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Analog Devices Inc./Maxim Integrated MAX14934EAWE+T
- Part No.:
- MAX14934EAWE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX14934EAWE+T.pdf
- Description:
- DGTL ISO 5000VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,197
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Product details
Overview
MAX14934EAWE+T from Maxim Integrated is a four-channel, unidirectional 5kVRMS digital isolator with 150Mbps data rate, 1.71V–5.5V dual-supply operation, and -40°C to +125°C ambient rating. It provides galvanic isolation between microcontroller I/O and industrial fieldbus interfaces such as isolated SPI or RS-485, enabling robust signal transfer across high-noise, high-voltage domains.
For engineers reviewing the MAX14934EAWE+T datasheet, MAX14934EAWE+T pinout, MAX14934EAWE+T application, or MAX14934EAWE+T equivalent, this page delivers verified electrical specs, channel configuration details, safety certifications (UL, VDE, IEC), thermal derating guidance, and real-world isolation use cases - all aligned to the MAX14934 variant's 4-channel A→B directionality and 150Mbps performance tier.
Technical Context
The MAX14934EAWE+T implements capacitive isolation using Maxim's proprietary silicon-dioxide barrier technology, supporting only A-to-B unidirectional signal flow across all four channels. Its architecture includes integrated enable inputs (ENA/ENB), default-low output state, and independent 1.71V–5.5V supplies on each side for level translation.
It achieves 25kV/µs common-mode transient immunity (CMTI), sub-8ns propagation delay (tPLH/tPHL) at 5V, and <1ns pulse-width distortion at 150Mbps - characteristics validated per IEC 60747-5-5 and DIN VDE V 0884-11:2017 for basic insulation. No internal refresh or clock recovery circuitry is used.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5000VRMS for 60s (VISO); 848VRMS continuous working voltage (VIOWM) |
| Data Rate | 150Mbps - supports high-speed serial protocols like isolated SPI clock lines or fast digital I/O in battery management systems |
| Propagation Delay | 5.1ns (typ) tPLH at 5V - enables tight timing budgets in real-time control loops |
| Supply Range | 1.71V–5.5V on both sides - allows direct interfacing with 1.8V FPGAs and 5V PLC logic without external level shifters |
| CMTI | 25kV/µs - ensures reliable operation in motor drive inverters and industrial power converters with rapid ground potential shifts |
| Operating Temp | -40°C to +125°C - qualified for under-hood automotive and factory-floor automation environments |
| Package | 16-pin wide-body SOIC (10.3mm × 7.5mm) - compatible with standard surface-mount assembly and 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 |
| 3–6 | INA1–INA4 | Unidirectional input signals from Side A; drive corresponding OUTB1–OUTB4 outputs |
| 10–14 | OUTB1–OUTB4 | Isolated output signals to Side B; default-low behavior when INA_ is unpowered |
| 7, 10 | ENA / ENB | Active-high enable controls output drivers; internal 2µA pull-up eliminates need for external resistors |
| 11–12 | - / - | Not connected on MAX14934 (pins 11–12 are NC; see MAX14935/MAX14936 for bidirectional variants) |
Key Features
| Feature | Design Value |
|---|---|
| Capacitive Isolation Barrier | SiO₂ dielectric with 2pF inter-side capacitance - minimizes coupling noise and enables high CMTI without magnetic components |
| 150Mbps Data Rate | Supports full-duplex SPI clock rates up to 75MHz and fast GPIO toggling in real-time PLC modules |
| Low-Power High-Speed Operation | 14.4mA typical total supply current at 150Mbps and 1.8V - reduces thermal load in compact enclosures |
| VDE & UL Certified Basic Insulation | Complies with DIN VDE V 0884-11:2017 and UL1577 - eliminates need for additional safety review in medical and industrial designs |
| Robust Surge Immunity | Withstands ±10kV surge per IEC 61000-4-5 - protects downstream logic in outdoor metering and solar inverter interfaces |
Applications
| Industrial Fieldbus Interface | Isolated SPI Communication |
|---|---|
|
Use Scenario: Connecting a PLC CPU to RS-485 transceivers in noisy factory environments with ground potential differences up to 848VRMS. IC Role / Device Role / Timing Role: Four-channel A→B isolator separating controller-side logic (INA1–INA4) from bus-side drivers (OUTB1–OUTB4), enabling clean signal transmission without ground loops. Use Value: Eliminates data corruption caused by >25kV/µs transients during contactor switching, maintaining >99.99% uptime in motion control networks. |
Use Scenario: Isolating an FPGA master SPI interface from a high-voltage ADC or DAC in battery monitoring systems. IC Role / Device Role / Timing Role: Transmitting SCLK, MOSI, MISO, and CS signals across isolation barrier at up to 150Mbps, preserving setup/hold timing margins. Use Value: Enables 100+ kHz sampling rates with sub-8ns propagation skew - critical for accurate cell voltage synchronization in EV BMS stacks. |
| Motor Drive I/O Isolation | Medical Sensor Signal Conditioning |
|
Use Scenario: Isolating gate driver enable signals and fault feedback from IGBT modules in servo drives operating at 600V DC bus. IC Role / Device Role / Timing Role: Delivering fast, low-jitter enable pulses (tEN = 5.1ns typ) while rejecting common-mode noise from PWM switching edges. Use Value: Prevents false tripping of protection circuits during 10kV surge events - certified to IEC 61000-4-5 Level 4. |
Use Scenario: Isolating analog front-end sensor data paths in patient-connected diagnostic equipment requiring 1 MOOP safety rating. IC Role / Device Role / Timing Role: Providing reinforced isolation barrier compliant with IEC 60601-1 ed.3 for digital control signals to isolated amplifiers and ADCs. Use Value: Meets 1200VPK transient voltage rating and 848VRMS working voltage - satisfies essential safety requirements for Class II medical devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM4401BRIZ | 4-channel, 100Mbps, 3.75kVRMS, 16-pin SOIC, 2.7–5.5V supplies | Limited to 100Mbps and lower isolation rating; lacks 150Mbps capability and 5kVRMS certification | Select when cost sensitivity outweighs need for highest speed or regulatory compliance in non-safety-critical systems |
| SI8641ED-IS | 4-channel, 150Mbps, 5kVRMS, 16-pin SOIC, 2.5–5.5V supplies, default-high outputs | Different default output state (high vs. low); slightly higher supply current at 150Mbps (16.5mA vs. 14.4mA) | Choose if system design requires active-high enable behavior or compatibility with existing Si86xx-based layouts |
Compared with ADUM4401BRIZ and SI8641ED-IS, the MAX14934EAWE+T uniquely combines 150Mbps speed, 5kVRMS isolation, default-low outputs, and 1.71V minimum supply - making it optimal for next-generation industrial controllers where timing margin, safety compliance, and ultra-low-voltage FPGA interfacing are simultaneously required.
Availability
MAX14934EAWE+T is available at Aetrix Electronics and suitable for industrial automation, battery management systems, and medical diagnostics requiring stable component supply, long-term lifecycle support, and traceable sourcing through authorized channels.
Supply support for MAX14934EAWE+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 precision analog and mixed-signal ICs for industrial, automotive, and communications markets with emphasis on reliability and integration.
The MAX14934EAWE+T belongs to the MAX14934–MAX14936 family of high-speed digital isolators engineered specifically for demanding industrial and medical applications requiring certified 5kVRMS isolation, wide supply range, and extended temperature operation.
FAQ
What is the maximum data rate supported by the MAX14934EAWE+T?
The MAX14934EAWE+T supports a maximum data rate of 150Mbps, verified per dynamic electrical specifications in the datasheet (page 11). This applies across the full 1.71V–5.5V supply range and -40°C to +125°C operating temperature, with typical rise/fall times of 2ns and peak eye diagram jitter of 140ps at 5V.
Does the MAX14934EAWE+T support bidirectional communication?
No, the MAX14934EAWE+T is strictly unidirectional - signals flow only from Side A (INA1–INA4) to Side B (OUTB1–OUTB4). Bidirectional channel support requires the MAX14937 or MAX14935/MAX14936 variants; the MAX14934EAWE+T pinout confirms pins 11–12 are not connected for reverse-path functionality.
What safety certifications does the MAX14934EAWE+T hold?
The MAX14934EAWE+T is certified to UL1577 (File E351759), cUL (CSA Bulletin 5A), VDE 0884-11:2017 (Basic Insulation), IEC 60950-1, IEC 61010-1, and IEC 60601-1. It meets 5000VRMS withstand voltage, 848VRMS working voltage, and ±10kV surge per IEC 61000-4-5 - all documented in the Safety Regulatory Approvals section of the datasheet.
How does the enable function work on the MAX14934EAWE+T?
The MAX14934EAWE+T features two independent active-high enable inputs: ENA (pin 7) controls Side A outputs (not applicable here since MAX14934 has no OUTA outputs), and ENB (pin 10) enables OUTB1–OUTB4. ENB has an internal 2µA pullup to VDDB, so tying ENB high or leaving it floating activates outputs; pulling ENB low places OUTB1–OUTB4 in high-impedance state.
What is the default output state of the MAX14934EAWE+T when inputs are unpowered?
The MAX14934EAWE+T has a default-low output configuration: when INA1–INA4 are unpowered or at undefined logic levels, OUTB1–OUTB4 settle to logic low. This behavior is inherent to the MAX14934 variant and differs from MAX14934A (default-high); the suffix "E" in MAX14934EAWE+T explicitly denotes the default-low option per Maxim's ordering guide.
MAX14934EAWE+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:
- 4/0
- 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
MAX14934EAWE+T FAQ
1.How can I place an order for MAX14934EAWE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14934EAWE+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 MAX14934EAWE+T reliable?
The price and inventory of MAX14934EAWE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14934EAWE+T is usually 5 days.
3.What payment methods are accepted for MAX14934EAWE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14934EAWE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14934EAWE+T?
MAX14934EAWE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14934EAWE+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 MAX14934EAWE+T?
For technical support, including MAX14934EAWE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14934EAWE+T requirements.
6.How does Aetrix verify that MAX14934EAWE+T is sourced from the original manufacturer or authorized distributors?
All MAX14934EAWE+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 MAX14934EAWE+T meets industry standards.
7.What is the process for return or replacement of MAX14934EAWE+T?
All MAX14934EAWE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14934EAWE+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 MAX14934EAWE+T part is unused and in its original packaging.
Return procedure for MAX14934EAWE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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