channel-to-channel skew ≤1.5ns, and enable-to-data-valid time of 5.8ns. These values ensure precise timing alignment for high-speed SPI and parallel digital interfaces. The device also delivers 6.5ps RMS clock jitter and <90ps peak eye diagram jitter at 200Mbps - critical for maintaining signal integrity in dense PCB layouts.
MAX14434FAWE+ 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:
- 4/0
- 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 (Max)
- Voltage - Supply:
- 1.71V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX14434FAWE+ FAQ
1.How can I place an order for MAX14434FAWE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14434FAWE+ 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 MAX14434FAWE+ reliable?
The price and inventory of MAX14434FAWE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14434FAWE+ is usually 5 days.
3.What payment methods are accepted for MAX14434FAWE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14434FAWE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14434FAWE+?
MAX14434FAWE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14434FAWE+ 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 MAX14434FAWE+?
For technical support, including MAX14434FAWE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14434FAWE+ requirements.
6.How does Aetrix verify that MAX14434FAWE+ is sourced from the original manufacturer or authorized distributors?
All MAX14434FAWE+ 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 MAX14434FAWE+ meets industry standards.
7.What is the process for return or replacement of MAX14434FAWE+?
All MAX14434FAWE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX14434FAWE+, 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 MAX14434FAWE+ part is unused and in its original packaging.
Return procedure for MAX14434FAWE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX14434FAWE+ Tags
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