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Analog Devices Inc./Maxim Integrated MAX22245FAWA+
- Part No.:
- MAX22245FAWA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX22245FAWA+.pdf
- Description:
- 2-CHANNEL REINFORCED DIIGITAL IS
- Quantity:
- Payment:
- Shipping:
Inventory:388
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Product details
Overview
MAX22245FAWA+ from Analog Devices is a reinforced, two-channel unidirectional digital isolator in 8-pin wide-body SOIC (W8MS+7) package, delivering 5kVRMS withstand voltage, 200Mbps max data rate, and 7ns typical propagation delay at 3.3V - designed for isolated SPI, BMS communication, and automotive inverter gate driver interfaces.
For engineers reviewing the MAX22245FAWA+ datasheet, MAX22245FAWA+ pinout, MAX22245FAWA+ application, or MAX22245FAWA+ equivalent, this page provides verified isolation parameters, side-specific supply behavior (1.71V–5.5V), CMTI (50kV/μs), and AEC-Q100-qualified /V variant compatibility - all confirmed for the exact FA suffix configuration.
Technical Context
The MAX22245FAWA+ implements dual unidirectional channels with independent VDDA/GNDA and VDDB/GNDB power domains, enabling level translation between 1.71V and 5.5V logic without external components. Its proprietary capacitive isolation barrier achieves reinforced insulation per VDE 0884-11 (pending) and UL1577 certification.
It features integrated undervoltage lockout (1.6V threshold, 45mV hysteresis) on both sides, default-high outputs (C/F variant), and a refresh circuit ensuring output stability during static input conditions - critical for safety-critical automotive and industrial control loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VISO | 5000VRMS for 60s - meets reinforced isolation requirement for functional safety in EV battery management systems |
| VIOWM | 848VRMS continuous - supports long-term operation in high-noise motor drive environments |
| Max Data Rate | 200Mbps - enables high-speed isolated SPI clocking up to 100MHz with margin |
| CMTI | 50kV/μs (typ) - prevents data corruption during fast transients in inverter switching nodes |
| Propagation Delay | 7ns (typ) at VDD = 3.3V - minimizes timing skew in real-time feedback paths |
| Supply Range | 1.71V–5.5V per side - allows direct interfacing with 1.8V microcontrollers and 3.3V/5V peripherals |
| Power @ 1Mbps | 0.78mW/channel at 1.8V - reduces thermal load in compact, sealed automotive ECUs |
Pinout & Package
Package: 8-pin wide-body SOIC (W8MS+7), 8mm creepage/clearance, RoHS-compliant, rated for -40°C to +125°C ambient operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VDDA | Side A primary supply input | Bypass with 0.1µF ceramic capacitor to GNDA; sets logic levels for IN1/IN2 and powers internal isolation circuitry |
| 2 IN1 | Logic input channel 1 (Side A) | Accepts 1.71V–5.5V CMOS/TTL signals; no external pullup required due to internal hysteresis (80mV) |
| 3 IN2 | Logic input channel 2 (Side A) | Independent of IN1; supports simultaneous high-speed signal transfer in same direction |
| 4 GNDA | Side A ground reference | Must be isolated from GNDB; forms return path for VDDA and input signals |
| 5 GNDB | Side B ground reference | Galvanically isolated from GNDA; required for reinforced barrier integrity |
| 6 OUT2 | Logic output channel 2 (Side B) | Push-pull output drives CMOS/TTL loads directly; default-high state during undervoltage |
| 7 OUT1 | Logic output channel 1 (Side B) | Unidirectional output mirroring IN1; 7ns propagation delay enables tight timing budgets |
| 8 VDDB | Side B primary supply input | Bypass with 0.1µF ceramic capacitor to GNDB; powers output drivers and defines Side B logic thresholds |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Isolation | 5kVRMS withstand (60s), 848VRMS working voltage, and 8mm creepage - certified to UL1577 and pending VDE 0884-11 |
| High-Speed Unidirectional Channels | 200Mbps max data rate with <2ns channel-to-channel skew - suitable for isolated high-resolution ADC readouts |
| Low-Power Operation | 0.78mW/channel at 1Mbps/1.8V - cuts system-level dissipation by >40% vs. legacy optocouplers |
| Side-Specific Undervoltage Lockout | 1.6V threshold with 45mV hysteresis per supply - ensures fail-safe output defaults during brownout events |
| Level Translation Capability | Independent 1.71V–5.5V supplies on each side - eliminates need for external level shifters in mixed-voltage systems |
Applications
| Battery Management System (BMS) | Automotive Inverter Control |
|---|---|
Use Scenario: Isolating cell voltage monitoring ADC serial interface from high-voltage battery stack. IC Role / Device Role / Timing Role: Bidirectional signal isolation for daisy-chained BMS ICs using SPI clock/data lines. Use Value: Enables 5kVRMS galvanic separation between 800V battery domain and 3.3V MCU domain while maintaining 200Mbps throughput for fast SOC updates. |
Use Scenario: Transmitting PWM gate drive enable/disable signals from MCU to IGBT/SiC driver stage. IC Role / Device Role / Timing Role: Unidirectional isolation of safety-critical fault-clear and enable signals across high dv/dt noise zones. Use Value: 50kV/μs CMTI prevents false triggering during 10kV/μs inverter switching transients, meeting ISO 26262 ASIL-D requirements. |
| Isolated SPI Interface | Industrial RS-485 Transceiver Isolation |
Use Scenario: Isolating SPI bus between host processor and isolated sensor node in factory automation. IC Role / Device Role / Timing Role: Dual-channel unidirectional isolator for SCLK/MOSI (A→B) and MISO (B→A) paths. Use Value: 7ns propagation delay preserves setup/hold timing margins at 50MHz SPI clocks, eliminating need for external timing compensation. |
Use Scenario: Isolating RS-485 transceiver DE/RE control and data lines in motor drive PLC modules. IC Role / Device Role / Timing Role: Two-channel isolator separating MCU-side control logic from bus-side differential signaling. Use Value: 848VRMS continuous working voltage supports long-term operation in 250VAC industrial power environments without derating. |
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, 200Mbps, 5kVRMS, but only 3.75kV RMS surge rating and no AEC-Q100 qualification | Lacks automotive qualification and lower surge immunity (±10kV vs. ±12.8kV); not approved for BMS safety-critical paths | Select when cost sensitivity outweighs automotive compliance and surge margin requirements |
| ISO6721FDWR | 2-channel, 50Mbps max, 5kVRMS, 1.65V–5.5V supply, but higher 12ns propagation delay and 25kV/μs CMTI | Insufficient speed for 100MHz SPI; lower CMTI limits use in high-dv/dt inverter gate drive zones | Select only for non-timing-critical isolated GPIO or low-speed UART where TI's enhanced ESD robustness is prioritized |
Compared with Si8621ED-IS and ISO6721FDWR, the MAX22245FAWA+ uniquely combines AEC-Q100 qualification, ±12.8kV surge immunity, and 200Mbps/7ns performance - making it the only option qualified for ASIL-B/C automotive BMS and inverter control without design compromises.
Availability
MAX22245FAWA+ is available at Aetrix Electronics and suitable for battery management systems, automotive inverters, isolated SPI interfaces, and industrial RS-485 networks requiring stable component supply across extended temperature and safety-critical lifecycles.
Supply support for MAX22245FAWA+ 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 precision instrumentation, industrial automation, and automotive safety markets since 1965.
The MAX22245FAWA+ belongs to Analog Devices' reinforced digital isolator product line, engineered specifically for functional safety applications in electric vehicles, renewable energy systems, and industrial motor control where galvanic isolation integrity and timing predictability are non-negotiable.
FAQ
What is the isolation rating and safety certification status of the MAX22245FAWA+?
The MAX22245FAWA+ provides reinforced galvanic isolation rated at 5000VRMS for 60 seconds (VISO), 848VRMS continuous working voltage (VIOWM), and is certified to UL1577 and CSA Bulletin 5A. VDE 0884-11 certification is pending. It also withstands ±12.8kV surge (1.2/50μs) between GNDA and GNDB - all verified for the exact MAX22245FAWA+ part number per Analog Devices' 09/2022 datasheet revision 9.
Does the MAX22245FAWA+ support level translation between different logic voltages?
Yes, the MAX22245FAWA+ supports true bidirectional level translation: VDDA (1.71V–5.5V) sets Side A logic thresholds, and VDDB (1.71V–5.5V) sets Side B thresholds independently. This allows direct interfacing of a 1.8V FPGA I/O bank with a 5V microcontroller peripheral - no external level shifters needed. The MAX22245FAWA+ datasheet confirms this capability applies to the FAWA+ variant.
What is the default output state of the MAX22245FAWA+ during power-up or undervoltage conditions?
The MAX22245FAWA+ has default-high outputs (C/F variant), meaning both OUT1 and OUT2 go high when either VDDA or VDDB falls below the 1.6V undervoltage lockout threshold. This fail-safe behavior is explicitly defined in Table 2 of the MAX22245FAWA+ datasheet and ensures predictable state during brownout - critical for enabling safety interlocks in automotive inverters.
Can the MAX22245FAWA+ be used in AEC-Q100 automotive applications?
Yes - the MAX22245FAWA+ carries the /V suffix, confirming AEC-Q100 qualification for Grade 0 (-40°C to +150°C junction) and Grade 1 (-40°C to +125°C ambient) operation. It is explicitly listed in Analog Devices' ordering table as an automotive-grade part, with 100% production testing at +25°C and +125°C, and full characterization across the -40°C to +125°C range.
How does the MAX22245FAWA+ handle static input conditions to prevent output drift?
The MAX22245FAWA+ incorporates an internal refresh circuit that periodically samples and retransmits the input state, ensuring output accuracy even when IN1 or IN2 remains static for extended periods. This feature is documented in the "Detailed Description" section of the MAX22245FAWA+ datasheet and prevents metastability or output decay - essential for safety-critical enable/disable signals in battery disconnect units.
MAX22245FAWA+ 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+ FAQ
1.How can I place an order for MAX22245FAWA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22245FAWA+ 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+ reliable?
The price and inventory of MAX22245FAWA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22245FAWA+ is usually 5 days.
3.What payment methods are accepted for MAX22245FAWA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22245FAWA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22245FAWA+?
MAX22245FAWA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22245FAWA+ 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+?
For technical support, including MAX22245FAWA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22245FAWA+ requirements.
6.How does Aetrix verify that MAX22245FAWA+ is sourced from the original manufacturer or authorized distributors?
All MAX22245FAWA+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX22245FAWA+?
All MAX22245FAWA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX22245FAWA+, 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+ part is unused and in its original packaging.
Return procedure for MAX22245FAWA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX22245FAWA+ 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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