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Analog Devices Inc./Maxim Integrated MAX22245FAWA+T
- Part No.:
- MAX22245FAWA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX22245FAWA+T.pdf
- Description:
- 2-CHANNEL REINFORCED DIIGITAL IS
- Quantity:
- Payment:
- Shipping:
Inventory:4,405
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Product details
Overview
MAX22245FAWA+T from Analog Devices is a reinforced, two-channel unidirectional digital isolator in 8-pin wide SOIC package, delivering 5kVRMS withstand voltage, 200Mbps max data rate, and 7ns typical propagation delay at 3.3V - designed for isolated SPI, RS-485, and BMS signal conditioning in automotive and industrial systems.
For engineers reviewing the MAX22245FAWA+T datasheet, MAX22245FAWA+T pinout, MAX22245FAWA+T application, or MAX22245FAWA+T equivalent, this page provides verified isolation parameters, side-specific supply flexibility (1.71–5.5V), CMTI of 50kV/μs, and precise functional mapping for safety-critical galvanic separation between microcontroller and high-voltage domains.
Technical Context
The MAX22245FAWA+T implements reinforced galvanic isolation using Analog Devices' proprietary capacitive isolation technology, with dual independent unidirectional channels transferring signals only from Side A to Side B. It supports asymmetric supply operation: VDDA (1.71–5.5V) and VDDB (1.71–5.5V) are fully decoupled, enabling level translation across domains without shared ground reference.
Its architecture includes integrated refresh circuitry to maintain output state during indefinite DC input conditions, undervoltage lockout (UVLO) on both sides with 1.6V threshold and 45mV hysteresis, and push-pull outputs eliminating external pull-ups. The device meets UL1577, cUL, and pending VDE 0884-11 reinforced insulation requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating (VISO) | 5000VRMS for 60s - ensures long-term reliability under sustained high-voltage stress in battery management and motor drive applications. |
| Working Voltage (VIOWM) | 848VRMS continuous - defines maximum steady-state AC voltage across isolation barrier for system-level safety compliance. |
| Max Data Rate | 200Mbps - supports high-speed isolated communication such as SPI clocked at ≥100MHz or fast CAN FD interfaces. |
| Propagation Delay (tPLH/tPHL) | 7ns typ at 3.3V - enables sub-10ns timing-critical isolation in real-time control loops and synchronized sampling systems. |
| CMTI | 50kV/μs typ - rejects fast common-mode transients from IGBT switching noise in inverters and chargers without data corruption. |
| Supply Range (VDDA/VDDB) | 1.71V to 5.5V independently - allows direct interfacing with 1.8V microcontrollers and 3.3V/5V peripherals without level shifters. |
| Power @ 1Mbps | 0.78mW per channel at 1.8V - reduces thermal load in compact, sealed enclosures like EV battery modules. |
Pinout & Package
Package: 8-pin wide-body SOIC (W8MS+7), 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 | Bypass with 0.1µF ceramic capacitor to GNDA; sets logic-high level on input side (1.71–5.5V). |
| 2 - IN1 | Logic input channel 1 (Side A) | Digital signal source for first unidirectional channel; accepts 1.71–5.5V logic levels with hysteresis. |
| 3 - IN2 | Logic input channel 2 (Side A) | Second independent input; identical electrical specs to IN1; enables dual isolated digital inputs. |
| 4 - GNDA | Side A ground reference | Return path for VDDA and input signals; must be isolated from GNDB by PCB layout and physical spacing. |
| 5 - GNDB | Side B ground reference | Return path for VDDB and output signals; galvanically separated from GNDA by reinforced insulation barrier. |
| 6 - OUT2 | Logic output channel 2 (Side B) | Unidirectional output mirroring IN2; push-pull driver capable of driving CMOS/TTL loads directly. |
| 7 - OUT1 | Logic output channel 1 (Side B) | Unidirectional output mirroring IN1; matches OUT2 in drive strength and timing characteristics. |
| 8 - VDDB | Side B power supply input | Bypass with 0.1µF ceramic capacitor to GNDB; sets logic-high level on output side (1.71–5.5V). |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Isolation | 5kVRMS withstand (60s), 848VRMS working voltage, and ±12.8kV surge immunity - certified to UL1577 and pending VDE 0884-11 for functional safety in ASIL-B systems. |
| High-Speed Unidirectional Operation | 200Mbps max data rate with 7ns propagation delay and 7.5ps RMS clock jitter - preserves signal integrity in high-frequency isolated serial links. |
| Low-Power Architecture | 0.78mW/channel at 1Mbps and 1.8V - cuts total isolation power by >50% vs. legacy optocouplers, easing thermal design in dense BMS PCBs. |
| Independent Dual-Supply Flexibility | VDDA and VDDB each support 1.71–5.5V - enables seamless level translation between 1.8V MCU I/O and 3.3V/5V peripheral buses without external translators. |
| Robust Transient Immunity | 50kV/μs CMTI and built-in UVLO with default-output fail-safe behavior - prevents metastability and latch-up during power sequencing or EMI events. |
Applications
| Automotive Battery Management | Industrial Isolated SPI |
|---|---|
Use Scenario: Isolating cell monitor ICs (e.g., MAX17853) from MCU in 400–800V EV battery packs. IC Role / Device Role / Timing Role: Unidirectional signal isolator transmitting voltage/temperature telemetry from high-side domain to low-side controller. Use Value: Enables safe, high-CMTI communication across 5kVRMS barrier while maintaining <10ns timing alignment for synchronized sampling. |
Use Scenario: Isolating SPI clock, MOSI, MISO, and CS lines between host MCU and isolated ADC/DAC in PLC analog I/O modules. IC Role / Device Role / Timing Role: Dual-channel unidirectional isolator handling MOSI/CS (A→B) and MISO (A←B) - though MAX22245 is A→B only, requiring paired use or MAX22246 for bidirectional. Use Value: Supports 200Mbps SPI clocking with sub-10ns skew, eliminating timing margin loss in high-resolution data acquisition. |
| EV Onboard Charger Control | Motor Drive Gate Driver Interface |
Use Scenario: Isolating digital control signals (enable, fault, soft-start) between low-voltage MCU and high-voltage PFC/DC-DC stages in OBCs. IC Role / Device Role / Timing Role: Reinforced isolator providing functional safety separation for command and status signals in 1.5kW+ charger topologies. Use Value: Withstands 848VRMS working voltage and ±12.8kV surges per IEC 61000-4-5, meeting automotive EMC and isolation standards. |
Use Scenario: Isolating PWM signals from MCU to gate drivers (e.g., MAX22702) in three-phase inverter stacks for traction motors. IC Role / Device Role / Timing Role: Low-jitter, low-delay isolator preserving edge accuracy of 20–100kHz PWM waveforms across isolation boundary. Use Value: 7.5ps RMS clock jitter and 2ns channel-to-channel skew minimize dead-time uncertainty and reduce torque ripple. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8622ED-B-IS | 2-channel, 200Mbps, 5kVRMS, but uses silicon dioxide isolation; no AEC-Q100 qualification; 2.5–5.5V supply only. | Lacks automotive qualification and 1.71V low-voltage support - unsuitable for 1.8V MCU interfaces in BMS. | Prefer MAX22245FAWA+T when AEC-Q100 compliance, 1.8V operation, or higher surge immunity (±12.8kV vs. ±10kV) is required. |
| ISO6721FDWR | 2-channel, 50Mbps, 5kVRMS, 1.71–5.5V, AEC-Q100 qualified - but lower speed and higher 12ns propagation delay. | Insufficient for >100Mbps SPI or fast serial telemetry; higher latency limits closed-loop response in motor control. | Choose MAX22245FAWA+T where 200Mbps throughput, 7ns delay, and 50kV/μs CMTI are critical for real-time isolation. |
Compared with Si8622ED-B-IS and ISO6721FDWR, the MAX22245FAWA+T uniquely combines AEC-Q100 qualification, 1.8V-compatible dual supplies, 200Mbps speed, and industry-leading 50kV/μs CMTI - making it the only option meeting full functional safety and high-speed requirements in next-gen EV power electronics.
Availability
MAX22245FAWA+T is available at Aetrix Electronics and suitable for automotive battery management systems, industrial isolated SPI interfaces, and EV onboard charger control requiring stable component supply and long-term lifecycle assurance.
Supply support for MAX22245FAWA+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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, automotive, and communications markets since 1965.
The MAX22245FAWA+T belongs to Analog Devices' reinforced digital isolator product line, engineered specifically for functional safety-critical isolation in electric vehicle power systems and industrial automation where reliability, speed, and regulatory compliance are non-negotiable.
FAQ
What is the isolation voltage rating of the MAX22245FAWA+T?
The MAX22245FAWA+T has a reinforced isolation rating of 5000VRMS for 60 seconds (VISO), a maximum working voltage of 848VRMS (VIOWM), and withstands ±12.8kV surge per IEC 61000-4-5. These values are validated per UL1577 and pending VDE 0884-11 certification - confirming suitability for ASIL-B automotive systems and industrial 600V+ bus applications.
Does the MAX22245FAWA+T support different supply voltages on each side?
Yes, the MAX22245FAWA+T supports independent supply rails: VDDA (1.71–5.5V relative to GNDA) and VDDB (1.71–5.5V relative to GNDB). This enables true level translation - for example, interfacing a 1.8V microcontroller on Side A with a 3.3V ADC on Side B - without external level shifters or shared ground constraints.
How does the MAX22245FAWA+T differ from the MAX22246 variant?
The MAX22245FAWA+T features two unidirectional channels both operating from Side A to Side B (IN1→OUT1, IN2→OUT2). In contrast, the MAX22246 supports bidirectional isolation (e.g., IN1→OUT1 and OUT2←IN2), making it ideal for RS-232/RS-485 transceivers. Pinouts differ: MAX22245FAWA+T has IN1/IN2 on pins 2/3 and OUT1/OUT2 on pins 7/6; MAX22246 swaps one output to pin 7 and one input to pin 7.
Is the MAX22245FAWA+T AEC-Q100 qualified?
Yes, the MAX22245FAWA+T carries the /V suffix (confirmed by part number suffix "FAWA+T" - where "V" denotes AEC-Q100 Grade 0 qualification), and is rated for -40°C to +125°C operation with 100% production testing at both temperatures. It meets stress test requirements for automotive powertrain and battery systems per AEC-Q100 Rev H.
What is the typical power consumption of the MAX22245FAWA+T at 1Mbps?
At 1Mbps and 1.8V supply, the MAX22245FAWA+T consumes 0.78mW per channel (1.56mW total), and at 3.3V it consumes 1.47mW per channel (2.94mW total). These values reflect combined side-A and side-B supply current - verified in datasheet Table "MAX22245 SUPPLY CURRENT" under 500kHz square wave conditions with CL = 0pF.
MAX22245FAWA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX22245FAWA+T FAQ
1.How can I place an order for MAX22245FAWA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22245FAWA+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 MAX22245FAWA+T reliable?
The price and inventory of MAX22245FAWA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22245FAWA+T is usually 5 days.
3.What payment methods are accepted for MAX22245FAWA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22245FAWA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22245FAWA+T?
MAX22245FAWA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22245FAWA+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 MAX22245FAWA+T?
For technical support, including MAX22245FAWA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22245FAWA+T requirements.
6.How does Aetrix verify that MAX22245FAWA+T is sourced from the original manufacturer or authorized distributors?
All MAX22245FAWA+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 MAX22245FAWA+T meets industry standards.
7.What is the process for return or replacement of MAX22245FAWA+T?
All MAX22245FAWA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX22245FAWA+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 MAX22245FAWA+T part is unused and in its original packaging.
Return procedure for MAX22245FAWA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX22245FAWA+T Tags
-
ISO1212DBQR
Texas Instruments
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ISO6721BDR
Texas Instruments
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SI8710AC-B-ISR
Skyworks Solutions Inc.
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ISO7720FDR
Texas Instruments
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ISO7721DR
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ISO7721FDR
Texas Instruments
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SI8710CC-B-ISR
Skyworks Solutions Inc.
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ISO6741FQDWRQ1
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ISO7721DWVR
Texas Instruments
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ISO7762FDBQR
Texas Instruments
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ISO7741DWR
Texas Instruments
-
ISO7741FDWR
Texas Instruments
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