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Analog Devices Inc./Maxim Integrated MAX22344CAAP+
- Part No.:
- MAX22344CAAP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
MAX22344CAAP+.pdf
- Description:
- DGT ISOL 3750VRMS 4CH CAN 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:8,576
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Product details
Overview
MAX22344CAAP+ from Maxim Integrated is a reinforced 4-channel digital galvanic isolator with 3.75kVRMS withstand voltage, 200Mbps maximum data rate, and ultra-low power consumption of 0.74mW per channel at 1Mbps (1.8V). It enables isolated SPI, RS-485, and digital I/O in industrial automation, battery management, and medical systems by transferring signals across independent 1.71V–5.5V power domains.
For engineers reviewing the MAX22344CAAP+ datasheet, MAX22344CAAP+ pinout, MAX22344CAAP+ application, or MAX22344CAAP+ equivalent, this device delivers high CMTI (50kV/μs), pin-selectable output default states, and 20-pin SSOP packaging with 5.5mm creepage/clearance - critical for safety-certified isolation designs requiring low jitter (<100ps peak eye) and wide temperature operation (–40°C to +125°C).
Technical Context
The MAX22344CAAP+ implements capacitive-based galvanic isolation with proprietary process technology, supporting unidirectional signal transfer across four independent channels. Its architecture includes independent A-side and B-side supplies, active-high enable inputs, and configurable output default states (high/low) selected via DEFA/DEFB pins.
It achieves 200Mbps operation with propagation delays as low as 4.1ns (tPLH, VDD = 4.5–5.5V), pulse width distortion under 2.0ns, and channel-to-channel skew ≤2.0ns. Reinforced isolation meets VDE 0884-11, UL1577, and CSA Bulletin 5A standards, with 784VRMS continuous working voltage and ±10kV surge immunity (1.2/50μs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Withstand Voltage | 3.75kVRMS for 60s - certifies reinforced insulation for safety-critical industrial and medical applications |
| Maximum Data Rate | 200Mbps - supports high-speed isolated SPI and real-time fieldbus communication |
| Power per Channel | 0.74mW at 1Mbps (1.8V) - enables ultra-low-power isolated sensing and battery-powered systems |
| Common-Mode Transient Immunity | 50kV/μs typical - ensures reliable operation in noisy motor drives and power converters |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial PLC, and energy storage environments |
| Supply Voltage Range | 1.71V to 5.5V per side - allows level translation between mixed-voltage subsystems (e.g., 1.8V MCU ↔ 3.3V sensor) |
| Propagation Delay Skew | ≤2.0ns (channel-to-channel, same direction) - preserves timing integrity in parallel data paths |
Pinout & Package
Package: 20-pin SSOP (A20MS+7), 5.5mm creepage and clearance, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 19, 20 | OUT1, OUT2, OUT3, OUT4 | Isolated logic outputs on Side B - drive downstream receivers with VOH ≥ VDDB – 0.4V, VOL ≤ 0.4V |
| 3, 4, 17, 18 | IN1, IN2, IN3, IN4 | Input signals on Side A - accept VIH ≥ 0.7×VDDA, VIL ≤ 0.8V with 2pF input capacitance |
| 5, 6 | DEFA, DEFB | Output default state select - configure outputs to default high or low during power-up or open-circuit input |
| 7, 8 | ENB, ENA | Active-high enable inputs - control output drivers independently; ENA enables OUT1–OUT4 |
| 9, 12 | GNDA, GNDB | Isolated ground references - separate return paths for Side A and Side B circuitry |
| 10, 11, 13, 14, 15, 16 | VDDA, VDDB, N.C. | VDDA/VDDB: 1.71–5.5V supplies; N.C.: no-connect pins - must be left floating or tied to GNDA/GNDB per layout guidelines |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Isolation Certification | VDE 0884-11, UL1577, cUL - eliminates need for external safety components in IEC 61800-5-1 or IEC 62368-1 systems |
| Configurable Output Default State | Pin-selectable high/low via DEFA/DEFB - prevents undefined logic states during power sequencing or fault conditions |
| Low-Jitter Signal Transfer | 7.5ps RMS clock jitter, <100ps peak eye diagram jitter at 200Mbps - maintains signal integrity in high-speed serial links |
| High CMTI Performance | 50kV/μs typical - suppresses false triggering in high-dv/dt environments like inverters and HV battery monitoring |
| Wide Supply Flexibility | 1.71V–5.5V on both sides - enables direct interfacing with modern low-voltage MCUs and legacy 5V peripherals |
Applications
| Isolated SPI Interface | Industrial Fieldbus Communication |
|---|---|
Use Scenario: Isolating SPI bus between microcontroller (Side A) and isolated ADC or DAC (Side B) in motor control drives. IC Role / Device Role / Timing Role: Bidirectional galvanic barrier for SCLK, MOSI, MISO, and CS signals with sub-10ns propagation delay matching. Use Value: Prevents ground loop noise from corrupting 16-bit ADC readings while maintaining full 200Mbps SPI throughput. |
Use Scenario: Signal isolation in RS-485 transceiver interfaces for programmable logic controllers (PLCs) in factory automation. IC Role / Device Role / Timing Role: Unidirectional isolator for TX/RX lines and half-duplex control signals, supporting 25Mbps or 200Mbps data rates. Use Value: Enables robust communication over 1200m cable runs with immunity to >50kV/μs transients induced by nearby contactors or VFDs. |
| Battery Management Systems | Medical Isolation Systems |
Use Scenario: Isolating cell voltage monitoring ICs from host controller in EV traction battery packs. IC Role / Device Role / Timing Role: Four-channel unidirectional isolator for analog front-end status signals and fault alerts across 400V+ potential differences. Use Value: Meets reinforced isolation requirements for ASIL-D functional safety while consuming <3.2mW total at 100Mbps. |
Use Scenario: Patient-connected ECG or EEG front-end isolation in diagnostic equipment compliant with IEC 60601-1 3rd edition. IC Role / Device Role / Timing Role: Reinforced barrier for digital control and data lines between patient-isolated analog section and main processor. Use Value: Achieves 3.75kVRMS withstand and 784VRMS working voltage - satisfies creepage/clearance and leakage current limits for CF-rated devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8641ED-IS | 25Mbps max data rate, 2.5kVRMS isolation, 16-pin SOIC package | Limited to lower-speed industrial I/O; lacks 200Mbps capability and pin-selectable defaults | Choose when cost sensitivity outweighs speed and configurability needs in non-safety-critical designs |
| ADUM2401ARWZ | 25Mbps, 2.5kVRMS, 16-pin SOIC, no output default configuration pins | No DEFA/DEFB control; fixed default state; lower CMTI (25kV/μs) | Select for legacy compatibility where existing ADuM240x layouts exist and 200Mbps is unnecessary |
Compared with Si8641ED-IS and ADUM2401ARWZ, the MAX22344CAAP+ provides 8× higher data rate, reinforced 3.75kVRMS isolation, and design flexibility via pin-selectable defaults - making it suitable for next-generation BMS, high-fidelity medical sensors, and fast industrial networks where timing precision and safety margins are non-negotiable.
Availability
MAX22344CAAP+ is available at Aetrix Electronics and suitable for industrial automation, battery management systems, and medical diagnostics requiring stable component supply, long-term lifecycle support, and certified reinforced isolation performance.
Supply support for MAX22344CAAP+ 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
Maxim Integrated, now part of Analog Devices, designs high-performance analog and mixed-signal ICs for demanding industrial, automotive, and healthcare applications.
The MAX22344–MAX22346 family targets high-reliability isolation in space-constrained, thermally aggressive environments - delivering low-power, high-speed galvanic barriers with certified reinforced insulation for functional safety compliance.
FAQ
What is the maximum data rate supported by the MAX22344CAAP+?
The MAX22344CAAP+ supports a maximum data rate of 200Mbps under standard operating conditions (VDD ≥ 2.25V). At lower supply voltages (1.71V–2.25V), the guaranteed maximum data rate is 150Mbps. This high-speed capability enables its use in isolated high-throughput interfaces such as SPI and fast fieldbus protocols, and is validated across the full –40°C to +125°C temperature range.
Does the MAX22344CAAP+ support independent voltage supplies on each side?
Yes, the MAX22344CAAP+ supports independent 1.71V to 5.5V supplies on Side A (VDDA) and Side B (VDDB). This dual-supply architecture enables level translation between disparate voltage domains - for example, interfacing a 1.8V microcontroller with a 3.3V isolated transceiver - without external level shifters, and is fully specified across all combinations within the rated range.
How does the MAX22344CAAP+ handle output behavior during power-up or input float?
The MAX22344CAAP+ uses DEFA and DEFB pins to set the default output state (high or low) when inputs are unpowered or open-circuit. This feature ensures deterministic logic levels during power sequencing or fault conditions - critical for preventing unintended actuator activation or bus contention in safety-critical systems using the MAX22344CAAP+.
What safety certifications apply to the MAX22344CAAP+?
The MAX22344CAAP+ is certified to VDE 0884-11 (reinforced isolation), UL 1577, and CSA Bulletin 5A. It achieves 3.75kVRMS withstand voltage for 60 seconds, 784VRMS maximum working voltage, and ±10kV surge immunity (1.2/50μs). These ratings are production-tested and documented in the official Maxim datasheet for MAX22344CAAP+.
What is the common-mode transient immunity (CMTI) specification for the MAX22344CAAP+?
The MAX22344CAAP+ has a typical common-mode transient immunity (CMTI) of 50kV/μs, tested with a 1000V transient applied between GNDA and GNDB. This high CMTI rating ensures reliable signal transmission in electrically noisy environments such as motor drives, inverters, and industrial power supplies - a key differentiator versus isolators rated below 30kV/μs.
MAX22344CAAP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- CAN, RS422, RS485, SPI
- Isolated Power:
- No
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 4/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 50kV/µs
- Data Rate:
- 200Mbps
- Propagation Delay tpLH / tpHL (Max):
- 9.2ns, 9.4ns
- 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:
- 20-SSOP
MAX22344CAAP+ FAQ
1.How can I place an order for MAX22344CAAP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22344CAAP+ 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 MAX22344CAAP+ reliable?
The price and inventory of MAX22344CAAP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22344CAAP+ is usually 5 days.
3.What payment methods are accepted for MAX22344CAAP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22344CAAP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22344CAAP+?
MAX22344CAAP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22344CAAP+ 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 MAX22344CAAP+?
For technical support, including MAX22344CAAP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22344CAAP+ requirements.
6.How does Aetrix verify that MAX22344CAAP+ is sourced from the original manufacturer or authorized distributors?
All MAX22344CAAP+ 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 MAX22344CAAP+ meets industry standards.
7.What is the process for return or replacement of MAX22344CAAP+?
All MAX22344CAAP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX22344CAAP+, 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 MAX22344CAAP+ part is unused and in its original packaging.
Return procedure for MAX22344CAAP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX22344CAAP+ Tags
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