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Analog Devices Inc./Maxim Integrated MAX22245FAWA/V+
- Part No.:
- MAX22245FAWA/V+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX22245FAWA/V+.pdf
- Description:
- 2-CHANNEL REINFORCED DIGITAL ISO
- Quantity:
- Payment:
- Shipping:
Inventory:1,255
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Product details
Overview
MAX22245FAWA/V+ from Analog Devices is a reinforced, fast, low-power, two-channel digital isolator designed for bidirectional signal isolation across galvanically separated domains in automotive and industrial systems. It delivers 200Mbps maximum data rate, 7ns typical propagation delay at 3.3V, 50kV/μs CMTI, and 5kVRMS withstand voltage for 60s - enabling robust isolated SPI, RS-485, and BMS communication interfaces.
For engineers reviewing the MAX22245FAWA/V+ datasheet, MAX22245FAWA/V+ pinout, MAX22245FAWA/V+ application, or MAX22245FAWA/V+ equivalent, this page provides verified technical context, exact pin functions, real-world use cases, and validated alternative options - all grounded in Analog Devices' official documentation and AEC-Q100 qualification evidence.
Technical Context
The MAX22245FAWA/V+ implements two unidirectional, same-direction channels using Analog Devices' proprietary capacitive isolation technology. It supports independent 1.71V–5.5V supplies on both sides (VDDA/GNDA and VDDB/GNDB), enabling level translation while maintaining reinforced insulation with 8mm creepage/clearance and 848VRMS continuous working voltage (VIOWM).
It features integrated undervoltage lockout (1.5V–1.66V threshold), default-high outputs (C/F variant), refresh circuitry for indefinite DC input stability, and push-pull output drivers eliminating external pull-ups. Its 7.5ps RMS clock jitter and <2ns channel-to-channel skew support high-fidelity timing-critical interfaces like isolated ADC synchronization and motor control feedback loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5kVRMS for 60s (VISO) - meets reinforced insulation requirements per IEC 60747-5-5 and UL1577. |
| Working Voltage | 848VRMS continuous (VIOWM) - enables long-term operation in high-voltage battery monitoring and inverter gate drive circuits. |
| Max Data Rate | 200Mbps - supports high-speed isolated serial protocols including SPI up to 100MHz SCLK and RS-485 at full line rate. |
| Propagation Delay | 7ns typ at VDD = 3.3V - ensures sub-10ns latency for real-time control loop isolation in motor drives and power converters. |
| CMTI | 50kV/μs typ - rejects fast common-mode transients from IGBT switching noise in EV inverters and industrial VFDs. |
| Supply Range | 1.71V to 5.5V per side - allows direct interfacing with 1.8V microcontrollers and 3.3V/5V peripherals without level shifters. |
| Power @ 1Mbps | 0.78mW/channel at 1.8V - reduces thermal load in space-constrained automotive ECUs and battery management modules. |
Pinout & Package
MAX22245FAWA/V+ is housed in an 8-pin wide-body SOIC package (W8MS+7 outline) with 8mm creepage and clearance, RoHS-compliant, rated for -40°C to +125°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VDDA | Side A power supply input | Supplies logic side A (IN1, IN2); bypass with 0.1µF ceramic capacitor to GNDA for noise immunity. |
| 2 IN1 | Logic input channel 1 (Side A) | Accepts digital signals from MCU GPIO or sensor interface; compatible with 1.71V–5.5V logic levels. |
| 3 IN2 | Logic input channel 2 (Side A) | Second isolated input path - used for dual-signal acquisition (e.g., isolated current/voltage sensing). |
| 4 GNDA | Ground reference for Side A | Return path for VDDA and inputs; must be isolated from GNDB by ≥8mm PCB gap or slot. |
| 5 GNDB | Ground reference for Side B | Return path for VDDB and outputs; forms reinforced barrier with GNDA - no metallic connection allowed. |
| 6 OUT2 | Logic output channel 2 (Side B) | Drives isolated peripherals (e.g., RS-485 transceiver DE/RE pins); push-pull, no external pull-up needed. |
| 7 OUT1 | Logic output channel 1 (Side B) | Primary isolated output - commonly used for SPI MISO/MOSI or status flag transmission to host controller. |
| 8 VDDB | Side B power supply input | Supplies output side (OUT1, OUT2); independent of VDDA - enables level translation between 1.8V and 5V domains. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified (/V suffix) | Rated for automotive applications including HEV battery management and onboard chargers (-40°C to +125°C). |
| Reinforced insulation | UL1577, cUL, and VDE 0884-11 (pending) certified - eliminates need for system-level redundancy in safety-critical designs. |
| Low-power operation | 0.78mW/channel at 1Mbps/1.8V - extends battery life in portable test equipment and reduces heatsink requirements. |
| High CMTI & surge immunity | 50kV/μs CMTI and ±12.8kV surge (1.2/50μs) - sustains reliable operation in noisy motor drive and solar inverter environments. |
| Default-high outputs (C/F variant) | Outputs assert high during undervoltage or open-input conditions - simplifies fail-safe state handling in control systems. |
Applications
| Automotive Battery Management | Isolated SPI Interface |
|---|---|
|
Use Scenario: Monitoring cell voltages and temperatures in 400V–800V EV battery packs using isolated ADCs and microcontrollers. IC Role / Device Role / Timing Role: Isolates analog front-end measurement domain (high-side) from low-voltage MCU domain (low-side) while transmitting digitized sensor data. Use Value: Enables safe, accurate, and EMI-immune communication across 5kVRMS barrier - critical for ASIL-B compliance and functional safety. |
Use Scenario: Connecting isolated SPI master (MCU) to isolated SPI slave (ADC, DAC, or sensor hub) in industrial PLCs. IC Role / Device Role / Timing Role: Provides two synchronized, low-skew, high-speed isolated data paths (MOSI/MISO) with matched propagation delay. Use Value: Supports 100MHz SCLK with <2ns channel-to-channel skew - preserves SPI timing margins and prevents setup/hold violations. |
| HEV Onboard Charger | Isolated RS-485 Communication |
|
Use Scenario: Isolating control signals between primary-side PFC controller and secondary-side DC-DC converter in bidirectional OBCs. IC Role / Device Role / Timing Role: Transfers PWM enable/disable and fault signals across 848VRMS working voltage barrier with nanosecond latency. Use Value: Maintains precise timing alignment between isolated control stages - essential for zero-voltage switching and efficiency optimization. |
Use Scenario: Galvanically isolating RS-485 transceivers in factory automation networks exposed to ground potential differences. IC Role / Device Role / Timing Role: Isolates TX and RX lines separately using same-direction channels to preserve full-duplex timing integrity. Use Value: Prevents ground-loop currents and common-mode noise from corrupting Modbus RTU frames over 1200m cable runs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8621ED-IS | 2-channel, 150Mbps max, 2.5kVrms isolation, 3.75kVrms surge rating; no AEC-Q100 qualification. | Suitable for industrial but not automotive-grade BMS or OBC designs requiring AEC-Q100 compliance. | Select when cost sensitivity outweighs automotive qualification and 200Mbps bandwidth needs. |
| ADUM2201ARWZ | 2-channel, 1Mbps max, 5kVRMS isolation, 25kV/μs CMTI; older iCoupler® technology, higher power consumption. | Applicable only in low-speed legacy systems (e.g., isolated UART, slow sensor buses) where 200Mbps is unnecessary. | Choose only if legacy design reuse or footprint compatibility with ADuM220x SOIC-8 is mandatory. |
Compared with SI8621ED-IS and ADUM2201ARWZ, the MAX22245FAWA/V+ uniquely combines AEC-Q100 qualification, 200Mbps speed, and 50kV/μs CMTI in a single 8-pin wide SOIC - making it the only option for next-generation automotive isolated communication requiring both safety certification and high-speed performance.
Availability
MAX22245FAWA/V+ is available at Aetrix Electronics and suitable for automotive battery management systems, isolated SPI interfaces, and HEV onboard charger designs requiring stable component supply, long-term lifecycle support, and AEC-Q100 traceability.
Supply support for MAX22245FAWA/V+ 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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving automotive, industrial, communications, and healthcare markets.
The MAX22245FAWA/V+ belongs to Analog Devices' MAX2224x family of reinforced digital isolators - engineered specifically for AEC-Q100-compliant automotive subsystems demanding high-speed, low-power, and ultra-robust galvanic isolation.
FAQ
What is the isolation voltage rating of the MAX22245FAWA/V+?
The MAX22245FAWA/V+ has a reinforced isolation rating of 5000VRMS for 60 seconds (VISO), a maximum working voltage of 848VRMS (VIOWM), and a peak surge withstand capability of ±12.8kV per IEC 61000-4-5. These values are verified per UL1577 and pending VDE 0884-11 certification - confirming suitability for automotive high-voltage domain isolation.
Does the MAX22245FAWA/V+ support level translation between different logic voltages?
Yes, the MAX22245FAWA/V+ supports independent 1.71V to 5.5V supplies on each side (VDDA and VDDB), enabling seamless level translation - for example, interfacing a 1.8V FPGA I/O bank with a 3.3V RS-485 transceiver. Input thresholds scale with VDD_, ensuring reliable operation across the full supply range without external components.
What is the difference between MAX22245FAWA/V+ and MAX22246FAWA/V+?
The MAX22245FAWA/V+ features two unidirectional channels operating in the same direction (A→B), ideal for isolated digital I/O or dual-signal transmission. The MAX22246FAWA/V+ has opposite-direction channels (A→B and B→A), optimized for full-duplex isolated interfaces like RS-232 or RS-485. Both share identical isolation specs, package, and AEC-Q100 qualification.
Is the MAX22245FAWA/V+ pin-compatible with other devices in the MAX2224x family?
Yes, all MAX2224x variants (including MAX22245FAWA/V+, MAX22245BAWA/V+, MAX22246FAWA/V+) share identical 8-pin wide SOIC pinout and footprint (W8MS+7). Channel direction (same vs. opposite) and default output state (high vs. low) are the only functional differences - allowing drop-in replacement within the same variant group (e.g., F/C suffixes).
What safety certifications does the MAX22245FAWA/V+ hold?
The MAX22245FAWA/V+ is certified to UL1577 (File E351759) and CSA Bulletin 5A (cUL) for 5000VRMS isolation, and is pending VDE 0884-11:2017-1 certification for reinforced insulation. It also meets AEC-Q100 Grade 0 qualification (-40°C to +125°C), making it approved for automotive powertrain and charging applications.
MAX22245FAWA/V+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- CAN, RS232, RS422, RS485, SPI
- Isolated Power:
- No
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 2/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- Common Mode Transient Immunity (Min):
- 50kV/µs (Typ)
- Data Rate:
- 200Mbps
- Propagation Delay tpLH / tpHL (Max):
- 9.5ns, 9.9ns
- Pulse Width Distortion (Max):
- 2ns
- Rise / Fall Time (Typ):
- 0.8ns, 1ns (Max)
- Voltage - Supply:
- 1.71V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX22245FAWA/V+ FAQ
1.How can I place an order for MAX22245FAWA/V+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22245FAWA/V+ 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 MAX22245FAWA/V+ reliable?
The price and inventory of MAX22245FAWA/V+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22245FAWA/V+ is usually 5 days.
3.What payment methods are accepted for MAX22245FAWA/V+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22245FAWA/V+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22245FAWA/V+?
MAX22245FAWA/V+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22245FAWA/V+ 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 MAX22245FAWA/V+?
For technical support, including MAX22245FAWA/V+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22245FAWA/V+ requirements.
6.How does Aetrix verify that MAX22245FAWA/V+ is sourced from the original manufacturer or authorized distributors?
All MAX22245FAWA/V+ 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 MAX22245FAWA/V+ meets industry standards.
7.What is the process for return or replacement of MAX22245FAWA/V+?
All MAX22245FAWA/V+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX22245FAWA/V+, 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 MAX22245FAWA/V+ part is unused and in its original packaging.
Return procedure for MAX22245FAWA/V+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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