My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX22840FAWE+
- Part No.:
- MAX22840FAWE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX22840FAWE+.pdf
- Description:
- 4-CHANNEL, ULTRA-LOW POWER DIGIT
- Quantity:
- Payment:
- Shipping:
Inventory:3,447
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX22840FAWE+ from Analog Devices is a reinforced, ultra-low-power, 4-channel digital isolator in a 16-pin wide SOIC package with 5000VRMS isolation rating for 60 seconds, 848VRMS continuous working voltage, and 200kV/µs CMTI. It supports bidirectional signal transfer across galvanically isolated domains at up to 10Mbps, with 9.6µA/channel quiescent current at 3.3V and operation from −40°C to +125°C. Used in compact micro PLCs and battery management systems requiring high reliability under surge stress.
For engineers reviewing the MAX22840FAWE+ datasheet, MAX22840FAWE+ pinout, MAX22840FAWE+ application, or MAX22840FAWE+ equivalent, this page delivers verified technical context, real-world design meaning of key specs, validated pin functions, and two confirmed alternative parts with documented functional and application differences - all aligned to the exact MAX22840FAWE+ variant and its 16 wide SOIC packaging.
Technical Context
The MAX22840FAWE+ implements capacitive-based galvanic isolation with reinforced insulation architecture, enabling safe signal transfer between circuits operating at different ground potentials. Its four channels are unidirectional (A→B), with independent 1.71V–5.5V supplies on each side supporting level translation functionality.
It features active-high enable pins (ENA/ENB) per side, undervoltage lockout (1.5V–1.69V threshold), and robust ESD protection (±6kV contact per IEC 61000-4-2). Propagation delay is 42.8ns (typ) at 3.3V, with channel-to-channel skew ≤10ns for same-direction signals and ≤30ns for opposite-direction configurations - though MAX22840FAWE+ uses only A→B directionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Voltage (VISO) | 5000VRMS for 60s - meets reinforced insulation requirements for industrial safety-critical interfaces. |
| Continuous Working Voltage (VIOWM) | 848VRMS - enables long-term operation in high-voltage AC/DC power monitoring applications. |
| Common-Mode Transient Immunity | 200kV/µs (min) - ensures reliable data integrity in noisy motor drives and inverters. |
| Max Data Rate | 10Mbps - supports fast serial communication (e.g., SPI, UART) across isolation barrier without timing bottlenecks. |
| Supply Current (DC, 3.3V) | 9.6µA per channel - reduces system power by >50% vs legacy isolators, critical for parasitically powered sensors. |
| Propagation Delay | 42.8ns (typ) at 3.3V - minimizes latency in closed-loop control feedback paths. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive and industrial edge nodes. |
Pinout & Package
Package: 16-pin wide SOIC (W16MS+12A), 10.3mm × 7.5mm body, 1.27mm pitch, creepage/clearance ≥8mm, reinforced insulation barrier.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, VDDA | Side A power supply | Bypass with 1nF + 0.1µF ceramic caps within 2mm; supports 1.71V–5.5V logic-side rail. |
| 2, 8, GNDA | Side A ground reference | Must be isolated from GNDB; forms local return for IN1–IN4 and ENA. |
| 16, VDDB | Side B power supply | Bypass identically to VDDA; powers OUT1–OUT4 and ENB; enables level-shifting between domains. |
| 9, 15, GNDB | Side B ground reference | Galvanically separated from GNDA; required for high-side sensing and isolated ADC interfaces. |
| 3–6, IN1–IN4 | Logic inputs (Side A) | Accept CMOS/TTL levels; drive corresponding OUT1–OUT4 on Side B; default-low output behavior. |
| 14, 13, 12, 11, OUT1–OUT4 | Logic outputs (Side B) | Drive 4mA sink / 2mA source at 3.3V; support direct connection to MCU GPIO or ADC reference buffers. |
| 10, ENA | Active-high enable (Side A) | Disables all IN→OUT transfers when low; tie high if always enabled; reduces dynamic power during idle. |
| 7, ENB | Active-high enable (Side B) | Disables all OUT drivers when low; allows tri-state output behavior for bus sharing or hot-swap isolation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 9.6µA/channel at DC (3.3V) - extends battery life in portable diagnostics and wireless sensor nodes. |
| Reinforced galvanic isolation | 5000VRMS/60s withstand + 848VRMS continuous - satisfies IEC 61010-1 and IEC 62368-1 reinforced insulation requirements. |
| High CMTI immunity | 200kV/µs minimum - prevents data corruption in high-dv/dt environments like motor gate drivers and SMPS feedback loops. |
| Wide supply range | 1.71V–5.5V on both sides - enables interoperability between 1.8V microcontrollers and 5V analog front-ends without external level shifters. |
| Low propagation delay skew | ≤10ns channel-to-channel (same direction) - preserves timing alignment in multi-signal isolation (e.g., encoder A/B/Z lines). |
Applications
| 4-20mA Loop Process Control | Compact Micro PLC |
|---|---|
Use Scenario: Isolating analog input/output modules in hazardous-area field transmitters where loop-powered sensors feed 4–20mA signals into isolated ADCs and DACs. IC Role / Device Role / Timing Role: Digital isolator bridging microcontroller (Side A) and isolated analog interface (Side B), transmitting configuration, calibration, and status bits across barrier. Use Value: Enables safe, low-power communication over 5000VRMS barrier while consuming <10µA/channel - reducing thermal load in sealed enclosures. | Use Scenario: Signal isolation between CPU module and I/O expansion cards in DIN-rail mounted programmable logic controllers with space-constrained PCB layouts. IC Role / Device Role / Timing Role: Unidirectional data isolator carrying digital I/O state updates (e.g., DI status, DO commands) between controller and peripheral boards. Use Value: Delivers 10Mbps throughput and ≤43ns propagation delay to maintain deterministic scan cycle timing in sub-1ms control loops. |
| Battery Management Systems | Parasitically Powered Applications |
Use Scenario: Isolating cell voltage monitoring ICs (e.g., AD7280A) from host MCU in high-voltage EV battery packs where ground potential differs by >1000V between modules. IC Role / Device Role / Timing Role: High-CMTI isolator transferring sampled cell voltages and fault flags across isolation barrier during active balancing cycles. Use Value: Withstands ±10kV surge (1.2µs/50µs) and maintains 200kV/µs CMTI - ensuring data integrity during high-current switching events. | Use Scenario: Powering and isolating sensor nodes from energy-harvested sources (e.g., piezoelectric or thermoelectric generators) delivering <100µW average power. IC Role / Device Role / Timing Role: Ultra-low-quiescent isolator enabling full-duplex digital communication while drawing only 77.04µW/channel at 1Mbps (1.8V). Use Value: Reduces total isolation power budget by >60% vs standard isolators - making it viable for zero-battery, maintenance-free deployments. |
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 |
|---|---|---|---|
| ISO6741FDWR | 4-channel, 5000VRMS reinforced isolator in 16-SOIC; higher supply current (22µA/ch @ 3.3V DC); 50Mbps max data rate. | Higher speed suits high-throughput industrial Ethernet PHY interfaces; less suitable for ultra-low-power battery systems. | Select ISO6741FDWR when bandwidth >10Mbps is required and power budget allows ~2.3× higher quiescent draw. |
| ADUM2401ARWZ | 4-channel, 5000VRMS reinforced isolator in 16-SOIC; magnetic coupling; 1.2mA/ch supply current at 3.3V; 25Mbps max data rate. | Higher EMI susceptibility than capacitive isolators; not recommended for high-CMTI motor control feedback paths. | Choose ADUM2401ARWZ only when legacy magnetic-isolator design reuse is prioritized over power efficiency and noise immunity. |
Compared with ISO6741FDWR and ADUM2401ARWZ, the MAX22840FAWE+ offers the lowest power consumption (9.6µA/ch) and highest CMTI (200kV/µs), making it uniquely suited for energy-constrained, noise-intensive applications like battery monitoring and loop-powered transmitters - where alternatives trade off either efficiency or robustness.
Availability
MAX22840FAWE+ 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-term lifecycle support, and compliance with reinforced isolation standards.
Supply support for MAX22840FAWE+ 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 MAX22840FAWE+ belongs to the MAX22xxx family of reinforced digital isolators designed specifically for ultra-low-power, high-CMTI, and wide-supply industrial and battery-operated applications - emphasizing safety, efficiency, and signal integrity in harsh environments.
FAQ
What is the maximum data rate supported by the MAX22840FAWE+?
The MAX22840FAWE+ supports a maximum data rate of 10Mbps, verified across its full operating temperature range (−40°C to +125°C) and supply voltage range (1.71V–5.5V). This rate is achievable with typical propagation delay of 42.8ns and pulse width distortion under 3ns, making the MAX22840FAWE+ suitable for high-speed SPI, UART, and digital I/O isolation in industrial control systems.
Does the MAX22840FAWE+ support bidirectional signal transfer?
No, the MAX22840FAWE+ is configured for unidirectional signal transfer only - all four channels transmit from Side A (IN1–IN4) to Side B (OUT1–OUT4). For bidirectional variants, consider the MAX22841FAWE+ (3:1 direction) or MAX22842FAWE+ (2:2 direction), which share the same 16 wide SOIC package and isolation ratings as the MAX22840FAWE+.
What safety certifications does the MAX22840FAWE+ hold?
The MAX22840FAWE+ has pending certifications for UL 1577 (file E351759), VDE 0884-11:2017-1 (reinforced insulation), and CSA/IEC 62368-1 and 61010-1. Its 5000VRMS/60s isolation voltage and 848VRMS continuous working voltage meet reinforced insulation requirements for industrial equipment and test & measurement devices per these standards.
How does the enable functionality work on the MAX22840FAWE+?
The MAX22840FAWE+ features two independent active-high enable pins: ENA (pin 10) controls input sampling on Side A, and ENB (pin 7) controls output drivers on Side B. When ENA is low, IN1–IN4 are ignored and no data propagates; when ENB is low, OUT1–OUT4 enter high-impedance state - enabling shared-bus architectures and power-gating strategies without redesigning the MAX22840FAWE+ layout.
What is the typical supply current of the MAX22840FAWE+ at 1.8V operation?
At 1.8V supply and DC conditions, the MAX22840FAWE+ draws 6.5µA (typ) on Side A and 31.4µA (typ) on Side B, totaling 37.9µA for all four channels. This ultra-low current enables operation in energy-harvested or coin-cell-powered systems where average power must remain below 100µW - a key advantage over competing isolators that draw >1mA at similar voltages.
MAX22840FAWE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- RS232, RS422, RS485, SPI
- Isolated Power:
- Yes
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 4/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 5000Vrms
- 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 (Max)
- Voltage - Supply:
- 1.71V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX22840FAWE+ FAQ
1.How can I place an order for MAX22840FAWE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22840FAWE+ 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 MAX22840FAWE+ reliable?
The price and inventory of MAX22840FAWE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22840FAWE+ is usually 5 days.
3.What payment methods are accepted for MAX22840FAWE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22840FAWE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22840FAWE+?
MAX22840FAWE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22840FAWE+ 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 MAX22840FAWE+?
For technical support, including MAX22840FAWE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22840FAWE+ requirements.
6.How does Aetrix verify that MAX22840FAWE+ is sourced from the original manufacturer or authorized distributors?
All MAX22840FAWE+ 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 MAX22840FAWE+ meets industry standards.
7.What is the process for return or replacement of MAX22840FAWE+?
All MAX22840FAWE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX22840FAWE+, 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 MAX22840FAWE+ part is unused and in its original packaging.
Return procedure for MAX22840FAWE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX22840FAWE+ 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
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
