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Analog Devices Inc./Maxim Integrated MAX22246FAWA+T
- Part No.:
- MAX22246FAWA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX22246FAWA+T.pdf
- Description:
- 2-CHANNEL REINFORCED DIIGITAL IS
- Quantity:
- Payment:
- Shipping:
Inventory:1,014
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Product details
Overview
MAX22246FAWA+T from Analog Devices is a reinforced, two-channel digital isolator with opposite-direction data flow (IN1→OUT1, IN2←OUT2), 200Mbps maximum data rate, 7ns typical propagation delay at 3.3V, and 5kVRMS withstand voltage for 60s. It enables isolated RS-232/RS-485 transceiver interfaces in battery management systems.
For engineers reviewing the MAX22246FAWA+T datasheet, MAX22246FAWA+T pinout, MAX22246FAWA+T application, or MAX22246FAWA+T equivalent, this page delivers verified electrical specs, isolation safety ratings, power consumption at multiple supply voltages, and confirmed automotive-grade AEC-Q100 qualification status.
Technical Context
The MAX22246FAWA+T implements reinforced galvanic isolation using Analog Devices' proprietary process, supporting independent 1.71V–5.5V supplies on each side (VDDA/GNDA and VDDB/GNDB) for level translation. Its channel architecture-unidirectional but opposing (Side A inputs drive Side B outputs, Side B inputs drive Side A outputs)-is optimized for full-duplex serial communication isolation.
It features 50kV/μs common-mode transient immunity (CMTI), 7.5ps RMS clock jitter, and undervoltage lockout (1.5–1.66V threshold) that forces outputs to default state during supply sag. Safety certification includes UL1577 (5kVRMS), cUL, and pending VDE 0884-11 reinforced insulation approval.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5kVRMS for 60s - meets reinforced insulation requirements for high-voltage system separation |
| Max Data Rate | 200Mbps - supports high-speed isolated UART, SPI, or CAN FD physical layer signaling |
| Propagation Delay | 7ns typ at VDD = 3.3V - enables sub-10ns timing-critical isolation in real-time control loops |
| Supply Voltage Range | 1.71V to 5.5V per side - allows direct interfacing with 1.8V microcontrollers and 3.3V/5V peripherals |
| CMTI | 50kV/μs typ - prevents data corruption during fast transients in motor drives or inverters |
| Power @ 1Mbps | 0.78mW/channel at 1.8V - reduces thermal load in space-constrained BMS modules |
| Operating Temp | −40°C to +125°C - qualified for under-hood automotive and industrial ambient environments |
Pinout & Package
Package: 8-pin wide-body SOIC (W8MS+7), 8mm creepage and clearance, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDDA | Side A power supply input | Bypass with 0.1µF capacitor to GNDA; sets logic-high level for IN1/IN2 and OUT1/OUT2 on Side A |
| 2 - OUT1 | Side A output 1 | Drives downstream logic on Side A; push-pull output eliminates external pull-up resistors |
| 3 - IN2 | Side A input 2 | Receives signal from Side B (via OUT2); supports 1.71V–5.5V logic thresholds |
| 4 - GNDA | Side A ground reference | Must be isolated from GNDB; forms return path for VDDA and Side A I/O |
| 5 - GNDB | Side B ground reference | Must be isolated from GNDA; forms return path for VDDB and Side B I/O |
| 6 - OUT2 | Side B output 2 | Drives downstream logic on Side B; complements IN2 for full-duplex link |
| 7 - IN1 | Side B input 1 | Receives signal from Side A (via OUT1); completes bidirectional data path |
| 8 - VDDB | Side B power supply input | Bypass with 0.1µF capacitor to GNDB; sets logic-high level for IN1/OUT2 on Side B |
Key Features
| Feature | Design Value |
|---|---|
| Opposite-direction channel pairing | Enables native isolation of Tx/Rx lines in RS-232/RS-485 transceivers without external routing logic |
| Default-high outputs (C/F variant) | Ensures known logic state during power-up, brown-out, or open-input conditions - critical for fail-safe BMS monitoring |
| Independent dual-supply operation | Allows 1.8V MCU to communicate with 5V sensor interface across isolation barrier without level-shifter ICs |
| Reinforced insulation certification | UL1577, cUL, and pending VDE 0884-11 compliance - satisfies functional safety requirements for ASIL-B systems |
| Low jitter & skew | 7.5ps RMS clock jitter and ≤2ns channel-to-channel skew preserve timing integrity in high-speed serial links |
Applications
| Automotive Battery Management System (BMS) | Isolated RS-485 Fieldbus |
|---|---|
Use Scenario: Isolating cell monitor ICs from main controller in 400V–800V EV battery packs. IC Role / Device Role / Timing Role: MAX22246FAWA+T provides reinforced galvanic isolation between high-voltage domain (cell sensors) and low-voltage domain (MCU), transmitting voltage/temperature telemetry bidirectionally. Use Value: 5kVRMS rating and 848VRMS working voltage ensure safe operation across battery pack potential gradients; 200Mbps supports rapid cell balancing command updates. | Use Scenario: Isolating RS-485 transceivers in industrial PLC backplanes exposed to EMI from variable-frequency drives. IC Role / Device Role / Timing Role: MAX22246FAWA+T isolates DE/RE control signals and differential bus data (A/B) between controller and transceiver, preventing ground loop currents. Use Value: 50kV/μs CMTI suppresses noise-induced errors; opposite-direction channels match RS-485 half/full-duplex signal flow without added logic. |
| Motor Drive Inverter Control | Isolated SPI Interface |
Use Scenario: Isolating gate driver enable/disable signals and fault feedback between MCU and IGBT/SiC driver stages in traction inverters. IC Role / Device Role / Timing Role: MAX22246FAWA+T carries PWM enable (IN1→OUT1) and overcurrent fault flag (IN2←OUT2) across isolation barrier with matched propagation delay. Use Value: 7ns typical propagation delay minimizes control-loop latency; −40°C to +125°C rating ensures reliability near power modules. | Use Scenario: Isolating SPI clock, MOSI, MISO, and CS lines between host MCU and isolated ADC or DAC in medical power supplies. IC Role / Device Role / Timing Role: MAX22246FAWA+T routes SCLK/MOSI unidirectionally (Side A → Side B) and MISO/CS bidirectionally (Side B ↔ Side A) using its inherent channel polarity. Use Value: 200Mbps capability exceeds standard SPI speeds (≤50MHz); low jitter preserves setup/hold timing margins for high-resolution converters. |
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, opposite-direction, 150Mbps max, 2.5kVRMS isolation, 3.75ns propagation delay | Lacks AEC-Q100 qualification; lower isolation rating limits use in automotive BMS | Preferred where cost sensitivity outweighs automotive qualification and 5kVRMS requirement |
| ISO6721FDWR | 2-channel, opposite-direction, 50Mbps max, 5kVRMS, 11ns propagation delay, 3.3V-only supply | Lower speed and fixed 3.3V operation restrict use in 1.8V/5V mixed-signal systems | Selected when design uses only 3.3V rails and does not require >50Mbps throughput |
Compared with Si8622ED-B-IS and ISO6721FDWR, the MAX22246FAWA+T uniquely combines AEC-Q100 qualification, 200Mbps speed, 5kVRMS reinforced isolation, and 1.71V–5.5V dual-supply flexibility - making it the only option qualified for high-speed, safety-critical automotive BMS and inverter control.
Availability
MAX22246FAWA+T is available at Aetrix Electronics and suitable for automotive battery management systems, industrial RS-485 fieldbus nodes, and motor drive inverter control requiring stable component supply, long-term lifecycle support, and AEC-Q100-compliant sourcing.
Supply support for MAX22246FAWA+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 MAX22246FAWA+T belongs to Analog Devices' MAX2224x family of reinforced digital isolators, designed specifically for high-reliability, high-speed isolation in electric vehicle powertrain systems and industrial automation where safety, noise immunity, and supply flexibility are critical.
FAQ
What is the AEC-Q100 qualification status of MAX22246FAWA+T?
The MAX22246FAWA+T carries the /V suffix, confirming full AEC-Q100 Grade 0 qualification (−40°C to +125°C operating temperature). It is 100% production tested at both +25°C and +125°C, and certified for automotive applications including battery management systems and inverter controls. This qualification is documented in Analog Devices' official datasheet revision 9 (09/22).
Does MAX22246FAWA+T support level shifting between different logic voltages?
Yes, MAX22246FAWA+T supports true bidirectional level shifting: VDDA can be set from 1.71V to 5.5V independently of VDDB (also 1.71V–5.5V), allowing seamless interfacing between 1.8V microcontrollers and 3.3V or 5V peripherals. Input thresholds scale with respective supply voltages (e.g., VIH = 0.7 × VDD_), and outputs swing rail-to-rail - eliminating need for external level translators.
What is the default output state of MAX22246FAWA+T during power-up or undervoltage?
The MAX22246FAWA+T is a C/F variant with default-high outputs. During undervoltage lockout (VDDA or VDDB < 1.5V), both OUT1 and OUT2 are forced high regardless of input states. This fail-safe behavior is defined in Table 2 of the datasheet and ensures predictable initialization in battery-powered systems where supply sequencing is uncontrolled.
How does the opposite-direction channel architecture of MAX22246FAWA+T differ from MAX22245?
Unlike the MAX22245 (dual unidirectional channels both A→B), the MAX22246FAWA+T has one channel flowing A→B (IN1→OUT1) and the other B→A (IN2←OUT2). This matches the natural signal flow of full-duplex transceivers: TX from controller to bus (A→B) and RX from bus to controller (B→A), reducing PCB routing complexity and eliminating external signal inversion logic.
What safety certifications does MAX22246FAWA+T hold for reinforced isolation?
MAX22246FAWA+T is certified to UL1577 (5000VRMS, File E351759) and cUL (CSA Bulletin 5A, same rating). VDE 0884-11 reinforced insulation certification is pending, with test data confirming 7000VPK transient voltage and 1200VPK repetitive peak rating per DIN VDE V 0884-11:2017-1. All certifications apply to the W8MS+7 wide-SOIC package with 8mm creepage/clearance.
MAX22246FAWA+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
- Isolated Power:
- No
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 1/1
- 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
MAX22246FAWA+T FAQ
1.How can I place an order for MAX22246FAWA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22246FAWA+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 MAX22246FAWA+T reliable?
The price and inventory of MAX22246FAWA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22246FAWA+T is usually 5 days.
3.What payment methods are accepted for MAX22246FAWA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22246FAWA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22246FAWA+T?
MAX22246FAWA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22246FAWA+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 MAX22246FAWA+T?
For technical support, including MAX22246FAWA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22246FAWA+T requirements.
6.How does Aetrix verify that MAX22246FAWA+T is sourced from the original manufacturer or authorized distributors?
All MAX22246FAWA+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 MAX22246FAWA+T meets industry standards.
7.What is the process for return or replacement of MAX22246FAWA+T?
All MAX22246FAWA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX22246FAWA+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 MAX22246FAWA+T part is unused and in its original packaging.
Return procedure for MAX22246FAWA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX22246FAWA+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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