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Analog Devices Inc./Maxim Integrated MAX14434FAWE+T
- Part No.:
- MAX14434FAWE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX14434FAWE+T.pdf
- Description:
- DIGITAL ISOLATOR 5KV 4CH LOW PWR
- Quantity:
- Payment:
- Shipping:
Inventory:752
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Product details
Overview
MAX14434FAWE+T from Maxim Integrated is a four-channel, unidirectional, 200Mbps digital galvanic isolator with 5kVRMS isolation rating, 50kV/μs CMTI, and dual 1.71V–5.5V supplies enabling level translation. It features default-high outputs and active-high enable on both sides, housed in a wide-body 16-pin SOIC package with 8mm creepage/clearance and CTI ≥600V for industrial-grade reliability.
For engineers reviewing the MAX14434FAWE+T datasheet, MAX14434FAWE+T pinout, MAX14434FAWE+T application, or MAX14434FAWE+T equivalent, this device supports high-speed isolated SPI, RS-485, and battery management systems where low-power operation (1.1mW/channel @1Mbps, 3.5mW/channel @100Mbps), robust surge immunity (±10kV), and -40°C to +125°C operation are critical.
Technical Context
The MAX14434FAWE+T implements capacitive isolation with proprietary process technology, delivering 200Mbps data rate and sub-10ns propagation delay (tPLH/tPHL ≤9.2ns at 5V) across all four channels. Its architecture supports independent A-side and B-side supply domains (VDDA/VDDA = 1.71V–5.5V), enabling bidirectional level translation without external logic.
It features integrated undervoltage lockout (1.5V–1.66V threshold), 410mV input hysteresis for noise immunity, and guaranteed operation up to 150Mbps at 1.8V supply. The device meets UL1577 and CSA Bulletin 5A safety standards with VIOWM = 848VRMS continuous working voltage and VIOSM = 10kV surge rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5kVRMS for 60s - certifies single-protection barrier compliance per UL1577 and CSA 5A |
| Max Data Rate | 200Mbps - enables high-speed isolated SPI clock/data paths without timing bottlenecks |
| CMTI | 50kV/μs typical - ensures reliable operation in noisy industrial motor drives and inverters |
| Supply Range | 1.71V to 5.5V per side - allows direct interfacing with 1.8V microcontrollers and 5V fieldbus transceivers |
| Propagation Delay | 4.1–9.2ns (tPLH) - supports tight-tolerance timing in real-time control loops |
| Operating Temp | -40°C to +125°C - qualified for under-hood automotive and industrial power electronics |
| Package | 16-pin wide-body SOIC (W16MS+12) - provides 8mm creepage/clearance and Group I CTI (>600V) |
Pinout & Package
Package: 16-pin wide-body SOIC (W16MS+12), 8mm creepage/clearance, CTI ≥600V, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDDA) | Side A Power Supply | Bypass with 0.1µF ceramic capacitor; powers A-side inputs and ENA |
| 2, 8 (GNDA) | Side A Ground Reference | Return path for VDDA; must be isolated from GNDB |
| 3 (IN1), 4 (IN2) | A-side Digital Inputs | Unidirectional signals from MCU/ASIC to isolated side; VIH = 0.7×VDDA, VIL = 0.8V |
| 5 (IN3), 6 (IN4) | A-side Digital Inputs | Same electrical specs as IN1/IN2; support full 4-channel isolation |
| 7 (ENA) | A-side Enable Input | Active-high; internal 5µA pullup to VDDA; tEN = 3.5ns (5V) |
| 9, 10 (GNDB) | Side B Ground Reference | Return path for VDDB; galvanically isolated from GNDA |
| 11 (OUT4), 12 (OUT3) | B-side Digital Outputs | Default-high outputs; VOH ≥ VDDA–0.4V @4mA, VOL ≤0.4V @4mA |
| 13 (IN1), 14 (IN2) | B-side Digital Inputs | Not used in MAX14434FAWE+T - this variant is A→B unidirectional only |
| 15 (VDDB) | Side B Power Supply | Bypass with 0.1µF ceramic capacitor; powers B-side outputs and ENB |
| 16 (OUT1), 15 (OUT2) | B-side Digital Outputs | Matched delay and drive strength; support 200Mbps eye integrity (TJIT(PK) = 90ps) |
Key Features
| Feature | Design Value |
|---|---|
| 200Mbps data rate | Enables isolated high-speed serial interfaces (e.g., SPI clock >50MHz) without protocol overhead |
| 50kV/μs CMTI | Prevents false triggering in high-dv/dt environments like motor gate drivers and HV inverters |
| Dual 1.71V–5.5V supplies | Eliminates external level shifters when connecting 1.8V logic to 3.3V/5V fieldbus transceivers |
| ±10kV surge immunity | Meets IEC 61000-4-5 Level 4 for robustness in industrial Ethernet and PLC backplanes |
| Low power: 1.1mW/channel @1Mbps | Reduces thermal load in sealed enclosures and extends battery life in portable BMS |
Applications
| Isolated SPI Interface | Industrial Fieldbus |
|---|---|
Use Scenario: Isolating SPI communication between a host MCU and isolated ADC/DAC or sensor front-end in a programmable logic controller. IC Role / Device Role / Timing Role: Unidirectional signal translator with 200Mbps capability and <10ns propagation skew, preserving SPI timing margins. Use Value: Enables safe, high-fidelity data acquisition in 48V DC-powered factory automation systems with common-mode noise up to 50kV/μs. | Use Scenario: Galvanic isolation of RS-485 transceiver data lines in distributed I/O modules deployed across factory floors. IC Role / Device Role / Timing Role: Four-channel A→B isolator driving differential bus transceivers while rejecting ground-loop noise. Use Value: Maintains signal integrity over 1200m cable runs with ±10kV ESD/surge protection and -40°C to +125°C operation. |
| Battery Management Systems | Medical Isolated Monitoring |
Use Scenario: Isolating cell voltage and temperature monitoring signals from high-voltage battery packs (e.g., EV traction batteries) to low-voltage MCU domain. IC Role / Device Role / Timing Role: High-reliability unidirectional isolator with 5kVRMS withstand and 848VRMS continuous working voltage. Use Value: Complies with IEC 61000-1-2 and IEC 60601-1 creepage requirements while supporting fast sampling rates up to 200ksps. | Use Scenario: Isolating patient-connected analog front-end signals (ECG, EEG) from digital processing units in diagnostic equipment. IC Role / Device Role / Timing Role: Medical-grade galvanic barrier with reinforced insulation, CTI ≥600V, and 8mm creepage for 2×MOPP compliance. Use Value: Meets UL1577 and CSA 5A certification for patient-connected devices while enabling low-noise, low-power signal transmission. |
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, 200Mbps, 5kVRMS, but uses capacitive isolation with different CMTI spec (40kV/μs typical) and no integrated UVLO | Requires external UVLO circuitry; lower CMTI may limit use in high-noise motor drives | Select when cost sensitivity outweighs need for highest noise immunity and integrated protection |
| ISO6741FDWR | 4-channel, 50Mbps, 5kVRMS, 3.75kVRMS option available; higher power consumption (4.5mW/channel @100Mbps) | Limited to medium-speed protocols (e.g., CAN FD, slower SPI); not suitable for 200Mbps applications | Select when lower data rate suffices and TI ecosystem integration (e.g., TMS320F28x) is preferred |
Compared with Si8641ED-B-IS and ISO6741FDWR, the MAX14434FAWE+T delivers superior noise immunity (50kV/μs vs. 40kV/μs), integrated UVLO, and lowest power at 200Mbps - making it optimal for high-speed, high-noise industrial and automotive BMS designs requiring minimal bill-of-materials.
Availability
MAX14434FAWE+T is available at Aetrix Electronics and suitable for isolated SPI interfaces, industrial fieldbus nodes, and battery management systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX14434FAWE+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, mixed-signal, and high-reliability interface ICs for industrial, automotive, and medical applications.
The MAX14434–MAX14436 family targets high-speed galvanic isolation in harsh environments, emphasizing low power, high CMTI, and safety-certified packaging for mission-critical systems.
FAQ
What is the maximum data rate supported by the MAX14434FAWE+T?
The MAX14434FAWE+T supports a maximum data rate of 200Mbps at supply voltages from 2.25V to 5.5V. At 1.71V–1.89V, the rated maximum drops to 150Mbps. This performance is validated across the full operating temperature range (-40°C to +125°C) and enables high-speed isolated SPI and digital I/O applications without timing constraints.
Does the MAX14434FAWE+T support bidirectional signal isolation?
No, the MAX14434FAWE+T is a unidirectional isolator with all four channels configured for A-side-to-B-side signal transfer only. Its pinout (IN1–IN4 on Side A, OUT1–OUT4 on Side B) and internal architecture do not support reverse-direction signaling. For bidirectional isolation, consider the MAX14435 or MAX14436 variants.
What safety certifications does the MAX14434FAWE+T hold?
The MAX14434FAWE+T is certified to UL1577 (File E351759) and CSA Bulletin 5A (cUL), with a 5kVRMS isolation rating for 60 seconds and 848VRMS maximum working voltage (VIOWM). It also meets IEC 60747-5-5 for partial discharge, surge (10kV), and creepage (8mm) requirements, qualifying it for reinforced insulation in industrial and medical systems.
Can the MAX14434FAWE+T operate with mismatched supply voltages on each side?
Yes, the MAX14434FAWE+T supports independent 1.71V–5.5V supplies on Side A (VDDA) and Side B (VDDB), enabling true level translation. For example, it can interface a 1.8V FPGA I/O bank to a 3.3V RS-485 transceiver without external level shifters, maintaining signal integrity and timing accuracy across the isolation barrier.
What is the propagation delay skew between channels in the MAX14434FAWE+T?
The MAX14434FAWE+T specifies channel-to-channel propagation delay skew (same direction) of ≤1.5ns across all supply and temperature conditions. This tight skew ensures deterministic timing in parallel data paths such as isolated 4-bit status buses or multi-lane sensor interfaces, critical for synchronous sampling and real-time control applications.
MAX14434FAWE+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:
- 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+T FAQ
1.How can I place an order for MAX14434FAWE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14434FAWE+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 MAX14434FAWE+T reliable?
The price and inventory of MAX14434FAWE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14434FAWE+T is usually 5 days.
3.What payment methods are accepted for MAX14434FAWE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14434FAWE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14434FAWE+T?
MAX14434FAWE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14434FAWE+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 MAX14434FAWE+T?
For technical support, including MAX14434FAWE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14434FAWE+T requirements.
6.How does Aetrix verify that MAX14434FAWE+T is sourced from the original manufacturer or authorized distributors?
All MAX14434FAWE+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 MAX14434FAWE+T meets industry standards.
7.What is the process for return or replacement of MAX14434FAWE+T?
All MAX14434FAWE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14434FAWE+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 MAX14434FAWE+T part is unused and in its original packaging.
Return procedure for MAX14434FAWE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX14434FAWE+T Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
-
ISO7721DR
Texas Instruments
-
ISO7721FDR
Texas Instruments
-
SI8710CC-B-ISR
Skyworks Solutions Inc.
-
ISO6741FQDWRQ1
Texas Instruments
-
ISO7721DWVR
Texas Instruments
-
ISO7762FDBQR
Texas Instruments
-
ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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