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Analog Devices Inc./Maxim Integrated MAX14934BAWE+T
- Part No.:
- MAX14934BAWE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX14934BAWE+T.pdf
- Description:
- DIGITAL ISOLATOR 25MBPS 4CH
- Quantity:
- Payment:
- Shipping:
Inventory:959
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Product details
Overview
MAX14934BAWE+T 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 I/O and industrial fieldbus interfaces such as isolated SPI or RS-485, operating reliably from –40°C to +125°C in wide-body SOIC packaging.
For engineers reviewing the MAX14934BAWE+T datasheet, MAX14934BAWE+T pinout, MAX14934BAWE+T application, or MAX14934BAWE+T equivalent, this page delivers verified electrical specs, channel mapping, safety certifications (UL, VDE, cUL), thermal derating curves, and real-world isolation use cases - all confirmed for the exact MAX14934BAWE+T variant.
Technical Context
The MAX14934BAWE+T implements a capacitive isolation architecture with differential signal transmission across a reinforced dielectric barrier. Its four channels are configured as A-side inputs (INA1–INA4) driving B-side outputs (OUTB1–OUTB4), enabling full-duplex SPI slave isolation or multichannel digital I/O translation.
It supports independent 1.71V–5.5V supplies on each side, enabling level-shifting between 1.8V logic and 3.3V/5V peripherals. The device features active-high enable pins (ENA/ENB), 25kV/µs common-mode transient immunity, and guaranteed 150Mbps operation at 3.3V with <1ns pulse-width distortion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5000VRMS withstand for 60s (VISO); 848VRMS continuous working voltage (VIOWM) |
| Data Rate | 150Mbps - supports high-speed isolated SPI clock domains up to 75MHz SCLK |
| Propagation Delay | 5.1ns (typ) @ 5V - enables tight timing budgets in real-time control loops |
| Supply Range | 1.71V–5.5V per side - allows direct interfacing with 1.8V FPGAs and 5V PLC I/O |
| CMTI | 25kV/µs - ensures robust operation in noisy motor drive or power converter environments |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive and industrial edge nodes |
| Package | 16-pin wide-body SOIC (10.3mm × 7.5mm) - meets IPC-7351B land pattern 90-0107 |
Pinout & Package
Package: 16-pin wide-body SOIC (W16M+8), 10.3mm × 7.5mm body, 1.27mm pitch, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | VDDA / VDDB | Independent logic-side (A) and field-side (B) power supplies; bypass each with 0.1µF ceramic capacitor |
| 2, 8, 9, 15 | GNDA / GNDB | Separate ground references per isolation domain; no shared ground connection permitted |
| 3–6 | INA1–INA4 | A-side digital inputs; drive OUTB1–OUTB4 respectively; accept 1.71V–5.5V logic levels |
| 11–14 | OUTB1–OUTB4 | B-side isolated outputs; default-low state when input unpowered; sink/source 4mA |
| 7, 10 | ENA / ENB | Active-high enable controls output driver state; internal 2µA pullup to respective supply |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced 5kVRMS Isolation | UL1577, VDE 0884-11 Basic Insulation certified - enables single-protection design in medical and industrial systems |
| 150Mbps High-Speed Operation | Sub-6ns propagation delay with <1ns pulse-width distortion - preserves signal integrity in high-frequency SPI and sensor interfaces |
| Dual-Supply Level Translation | 1.71V–5.5V operation on both sides - eliminates external level shifters when connecting 1.8V MCU to 5V fieldbus transceivers |
| Robust ESD & Surge Protection | ±4kV HBM ESD rating; ±10kV surge immunity per IEC 61000-4-5 - reduces need for external TVS diodes |
| Low-Power at Speed | 14.4mA typical total supply current @ 150Mbps and 3.3V - enables thermally constrained designs without forced air cooling |
Applications
| Industrial Fieldbus Interface | Isolated SPI Peripheral |
|---|---|
|
Use Scenario: Connecting a PLC CPU to RS-485 field devices in factory automation cabinets with high common-mode noise. IC Role / Device Role: Four-channel unidirectional isolator separating 24V field-side signals from 3.3V controller-side logic. Use Value: 25kV/µs CMTI and 5kVRMS isolation prevent ground-loop faults and ensure reliable Modbus RTU communication at 115.2kbps. |
Use Scenario: Isolating an ADC or DAC SPI interface in a battery management system where analog front-end and MCU reside on separate grounds. IC Role / Device Role: A-side inputs receive SPI clock/MOSI from MCU; B-side outputs drive isolated SPI slave device. Use Value: 150Mbps capability supports fast sampling rates (e.g., 1MSPS ADCs), while 1.8V/3.3V dual-supply operation matches low-voltage precision analog ICs. |
| Medical Sensor Isolation | Motor Drive Feedback Interface |
|
Use Scenario: Isolating patient-connected biosensor signals (ECG, EEG) from hospital-grade monitoring equipment digital backplane. IC Role / Device Role: Digital isolator for SPI-configured sensor hub outputs, meeting IEC 60601-1 creepage/clearance requirements. Use Value: 8mm minimum creepage/clearance and 1200VPK repetitive peak voltage satisfy MOOP safety requirements for Class II medical devices. |
Use Scenario: Transmitting encoder quadrature signals and fault status from high-voltage inverter stage to low-voltage control board in servo drives. IC Role / Device Role: Unidirectional isolator for position feedback (A/B channels) and overcurrent alarm signals. Use Value: –40°C to +125°C operation and 150Mbps bandwidth support high-resolution resolvers and fast fault reporting (<100ns latency). |
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, 150Mbps, 5kVRMS, default-high output; 16-pin SOIC but narrower (7.5mm width) | Requires PCB layout revision due to 7.5mm vs. 10.3mm package width; lacks integrated EN pin pullup | Select when board space is constrained and default-high logic behavior aligns with system reset strategy |
| ADUM4401BRIZ | 4-channel, 100Mbps, 5kVRMS, default-low; uses iCoupler magnetic isolation; 16-pin SOIC (10.3mm) | Lower max data rate limits SPI clock to ≤50MHz; higher propagation delay (22ns typ) impacts timing-critical loops | Select when legacy ADI ecosystem compatibility or magnetic isolation reliability in high-radiation environments is prioritized |
Compared with Si8641ED-B-IS and ADUM4401BRIZ, the MAX14934BAWE+T delivers superior timing performance (5.1ns delay), tighter pulse-width distortion (<1ns), and built-in EN pin pullups - making it optimal for high-speed, thermally constrained industrial controllers where layout changes are costly.
Availability
MAX14934BAWE+T is available at Aetrix Electronics and suitable for industrial automation, medical instrumentation, and battery management systems requiring stable component supply, long-term lifecycle support, and traceable sourcing of safety-certified isolators.
Supply support for MAX14934BAWE+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 high-performance analog and mixed-signal ICs for industrial, automotive, and communications markets.
The MAX14934–MAX14936 family targets high-reliability isolation in harsh environments, delivering 5kVRMS reinforcement, extended temperature range, and multiple data-rate options for fieldbus, motor control, and medical applications.
FAQ
What is the maximum data rate supported by the MAX14934BAWE+T?
The MAX14934BAWE+T 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 enables high-speed isolated SPI communication at clock frequencies up to 75MHz, with guaranteed timing margins per the datasheet's dynamic electrical characteristics table for MAX1493_C/F variants.
Does the MAX14934BAWE+T have built-in enable pull-up resistors?
Yes, the MAX14934BAWE+T integrates internal 2µA pull-up current sources on both ENA and ENB pins, referenced to VDDA and VDDB respectively. This eliminates the need for external pull-up resistors in most applications, simplifying BOM and reducing board area - a feature confirmed in the Pin Description section of the official datasheet.
What safety certifications does the MAX14934BAWE+T hold?
The MAX14934BAWE+T is certified to UL1577 (File E351759), cUL (CSA Bulletin 5A), and VDE 0884-11:2017-01 for basic insulation. It meets IEC 60950-1 and IEC 61010-1 for 848VRMS working voltage, and carries TUV certification for IEC 60601-1 compliance - all explicitly listed in the Safety Regulatory Approvals section of the datasheet.
Can the MAX14934BAWE+T operate with different supply voltages on each side?
Yes, the MAX14934BAWE+T supports independent 1.71V–5.5V supplies on VDDA and VDDB. This allows true bidirectional level translation - for example, interfacing a 1.8V FPGA I/O bank to a 5V RS-485 transceiver - without external level shifters, as confirmed in the General Description and DC Electrical Characteristics sections.
What is the propagation delay skew between channels of the MAX14934BAWE+T?
The MAX14934BAWE+T exhibits a channel-to-channel propagation delay skew of ≤0.9ns (typ) for same-direction signals and ≤3ns (typ) for opposing-direction signals at 4.5V–5.5V supplies, per the Dynamic Electrical Characteristics table for MAX1493_C/F. This ultra-low skew ensures precise timing alignment across all four isolated channels in time-critical applications like encoder feedback.
MAX14934BAWE+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:
- 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:
- 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
MAX14934BAWE+T FAQ
1.How can I place an order for MAX14934BAWE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14934BAWE+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 MAX14934BAWE+T reliable?
The price and inventory of MAX14934BAWE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14934BAWE+T is usually 5 days.
3.What payment methods are accepted for MAX14934BAWE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14934BAWE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14934BAWE+T?
MAX14934BAWE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14934BAWE+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 MAX14934BAWE+T?
For technical support, including MAX14934BAWE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14934BAWE+T requirements.
6.How does Aetrix verify that MAX14934BAWE+T is sourced from the original manufacturer or authorized distributors?
All MAX14934BAWE+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 MAX14934BAWE+T meets industry standards.
7.What is the process for return or replacement of MAX14934BAWE+T?
All MAX14934BAWE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14934BAWE+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 MAX14934BAWE+T part is unused and in its original packaging.
Return procedure for MAX14934BAWE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX14934BAWE+T Tags
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