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Analog Devices Inc./Maxim Integrated MAX22246CAWA+T
- Part No.:
- MAX22246CAWA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX22246CAWA+T.pdf
- Description:
- REINFORCED, FAST, LOW-POWER 2-CH
- Quantity:
- Payment:
- Shipping:
Inventory:2,240
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Product details
Overview
MAX22246CAWA+T from Analog Devices is a reinforced, two-channel digital isolator with opposite-direction data flow (IN1→OUT2, IN2→OUT1), 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 MAX22246CAWA+T datasheet, MAX22246CAWA+T pinout, MAX22246CAWA+T application, or MAX22246CAWA+T equivalent, key selection criteria include reinforced isolation rating, bidirectional channel mapping, low-power operation at 1.8V–5.5V supplies, and AEC-Q100 qualification status.
Technical Context
The MAX22246CAWA+T implements reinforced galvanic isolation using Analog Devices' proprietary process, supporting independent 1.71V–5.5V supplies on each side for level translation. Its dual unidirectional channels are configured for cross-domain communication: Side A inputs drive Side B outputs, and Side B inputs drive Side A outputs.
It features 50kV/μs common-mode transient immunity, 7.5ps clock jitter RMS, and undervoltage lockout with default-high outputs. The device is rated for –40°C to +125°C operation and meets UL1577, cUL CSA 5A, and pending VDE 0884-11 reinforced insulation standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5kVRMS for 60s - ensures safety-critical barrier integrity under sustained overvoltage stress |
| Max Data Rate | 200Mbps - supports high-speed isolated serial protocols like RS-422 at full duplex |
| Propagation Delay | 7ns typ at 3.3V - minimizes timing skew in real-time control loops |
| CMTI | 50kV/μs typ - maintains signal integrity in noisy motor drive or inverter environments |
| Supply Range | 1.71V–5.5V per side - enables direct interfacing with 1.8V microcontrollers and 3.3V/5V peripherals |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive and industrial ambient conditions |
| Creepage/Clearance | 8mm - satisfies IEC 61800-5-1 and UL 61800-5-1 reinforced insulation spacing requirements |
Pinout & Package
MAX22246CAWA+T is housed in an 8-pin wide-body SOIC package (W8MS+7) with 8mm creepage and clearance, RoHS-compliant, and rated for 5kVRMS isolation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDDA | Side A power supply input | Bypass with 0.1µF capacitor to GNDA; sets logic levels for IN1/IN2 and OUT1/OUT2 referenced to GNDA |
| 2 - OUT1 | Side A output | Drives logic signals from Side B (IN1) to Side A domain; push-pull, no external pullup required |
| 3 - IN2 | Side A input | Receives logic signals from Side A domain and forwards them to Side B (OUT2) |
| 4 - GNDA | Side A ground reference | Return path for VDDA, IN1, IN2, and OUT1; galvanically isolated from GNDB |
| 5 - GNDB | Side B ground reference | Return path for VDDB, IN1, IN2, and OUT2; galvanically isolated from GNDA |
| 6 - OUT2 | Side B output | Drives logic signals from Side A (IN2) to Side B domain; push-pull, TTL/CMOS compatible |
| 7 - IN1 | Side B input | Receives logic signals from Side B domain and forwards them to Side A (OUT1) |
| 8 - VDDB | Side B power supply input | Bypass with 0.1µF capacitor to GNDB; sets logic levels for IN1/IN2 and OUT1/OUT2 referenced to GNDB |
Key Features
| Feature | Design Value |
|---|---|
| Opposite-direction channel architecture | Enables full-duplex isolated transceiver interfaces (e.g., RS-232 TX/RX) without external routing logic |
| Default-high output state | Ensures known logic level during power-up, brownout, or open-input conditions - improves system robustness |
| Low power at 1.8V | 0.78mW per channel at 1Mbps - reduces thermal load in compact BMS modules and extends battery life |
| High CMTI (50kV/μs) | Prevents data corruption in high dv/dt environments such as IGBT gate drivers and motor phase legs |
| Independent dual supplies | Supports level translation between 1.8V MCU and 5V peripheral without external level shifters |
Applications
| Isolated RS-232 Transceiver Interface | Automotive Battery Management System (BMS) |
|---|---|
Use Scenario: Isolating UART lines between a 3.3V microcontroller and a legacy RS-232 PHY in an EV charging station control module. IC Role / Device Role / Timing Role: Bidirectional digital isolator providing galvanic separation between controller and line driver, with IN1→OUT2 carrying TX and IN2→OUT1 carrying RX. Use Value: Eliminates ground loop noise and prevents fault propagation while maintaining 200Mbps timing fidelity for reliable debug and telemetry. | Use Scenario: Isolating cell monitor IC SPI bus and fault signaling lines from the main BMS controller in a 400V traction battery pack. IC Role / Device Role / Timing Role: Dual-channel isolator enabling simultaneous isolated readback of voltage/temperature data and transmission of overvoltage alerts across the isolation barrier. Use Value: Meets reinforced insulation requirements for functional safety (ISO 26262 ASIL-D) and sustains 848VRMS working voltage continuously. |
| Industrial Inverter Gate Driver Interface | Isolated CAN FD Node |
Use Scenario: Coupling PWM signals from a 5V FPGA to IGBT gate drivers in a servo drive, where high dv/dt transients exceed 50kV/μs. IC Role / Device Role / Timing Role: High-CMTI isolator transmitting control signals across isolation barrier while rejecting common-mode noise induced by fast-switching power stages. Use Value: Prevents false triggering of gate drivers and ensures <7ns propagation delay matching for precise three-phase timing alignment. | Use Scenario: Isolating a CAN FD controller (1.8V) from a 3.3V CAN transceiver in a distributed vehicle ECU network. IC Role / Device Role / Timing Role: Level-translating digital isolator enabling interoperability between low-voltage controllers and standard CAN physical layers. Use Value: Supports 5Mbps CAN FD data rates with <2ns channel-to-channel skew, preserving bit timing integrity across domains. |
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, same-direction topology; 150Mbps max data rate; 2.5kVRMS isolation rating | Not suitable for full-duplex transceiver isolation; requires external direction control logic for bidirectional use | Select only when unidirectional isolation suffices and lower isolation voltage is acceptable |
| ADUM121N1BRZ-RL7 | 2-channel, opposite-direction; 150Mbps; 3.75kVRMS; no AEC-Q100 qualification | Lacks automotive qualification and 5kVRMS rating; higher propagation delay (13ns typ) | Use in non-automotive industrial designs where cost sensitivity outweighs reinforced isolation needs |
Compared with SI8621ED-B-IS and ADUM121N1BRZ-RL7, MAX22246CAWA+T delivers higher isolation voltage, faster data rate, lower propagation delay, and AEC-Q100 qualification - making it the preferred choice for automotive BMS and high-reliability inverter control.
Availability
MAX22246CAWA+T is available at Aetrix Electronics and suitable for automotive battery management systems, industrial inverters, isolated RS-232/RS-485 interfaces, and high-CMTI motor control applications requiring stable component supply and long-term lifecycle support.
Supply support for MAX22246CAWA+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, and automotive markets.
The MAX22246CAWA+T belongs to Analog Devices' MAX2224x family of reinforced digital isolators, designed specifically for functional safety-critical isolation in electric vehicle powertrain and battery systems.
FAQ
What is the isolation voltage rating of the MAX22246CAWA+T and how is it certified?
The MAX22246CAWA+T has a 5kVRMS withstand voltage rating for 60 seconds and is certified to UL1577 (File E351759), cUL CSA Bulletin 5A, and pending VDE 0884-11 reinforced insulation. It continuously withstands 848VRMS (VIOWM) and survives ±12.8kV surge per IEC 61000-4-5. These ratings are verified through production testing and third-party certification - not just design guarantee.
How does the MAX22246CAWA+T differ from the MAX22245 in pin function and application use?
The MAX22246CAWA+T uses opposite-direction channel mapping (IN1→OUT2, IN2→OUT1), while the MAX22245 uses same-direction mapping (IN1→OUT1, IN2→OUT2). This makes MAX22246CAWA+T ideal for isolated transceivers like RS-232, whereas MAX22245 suits isolated digital I/O or SPI. Pin 2 is OUT1 (not IN1) and pin 7 is IN1 (not OUT1) - critical for PCB layout compatibility.
Does the MAX22246CAWA+T support AEC-Q100 qualification and what grade is it rated for?
Yes, the MAX22246CAWA+T carries the /V suffix in its full ordering code (e.g., MAX22246CAWA+T/V), indicating AEC-Q100 Grade 0 qualification (–40°C to +150°C junction). The device is 100% production tested at +25°C and +125°C ambient, with guaranteed performance across –40°C to +125°C operating temperature range.
What are the power consumption characteristics of the MAX22246CAWA+T at 1.8V and 100Mbps?
At 1.8V supply and 100Mbps data rate, the MAX22246CAWA+T consumes 3.28mW per channel - totaling 6.56mW for both channels. This value includes dynamic switching current and is measured with CL = 0pF. Real-world dissipation increases with capacitive load (e.g., +1.875mA for 15pF at 100Mbps), but remains significantly lower than legacy optocouplers.
Can the MAX22246CAWA+T be used for level translation between different logic families?
Yes, the MAX22246CAWA+T supports independent 1.71V–5.5V supplies on Side A (VDDA/GNDA) and Side B (VDDB/GNDB), enabling seamless level translation - for example, interfacing a 1.8V FPGA I/O to a 5V RS-485 transceiver. Input thresholds scale with VDD_, and outputs swing rail-to-rail, eliminating need for external level shifters or resistive dividers.
MAX22246CAWA+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
MAX22246CAWA+T FAQ
1.How can I place an order for MAX22246CAWA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22246CAWA+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 MAX22246CAWA+T reliable?
The price and inventory of MAX22246CAWA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22246CAWA+T is usually 5 days.
3.What payment methods are accepted for MAX22246CAWA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22246CAWA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22246CAWA+T?
MAX22246CAWA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22246CAWA+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 MAX22246CAWA+T?
For technical support, including MAX22246CAWA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22246CAWA+T requirements.
6.How does Aetrix verify that MAX22246CAWA+T is sourced from the original manufacturer or authorized distributors?
All MAX22246CAWA+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 MAX22246CAWA+T meets industry standards.
7.What is the process for return or replacement of MAX22246CAWA+T?
All MAX22246CAWA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX22246CAWA+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 MAX22246CAWA+T part is unused and in its original packaging.
Return procedure for MAX22246CAWA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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