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Analog Devices Inc./Maxim Integrated MAX14934CAWE+
- Part No.:
- MAX14934CAWE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX14934CAWE+.pdf
- Description:
- DIGITAL ISOLATOR 150MBPS 4CH
- Quantity:
- Payment:
- Shipping:
Inventory:113
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Product details
Overview
MAX14934CAWE+ from Maxim Integrated is a four-channel, unidirectional 5kVRMS digital isolator with 150Mbps data rate, 1.71V–5.5V dual-supply operation per side, and default-low output configuration. It provides galvanic isolation between microcontroller GPIO and industrial fieldbus interfaces operating up to +125°C ambient.
For engineers reviewing the MAX14934CAWE+ datasheet, MAX14934CAWE+ pinout, MAX14934CAWE+ application, or MAX14934CAWE+ equivalent, this device supports high-speed isolated SPI/RS-485 communication, level translation across power domains, and robust noise immunity in battery management and medical systems.
Technical Context
The MAX14934CAWE+ implements capacitive isolation with proprietary silicon-dioxide barrier technology, supporting asymmetric supply voltages (e.g., 1.8V on Side A, 3.3V on Side B). Its architecture includes independent enable controls (ENA/ENB), input hysteresis of 80mV, and guaranteed CMTI ≥25kV/µs for noisy industrial environments.
It features fixed unidirectional channel mapping: four inputs on Side A (INA1–INA4) drive four outputs on Side B (OUTB1–OUTB4), with no reverse-path channels. The device operates across -40°C to +125°C and meets VDE 0884-11 Basic Insulation, UL1577, and IEC 61000-4-5 surge standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5000VRMS withstand for 60s; enables safety-critical industrial and medical isolation barriers |
| Data Rate | 150Mbps maximum; supports high-speed isolated SPI clocking and real-time sensor data transfer |
| Supply Range | 1.71V–5.5V per side; allows direct interfacing with 1.8V FPGAs and 5V PLC logic without level shifters |
| Propagation Delay | 5.1ns (typ) at 5V; ensures timing-critical control loops meet sub-10ns latency budgets |
| CMTI | ≥25kV/µs; rejects fast transients in motor drives and HV battery monitoring systems |
| Operating Temp | -40°C to +125°C; qualified for under-hood automotive and factory-floor industrial deployment |
| Package | 16-pin wide-body SOIC (10.3mm × 7.5mm); provides 8mm creepage/clearance for reinforced insulation compliance |
Pinout & Package
Package: 16-pin wide-body SOIC (W16M+8), 10.3mm × 7.5mm body, 8mm minimum creepage and clearance, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | VDDA / VDDB | Independent power supplies for isolated sides; each requires local 0.1µF ceramic bypass |
| 2, 8, 9, 15 | GNDA / GNDB | Dedicated ground references per side; must not be shorted externally |
| 3–6 | INA1–INA4 | Unidirectional CMOS inputs on Side A; drive OUTB1–OUTB4 respectively |
| 10, 7 | ENB / ENA | Active-high enables with internal 2µA pullup; disable outputs to high-impedance state |
| 11–14 | OUTB1–OUTB4 | CMOS outputs on Side B; default-low behavior when input unpowered |
| 12 | OUTB3 | Output corresponding to INA3; shares same unidirectional path as other OUTB pins |
Key Features
| Feature | Design Value |
|---|---|
| 150Mbps data rate | Enables full-duplex isolated SPI at >30MHz SCLK without signal degradation |
| 25kV/µs CMTI | Prevents data corruption during rapid common-mode voltage shifts in motor inverters |
| 1.71V–5.5V dual supply | Eliminates external level translators when connecting 1.8V sensors to 5V host controllers |
| Default-low output state | Ensures safe low-level reset state during power-up or fault conditions in safety-critical IO |
| VDE 0884-11 certification | Meets basic insulation requirements for medical equipment (IEC 60601-1) and industrial PLCs |
Applications
| Industrial Fieldbus Isolation | Isolated SPI Interface |
|---|---|
Use Scenario: RS-485 transceivers in factory automation PLCs exposed to 2kV EFT and 10kV surge events. IC Role / Device Role / Timing Role: Digital isolator bridging MCU UART and RS-485 PHY, providing galvanic separation and noise immunity. Use Value: Maintains 150Mbps link integrity under 25kV/µs transients, eliminating bus lockups in harsh EMI environments. | Use Scenario: High-speed ADC/DAC interface in programmable logic controller (PLC) analog I/O modules. IC Role / Device Role / Timing Role: Unidirectional isolator for SPI clock (SCLK), MOSI, and chip select (CS) signals between 3.3V FPGA and 5V ADC. Use Value: Sub-10ns propagation delay skew ensures setup/hold timing margins are preserved at 50MHz SPI clock rates. |
| Battery Management Systems | Medical Patient Monitoring |
Use Scenario: Cell voltage monitoring in 800V EV battery packs where isolation prevents ground loop currents. IC Role / Device Role / Timing Role: Isolating digital status signals (e.g., fault flags, SOC alerts) from high-voltage battery controller to low-voltage MCU. Use Value: 5kVRMS rating and 848VRMS working voltage support direct integration into Class I medical and automotive BMS designs. | Use Scenario: ECG/EEG front-end modules requiring patient-isolated digital data transmission to host processor. IC Role / Device Role / Timing Role: Four-channel isolator separating analog front-end ADC outputs and control lines from main system processor. Use Value: VDE-certified basic insulation and 125°C operation ensure compliance with IEC 60601-1 ed.3 for 2 MOOP applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISO6741RWER | Four-channel, 5000VRMS, 50Mbps max data rate; uses capacitive isolation but lacks 150Mbps capability | Suitable for lower-speed industrial IO where 150Mbps is unnecessary; smaller 16-pin SOIC package (7.5mm × 10.3mm) | Select when cost sensitivity outweighs speed requirement and existing layout accommodates identical footprint |
| ADUM2401ARWZ | Four-channel, 2500VRMS, 1Mbps max data rate; magnetic coupling, higher propagation delay (>30ns) | Applicable only in non-safety-critical, low-speed applications such as legacy sensor interfaces | Choose only if design tolerates reduced isolation rating and cannot accommodate 150Mbps timing constraints |
Compared with ISO6741RWER and ADUM2401ARWZ, the MAX14934CAWE+ delivers 3× higher data throughput and 2× higher isolation rating, enabling next-generation high-resolution isolated data acquisition while maintaining drop-in compatibility with wide-body SOIC layouts.
Availability
MAX14934CAWE+ is available at Aetrix Electronics and suitable for industrial fieldbus communications, isolated SPI interfaces, battery management systems, and medical patient monitoring equipment requiring stable component supply and long-term lifecycle assurance.
Supply support for MAX14934CAWE+ 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 healthcare applications.
The MAX14934CAWE+ belongs to the MAX14934–MAX14936 family of high-speed digital isolators engineered specifically for demanding industrial automation and medical systems requiring certified 5kVRMS isolation and 150Mbps performance.
FAQ
What is the maximum data rate supported by the MAX14934CAWE+?
The MAX14934CAWE+ supports a maximum data rate of 150Mbps, verified across all supply voltage ranges (1.71V–5.5V) and temperature extremes (-40°C to +125°C). This specification is measured with CL = 15pF and applies to all four unidirectional channels simultaneously, making the MAX14934CAWE+ suitable for high-speed isolated SPI and real-time sensor interfaces.
Does the MAX14934CAWE+ support bidirectional communication?
No, the MAX14934CAWE+ is strictly unidirectional: Side A inputs (INA1–INA4) drive Side B outputs (OUTB1–OUTB4) only. For bidirectional applications like I²C, Maxim recommends the MAX14937. The MAX14934CAWE+ pinout and functional diagram confirm no reverse-path channels exist, and its datasheet explicitly states it supports only unidirectional configurations.
What safety certifications does the MAX14934CAWE+ hold?
The MAX14934CAWE+ is certified to UL1577 (5000VRMS), CSA C22.2 No. 5A (cUL), VDE 0884-11:2017 (Basic Insulation), and IEC 61000-4-5 (±10kV surge). These approvals cover working voltage up to 848VRMS and transient isolation up to 8400VPK, enabling use in Class I medical devices (IEC 60601-1) and industrial PLCs requiring reinforced insulation.
How does the enable functionality work on the MAX14934CAWE+?
The MAX14934CAWE+ features independent active-high enable pins: ENA controls Side A outputs (not applicable here, as MAX14934 has no OUTA pins), and ENB enables Side B outputs (OUTB1–OUTB4). When ENB is low, all OUTB pins enter high-impedance state. ENB includes an internal 2µA pullup to VDDB, ensuring outputs default to low when ENB is floating - a behavior confirmed in the MAX14934CAWE+ datasheet's Pin Description table.
What is the default output state of the MAX14934CAWE+ when inputs are unpowered?
The MAX14934CAWE+ has a default-low output configuration: when INA1–INA4 are unpowered or at invalid logic levels, OUTB1–OUTB4 drive low. This is specified in the General Description and confirmed by the "default low" suffix in the part number designation ('C' variant). The behavior ensures fail-safe operation in power-loss scenarios for industrial control and medical monitoring systems using the MAX14934CAWE+.
MAX14934CAWE+ 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:
- RS232, RS422, RS485, SPI
- 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
MAX14934CAWE+ FAQ
1.How can I place an order for MAX14934CAWE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14934CAWE+ 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 MAX14934CAWE+ reliable?
The price and inventory of MAX14934CAWE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14934CAWE+ is usually 5 days.
3.What payment methods are accepted for MAX14934CAWE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14934CAWE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14934CAWE+?
MAX14934CAWE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14934CAWE+ 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 MAX14934CAWE+?
For technical support, including MAX14934CAWE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14934CAWE+ requirements.
6.How does Aetrix verify that MAX14934CAWE+ is sourced from the original manufacturer or authorized distributors?
All MAX14934CAWE+ 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 MAX14934CAWE+ meets industry standards.
7.What is the process for return or replacement of MAX14934CAWE+?
All MAX14934CAWE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX14934CAWE+, 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 MAX14934CAWE+ part is unused and in its original packaging.
Return procedure for MAX14934CAWE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX14934CAWE+ Tags
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