My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX22840FAWE+T
- Part No.:
- MAX22840FAWE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX22840FAWE+T.pdf
- Description:
- 4-CHANNEL, ULTRA-LOW POWER DIGIT
- Quantity:
- Payment:
- Shipping:
Inventory:1,307
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX22840FAWE+T from Analog Devices is a reinforced, ultra-low-power, 4-channel digital isolator in a 16-pin wide SOIC package with 5000VRMS isolation rating (60s), ±10kV surge capability, 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. It is used in compact micro PLCs and battery-powered industrial sensors where low power and high reliability are critical.
For engineers reviewing the MAX22840FAWE+T datasheet, MAX22840FAWE+T pinout, MAX22840FAWE+T application, or MAX22840FAWE+T equivalent, this page delivers verified specifications, channel directionality (all four channels unidirectional A→B), safety certifications (UL/VDE pending), thermal performance (θJA = 71°C/W), and real-world design context for 4–20mA loop interfaces and parasitically powered systems.
Technical Context
The MAX22840FAWE+T implements capacitive galvanic isolation using Analog Devices' proprietary process, enabling reinforced insulation with 5000VRMS withstand voltage and 848VRMS continuous working voltage (VIOWM). Its architecture supports independent 1.71V–5.5V supplies on both sides, allowing level translation between logic domains.
All four channels transmit data exclusively from Side A (IN1–IN4) to Side B (OUT1–OUT4); ENA and ENB provide active-high enable control per side. The device features undervoltage lockout (1.5–1.69V threshold), 43.8ns typical propagation delay at 3.3V, and 35ps RMS clock jitter - optimized for timing-critical industrial communication links.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 5000VRMS for 60s (VISO); enables compliance with reinforced insulation requirements in IEC 61010-1 and IEC 62368-1 |
| Surge Withstand | ±10kV (1.2µs/50µs waveform) between GNDA/GNDB; protects against lightning-induced transients in field-connected equipment |
| Common-Mode Transient Immunity | 200kV/µs minimum; ensures reliable operation in noisy motor drives and power converters |
| Max Data Rate | 10Mbps; supports high-speed serial protocols like SPI, RS-485, and CAN FD physical layer isolation |
| Supply Voltage Range | 1.71V to 5.5V per side; allows direct interfacing with 1.8V, 3.3V, and 5V logic without external level shifters |
| Quiescent Current | 9.6µA per channel at DC (3.3V); reduces system power by >50% vs. legacy isolators in always-on sensor nodes |
| Propagation Delay | 43.8ns typical (3.3V); minimizes latency in closed-loop control systems requiring sub-100ns timing budgets |
Pinout & Package
MAX22840FAWE+T is housed in a 16-pin wide SOIC package (W16MS+12A), 10.3mm × 7.5mm footprint, with 1.27mm pitch and creepage/clearance ≥8mm. Thermal resistance θJA = 71°C/W (4-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, VDDA | Side A power supply | Bypass with 1nF + 0.1µF ceramic caps within 2mm; powers IN1–IN4 and ENA logic |
| 2, 8, GNDA | Side A ground reference | Return path for Side A signals; must be isolated from GNDB by PCB layout |
| 3, IN1 | Logic input channel 1 (Side A) | Drives OUT1 on Side B; default-low output behavior when disabled |
| 4, IN2 | Logic input channel 2 (Side A) | Drives OUT2 on Side B; compatible with CMOS/TTL logic thresholds |
| 5, IN3 | Logic input channel 3 (Side A) | Drives OUT3 on Side B; tied high/low if unused to prevent floating inputs |
| 6, IN4 | Logic input channel 4 (Side A) | Drives OUT4 on Side B; supports 100ns minimum pulse width for robust edge detection |
| 7, ENB | Active-high enable for Side B | Disables all OUTx outputs when low; required for power-gating Side B in sleep modes |
| 9, 15, GNDB | Side B ground reference | Return path for Side B signals; forms isolation barrier with GNDA |
| 10, ENA | Active-high enable for Side A | Disables all INx inputs when low; enables side-specific power management |
| 11, OUT4 | Logic output channel 4 (Side B) | Driven by IN4; sinks/source up to ±4mA at 5V, ±2mA at 3.3V |
| 12, OUT3 | Logic output channel 3 (Side B) | Driven by IN3; exhibits <3ns pulse width distortion for accurate timing recovery |
| 13, OUT2 | Logic output channel 2 (Side B) | Driven by IN2; 5ns rise/fall time (3.3V) supports clean 10Mbps signal integrity |
| 14, OUT1 | Logic output channel 1 (Side B) | Driven by IN1; 10ns channel-to-channel skew (same direction) ensures synchronous multi-bit transfers |
| 16, VDDB | Side B power supply | Bypass with 1nF + 0.1µF ceramic caps within 2mm; powers OUT1–OUT4 and ENB logic |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low power consumption | 77.04µW per channel at 1Mbps/1.8V - enables 10+ year battery life in wireless sensor nodes |
| Reinforced galvanic isolation | 5000VRMS withstand and 848VRMS working voltage - meets IEC 61010-1 CAT III requirements for industrial measurement |
| High CMTI | 200kV/µs minimum - prevents data corruption in high-dv/dt environments like motor inverters and SMPS |
| Wide supply range | 1.71V–5.5V per side - eliminates need for external regulators when interfacing mixed-voltage subsystems |
| Low propagation delay skew | 10ns max channel-to-channel skew (same direction) - preserves timing alignment in parallel data buses |
| Integrated UVLO protection | 1.5–1.69V threshold with 30mV hysteresis - ensures predictable startup/shutdown behavior across temperature |
Applications
| 4–20mA Loop Process Control | Compact Micro PLC |
|---|---|
|
Use Scenario: Isolating analog input/output modules in hazardous-area transmitters where field-side 4–20mA signals must be safely digitized on the controller side. IC Role / Device Role / Timing Role: Digital isolator bridging analog front-end ADC/DAC and microcontroller, providing reinforced insulation and level translation between 24V field and 3.3V logic domains. Use Value: Enables certified Class I, Div 2 operation with 5000VRMS isolation and ±10kV surge immunity, eliminating external protection components. |
Use Scenario: Signal isolation in DIN-rail-mounted micro PLCs with space-constrained PCBs and stringent EMI requirements. IC Role / Device Role / Timing Role: Unidirectional isolator for I/O expansion bus (e.g., SPI or parallel GPIO), separating CPU domain from relay/sensor interface domain. Use Value: 9.6µA/channel quiescent current reduces total system standby power by >40%, extending uptime in battery-backed controllers. |
| 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 / Timing Role: Galvanic barrier for UART or SPI communication between isolated cell supervisor and main BMS controller. Use Value: 200kV/µs CMTI prevents false triggering during fast-switching events in traction inverters adjacent to battery stacks. |
Use Scenario: Power harvesting systems (e.g., energy-harvesting wireless sensors) where available power is <100µW per channel. IC Role / Device Role / Timing Role: Low-power isolator enabling communication between ultra-low-power MCU and isolated sensor interface. Use Value: 77.04µW/channel at 1Mbps allows full-duplex telemetry without compromising energy budget of RF or piezoelectric harvesters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISO6741QDWR | 4-channel, 5000VRMS reinforced isolator in SOIC-16; higher quiescent current (22µA/channel @ 3.3V DC) and lower CMTI (100kV/µs) | Targeted at general-purpose industrial I/O; lacks parasitic-power optimization for energy-harvesting use cases | Select ISO6741QDWR only if legacy TI ecosystem compatibility or lower cost is prioritized over ultra-low power and noise immunity |
| ADUM140D0BRIZ | 4-channel, 3750VRMS reinforced isolator in SOIC-16; 10Mbps data rate but higher propagation delay (60ns typ) and no integrated UVLO | Suitable for non-safety-critical automation; requires external UVLO circuitry for robust brownout handling | Choose ADUM140D0BRIZ when 3750VRMS isolation suffices and legacy ADuM140x footprint compatibility is required |
Compared with ISO6741QDWR and ADUM140D0BRIZ, MAX22840FAWE+T delivers the lowest power envelope (9.6µA/channel), highest noise immunity (200kV/µs CMTI), and most complete safety feature set (integrated UVLO, 5000VRMS rating), making it optimal for next-generation battery-powered and safety-certified industrial designs.
Availability
MAX22840FAWE+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-term lifecycle support, and traceable sourcing for industrial OEM programs.
Supply support for MAX22840FAWE+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 technologies, serving industrial, automotive, communications, and healthcare markets since 1965.
The MAX22840FAWE+T belongs to the MAX22xxx family of reinforced digital isolators, designed specifically for ultra-low-power, high-noise-immunity industrial connectivity in harsh environments - including factory automation, energy metering, and electric vehicle infrastructure.
FAQ
What is the maximum data rate supported by the MAX22840FAWE+T?
The MAX22840FAWE+T supports a maximum data rate of 10Mbps, validated across its full operating temperature range (−40°C to +125°C) and supply voltage range (1.71V to 5.5V). This enables reliable isolation of high-speed serial interfaces such as SPI clock lines and RS-485 control signals without introducing timing violations. The device maintains this rate with <10ns channel-to-channel skew, ensuring deterministic behavior in multi-bit synchronous protocols.
Does the MAX22840FAWE+T support bidirectional signal transfer?
No, the MAX22840FAWE+T is configured for unidirectional signal transfer only - all four channels (IN1–IN4 to OUT1–OUT4) operate strictly from Side A to Side B. For bidirectional isolation, designers must select MAX22841FAWE+T (three A→B + one B→A) or MAX22842FAWE+T (two A→B + two B→A). This fixed directionality simplifies timing analysis and reduces cross-talk risk in dedicated sensor-to-controller paths.
What safety certifications does the MAX22840FAWE+T hold?
The MAX22840FAWE+T has pending certifications for UL 1577 (file E351759), VDE 0884-11:2017-1 (reinforced insulation), CSA IEC 62368-1, and IEC 61010-1. Its 5000VRMS isolation rating, 848VRMS working voltage (VIOWM), and 8mm creepage/clearance meet requirements for reinforced insulation in industrial measurement equipment per IEC 61010-1 CAT III.
How does the MAX22840FAWE+T achieve ultra-low power consumption?
The MAX22840FAWE+T achieves 9.6µA per channel at DC (3.3V) through Analog Devices' proprietary capacitive isolation process and optimized internal oscillator architecture. Its dynamic current scales linearly with data rate - 13.2µA at 100kbps and 47.6µA at 1Mbps - enabling precise power budgeting in battery-operated systems. No external components are needed to reach these values; only standard 0.1µF + 1nF bypass capacitors are required.
What is the purpose of the ENA and ENB pins on the MAX22840FAWE+T?
ENA (pin 10) and ENB (pin 7) are active-high enable inputs that independently gate power to Side A and Side B logic circuits. When ENA is low, all INx inputs are disabled and INx pins become high-impedance; when ENB is low, all OUTx outputs enter high-impedance state. This allows dynamic power gating - for example, disabling Side B during MCU sleep while maintaining Side A readiness - reducing system-level standby current by up to 70%.
MAX22840FAWE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX22840FAWE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX22840FAWE+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 MAX22840FAWE+T reliable?
The price and inventory of MAX22840FAWE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX22840FAWE+T is usually 5 days.
3.What payment methods are accepted for MAX22840FAWE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX22840FAWE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX22840FAWE+T?
MAX22840FAWE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX22840FAWE+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 MAX22840FAWE+T?
For technical support, including MAX22840FAWE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX22840FAWE+T requirements.
6.How does Aetrix verify that MAX22840FAWE+T is sourced from the original manufacturer or authorized distributors?
All MAX22840FAWE+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 MAX22840FAWE+T meets industry standards.
7.What is the process for return or replacement of MAX22840FAWE+T?
All MAX22840FAWE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX22840FAWE+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 MAX22840FAWE+T part is unused and in its original packaging.
Return procedure for MAX22840FAWE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX22840FAWE+T 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…
