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Analog Devices Inc./Maxim Integrated MAX14930BASE+
- Part No.:
- MAX14930BASE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX14930BASE+.pdf
- Description:
- DGTL ISO 2750VRMS 4CH GP 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:334
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Product details
Overview
MAX14930BASE+ from Analog Devices is a 4-channel, unidirectional digital isolator with 2.75kVRMS galvanic isolation, 1Mbps data rate, and default-low output configuration in a 16-pin wide-body SOIC package (10.3mm × 7.5mm). It supports independent 1.71V–5.5V supplies on both sides, operates from –40°C to +125°C, and delivers robust common-mode transient immunity of 25kV/µs - ideal for isolated SPI and industrial fieldbus interfaces.
For engineers reviewing the MAX14930BASE+ datasheet, MAX14930BASE+ pinout, MAX14930BASE+ application, or MAX14930BASE+ equivalent, this device is selected for high-reliability multichannel isolation where safety-rated working voltage (443VRMS), low-power operation at 1Mbps, and UL/VDE-certified basic insulation are mandatory design requirements.
Technical Context
The MAX14930BASE+ implements capacitive isolation using Analog Devices' proprietary process, enabling signal transfer across galvanically separated domains without magnetic or optical coupling. Its four unidirectional channels support asymmetric direction configurations (e.g., A→B only), and each channel features integrated enable control (ENA/ENB) for three-state output management.
It complies with IEC 60747-5-5 for reinforced insulation, achieves 630VPK repetitive peak isolation voltage (VIORM), and withstands ±10kV surge per IEC 61000-4-5. The device uses differential input thresholds with 410mV hysteresis to reject noise and ensure reliable logic-level translation across supply domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 2.75kVRMS for 60s (UL1577), 443VRMS continuous working voltage (VIOWM) |
| Data Rate | 1Mbps - suitable for low-speed SPI, RS-232, and digital I/O isolation without timing closure risk |
| Supply Range | 1.71V to 5.5V per side - enables direct interfacing with 1.8V/3.3V/5V microcontrollers and FPGAs |
| Propagation Delay | 38.2–58.4ns (typical) - ensures deterministic timing for synchronous protocols |
| CMTI | 25kV/µs - maintains signal integrity in noisy motor drives and power converters |
| Operating Temp | –40°C to +125°C - qualified for under-hood automotive and industrial control environments |
| Package | 16-pin wide-body SOIC (10.3mm × 7.5mm, 8mm creepage/clearance) - meets IPC-2221B spacing for reinforced insulation |
Pinout & Package
Package: 16-pin wide-body SOIC (W16M+8), outline 21-0042, 8mm minimum creepage and clearance, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| INA1–INA4 | Side-A digital inputs | Accept 1.71V–5.5V logic signals; VIH = 0.7×VDDA, VIL ≤ 0.8V |
| INB1–INB4 | Side-B digital inputs | Accept 1.71V–5.5V logic signals; referenced to GNDB |
| OUTA1–OUTA4 | Side-A isolated outputs | Default-low when ENA inactive; VOH = VDDA – 0.4V, VOL = 0.4V @ 4mA |
| OUTB1–OUTB4 | Side-B isolated outputs | Default-low when ENB inactive; referenced to GNDB |
| ENA / ENB | Output enable controls | Active-high enables respective side's outputs; tEN = 5.1–16.3ns |
| VDDA / VDDB | Independent power supplies | Enable level translation between disparate voltage domains (e.g., 1.8V MCU ↔ 5V sensor) |
| GNDA / GNDB | Isolated ground references | Must not be connected - defines separate ground domains for isolation barrier |
Key Features
| Feature | Design Value |
|---|---|
| 2.75kVRMS Isolation | Enables safe interface between hazardous AC mains and low-voltage control logic per UL1577 and VDE 0884-11 |
| 1.71V–5.5V Dual-Supply Operation | Eliminates external level shifters when connecting mixed-voltage systems (e.g., 3.3V FPGA to 5V ADC) |
| 25kV/µs CMTI | Prevents data corruption in high-dV/dt environments like variable-frequency drives and inverters |
| 1Mbps Data Rate | Meets timing requirements for isolated SPI clocked up to ~500kHz and RS-232 at 9600–115.2k baud |
| Default-Low Output State | Ensures known logic state during power-up or fault conditions - critical for fail-safe system design |
Applications
| Industrial Fieldbus Interface | Isolated SPI Communication |
|---|---|
Use Scenario: Isolating Modbus RTU or Profibus DP nodes in factory automation cabinets exposed to 48V DC bus noise and ground loops. IC Role / Device Role / Timing Role: Digital isolator bridging controller-side UART and field-side transceiver, providing galvanic separation and ESD protection. Use Value: Prevents ground-loop currents from disrupting communication while maintaining <1µs pulse-width integrity for reliable frame detection. | Use Scenario: Connecting an isolated ADC (e.g., AD7768) to a host MCU across a PCB split plane in medical data acquisition systems. IC Role / Device Role / Timing Role: Four-channel unidirectional isolator carrying SCLK, MOSI, MISO, and CS signals with matched propagation delay skew <7ns. Use Value: Enables full-duplex SPI operation at up to 1MHz clock rate while preserving setup/hold timing margins across the isolation barrier. |
| Battery Management System (BMS) | Medical Sensor Isolation |
Use Scenario: Isolating cell-monitoring ICs (e.g., LTC6813) from the main BMS controller in EV battery packs operating at 400–800V DC. IC Role / Device Role / Timing Role: Unidirectional isolator transmitting voltage/temperature telemetry from high-side monitoring circuitry to low-side host processor. Use Value: Supports 443VRMS continuous working voltage and 630VPK repetitive peak rating - compliant with IEC 61010-1 for patient-connected equipment. | Use Scenario: Isolating analog front-end sensors (e.g., ECG, EEG) from digital processing units in diagnostic imaging devices. IC Role / Device Role / Timing Role: Galvanic barrier preventing leakage current paths that could compromise patient safety in Class BF applications. Use Value: Certified to VDE 0884-11 Basic Insulation with 1 MOOP rating - satisfies IEC 60601-1 ed. 3 creepage/clearance and dielectric strength requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8640ED-B-IS | 4-channel, 2.5kVRMS, 1Mbps, default-high output, QSOP-16 | Lower isolation rating (2.5kVRMS vs. 2.75kVRMS); no 8mm creepage; requires layout review for reinforced insulation compliance | Select when board space is constrained and 2.5kVRMS suffices; verify creepage/clearance against end-equipment safety standard. |
| ISO6740QDWR | 4-channel, 5kVRMS, 1Mbps, default-low, SOIC-16 (wide), automotive AEC-Q100 Grade 1 | Higher isolation (5kVRMS), AEC-Q100 qualified, but higher supply current (3.4mA/channel @ 1Mbps, 3.3V) | Choose for automotive under-hood use where 5kVRMS surge immunity and temperature grade are mandatory. |
Compared with SI8640ED-B-IS and ISO6740QDWR, the MAX14930BASE+ provides the optimal balance of certified 2.75kVRMS isolation, 8mm creepage, default-low safety state, and low quiescent current (1.2–1.9mA per side @ 1Mbps), making it preferred for industrial and medical systems requiring regulatory alignment without over-engineering.
Availability
MAX14930BASE+ is available at Aetrix Electronics and suitable for industrial fieldbus interfaces, isolated SPI subsystems, and battery management systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX14930BASE+ 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 MAX14930–MAX14932 family was designed specifically for high-reliability, safety-critical multichannel isolation in harsh environments - emphasizing regulatory compliance (UL/VDE/IEC), wide temperature operation, and robust noise immunity.
FAQ
What is the maximum working isolation voltage (VIOWM) rating for MAX14930BASE+?
The MAX14930BASE+ has a maximum working isolation voltage (VIOWM) of 443VRMS, meaning it can continuously withstand 443VRMS across its isolation barrier under normal operating conditions. This rating is certified per IEC 60747-5-5 and aligns with basic insulation requirements in IEC 61010-1 and IEC 60601-1. The device also supports 2.75kVRMS withstand voltage (VISO) for 60 seconds and 630VPK repetitive peak voltage (VIORM).
Does MAX14930BASE+ support bidirectional communication like I²C?
No, MAX14930BASE+ is a unidirectional digital isolator - all four channels transmit in one direction only (A→B or B→A depending on variant). For bidirectional protocols such as I²C, Analog Devices specifies the MAX14933 family. The MAX14930BASE+ is optimized for SPI, RS-232, RS-485, and general-purpose digital I/O where directionality is fixed and deterministic timing is required.
What is the default output state of MAX14930BASE+, and why does it matter?
The MAX14930BASE+ has a default-low output state: when the enable pin (ENA or ENB) is deasserted or the input side is unpowered, all outputs go to logic low. This fail-safe behavior prevents undefined states during power sequencing or fault conditions - critical in safety-critical systems like medical devices or industrial controllers where unintended actuation must be avoided.
Can MAX14930BASE+ operate with different supply voltages on each side (e.g., 1.8V on Side A and 5V on Side B)?
Yes, MAX14930BASE+ supports independent 1.71V to 5.5V supplies on Side A (VDDA/GNDA) and Side B (VDDB/GNDB). This allows seamless level translation - for example, interfacing a 1.8V FPGA I/O bank with a 5V isolated transceiver. Input thresholds scale with respective VDD (VIH = 0.7×VDD), and output drive strength is specified per supply rail, ensuring compatibility across mixed-voltage designs.
What safety certifications does MAX14930BASE+ hold, and which standards do they cover?
MAX14930BASE+ is certified to UL 1577 (file E351759), cUL (CSA Bulletin 5A), and VDE 0884-11:2017-01 for basic insulation. It meets IEC 61010-1 (measurement equipment), IEC 60950-1 (IT equipment), and IEC 60601-1 (medical devices) for working voltage up to 443VRMS. These certifications validate its suitability for industrial, medical, and test equipment applications requiring regulatory compliance.
MAX14930BASE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 16-SOIC (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:
- 4/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 2750Vrms
- Common Mode Transient Immunity (Min):
- 25kV/µs (Typ)
- Data Rate:
- 25Mbps
- Propagation Delay tpLH / tpHL (Max):
- 27.5ns, 28.8ns
- Pulse Width Distortion (Max):
- 2.6ns
- 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-SOIC
MAX14930BASE+ FAQ
1.How can I place an order for MAX14930BASE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX14930BASE+ 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 MAX14930BASE+ reliable?
The price and inventory of MAX14930BASE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX14930BASE+ is usually 5 days.
3.What payment methods are accepted for MAX14930BASE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX14930BASE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX14930BASE+?
MAX14930BASE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX14930BASE+ 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 MAX14930BASE+?
For technical support, including MAX14930BASE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX14930BASE+ requirements.
6.How does Aetrix verify that MAX14930BASE+ is sourced from the original manufacturer or authorized distributors?
All MAX14930BASE+ 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 MAX14930BASE+ meets industry standards.
7.What is the process for return or replacement of MAX14930BASE+?
All MAX14930BASE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX14930BASE+, 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 MAX14930BASE+ part is unused and in its original packaging.
Return procedure for MAX14930BASE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX14930BASE+ 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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