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Analog Devices Inc./Maxim Integrated MAX14131CAEE+T
- Part No.:
- MAX14131CAEE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX14131CAEE+T.pdf
- Description:
- 4 CHANNEL (3/1 CONFIG), 150MBPS,
- Quantity:
- Payment:
- Shipping:
Inventory:2,111
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Product details
Overview
MAX14131CAEE+T from Analog Devices is a 4-channel, unidirectional digital isolator with 1kVRMS isolation rating, 150Mbps maximum data rate, and QSOP-16 package (6mm × 5mm). It features independent 1.71V–5.5V dual-supply operation, 25kV/µs common-mode transient immunity, and operates across –40°C to +125°C ambient temperature - ideal for isolated SPI and industrial I/O in space-constrained PLC modules.
For engineers reviewing the MAX14131CAEE+T datasheet, MAX14131CAEE+T pinout, MAX14131CAEE+T application, or MAX14131CAEE+T equivalent, this page delivers verified electrical specs, channel configuration details, safety certifications (UL, VDE Basic Insulation), thermal derating curves, and real-world design context for high-speed, multichannel galvanic isolation in harsh environments.
Technical Context
The MAX14131CAEE+T implements four independent unidirectional isolation channels using capacitive coupling and on-chip signal conditioning. Its architecture supports asymmetric supply voltages (e.g., 1.8V side A / 3.3V side B), enabling level translation without external logic. Each channel includes enable control (ENA/ENB) and default-low output behavior.
It belongs to the MAX14130–MAX14131 family optimized for compact QSOP packaging and 1kVRMS isolation - distinct from the higher-isolation MAX14930–MAX14932 series. The device is production-tested at +125°C and guaranteed over full temperature range per design, with CMTI validated at ±1000V common-mode step.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 1000VRMS for 60s - certified for basic insulation in medical and industrial equipment per IEC 60601-1 and IEC 61010-1. |
| Max Data Rate | 150Mbps - enables high-speed SPI clocking up to 75MHz with clean eye diagrams (peak jitter ≤160ps at 1.8V). |
| Propagation Delay | 4.9–14.9ns (tPHL/tPLH) - ensures sub-15ns timing budgets for real-time control loops and fast peripheral interfacing. |
| CMTI | 25kV/µs - maintains signal integrity in noisy motor drives and power converters with rapid ground shifts. |
| Supply Range | 1.71V–5.5V per side - supports direct interface to low-voltage FPGAs (1.8V) and legacy microcontrollers (5V) without level shifters. |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive, industrial automation, and battery management systems. |
| Package | 16-pin QSOP (6mm × 5mm) - 4mm creepage/clearance meets reinforced insulation requirements in compact PCB layouts. |
Pinout & Package
Package: 16-pin QSOP (E16MS+1F), 6.0mm × 5.0mm body, 0.65mm pitch, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDDA | Primary-side power supply | Supplies side A (input side); accepts 1.71V–5.5V; powers INA1–INA4 and ENA. |
| GNDA | Primary-side ground reference | Reference for all side A inputs and ENA; must be isolated from GNDB. |
| INA1–INA4 | Input signals to side A | CMOS-compatible digital inputs; VIH = 0.7×VDDA, VIL = 0.6–0.8V depending on VDDA. |
| ENA | Enable control for side A outputs | Active-high; disables OUTA1–OUTA4 when low (high-impedance state); pull-up current –2.3µA typical. |
| VDDB | Secondary-side power supply | Supplies side B (output side); independent 1.71V–5.5V domain; powers OUTB1–OUTB4 and ENB. |
| GNDB | Secondary-side ground reference | Reference for all side B outputs and ENB; galvanically isolated from GNDA. |
| OUTB1–OUTB4 | Isolated output signals | CMOS outputs; VOH = VDDB–0.4V @ –4mA, VOL = 0.4V @ 4mA; default-low when input unpowered. |
| ENB | Enable control for side B outputs | Active-high; disables OUTB1–OUTB4 when low; allows independent channel gating per side. |
Key Features
| Feature | Design Value |
|---|---|
| 150Mbps high-speed isolation | Enables SPI clock rates up to 75MHz with <15ns propagation delay and <1ns pulse-width distortion - critical for time-sensitive sensor fusion. |
| 25kV/µs CMTI | Prevents data corruption during fast transients in motor drives and inverters, eliminating need for external filtering or guard traces. |
| Dual 1.71V–5.5V supplies | Permits direct connection between 1.8V FPGA I/O banks and 3.3V MCU peripherals - no external level translators required. |
| Default-low output state | Ensures safe, known logic state on side B during power-up, brown-out, or side A failure - reduces risk of spurious actuation in safety-critical I/O. |
| QSOP-16 compact footprint | 6mm × 5mm package saves >30% board area vs. SOIC-16; 4mm creepage supports reinforced insulation in tight spacing designs. |
Applications
| Industrial PLC I/O Modules | SPI-Isolated Sensor Interfaces |
|---|---|
|
Use Scenario: Isolating digital I/O lines between field-side sensors/actuators and controller-side logic in programmable logic controllers. IC Role / Device Role / Timing Role: Provides four independent unidirectional isolation channels for discrete input monitoring and output driving, with 150Mbps capability supporting fast status polling. Use Value: Eliminates ground loop noise and protects controller from surges up to 4kV (IEC 61000-4-5), while maintaining deterministic timing for cycle times under 1ms. |
Use Scenario: Isolating high-speed SPI communication between an ADC/DAC and host MCU in precision measurement systems. IC Role / Device Role / Timing Role: Transfers SCLK, MOSI, MISO, and CS signals across isolation barrier with matched propagation delays (<3ns skew) to preserve SPI timing margins. Use Value: Enables 75MHz SPI clocking with <160ps peak jitter - preserves 16-bit+ resolution in isolated data acquisition without added timing compensation. |
| Battery Management Systems (BMS) | Medical Patient Monitoring |
|
Use Scenario: Isolating cell voltage monitoring and balancing signals in multi-cell lithium-ion battery packs. IC Role / Device Role / Timing Role: Delivers galvanic separation between high-voltage battery stack (up to 1000V) and low-voltage MCU, with 1kVRMS rating meeting IEC 61000-4-5 surge immunity. Use Value: Supports functional safety requirements (IEC 61508 SIL-2) via certified basic insulation and 125°C operation in hot battery enclosures. |
Use Scenario: Isolating ECG, EEG, or SpO₂ sensor front-ends from main processing unit in Class II medical devices. IC Role / Device Role / Timing Role: Provides patient-connected side (side A) isolation with 1kVRMS withstand and 443VRMS working voltage - compliant with IEC 60601-1 3rd ed. Use Value: Meets MOOP (1x Means of Patient Protection) requirement with 4mm creepage in QSOP package, reducing risk of leakage current hazards. |
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, 150Mbps, 2.5kVRMS isolation, SOIC-16 package (10.3mm × 7.5mm) | Higher isolation rating but larger footprint; lacks default-low output behavior | Select when 2.5kVRMS is mandated by system safety architecture; avoid if board space is constrained. |
| ISO6741QDWR | 4-channel, 50Mbps, 5kVRMS, SOIC-16, default-high outputs | Lower speed, higher isolation, different default state; TI's reinforced insulation certification | Choose for ultra-high isolation needs (e.g., mains-connected interfaces); not suitable for 150Mbps SPI. |
Compared with MAX14131CAEE+T, SI8641ED-B-IS offers greater isolation margin but doubles PCB area, while ISO6741QDWR trades speed for reinforced insulation - making MAX14131CAEE+T optimal for space-limited, high-speed industrial I/O where 1kVRMS suffices.
Availability
MAX14131CAEE+T is available at Aetrix Electronics and suitable for industrial PLCs, battery management systems, medical patient monitors, and isolated SPI sensor interfaces requiring stable component supply and long-term lifecycle support.
Supply support for MAX14131CAEE+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 MAX14130–MAX14131 family was designed specifically for compact, high-speed digital isolation in space-constrained industrial and medical systems - delivering 1kVRMS safety certification in QSOP packaging without sacrificing 150Mbps throughput.
FAQ
What is the isolation voltage rating of the MAX14131CAEE+T?
The MAX14131CAEE+T is rated for 1000VRMS withstand isolation voltage for 60 seconds, with 443VRMS maximum working voltage and 424VPK repetitive peak voltage. It is certified to UL1577, VDE 0884-11 (Basic Insulation), and IEC 60601-1 for medical applications - meeting 1 MOOP safety requirement.
Does the MAX14131CAEE+T support bidirectional communication?
No, the MAX14131CAEE+T provides four unidirectional channels only (A→B direction). For bidirectional protocols like I²C, Analog Devices recommends the MAX14933 - a separate device in the same family with integrated bus arbitration and slew-rate control.
What are the supply voltage requirements for MAX14131CAEE+T?
The MAX14131CAEE+T requires independent supplies: VDDA (1.71V–5.5V) for side A inputs and ENA, and VDDB (1.71V–5.5V) for side B outputs and ENB. Both rails may operate at different voltages simultaneously - e.g., 1.8V on side A and 3.3V on side B - enabling seamless level translation.
How does the enable functionality work on MAX14131CAEE+T?
The MAX14131CAEE+T features two independent enable pins: ENA controls side A outputs (OUTA1–OUTA4), and ENB controls side B outputs (OUTB1–OUTB4). When asserted high, outputs drive normally; when low, outputs enter high-impedance state - allowing shared bus architectures and power sequencing control.
Is the MAX14131CAEE+T pin-compatible with other devices in the MAX14130–MAX14131 family?
Yes, all MAX14130–MAX14131 variants share identical QSOP-16 pinout and footprint (E16MS+1F), including MAX14130CAEE+T (1Mbps), MAX14131CAEE+T (150Mbps), and their default-high counterparts (e.g., MAX14131AAEE+T). Only data rate and default output state differ - enabling drop-in upgrades.
MAX14131CAEE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- 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+T FAQ
1.How can I place an order for MAX14131CAEE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14131CAEE+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 MAX14131CAEE+T reliable?
The price and inventory of MAX14131CAEE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14131CAEE+T is usually 5 days.
3.What payment methods are accepted for MAX14131CAEE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14131CAEE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14131CAEE+T?
MAX14131CAEE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14131CAEE+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 MAX14131CAEE+T?
For technical support, including MAX14131CAEE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14131CAEE+T requirements.
6.How does Aetrix verify that MAX14131CAEE+T is sourced from the original manufacturer or authorized distributors?
All MAX14131CAEE+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 MAX14131CAEE+T meets industry standards.
7.What is the process for return or replacement of MAX14131CAEE+T?
All MAX14131CAEE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX14131CAEE+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 MAX14131CAEE+T part is unused and in its original packaging.
Return procedure for MAX14131CAEE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX14131CAEE+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
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