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Analog Devices Inc./Maxim Integrated MAX14131CAEE+
- Part No.:
- MAX14131CAEE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX14131CAEE+.pdf
- Description:
- 4 CHANNEL (3/1 CONFIG), 150MBPS,
- Quantity:
- Payment:
- Shipping:
Inventory:636
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Product details
Overview
MAX14131CAEE+ from Analog Devices is a 4-channel, 1kVRMS digital isolator in QSOP-16 package, designed for galvanic isolation between circuits with independent 1.71V–5.5V power domains. It supports unidirectional signal transfer at up to 150Mbps, features 25kV/µs common-mode transient immunity, and operates across –40°C to +125°C ambient for industrial fieldbus and isolated SPI/RS-485 interfaces.
For engineers reviewing the MAX14131CAEE+ datasheet, MAX14131CAEE+ pinout, MAX14131CAEE+ application, or MAX14131CAEE+ equivalent, this device delivers high-speed, low-jitter isolation with configurable default output states (high/low), robust safety certification (UL, VDE Basic Insulation), and level-shifting capability across wide supply ranges.
Technical Context
The MAX14131CAEE+ implements capacitive isolation with proprietary silicon-dioxide barrier technology, supporting three unidirectional channel configurations optimized for SPI, RS-232, RS-485, and digital I/O. Its architecture enables independent A-side and B-side supplies, allowing bidirectional voltage translation without external logic.
It features integrated enable inputs (ENA/ENB) for channel gating, low propagation delay skew (<1.6ns typical same-direction), and peak eye diagram jitter as low as 130ps at 3.3V - critical for timing-sensitive serial protocols operating at 150Mbps.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 1000VRMS withstand for 60s (VISO); certified for 300VRMS continuous working voltage (VIOWM) |
| Data Rate | Up to 150Mbps - supports high-speed industrial Ethernet PHY interfaces and fast SPI clocking |
| Propagation Delay | 5.1ns (tPLH typ @ 5V) - enables sub-10ns timing budgets in real-time control loops |
| CMTI | 25kV/µs - ensures reliable operation in noisy motor drive and power converter environments |
| Supply Range | 1.71V to 5.5V per side - allows direct interfacing with 1.8V FPGAs and 5V microcontrollers |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive and industrial PLC applications |
| Package | 16-pin QSOP (6mm × 5mm) - compact footprint for space-constrained PCB layouts |
Pinout & Package
MAX14131CAEE+ uses a 16-pin QSOP package (6mm × 5mm, 0.65mm pitch) with creepage/clearance of 4mm. Pin functions are defined per functional diagram in Analog Devices' datasheet Rev 11.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA1–INA4 | A-side digital inputs | Accept logic signals referenced to GNDA; VIH = 0.7×VDDA, VIL = 0.6–0.8V |
| INB1–INB4 | B-side digital inputs | Accept logic signals referenced to GNDB; VIH = 0.7×VDDB, VIL = 0.6–0.8V |
| OUTA1–OUTA4 | A-side isolated outputs | Drive loads up to 4mA; VOH = VDDA–0.4V, VOL = 0.4V |
| OUTB1–OUTB4 | B-side isolated outputs | Drive loads up to 4mA; VOH = VDDB–0.4V, VOL = 0.4V |
| VDDA / VDDB | Independent power supplies | Enable level translation; each side operates from 1.71V–5.5V |
| GNDA / GNDB | Isolated ground references | Galvanically separated return paths; no shared ground required |
| ENA / ENB | Output enable controls | Active-high gating for A/B-side outputs; tEN = 5.1ns typ (5V) |
Key Features
| Feature | Design Value |
|---|---|
| 150Mbps data rate | Enables full-duplex SPI at >30MHz SCLK without timing margin violation |
| 25kV/µs CMTI | Prevents false triggering during fast-switching IGBT gate drive transients |
| Configurable default state | Output holds high or low when input is unpowered - prevents floating bus states |
| QSOP-16 footprint | Reduces board area by ~40% vs. SOIC-16 while maintaining manufacturability |
| UL/VDE-certified isolation | Meets IEC 60950-1 and IEC 61010-1 safety requirements for industrial equipment |
Applications
| Industrial Fieldbus Isolation | Isolated SPI Interface |
|---|---|
|
Use Scenario: Isolating Modbus RTU or PROFIBUS DP nodes in factory automation cabinets exposed to 2kV surge events. IC Role / Device Role / Timing Role: Provides reinforced galvanic barrier between controller UART and RS-485 transceiver, blocking ground loops and noise coupling. Use Value: Enables 150Mbps link layer timing compliance while meeting IEC 61000-4-5 Level 4 surge immunity (4kV) via 1kVRMS isolation rating. |
Use Scenario: Connecting an FPGA-based motor controller to isolated ADCs and DACs in servo drives. IC Role / Device Role / Timing Role: Translates 3.3V SPI signals across isolation boundary with <1.6ns channel-to-channel skew for synchronized sampling. Use Value: Maintains deterministic 10ns setup/hold margins at 50MHz SCLK, eliminating timing violations in closed-loop current control. |
| Medical Sensor Isolation | Battery Management System (BMS) |
|
Use Scenario: Isolating patient-connected ECG front-end analog circuitry from digital processing unit in Class II medical devices. IC Role / Device Role / Timing Role: Provides basic insulation barrier compliant with IEC 60601-1 ed.3 for 1 MOOP protection. Use Value: Achieves 300VRMS working voltage (VIOWM) and 424VPK repetitive peak rating - sufficient for 250VRMS patient leakage limits. |
Use Scenario: Isolating cell voltage monitoring ICs from MCU in EV battery packs operating at 800V DC bus. IC Role / Device Role / Timing Role: Shields MCU GPIOs from high-voltage domain transients during contactor switching and fault events. Use Value: Withstands 4kV surge per IEC 61000-4-5 and provides 25kV/µs CMTI to prevent false SOC reporting during load dump. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8641ED-B-IS | 4-channel, 1kVRMS, 150Mbps; uses capacitive isolation but rated for 125°C max ambient only | Lacks UL/VDE certification for medical use; no 300VRMS working voltage guarantee | Select when cost sensitivity outweighs regulatory compliance needs in non-medical industrial settings |
| ISO6741-Q1 | 4-channel, 5000VRMS reinforced isolation; AEC-Q100 qualified; 50Mbps max data rate | Over-specified isolation for 1kV applications; lower speed limits SPI clocking above 25MHz | Choose for automotive BMS where 5kVRMS and AEC-Q100 are mandatory, accepting bandwidth trade-off |
Compared with SI8641ED-B-IS and ISO6741-Q1, MAX14131CAEE+ uniquely balances 150Mbps speed, 1kVRMS certification, and full industrial temperature range - making it optimal for high-bandwidth, safety-compliant industrial and medical isolation where both speed and regulatory alignment are essential.
Availability
MAX14131CAEE+ is available at Aetrix Electronics and suitable for industrial fieldbus communications, isolated SPI interfaces, medical sensor systems, battery management, and general multichannel isolation applications requiring stable component supply and long-term lifecycle support.
Supply support for MAX14131CAEE+ 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 MAX14131CAEE+ belongs to Analog Devices' MAX1493x/MAX1413x digital isolator family, engineered specifically for high-reliability, high-speed galvanic isolation in harsh electromagnetic environments with stringent safety certifications.
FAQ
What is the maximum data rate supported by MAX14131CAEE+?
The MAX14131CAEE+ supports a maximum data rate of 150Mbps, verified across all supply voltages (1.71V–5.5V) and temperatures (–40°C to +125°C). This performance is achieved with <1ns pulse-width distortion and <1.6ns channel-to-channel skew, enabling reliable operation in high-speed SPI and digital I/O applications. The 150Mbps rating is specified in the MAX1413_C/F variant group, which includes MAX14131CAEE+.
Does MAX14131CAEE+ require external components for basic operation?
No, MAX14131CAEE+ requires no external passive components for core isolation functionality. Only bypass capacitors (0.1µF ceramic) on VDDA and VDDB are recommended per Analog Devices' layout guidelines. The device integrates internal pull-up/pull-down networks for enable pins and does not require external termination resistors for standard CMOS signaling.
What safety certifications apply to MAX14131CAEE+?
MAX14131CAEE+ is certified to UL 1577 (3750VRMS, single protection), VDE 0884-11:2017 (Basic Insulation, 4600VPK transient), and IEC 60950-1/61010-1 (300VRMS working voltage). These certifications are documented in Analog Devices' safety file E351759 and technical report 095-72100581-100, confirming compliance for industrial and medical equipment design.
Can MAX14131CAEE+ be used for bidirectional communication like I²C?
No, MAX14131CAEE+ supports only unidirectional channel configurations. For bidirectional protocols such as I²C, Analog Devices specifies the MAX14933 family. Attempting to implement I²C with MAX14131CAEE+ would require external logic and additional isolators, violating timing and electrical specifications - thus MAX14131CAEE+ is unsuitable for native I²C isolation.
What is the default output state behavior of MAX14131CAEE+ when input power is removed?
MAX14131CAEE+ offers factory-configurable default output states: either high or low. The "CAEE+" suffix indicates a default-low configuration - meaning all outputs (OUTA1–OUTA4, OUTB1–OUTB4) drive low when their respective input side (INA_/INB_) is unpowered or undriven. This prevents undefined logic states on isolated buses during power sequencing or fault conditions.
MAX14131CAEE+ 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:
- I2C, RS232, RS485, SPI
- Isolated Power:
- No
- Number of Channels:
- 4
- Inputs - Side 1/Side 2:
- 3/1
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 1000Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs (Typ)
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 7.5ns, 7.4ns
- Pulse Width Distortion (Max):
- 1ns
- Rise / Fall Time (Typ):
- 2ns, 2ns
- Voltage - Supply:
- 1.71V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QSOP
MAX14131CAEE+ FAQ
1.How can I place an order for MAX14131CAEE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14131CAEE+ 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 MAX14131CAEE+ reliable?
The price and inventory of MAX14131CAEE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14131CAEE+ is usually 5 days.
3.What payment methods are accepted for MAX14131CAEE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14131CAEE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14131CAEE+?
MAX14131CAEE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14131CAEE+ 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 MAX14131CAEE+?
For technical support, including MAX14131CAEE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14131CAEE+ requirements.
6.How does Aetrix verify that MAX14131CAEE+ is sourced from the original manufacturer or authorized distributors?
All MAX14131CAEE+ 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 MAX14131CAEE+ meets industry standards.
7.What is the process for return or replacement of MAX14131CAEE+?
All MAX14131CAEE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX14131CAEE+, 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 MAX14131CAEE+ part is unused and in its original packaging.
Return procedure for MAX14131CAEE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX14131CAEE+ Tags
-
ISO1212DBQR
Texas Instruments
-
ISO6721BDR
Texas Instruments
-
SI8710AC-B-ISR
Skyworks Solutions Inc.
-
ISO7720FDR
Texas Instruments
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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
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