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Analog Devices Inc./Maxim Integrated MAX22245FAWA/V+T
- Part No.:
- MAX22245FAWA/V+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX22245FAWA/V+T.pdf
- Description:
- 2-CHANNEL REINFORCED DIGITAL ISO
- Quantity:
- Payment:
- Shipping:
Inventory:3,482
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Product details
Overview
MAX22245FAWA/V+T from Analog Devices is a reinforced, fast, low-power, two-channel digital isolator with unidirectional signal flow across galvanically isolated domains. It delivers 200Mbps maximum data rate, 7ns typical propagation delay at 3.3V, and 50kV/μs common-mode transient immunity (CMTI), enabling robust isolation in automotive battery management systems (BMS) and high-noise motor drive interfaces.
For engineers reviewing the MAX22245FAWA/V+T datasheet, MAX22245FAWA/V+T pinout, MAX22245FAWA/V+T application, or MAX22245FAWA/V+T equivalent, this page provides verified technical context, exact pin functions, real-world application mappings, and validated alternative options for AEC-Q100-compliant isolated communication design.
Technical Context
The MAX22245FAWA/V+T implements two independent unidirectional isolation channels using Analog Devices' proprietary capacitive isolation technology. It features reinforced insulation rated to 5kVRMS for 60s (VISO), 848VRMS continuous working voltage (VIOWM), and ±12.8kV surge withstand between GNDA and GNDB.
Each side supports independent 1.71V–5.5V supplies (VDDA/GNDA and VDDB/GNDB), enabling level translation alongside isolation. The device includes undervoltage lockout (1.6V threshold) and refresh circuitry to maintain output accuracy during static input conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating (VISO) | 5000VRMS for 60s - meets reinforced insulation requirements per IEC 60747-5-5 and UL1577. |
| Max Data Rate | 200Mbps - supports high-speed SPI, CAN FD, and isolated ADC interface timing budgets. |
| Propagation Delay | 7ns typ at VDD = 3.3V - enables sub-10ns loop timing in closed-loop motor control feedback paths. |
| CMTI | 50kV/μs typ - prevents false triggering in high-dV/dt environments like IGBT gate drivers and inverters. |
| Supply Range | 1.71V–5.5V per side - allows direct interfacing with 1.8V microcontrollers and 3.3V/5V peripherals without external level shifters. |
| Power @ 1Mbps | 0.78mW/channel at 1.8V - reduces thermal load in compact automotive ECUs and enables battery-powered isolated sensors. |
| Operating Temp | −40°C to +125°C - qualified for under-hood automotive use and industrial motor drives. |
Pinout & Package
MAX22245FAWA/V+T is housed in an 8-pin wide-body SOIC package (W8MS+7) with 8mm creepage and clearance, RoHS-compliant, and rated for reinforced insulation.
| 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) | Accepts CMOS/TTL signals; drives isolated output OUT1 on Side B. |
| 3 - IN2 | Logic input channel 2 (Side A) | Independent second input; drives isolated output OUT2 on Side B. |
| 4 - GNDA | Side A ground reference | Must be isolated from GNDB; forms primary-side return path for VDDA and inputs. |
| 5 - GNDB | Side B ground reference | Must be isolated from GNDA; forms secondary-side return path for VDDB and outputs. |
| 6 - OUT2 | Logic output channel 2 (Side B) | Push-pull driver; no external pull-up required; referenced to VDDB/GNDB. |
| 7 - OUT1 | Logic output channel 1 (Side B) | Push-pull driver; matches IN1 direction; compatible with 1.8V–5.5V logic loads. |
| 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 |
|---|---|
| AEC-Q100 Grade 0 qualification | Validated for automotive operation from −40°C to +125°C ambient, including temperature cycling and HAST testing. |
| Reinforced galvanic isolation | Meets VDE 0884-11 (pending) and UL1577 standards; eliminates need for dual basic isolation components in safety-critical BMS designs. |
| Low-power operation | 0.78mW/channel at 1Mbps/1.8V - cuts system-level dissipation by >40% vs. legacy optocouplers in always-on monitoring circuits. |
| High CMTI (50kV/μs) | Prevents data corruption in 1000V/μs switching transients common in SiC-based inverters and fast-switching DC-DC converters. |
| Independent dual-supply architecture | VDDA and VDDB operate independently - enables seamless 1.8V MCU-to-5V sensor or actuator interfacing without external level translators. |
Applications
| Automotive Battery Management System (BMS) | Industrial Isolated SPI Interface |
|---|---|
Use Scenario: Isolating cell monitor ICs (e.g., MAX17852) from MCU host across high-voltage battery packs (up to 1000V). IC Role / Device Role / Timing Role: Unidirectional digital isolator transferring voltage/current measurement data from isolated slave to master controller. Use Value: Enables safe, noise-immune communication while meeting ASIL-D functional safety requirements via reinforced insulation and 125°C operation. | Use Scenario: Isolating SPI clock, MOSI, MISO, and CS lines between PLC CPU and isolated analog input/output modules. IC Role / Device Role / Timing Role: Dual-channel isolator preserving full-duplex SPI timing integrity up to 200Mbps with <10ns skew. Use Value: Eliminates ground loops and EMI-induced bit errors in factory-floor automation systems with long cable runs and variable grounding. |
| Motor Drive Gate Driver Interface | Isolated RS-485 Transceiver Interface |
Use Scenario: Transmitting PWM enable and fault signals between isolated gate driver ICs (e.g., ADUM4135) and MCU in 3-phase inverter stacks. IC Role / Device Role / Timing Role: Low-latency, high-CMTI isolator carrying critical control and protection signals across 600V+ potential differences. Use Value: Guarantees <7ns propagation delay and <2ns channel-to-channel skew to maintain precise dead-time control and prevent shoot-through. | Use Scenario: Isolating TX/RX lines of RS-485 transceivers (e.g., MAX14840) in building automation networks exposed to lightning-induced surges. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional isolator pair (used as two independent channels) protecting transceiver PHY from ground faults. Use Value: Withstands ±12.8kV surge (1.2/50μs) and 848VRMS working voltage - exceeds IEC 61000-4-5 Level 4 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8621ED-B-IS | 2-channel, 150Mbps max, 2.5kVRMS isolation, 100kV/μs CMTI, 1.7–5.5V supplies | Lacks AEC-Q100 qualification; lower VISO rating limits use in automotive BMS primary isolation barriers | Preferred for cost-sensitive industrial RS-485 isolation where AEC-Q100 is not required. |
| ISO6721FDWR | 2-channel, 50Mbps max, 5000VRMS reinforced isolation, 80kV/μs CMTI, 1.7–5.5V supplies, automotive-grade (AEC-Q100) | Lower data rate restricts use in high-speed SPI or CAN FD; higher CMTI but larger SOIC-8 package footprint | Best for automotive applications requiring highest CMTI and proven field reliability at ≤50Mbps data rates. |
Compared with SI8621ED-B-IS and ISO6721FDWR, the MAX22245FAWA/V+T uniquely combines AEC-Q100 Grade 0 qualification, 200Mbps speed, and 5kVRMS reinforced isolation in a standard wide-SOIC package-making it optimal for next-generation EV battery monitors and high-bandwidth industrial PLC backplanes.
Availability
MAX22245FAWA/V+T is available at Aetrix Electronics and suitable for automotive battery management systems, industrial motor drives, and isolated communication interfaces requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.
Supply support for MAX22245FAWA/V+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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX22245FAWA/V+T belongs to Analog Devices' MAX2224x family of reinforced digital isolators, designed specifically for high-reliability automotive and industrial applications demanding low power, high speed, and certified safety isolation.
FAQ
What is the isolation voltage rating of the MAX22245FAWA/V+T?
The MAX22245FAWA/V+T has a reinforced isolation rating of 5000VRMS for 60 seconds (VISO), 848VRMS maximum working voltage (VIOWM), and 8000VPK surge withstand per IEC 60065. These values are certified per UL1577 and pending VDE 0884-11, making MAX22245FAWA/V+T suitable for primary-side isolation in automotive BMS and industrial inverters.
Does the MAX22245FAWA/V+T support different supply voltages on each side?
Yes, the MAX22245FAWA/V+T supports independent 1.71V–5.5V supplies on Side A (VDDA/GNDA) and Side B (VDDB/GNDB). This enables level translation-for example, interfacing a 1.8V microcontroller on Side A with a 3.3V or 5V peripheral on Side B-without external level shifters, and is fully specified across the entire voltage range in the MAX22245FAWA/V+T datasheet.
How does the MAX22245FAWA/V+T differ from the MAX22246FAWA/V+T?
The MAX22245FAWA/V+T features two unidirectional channels both transmitting from Side A to Side B (IN1→OUT1, IN2→OUT2), while the MAX22246FAWA/V+T has opposite-direction channels (IN1→OUT2, IN2→OUT1), making it ideal for bidirectional protocols like RS-232 or RS-485. Pinouts differ: MAX22245FAWA/V+T uses pins 2/3 as IN1/IN2 and 6/7 as OUT2/OUT1; MAX22246FAWA/V+T swaps IN1/OUT1 and IN2/OUT2 assignments.
Is the MAX22245FAWA/V+T qualified for automotive applications?
Yes, the /V suffix in MAX22245FAWA/V+T indicates AEC-Q100 Grade 0 qualification (−40°C to +125°C ambient), including stress testing for temperature cycling, humidity, and mechanical shock. It is approved for use in automotive battery management systems, onboard chargers, and traction inverter control units where reinforced isolation and long-term reliability are mandatory.
What is the default output state of the MAX22245FAWA/V+T during undervoltage lockout?
During undervoltage lockout (VDDA or VDDB < 1.6V), the MAX22245FAWA/V+T outputs enter their default state: high for the C/F variants (including MAX22245FAWA/V+T). This behavior is guaranteed per Table 2 in the MAX22245FAWA/V+T datasheet and ensures fail-safe signaling in power-loss scenarios such as BMS cell monitoring interruptions.
MAX22245FAWA/V+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/V+T FAQ
1.How can I place an order for MAX22245FAWA/V+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22245FAWA/V+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/V+T reliable?
The price and inventory of MAX22245FAWA/V+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/V+T is usually 5 days.
3.What payment methods are accepted for MAX22245FAWA/V+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22245FAWA/V+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22245FAWA/V+T?
MAX22245FAWA/V+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22245FAWA/V+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/V+T?
For technical support, including MAX22245FAWA/V+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22245FAWA/V+T requirements.
6.How does Aetrix verify that MAX22245FAWA/V+T is sourced from the original manufacturer or authorized distributors?
All MAX22245FAWA/V+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/V+T meets industry standards.
7.What is the process for return or replacement of MAX22245FAWA/V+T?
All MAX22245FAWA/V+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX22245FAWA/V+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/V+T part is unused and in its original packaging.
Return procedure for MAX22245FAWA/V+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX22245FAWA/V+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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