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Analog Devices Inc./Maxim Integrated MAX14131FAEE+
- Part No.:
- MAX14131FAEE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX14131FAEE+.pdf
- Description:
- DGTL ISO 1000VRMS 4CH GP 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:288
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Product details
Overview
MAX14131FAEE+ from Analog Devices is a 4-channel, unidirectional digital isolator with 1kVRMS isolation rating, housed in a compact 16-pin QSOP package (6mm × 5mm). It supports up to 150Mbps data rate, operates across 1.71V–5.5V dual supplies per side, and delivers 25kV/µs common-mode transient immunity - enabling robust signal isolation in industrial SPI and digital I/O interfaces at ambient temperatures from –40°C to +125°C.
For engineers reviewing the MAX14131FAEE+ datasheet, MAX14131FAEE+ pinout, MAX14131FAEE+ application, or MAX14131FAEE+ equivalent, this device is selected for high-speed, space-constrained multichannel isolation where level translation, low propagation delay (as low as 4.9ns), and guaranteed 1kVRMS withstand voltage are critical design requirements.
Technical Context
The MAX14131FAEE+ belongs to the MAX14130–MAX14131 family of 4-channel, unidirectionally configured isolators optimized for QSOP footprint. Its channel configuration is fixed as 3 channels A→B and 1 channel B→A (INA1–INA3 → OUTB1–OUTB3; INB1 → OUTA1), supporting asymmetric bidirectional protocols like isolated SPI with separate control/data paths.
It implements capacitive isolation with integrated driver/receiver circuitry on each side, featuring independent enable inputs (ENA/ENB), default-low output behavior, and guaranteed operation up to 125°C ambient. The device meets VDE 0884-11 Basic Insulation and UL1577 certification requirements for 1kVRMS working isolation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 1kVRMS withstand for 60s (VISO); 300VRMS continuous working voltage (VIOWM) - defines safe operating voltage envelope in industrial power domains. |
| Data Rate | Up to 150Mbps - enables high-speed serial interface isolation (e.g., fast SPI clock domains) without timing bottlenecks. |
| Propagation Delay | 4.9ns (tPHL, typical at 5V) - ensures sub-5ns timing precision critical for synchronous digital interfaces. |
| Common-Mode Transient Immunity | 25kV/µs - maintains signal integrity in noisy motor drive or power supply environments with rapid ground shifts. |
| Supply Voltage Range | 1.71V to 5.5V per side (VDDA/VDDA) - allows direct interfacing with 1.8V, 2.5V, 3.3V, and 5V logic without external level shifters. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial PLC, and battery management systems. |
| Package | 16-pin QSOP (6mm × 5mm) - provides 4mm creepage/clearance in minimal PCB area versus SOIC alternatives. |
Pinout & Package
MAX14131FAEE+ uses a 16-pin QSOP package (outline 21-0055, land pattern 90-0167) with 0.65mm pitch, 6mm × 5mm body, and RoHS-compliant lead finish ("+" suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 (INA1–INA4) | Side-A input signals | Logic-level inputs referenced to GNDA; accept 1.71V–5.5V-compatible thresholds (VIH = 0.7×VDDA). |
| 5 (GNDA) | Side-A ground reference | Return path for VDDA and all Side-A inputs/outputs; galvanically isolated from GNDB. |
| 6 (VDDA) | Side-A supply | Power for Side-A input receivers and internal logic; supports 1.71V–5.5V operation. |
| 7, 8, 9 (OUTB1–OUTB3) | Side-B output signals (A→B) | CMOS outputs referenced to GNDB; drive loads up to 4mA with VOH ≥ VDDB–0.4V. |
| 10 (ENB) | Side-B output enable | Active-high enable for OUTB1–OUTB3; outputs go to high-impedance when ENB = low. |
| 11 (INB1) | Side-B input signal (B→A) | Single reverse-direction input referenced to GNDB; drives OUTA1 on Side-A. |
| 12 (GNDB) | Side-B ground reference | Return path for VDDB and all Side-B inputs/outputs; galvanically isolated from GNDA. |
| 13 (VDDB) | Side-B supply | Power for Side-B output drivers and internal logic; independent 1.71V–5.5V supply. |
| 14 (OUTA1) | Side-A output signal (B→A) | CMOS output referenced to GNDA; complements INB1 for full-duplex asymmetric communication. |
| 15 (ENA) | Side-A output enable | Active-high enable for OUTA1; controls three-state behavior of reverse-direction output. |
| 16 (NC) | No connect | Internally unused pin; must be left floating or tied to GNDA/GNDB per layout guidelines. |
Key Features
| Feature | Design Value |
|---|---|
| QSOP package with 4mm creepage | Enables high-density PCB layouts in space-constrained industrial modules while meeting basic insulation safety spacing. |
| 150Mbps maximum data rate | Supports high-throughput isolated communication (e.g., >20MHz SPI clocks) without signal degradation or timing margin loss. |
| 25kV/µs CMTI | Prevents data corruption during fast transients in motor drives, inverters, or switching power supplies. |
| Independent dual-supply operation | Allows level translation between 1.8V microcontrollers and 3.3V/5V peripherals without external translators. |
| Default-low output state | Ensures known logic state during power-up or input float conditions - critical for fail-safe system initialization. |
| VDE 0884-11 & UL1577 certified | Meets international safety standards for reinforced insulation in medical, industrial, and energy applications. |
Applications
| Isolated SPI Interface | Industrial Digital I/O Module |
|---|---|
|
Use Scenario: Isolating SPI bus between MCU (3.3V) and isolated ADC/DAC (5V) in programmable logic controller backplane. IC Role / Device Role / Timing Role: Provides galvanic separation for SCLK, MOSI, MISO, and CS lines with <5ns propagation skew to preserve setup/hold timing. Use Value: Enables noise-immune, high-speed sensor data acquisition in 24V DC industrial environments with ground potential differences up to 1kVRMS. |
Use Scenario: Digitally isolating 24V discrete input/output signals in factory automation I/O terminal blocks. IC Role / Device Role / Timing Role: Translates 24V field-side logic to 3.3V controller-side logic while blocking surge transients and ground loops. Use Value: Eliminates need for optocouplers and external level-shifting components, reducing BOM count and improving long-term reliability. |
| Battery Management System (BMS) | Medical Sensor Interface |
|
Use Scenario: Isolating cell monitoring ICs (e.g., analog front-end) from main BMS controller across 48V–800V battery stacks. IC Role / Device Role / Timing Role: Transfers voltage/current measurement data and fault signals across isolation barrier with <100ps jitter at 10Mbps. Use Value: Meets IEC 61010-1 basic insulation requirements for patient-connected equipment while supporting fast cell balancing commands. |
Use Scenario: Isolating ECG/EEG analog front-end signals from digital processing unit in portable diagnostic devices. IC Role / Device Role / Timing Role: Provides 1kVRMS patient-isolation barrier for digital control lines (e.g., SPI config, GPIO alerts) without compromising signal fidelity. Use Value: Achieves 2 MOOP compliance with single-component isolation, simplifying safety certification for Class II medical devices. |
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, SOIC-16 package (10.3mm × 7.5mm); higher θJA (71°C/W) vs. QSOP's 103.7°C/W. | Larger footprint; requires more PCB area but offers higher creepage (8mm) for enhanced safety margin. | Select when board space permits and higher creepage is mandated by end-equipment safety standards. |
| ADUM141E0BRZ | 4-channel, 3.75kVRMS, 150Mbps, SOIC-16; higher isolation rating but 100mA max output drive vs. MAX14131FAEE+'s 4mA. | Targeted at higher-voltage industrial systems requiring reinforced insulation; not drop-in due to different enable logic and pinout. | Choose when 3.75kVRMS isolation is required for mains-connected equipment, accepting larger size and non-compatible pin mapping. |
Compared with SI8641ED-B-IS and ADUM141E0BRZ, the MAX14131FAEE+ uniquely combines 150Mbps speed, 1kVRMS rating, and QSOP footprint - making it optimal for space-constrained, high-speed industrial and medical designs where moderate isolation voltage suffices and thermal performance in small packages matters.
Availability
MAX14131FAEE+ is available at Aetrix Electronics and suitable for industrial automation, battery management systems, and medical diagnostics requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MAX14131FAEE+ 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 since 1965.
The MAX14130–MAX14131 family was designed specifically for compact, high-speed digital isolation in space- and power-constrained industrial and medical systems - emphasizing low propagation delay, wide supply range, and QSOP integration.
FAQ
What is the maximum data rate supported by MAX14131FAEE+?
The MAX14131FAEE+ supports a maximum data rate of 150Mbps under specified conditions (VDDA/VDDB = 4.5V–5.5V, CL = 15pF). This is validated per the MAX1493_B/E dynamic characteristics table in the datasheet and enables high-speed isolated SPI and digital I/O applications without timing violations.
Does MAX14131FAEE+ support bidirectional communication?
The MAX14131FAEE+ supports asymmetric bidirectional communication: three channels transmit from Side-A to Side-B (INA1–INA3 → OUTB1–OUTB3), and one channel transmits from Side-B to Side-A (INB1 → OUTA1). It does not support fully bidirectional pins like I²C; for that, the MAX14933 is recommended.
What safety certifications does MAX14131FAEE+ hold?
The MAX14131FAEE+ is certified to UL1577 (3750VRMS, single protection), CSA C22.2 No. 5A (cUL), and VDE 0884-11:2017 (Basic Insulation, VIOTM = 1700VPK, VIORM = 424VPK). These certifications are documented in the MAX14130–MAX14131 Insulation Characteristics section of the datasheet.
Can MAX14131FAEE+ operate with different supply voltages on each side?
Yes - MAX14131FAEE+ supports independent 1.71V to 5.5V supplies on Side-A (VDDA/GNDA) and Side-B (VDDB/GNDB). This enables seamless level translation between disparate logic families (e.g., 1.8V FPGA ↔ 5V sensor interface) without external components.
What is the propagation delay specification for MAX14131FAEE+ at 3.3V operation?
At VDDA = VDDB = 3.3V, the MAX14131FAEE+ exhibits tPHL = 5.3ns (typical) and tPLH = 5.2ns (typical) for the A→B direction, and tPHL = 5.3ns / tPLH = 5.2ns for the B→A direction (per MAX1493_B/E dynamic specs). Pulse-width distortion remains ≤1ns, ensuring precise timing alignment.
MAX14131FAEE+ 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:
- General Purpose
- 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
MAX14131FAEE+ FAQ
1.How can I place an order for MAX14131FAEE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14131FAEE+ 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 MAX14131FAEE+ reliable?
The price and inventory of MAX14131FAEE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14131FAEE+ is usually 5 days.
3.What payment methods are accepted for MAX14131FAEE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14131FAEE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14131FAEE+?
MAX14131FAEE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14131FAEE+ 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 MAX14131FAEE+?
For technical support, including MAX14131FAEE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14131FAEE+ requirements.
6.How does Aetrix verify that MAX14131FAEE+ is sourced from the original manufacturer or authorized distributors?
All MAX14131FAEE+ 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 MAX14131FAEE+ meets industry standards.
7.What is the process for return or replacement of MAX14131FAEE+?
All MAX14131FAEE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX14131FAEE+, 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 MAX14131FAEE+ part is unused and in its original packaging.
Return procedure for MAX14131FAEE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX14131FAEE+ Tags
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