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Analog Devices Inc./Maxim Integrated MAX14934FAWE+
- Part No.:
- MAX14934FAWE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX14934FAWE+.pdf
- Description:
- DGTL ISO 5000VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:12,999
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Product details
Overview
MAX14934FAWE+ from Maxim Integrated is a four-channel, unidirectional 5kVRMS digital isolator with 150Mbps data rate, 1.71V–5.5V dual-supply operation, and default-low output configuration. It provides galvanic isolation between microcontroller GPIO and industrial fieldbus interfaces while operating across –40°C to +125°C ambient temperature.
For engineers reviewing the MAX14934FAWE+ datasheet, MAX14934FAWE+ pinout, MAX14934FAWE+ application, or MAX14934FAWE+ equivalent, this device supports high-speed isolated SPI/RS-485 systems requiring low propagation delay skew (<1ns typical), robust CMTI (25kV/µs), and safety-certified insulation for medical and battery management use cases.
Technical Context
The MAX14934FAWE+ implements capacitive isolation using Maxim's proprietary silicon-dioxide barrier technology, enabling 5kVRMS withstand voltage per UL1577 and VDE 0884-11 Basic Insulation. Its architecture features four independent A→B unidirectional channels with integrated enable control on both sides.
It supports asymmetric supply voltages (e.g., 1.8V on Side A, 3.3V on Side B), delivers sub-8ns propagation delay at 150Mbps, and maintains <1ps pulse-width distortion under 5V operation - critical for timing-sensitive isolated communication links in motor drives and PLC I/O modules.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5000VRMS for 60s (VISO); enables single-protection safety compliance per UL/cUL/VDE standards |
| Data Rate | 150Mbps maximum - supports high-speed isolated SPI clock domains and real-time sensor data acquisition |
| Propagation Delay | 5.1ns (tPLH, typ) at 5V - ensures tight timing alignment in multi-channel synchronous interfaces |
| CMTI | 25kV/µs minimum - suppresses noise-induced errors in noisy industrial environments with fast transients |
| Supply Range | 1.71V–5.5V per side - allows direct interfacing with 1.8V FPGAs and 5V microcontrollers without level shifters |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive, industrial motor control, and battery pack monitoring |
| Package | 16-pin wide-body SOIC (10.3mm × 7.5mm) - provides 8mm creepage/clearance for reinforced insulation layout |
Pinout & Package
MAX14934FAWE+ uses a 16-pin wide-body SOIC package (W16M+8 outline, 10.3mm × 7.5mm) with 8mm minimum creepage and clearance distances, compliant with DIN VDE 0884-11 Basic Insulation requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | VDDA / VDDB | Independent power supplies for isolated sides - each requires local 0.1µF ceramic bypass to GNDA/GNDB |
| 2, 8, 9, 15 | GNDA / GNDB | Separate ground references - no shared ground path; essential for breaking ground loops in isolated systems |
| 3–6 | INA1–INA4 | Side-A logic inputs driving OUTB1–OUTB4 - support 1.71V–5.5V CMOS levels with 410mV hysteresis |
| 10, 7 | ENB / ENA | Active-high enable pins with internal 2µA pullup - allow channel gating without external logic |
| 11–14 | OUTB1–OUTB4 | Side-B outputs with default-low state when input unpowered - prevents floating states during power sequencing |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive Isolation Barrier | SiO₂-based dielectric with 2pF inter-side capacitance - minimizes signal coupling and EMI susceptibility |
| Low-Power High-Speed Operation | 14.4mA typical total supply current at 150Mbps/3.3V - enables dense multi-isolator designs without thermal derating |
| Ultra-Low Propagation Skew | 0.9ns channel-to-channel skew (same direction) - preserves timing integrity in parallel data buses like isolated ADC interfaces |
| Safety-Certified Insulation | UL1577, cUL, VDE 0884-11, IEC 60601-1 - certified for medical equipment and industrial safety-critical applications |
| Robust Transient Immunity | ±10kV surge per IEC 61000-4-5 - protects against lightning-induced surges in outdoor fieldbus installations |
Applications
| Industrial Fieldbus I/O | Isolated SPI Interface |
|---|---|
|
Use Scenario: Digital I/O expansion module in programmable logic controllers handling 24V sensor/actuator signals. IC Role / Device Role / Timing Role: Isolates microcontroller GPIO from high-voltage field side while transmitting status/control bits at up to 150Mbps. Use Value: Prevents ground-loop noise corruption and enables safe hot-swap maintenance without system shutdown. |
Use Scenario: Isolating SPI bus between host MCU and isolated ADC/DAC in motor drive feedback circuits. IC Role / Device Role / Timing Role: Transfers SCLK, MOSI, MISO, and CS signals across isolation barrier with <8ns propagation delay and <1ns skew. Use Value: Maintains precise sampling timing and eliminates clock-domain metastability in closed-loop control systems. |
| Battery Management Systems | Medical Patient Monitoring |
|
Use Scenario: Cell voltage and temperature monitoring in EV battery packs with >1000V common-mode potential. IC Role / Device Role / Timing Role: Isolates analog front-end data acquisition ICs from main controller via SPI or UART, supporting 125°C operation. Use Value: Enables accurate cell balancing while meeting IEC 60601-1 MOOP requirements for patient-connected devices. |
Use Scenario: Isolating ECG/EEG front-end amplifiers from digital processing unit in bedside monitors. IC Role / Device Role / Timing Role: Provides 5kVRMS galvanic isolation for patient-connected analog signal paths with 25kV/µs CMTI. Use Value: Guarantees electrical safety compliance and prevents leakage currents exceeding 10µA patient limit. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM4402BRWZ | 4-channel, 100Mbps, 3.75kVRMS, 16-pin SOIC, default-high outputs | Lacks 150Mbps capability and 5kVRMS rating; not certified to VDE 0884-11 | Choose for cost-sensitive industrial automation where 100Mbps suffices and VDE certification is optional |
| SI8642ED-B-IS | 4-channel, 150Mbps, 5kVRMS, 16-pin SOIC, default-low outputs, 2.5V–5.5V supply | No 1.71V operation; higher typical supply current (18.9mA at 150Mbps/1.8V) | Prefer when design already uses ≥2.5V supplies and requires same speed/safety but different supplier ecosystem |
Compared with ADUM4402BRWZ and SI8642ED-B-IS, the MAX14934FAWE+ uniquely combines 150Mbps speed, 1.71V minimum supply, VDE 0884-11 certification, and default-low output behavior - making it optimal for next-generation battery management and high-reliability medical isolation where low-voltage compatibility and regulatory compliance are non-negotiable.
Availability
MAX14934FAWE+ is available at Aetrix Electronics and suitable for industrial fieldbus I/O, isolated SPI interfaces, and battery management systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MAX14934FAWE+ 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 and mixed-signal ICs for industrial, automotive, and medical applications with emphasis on reliability and safety certification.
The MAX14934–MAX14936 family was engineered specifically for high-speed, safety-critical isolation in harsh environments - delivering 5kVRMS rating, 150Mbps throughput, and extended temperature operation in a single wide-body SOIC package.
FAQ
What is the maximum data rate supported by the MAX14934FAWE+?
The MAX14934FAWE+ 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 performance is documented in the MAX1493_C/F dynamic characteristics table of the official datasheet, with propagation delay as low as 5.1ns (typ) at 5V.
Does the MAX14934FAWE+ have default-high or default-low outputs?
The MAX14934FAWE+ has default-low outputs - meaning each OUTBx pin transitions to logic low when its corresponding INA_x input is unpowered or floating. This behavior is confirmed in the General Description section and Product Selector Guide, distinguishing it from MAX14935/MAX14936 variants with default-high or bidirectional configurations.
Which safety certifications apply to the MAX14934FAWE+?
The MAX14934FAWE+ is certified to UL1577 (File E351759), CSA Bulletin 5A (cUL), and VDE 0884-11:2017-01 for Basic Insulation. It meets IEC 60601-1 (ed. 3) for medical equipment and IEC 61010-1 for test/measurement devices, with 5000VRMS isolation voltage and 1200VP repetitive peak rating.
Can the MAX14934FAWE+ operate with different supply voltages on each side?
Yes, the MAX14934FAWE+ supports independent 1.71V–5.5V supplies on Side A (VDDA/GNDA) and Side B (VDDB/GNDB), enabling level translation between 1.8V microcontrollers and 3.3V or 5V peripherals. This dual-supply flexibility is explicitly specified in the DC Electrical Characteristics table and General Description.
What is the common-mode transient immunity (CMTI) of the MAX14934FAWE+?
The MAX14934FAWE+ guarantees a minimum CMTI of 25kV/µs, measured with transient generator connected between GNDA and GNDB at 1000V common-mode voltage. This value is consistent across all data-rate variants (1/25/150Mbps) and is validated per IEC 61000-4-4 methodology.
MAX14934FAWE+ 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:
- General Purpose
- 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):
- 25kV/µs (Typ)
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 7.5ns, 7.4ns
- Pulse Width Distortion (Max):
- 1ns
- 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
MAX14934FAWE+ FAQ
1.How can I place an order for MAX14934FAWE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14934FAWE+ 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 MAX14934FAWE+ reliable?
The price and inventory of MAX14934FAWE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14934FAWE+ is usually 5 days.
3.What payment methods are accepted for MAX14934FAWE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14934FAWE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14934FAWE+?
MAX14934FAWE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14934FAWE+ 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 MAX14934FAWE+?
For technical support, including MAX14934FAWE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14934FAWE+ requirements.
6.How does Aetrix verify that MAX14934FAWE+ is sourced from the original manufacturer or authorized distributors?
All MAX14934FAWE+ 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 MAX14934FAWE+ meets industry standards.
7.What is the process for return or replacement of MAX14934FAWE+?
All MAX14934FAWE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX14934FAWE+, 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 MAX14934FAWE+ part is unused and in its original packaging.
Return procedure for MAX14934FAWE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX14934FAWE+ Tags
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