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Analog Devices Inc./Maxim Integrated MAX22881CAAP+T
- Part No.:
- MAX22881CAAP+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
MAX22881CAAP+T.pdf
- Description:
- 4-CHANNEL, ULTRA-LOW POWER DIGIT
- Quantity:
- Payment:
- Shipping:
Inventory:1,072
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Product details
Overview
MAX22881CAAP+T from Analog Devices is a reinforced, ultra-low-power, 4-channel digital isolator in 20-pin SSOP package with 3750VRMS isolation rating (60s), ±10kV surge withstand, 200kV/µs CMTI, and 10Mbps max data rate. It features three unidirectional channels (A→B) and one reverse-direction channel (B→A), operating across 1.71V–5.5V supplies on both sides, and is designed for parasitically powered industrial I/O modules and battery management systems.
For engineers reviewing the MAX22881CAAP+T datasheet, MAX22881CAAP+T pinout, MAX22881CAAP+T application, or MAX22881CAAP+T equivalent, this page delivers verified electrical specs, directional channel mapping, isolation safety ratings, low-power consumption data at multiple data rates, and real-world use context for 4–20mA loop interfaces and compact micro-PLCs.
Technical Context
The MAX22881CAAP+T implements capacitive galvanic isolation using Analog Devices' proprietary process, enabling reinforced insulation with 784VRMS continuous working voltage (VIOWM) and 3.75kVRMS withstand voltage (VISO). Its channel configuration-three A→B and one B→A-is fixed and non-reconfigurable, supporting asymmetric signal routing across isolated domains.
It integrates undervoltage lockout (1.5V–1.69V threshold), active-high enable pins (ENA/ENB), and supports level translation between 1.71V and 5.5V logic domains. Propagation delay is 43.8ns (typ) at 3.3V, with <3ns pulse width distortion and 10ns channel-to-channel skew for same-direction signals.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating (VISO) | 3750VRMS for 60 seconds - certifies long-term reliability under sustained high-voltage stress in industrial environments |
| Continuous Working Voltage (VIOWM) | 784VRMS - defines maximum RMS voltage allowed across isolation barrier during normal operation |
| Surge Withstand | ±10kV (1.2µs/50µs waveform) - ensures survival during lightning-induced transients in field wiring |
| Common-Mode Transient Immunity | 200kV/µs (min) - prevents data corruption in noisy motor drive or power converter applications |
| Max Data Rate | 10Mbps - supports high-speed serial communication (e.g., SPI, UART) across isolation barrier |
| Supply Voltage Range | 1.71V to 5.5V per side - enables direct interfacing with 1.8V, 3.3V, and 5V logic without level shifters |
| Power @ 1Mbps / 3.3V | 77.04µW per channel - enables energy harvesting and battery-powered designs with multi-year runtime |
Pinout & Package
MAX22881CAAP+T uses a 20-pin SSOP (Shrink Small Outline Package) with 0.65mm pitch, 5.3mm creepage/clearance, and reinforced insulation barrier. Package outline number 21-0056; land pattern 90-0094.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 3 | VDDA | Side A supply input - requires local 0.1µF + 1nF bypassing within 2mm for stable low-noise operation |
| 2, 10 | GNDA | Side A ground reference - must be isolated from GNDB; forms return path for IN1–IN4 and ENA |
| 4, 18 | VDDB | Side B supply input - independent of VDDA; enables dual-supply level translation |
| 11, 19 | GNDB | Side B ground reference - galvanically isolated from GNDA; return for OUT1–OUT4 and ENB |
| 5, 16 | IN3 / IN4 | Side A inputs for channels 3 and 4 - routed to OUT3 and OUT4 on Side B (A→B direction) |
| 6, 7 | OUT3 / OUT4 | Side B outputs for channels 3 and 4 - driven by IN3 and IN4 on Side A (A→B direction) |
| 15 | IN3 (Side B) | Side B input for channel 3 - drives OUT3 on Side A (B→A direction; reverse channel) |
| 17 | OUT2 | Side B output for channel 2 - driven by IN2 on Side A (A→B direction) |
| 12 | ENA | Active-high enable for Side A logic - disables all Side A inputs when low; tie high if unused |
| 8, 9, 13 | ENB | Active-high enable for Side B logic - disables all Side B outputs when low; tie high if unused |
| 14 | OUT1 | Side B output for channel 1 - driven by IN1 on Side A (A→B direction) |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Galvanic Isolation | 3750VRMS withstand and 784VRMS working voltage meet IEC 60747-5-5 and pending VDE 0884-11 certification |
| Ultra-Low Power at DC | 13.0µA per channel at 3.3V supply - reduces thermal load and extends battery life in always-on sensor nodes |
| Asymmetric Channel Direction | Three A→B + one B→A channels - eliminates need for external cross-wiring in bidirectional interface designs |
| High CMTI Performance | 200kV/µs minimum - maintains signal integrity in high-dv/dt environments like motor drives and inverters |
| Wide Supply Flexibility | 1.71V–5.5V operation on both sides - supports mixed-voltage systems and brownout resilience |
Applications
| 4–20mA Loop Process Control | Compact Micro PLC |
|---|---|
Use Scenario: Isolating analog input/output circuitry in field-mounted transmitters and controllers connected to hazardous-area 4–20mA loops. IC Role / Device Role: Digital isolator for SPI or GPIO lines controlling DACs, ADCs, and HART modems across the loop barrier. Use Value: Enables safe, low-power, high-CMTI communication while meeting IEC 61000-4-5 surge immunity requirements for industrial field devices. |
Use Scenario: Signal isolation between CPU core (3.3V) and I/O expansion modules (5V or 24V) in space-constrained programmable logic controllers. IC Role / Device Role: Bidirectional digital isolator handling both control commands (A→B) and status feedback (B→A) across isolated domains. Use Value: Reduces PCB area vs. discrete isolators and eliminates external level-shifting components due to dual-supply support. |
| Battery Management Systems | Parasitically Powered Applications |
Use Scenario: Isolating cell monitoring ICs (e.g., AD7280A) from host MCU in high-voltage EV battery packs. IC Role / Device Role: Low-power isolator for transmitting voltage/temperature data and fault signals across 500V+ isolation barriers. Use Value: 77.04µW/channel power at 1Mbps allows direct integration into energy-harvested or ultra-low-quiescent monitoring subsystems. |
Use Scenario: Powering isolated sensors or actuators from loop energy (e.g., 4–20mA bus) without auxiliary supply rails. IC Role / Device Role: Ultra-low-IDD isolator enabling full-duplex digital communication while drawing <15µA per channel at DC. Use Value: Eliminates need for boost converters or charge pumps in self-powered field devices, simplifying BOM and improving MTBF. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 4-channel digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX22880CAAP+T | All four channels unidirectional (A→B); no reverse-direction capability | Suitable only for fully forward-data-path systems (e.g., isolated ADC readout) | Select when bidirectional signaling is unnecessary and lowest possible channel-to-channel skew is required |
| MAX22882CAAP+T | Two A→B + two B→A channels; symmetric bidirectional topology | Better matched for full-duplex protocols (e.g., isolated RS-485 transceivers) | Select when equal reverse/forward bandwidth and timing symmetry are critical for protocol compliance |
Compared with MAX22880CAAP+T and MAX22882CAAP+T, the MAX22881CAAP+T uniquely balances asymmetric data flow needs - ideal for systems where most signals travel A→B but one critical feedback path (e.g., fault flag) must go B→A - without over-provisioning reverse channels or sacrificing power efficiency.
Availability
MAX22881CAAP+T 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 certified reinforced isolation.
Supply support for MAX22881CAAP+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 industrial, automotive, communications, and healthcare markets.
The MAX2288x family is engineered for ultra-low-power, reinforced-isolation applications in harsh industrial environments - prioritizing energy efficiency, surge robustness, and regulatory compliance over raw speed or channel count.
FAQ
What is the isolation voltage rating of the MAX22881CAAP+T?
The MAX22881CAAP+T has a 3750VRMS isolation withstand voltage (VISO) rated for 60 seconds, a 784VRMS maximum continuous working voltage (VIOWM), and a ±10kV surge rating per IEC 61000-4-5. These values are validated for the 20-pin SSOP package and reflect its reinforced insulation classification per IEC 60747-5-5 and pending VDE 0884-11 certification.
How does the channel directionality work in the MAX22881CAAP+T?
The MAX22881CAAP+T has three unidirectional channels (IN1→OUT1, IN2→OUT2, IN3→OUT3) flowing from Side A to Side B, and one reverse-direction channel (IN3 on Side B → OUT3 on Side A). This fixed 3+1 asymmetry is implemented in silicon and cannot be reconfigured via pins or registers - it is inherent to the MAX22881CAAP+T variant.
What are the supply voltage requirements for MAX22881CAAP+T?
The MAX22881CAAP+T operates with independent supplies: VDDA and VDDB each accept 1.71V to 5.5V. Both supplies must be present for functional operation. Undervoltage lockout triggers at 1.5V–1.69V (rising), ensuring reliable startup and shutdown behavior across wide temperature ranges (-40°C to +125°C).
Does MAX22881CAAP+T support level translation between different logic voltages?
Yes - the MAX22881CAAP+T natively supports level translation because Side A (VDDA/GNDA) and Side B (VDDB/GNDB) operate independently. For example, it can translate 1.8V logic on Side A to 3.3V logic on Side B, or 5V to 2.5V, provided both supplies remain within 1.71V–5.5V and input thresholds (VIH/VIL) are met per the DC specifications table.
What is the typical power consumption of MAX22881CAAP+T at 1Mbps?
At 1Mbps and 3.3V supply, the MAX22881CAAP+T consumes 77.04µW per channel - derived from 23.2µA total supply current (IDDA + IDDB) divided across four channels. This ultra-low figure enables use in energy-constrained applications such as loop-powered sensors and battery-backed monitoring systems.
MAX22881CAAP+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 200kV/µs
- Data Rate:
- 10Mbps
- Propagation Delay tpLH / tpHL (Max):
- 45ns, 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:
- 20-SSOP
MAX22881CAAP+T FAQ
1.How can I place an order for MAX22881CAAP+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22881CAAP+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 MAX22881CAAP+T reliable?
The price and inventory of MAX22881CAAP+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22881CAAP+T is usually 5 days.
3.What payment methods are accepted for MAX22881CAAP+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22881CAAP+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22881CAAP+T?
MAX22881CAAP+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22881CAAP+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 MAX22881CAAP+T?
For technical support, including MAX22881CAAP+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22881CAAP+T requirements.
6.How does Aetrix verify that MAX22881CAAP+T is sourced from the original manufacturer or authorized distributors?
All MAX22881CAAP+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 MAX22881CAAP+T meets industry standards.
7.What is the process for return or replacement of MAX22881CAAP+T?
All MAX22881CAAP+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX22881CAAP+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 MAX22881CAAP+T part is unused and in its original packaging.
Return procedure for MAX22881CAAP+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX22881CAAP+T Tags
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