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Analog Devices Inc./Maxim Integrated MAX22441CAEE+
- Part No.:
- MAX22441CAEE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX22441CAEE+.pdf
- Description:
- 4-CHANNEL, ULTRA-LOW POWER DIGIT
- Quantity:
- Payment:
- Shipping:
Inventory:1,533
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Product details
Overview
MAX22441CAEE+ from Analog Devices is a reinforced, ultra-low-power, 4-channel digital isolator in 16-pin QSOP package (E16MS+1F), providing 3000VRMS isolation for 60s and ±10kV surge immunity. It features bidirectional channel configuration (3 channels A→B, 1 channel B→A), 10Mbps max data rate, 43.8ns typical propagation delay at 3.3V, and 9.6µA/channel quiescent current - enabling use in compact micro PLCs and battery-powered industrial sensors.
For engineers reviewing the MAX22441CAEE+ datasheet, MAX22441CAEE+ pinout, MAX22441CAEE+ application, or MAX22441CAEE+ equivalent, key selection criteria include its reinforced galvanic isolation rating (VIOWM = 445VRMS), CMTI ≥200kV/µs, dual-supply operation (1.71V–5.5V per side), and channel directionality - critical for isolated analog front-end interfaces and loop-powered I/O modules.
Technical Context
The MAX22441CAEE+ implements capacitive-based galvanic isolation with proprietary silicon-dioxide dielectric barrier, supporting independent 1.71V–5.5V supplies on each side for level translation. Its architecture includes integrated refresh circuitry (10kHz) to maintain DC correctness and undervoltage lockout (1.6V threshold) with 30mV hysteresis for robust power sequencing.
It delivers asymmetric channel directionality: IN1–IN2 and OUT1–OUT2 are A→B; IN3 is A→B while OUT3 is B→A; IN4 is A→B while OUT4 is B→A - enabling isolated bidirectional communication paths without external logic. All outputs default high upon power-up when enable pins are asserted.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage (VISO) | 3000VRMS for 60s - meets reinforced insulation requirements for industrial safety standards (IEC 62368-1, IEC 61010-1). |
| Working Voltage (VIOWM) | 445VRMS continuous - supports long-term operation in 4–20mA loop interfaces up to Class I, Division 2 environments. |
| Max Data Rate | 10Mbps - enables real-time digital feedback in motor control gate drivers and isolated ADC/DAC interfaces. |
| Propagation Delay | 43.8ns (typ) at 3.3V - ensures sub-50ns latency for time-critical isolated SPI clock/data paths. |
| Supply Current | 9.6µA/channel at DC (3.3V) - reduces system power by >70% vs. legacy isolators, enabling parasitic powering from 4–20mA loops. |
| CMTI | ≥200kV/µs - prevents false triggering in high-noise motor drives and inverters with fast-switching SiC/GaN FETs. |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive and industrial edge controller deployments. |
Pinout & Package
Package: 16-pin QSOP (E16MS+1F), 3.9mm × 9.9mm body, 1.5mm height, 0.635mm pitch. Thermal resistance θJA = 103.7°C/W (4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VDDA | Side A Power Supply | Bypass with 0.1µF + 1nF ceramic caps within 2mm; supports 1.71–5.5V for logic-side interface. |
| 2,8 GNDA | Side A Ground Reference | Return path for Side A signals; must be separated from GNDB by isolation barrier. |
| 3 IN1 | Logic Input A→B Channel 1 | Drives OUT1 on Side B; TTL/CMOS compatible with 0.7×VDDA VIH threshold. |
| 4 IN2 | Logic Input A→B Channel 2 | Drives OUT2 on Side B; identical electrical specs to IN1. |
| 5 IN3 | Logic Input A→B Channel 3 | Drives OUT3 on Side B; configured as A→B in MAX22441 (unlike MAX22440/MAX22442 variants). |
| 6 IN4 | Logic Input A→B Channel 4 | Drives OUT4 on Side B; completes 3-A→B / 1-B→A channel mapping. |
| 10 ENA | Active-High Enable (Side A) | Enables IN1–IN4 receivers; tie high if unused; no effect on B→A channels. |
| 11 OUT3 | Logic Output B→A Channel 3 | Driven by IN3 on Side B - unique reverse-direction path for handshake or status reporting. |
| 12 OUT4 | Logic Output B→A Channel 4 | Driven by IN4 on Side B - provides second reverse channel for full-duplex isolated control. |
| 13 OUT2 | Logic Output A→B Channel 2 | Receives IN2; CMOS output capable of 4mA sink/2mA source at 3.3V. |
| 14 OUT1 | Logic Output A→B Channel 1 | Receives IN1; matches OUT2/OUT3/OUT4 drive strength and timing specs. |
| 15 GNDB | Side B Ground Reference | Return path for Side B signals; galvanically isolated from GNDA. |
| 16 VDDB | Side B Power Supply | Bypass with 0.1µF + 1nF ceramic caps within 2mm; independent voltage domain from VDDA. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low-Power Operation | 9.6µA/channel at DC (3.3V) enables energy harvesting and battery life extension in wireless sensor nodes. |
| Reinforced Isolation | 3000VRMS/60s and ±10kV surge withstand allows direct interface with mains-referenced field devices. |
| High CMTI | ≥200kV/µs immunity prevents data corruption in noisy motor drive and solar inverter applications. |
| Asymmetric Channel Mapping | 3 A→B + 1 B→A channels support isolated command-and-status protocols without external transceivers. |
| Wide Supply Range | 1.71V–5.5V per side enables interoperability between 1.8V microcontrollers and 5V analog subsystems. |
Applications
| 4–20mA Loop Process Control | Compact Micro PLC |
|---|---|
Use Scenario: Isolating analog input/output circuits in hazardous-area transmitters and valve positioners powered from 4–20mA loops. IC Role / Device Role / Timing Role: Digital isolator bridging microcontroller UART/SPI and isolated ADC/DAC, with <50ns propagation delay preserving loop timing integrity. Use Value: Enables parasitic powering from loop current while maintaining SIL-2 functional safety via reinforced insulation and 200kV/µs CMTI. | Use Scenario: Signal isolation between CPU module and I/O expansion cards in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Bidirectional isolator for isolated RS-485/UART and GPIO lines, with ENA/ENB enabling power-gated I/O banks. Use Value: Reduces system power by 77µW/channel at 1Mbps, allowing fanless operation in sealed enclosures. |
| Battery Management Systems | Industrial Sensor Nodes |
Use Scenario: Isolating cell monitoring ICs (e.g., AD7280A) from host MCU in high-voltage EV battery packs. IC Role / Device Role / Timing Role: High-CMTI isolator for SPI clock/data between MCU and isolated analog front-end, rejecting common-mode noise from switching converters. Use Value: 10Mbps capability supports real-time cell voltage sampling at 1ksps across 96-cell stacks without bottlenecking. | Use Scenario: Low-power wireless sensor nodes deployed in remote industrial sites with intermittent solar charging. IC Role / Device Role / Timing Role: Ultra-low-quiescent isolator for isolated UART debug interface and sensor data transmission. Use Value: 9.6µA/channel DC consumption extends battery life to >10 years in sleep mode, meeting LPWAN node requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADUM2401ARWZ | 2500VRMS isolation (vs. 3000VRMS), 25kV/µs CMTI (vs. ≥200kV/µs), 1.7–5.5V supply, 4-channel unidirectional (A→B only). | Lacks reverse-direction channel; lower surge rating limits use in Class I Div 2 zones. | Select MAX22441CAEE+ when bidirectional signaling, higher surge immunity, or reinforced working voltage (445VRMS) is required. |
| SI8641ED-B-IS | 5000VRMS isolation (SOIC-16), 35kV/µs CMTI, 1.7–5.5V supply, 4-channel unidirectional, 150µA/channel at 1Mbps (vs. 47.6µA). | Higher power consumption and larger SOIC package; no B→A channel. | Choose MAX22441CAEE+ for QSOP footprint, ultra-low power, and asymmetric channel mapping in space-constrained designs. |
Compared with ADUM2401ARWZ and SI8641ED-B-IS, the MAX22441CAEE+ uniquely combines QSOP packaging, 3000VRMS reinforced isolation, 200kV/µs CMTI, and 3-A→B + 1-B→A channel topology - making it optimal for isolated bidirectional control in compact, low-power industrial systems.
Availability
MAX22441CAEE+ is available at Aetrix Electronics and suitable for 4–20mA loop process control, compact micro PLCs, and battery management systems requiring stable component supply, long-lifecycle assurance, and traceable sourcing.
Supply support for MAX22441CAEE+ 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 industrial, automotive, communications, and healthcare markets.
The MAX22441CAEE+ belongs to the MAX224xx family of reinforced digital isolators, designed specifically for ultra-low-power, high-CMTI isolation in space- and energy-constrained industrial automation and process control systems.
FAQ
What is the maximum data rate supported by the MAX22441CAEE+?
The MAX22441CAEE+ supports a maximum data rate of 10Mbps, verified across the full operating temperature range (–40°C to +125°C) and supply voltage range (1.71V–5.5V per side). This enables high-speed isolated communication for SPI, UART, and digital I/O in real-time industrial control applications without timing bottlenecks.
Does the MAX22441CAEE+ support bidirectional signal isolation?
Yes, the MAX22441CAEE+ implements an asymmetric 3-A→B + 1-B→A channel configuration: IN1–IN4 drive OUT1–OUT4 on Side B (A→B), while OUT3 and OUT4 on Side A receive inputs from Side B (B→A). This eliminates the need for external direction-control logic in full-duplex isolated interfaces.
What isolation ratings apply to the MAX22441CAEE+?
The MAX22441CAEE+ is rated for 3000VRMS isolation voltage (60s), 445VRMS maximum working voltage (VIOWM), and ±10kV surge (1.2/50µs waveform). It meets pending VDE 0884-11 reinforced insulation certification and UL1577, making it suitable for industrial safety-critical applications.
How does the power consumption of the MAX22441CAEE+ compare at different data rates?
At 3.3V supply, the MAX22441CAEE+ draws 9.6µA/channel at DC, 13.2µA/channel at 100kbps, and 47.6µA/channel at 1Mbps - demonstrating near-linear scaling with data activity. This ultra-low quiescent current enables operation in energy-harvesting and battery-powered systems where standby power dominates lifetime energy budget.
What is the function of the ENA and ENB pins on the MAX22441CAEE+?
ENA (Pin 10) is an active-high enable for Side A input receivers (IN1–IN4); ENB (Pin 11) enables Side B input receivers (IN3/IN4 on Side B). When asserted, they activate respective input stages; when deasserted, inputs enter high-impedance state. Both pins default to enabled if tied high, and have no effect on output drivers.
MAX22441CAEE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- SPI
- Isolated Power:
- Yes
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 3/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3000Vrms
- Common Mode Transient Immunity (Min):
- 200kV/µs
- Data Rate:
- 10Mbps
- Propagation Delay tpLH / tpHL (Max):
- 67.9ns, 67.8ns
- Pulse Width Distortion (Max):
- 3ns
- Rise / Fall Time (Typ):
- 5ns, 5ns
- Voltage - Supply:
- 1.71V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QSOP
MAX22441CAEE+ FAQ
1.How can I place an order for MAX22441CAEE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22441CAEE+ 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 MAX22441CAEE+ reliable?
The price and inventory of MAX22441CAEE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22441CAEE+ is usually 5 days.
3.What payment methods are accepted for MAX22441CAEE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22441CAEE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22441CAEE+?
MAX22441CAEE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22441CAEE+ 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 MAX22441CAEE+?
For technical support, including MAX22441CAEE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22441CAEE+ requirements.
6.How does Aetrix verify that MAX22441CAEE+ is sourced from the original manufacturer or authorized distributors?
All MAX22441CAEE+ 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 MAX22441CAEE+ meets industry standards.
7.What is the process for return or replacement of MAX22441CAEE+?
All MAX22441CAEE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX22441CAEE+, 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 MAX22441CAEE+ part is unused and in its original packaging.
Return procedure for MAX22441CAEE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX22441CAEE+ Tags
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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
Texas Instruments
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ISO7721FDR
Texas Instruments
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SI8710CC-B-ISR
Skyworks Solutions Inc.
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ISO6741FQDWRQ1
Texas Instruments
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ISO7721DWVR
Texas Instruments
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ISO7762FDBQR
Texas Instruments
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ISO7741DWR
Texas Instruments
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ISO7741FDWR
Texas Instruments
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