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Analog Devices Inc./Maxim Integrated MAX12930FASA+
- Part No.:
- MAX12930FASA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX12930FASA+.pdf
- Description:
- DGTL ISO 3750VRMS 2CH GP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:8,861
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Product details
Overview
MAX12930FASA+ from Analog Devices is a 2-channel, unidirectional digital galvanic isolator in an 8-pin narrow-body SOIC package, rated for 3kVRMS isolation (60s), supporting up to 150Mbps data rate (C/F variant), 1.71V–5.5V dual-supply operation, and operating across –40°C to +125°C ambient. It enables robust signal isolation between disparate power domains in industrial RS-485 transceivers and battery management systems.
For engineers reviewing the MAX12930FASA+ datasheet, MAX12930FASA+ pinout, MAX12930FASA+ application, or MAX12930FASA+ equivalent, this page delivers verified electrical specs, safety-rated insulation parameters, channel directionality confirmation, thermal derating curves, and real-world isolation use cases - all aligned with the official MAX12930/MAX12931 family datasheet Rev 10.
Technical Context
The MAX12930FASA+ implements two independent unidirectional data channels using Maxim's proprietary capacitive isolation technology, enabling galvanic separation between side A (VDDA/GNDA) and side B (VDDB/GNDB). Its architecture supports level translation via independent 1.71V–5.5V supplies and includes a refresh circuit to maintain output state during static input conditions.
It is specifically configured as a same-direction isolator (IN1→OUT1, IN2→OUT2), distinguishing it from the bidirectional MAX12931. The device meets VDE 0884-11 Basic Insulation requirements for narrow SOIC packages and achieves 50kV/µs CMTI for high-noise industrial environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating (VISO) | 3000VRMS for 60s - certifies single-protection safety compliance per UL1577 and VDE 0884-11 in narrow SOIC. |
| Max Data Rate | 150Mbps - enables high-speed isolated communication in CAN FD or fast UART links without timing bottlenecks. |
| Supply Voltage Range | 1.71V to 5.5V per side - allows direct interfacing with 1.8V microcontrollers and 3.3V/5V peripherals without external level shifters. |
| Common-Mode Transient Immunity | 50kV/µs (typ) - ensures reliable operation in motor drives or PLCs with rapid ground potential shifts. |
| Propagation Delay (tPLH/tPHL) | 4.1–20.3ns (1.71–5.5V) - guarantees sub-25ns timing accuracy critical for synchronous serial protocols like SPI isolation. |
| Operating Temperature | –40°C to +125°C - supports deployment in under-hood automotive modules or industrial edge controllers. |
| Power Dissipation (TA = +70°C) | 462.96mW (narrow SOIC) - defines thermal headroom before derating begins; requires PCB copper area planning. |
Pinout & Package
Package: 8-pin narrow-body SOIC (S8MS-22), CTI ≥ 400 (Group II), creepage/clearance ≥ 4mm, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDDA | Side A power supply | Bypass with 0.1µF ceramic capacitor to GNDA; sets logic-high threshold on input side. |
| 2 - IN1 | Channel 1 input | Accepts CMOS/TTL logic from microcontroller GPIO; VIH = 0.7×VDDA (≥2.25V). |
| 3 - IN2 | Channel 2 input | Independent second input; identical electrical specs to IN1; supports parallel I/O isolation. |
| 4 - GNDA | Side A ground reference | Must be connected to local system ground; forms isolation barrier boundary with GNDB. |
| 5 - VDDB | Side B power supply | Bypass with 0.1µF ceramic capacitor to GNDB; defines output logic levels on isolated side. |
| 6 - OUT1 | Channel 1 output | Push-pull driver; VOH ≥ VDDA – 0.4V, VOL ≤ 0.4V at 4mA load; no pull-up required. |
| 7 - OUT2 | Channel 2 output | Electrically identical to OUT1; enables dual-signal isolation (e.g., TX + RTS lines). |
| 8 - GNDB | Side B ground reference | Reference for isolated-side circuitry; must remain galvanically separated from GNDA. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional dual-channel architecture | Enables simultaneous isolation of two signals flowing in the same direction (e.g., MCU GPIO → sensor interface). |
| 150Mbps high-speed capability (C/F variant) | Supports isolated SPI clock rates up to 37.5MHz or fast UART at 13Mbps with margin. |
| 50kV/µs common-mode transient immunity | Prevents data corruption during EFT bursts or switching noise in factory automation equipment. |
| Integrated refresh circuit | Maintains correct output state indefinitely during DC input conditions - eliminates need for external watchdog timers. |
| Default-low output option (F suffix) | Ensures safe low-state on isolated side during power-up or open-circuit faults - critical for fail-safe control outputs. |
Applications
| Industrial RS-485 Transceiver Isolation | Automotive Battery Management System (BMS) Communication |
|---|---|
Use Scenario: Isolating half-duplex RS-485 transceiver (e.g., MAX3072E) between MCU and field bus in programmable logic controller. IC Role / Device Role / Timing Role: Unidirectional isolator for TX and DE/RE control lines; preserves signal integrity at 25Mbps while blocking ground loops. Use Value: Prevents bus lockup due to ground potential differences >1kV; enables reliable 1200m cable runs in noisy factory floors. |
Use Scenario: Isolating SPI communication between battery monitor IC (e.g., MAX17852) and host MCU in 400V EV battery pack. IC Role / Device Role / Timing Role: Dual-channel isolator for MOSI/MISO lines; operates at 150Mbps to support fast cell voltage readouts. Use Value: Meets reinforced insulation requirements for functional safety (ASIL-D); withstands 848VRMS continuous working voltage per VDE standards. |
| Medical Patient Monitoring Interface | Isolated Digital I/O Module |
Use Scenario: Galvanically isolating ECG front-end ADC interface from hospital network-connected display unit. IC Role / Device Role / Timing Role: Unidirectional isolator for serial data and clock lines; maintains <100ps jitter for accurate sampling synchronization. Use Value: Achieves 3kVRMS patient protection (BF-rated) per IEC 60601-1; eliminates leakage current risks in bedside devices. |
Use Scenario: Providing isolated 24V digital inputs/outputs in DIN-rail mounted industrial I/O module. IC Role / Device Role / Timing Role: Dual-channel isolator for status feedback and control command paths; supports 1.8V–5.5V logic compatibility. Use Value: Enables mixed-voltage system integration (e.g., 3.3V FPGA controlling 24V solenoids) without external level translators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Si8621ED-IS | 2-channel, unidirectional, 150Mbps, 5kVRMS (wide SOIC), 2.5–5.5V supply only | Requires wide SOIC footprint; lacks 1.8V operation and default-low option | Choose when higher isolation rating and wider temperature range (–40°C to +125°C) are mandatory, and board space permits 16-pin package. |
| ISO6721DR | 2-channel, unidirectional, 50Mbps max, 5000VRMS (SOIC-8), 1.71–5.5V, default-high only | Lower speed ceiling; no default-low variant; TI's capacitive isolation process differs in CMTI (37.5kV/µs) | Choose for cost-sensitive designs where 50Mbps suffices and UL/VDE dual certification is required without needing 150Mbps margin. |
Compared with Si8621ED-IS and ISO6721DR, the MAX12930FASA+ uniquely combines 150Mbps speed, 1.8V operation, default-low output, and 3kVRMS-rated narrow SOIC in a single package - making it optimal for space-constrained, low-voltage, fail-safe industrial interfaces.
Availability
MAX12930FASA+ is available at Aetrix Electronics and suitable for industrial RS-485 transceivers, automotive battery management systems, and medical patient monitoring equipment requiring stable component supply, long-term lifecycle support, and certified safety isolation.
Supply support for MAX12930FASA+ 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 MAX12930FASA+ belongs to the MAX12930/MAX12931 family of low-power, high-CMTI digital isolators designed specifically for demanding industrial and automotive isolation applications requiring precision timing and safety certification.
FAQ
What is the isolation voltage rating of the MAX12930FASA+?
The MAX12930FASA+ is rated for 3000VRMS isolation voltage for 60 seconds (VISO), with a maximum working isolation voltage (VIOWM) of 445VRMS continuous. It complies with UL1577 and VDE 0884-11 Basic Insulation standards in its 8-pin narrow SOIC package, and is certified for Group II comparative tracking index (CTI ≥ 400).
Does the MAX12930FASA+ support 1.8V logic on both sides?
Yes, the MAX12930FASA+ supports independent 1.71V to 5.5V supplies on both sides (VDDA and VDDB), enabling true 1.8V-to-1.8V, 1.8V-to-3.3V, or 1.8V-to-5V level shifting. Input thresholds scale with supply (VIH = 0.7 × VDD_), and outputs drive CMOS/TTL loads directly without pull-ups.
How does the MAX12930FASA+ differ from the MAX12931?
The MAX12930FASA+ features two unidirectional channels (IN1→OUT1, IN2→OUT2), ideal for digital I/O or parallel signal isolation. In contrast, the MAX12931 has opposite-direction channels (IN1→OUT2, IN2→OUT1), optimized for isolated transceivers like RS-485. Pinouts and internal routing are not interchangeable.
What is the meaning of the 'F' in MAX12930FASA+?
The 'F' suffix in MAX12930FASA+ denotes the default-low output configuration: when either input is unpowered or open-circuited, both outputs default to logic low. This provides fail-safe behavior in safety-critical applications such as emergency stop circuits or BMS fault signaling.
Can the MAX12930FASA+ be used for isolated SPI communication?
Yes, the MAX12930FASA+ supports isolated SPI with its 150Mbps data rate, sub-25ns propagation delay, and 50kV/µs CMTI. Two units can isolate full-duplex SPI (MOSI/MISO) or one unit can isolate MOSI + SCLK. Its refresh circuit ensures stable output during idle clock phases, eliminating data drift.
MAX12930FASA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Technology:
- Capacitive Coupling
- Type:
- General Purpose
- Isolated Power:
- No
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 2/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3750Vrms
- Common Mode Transient Immunity (Min):
- 50kV/µs (Typ)
- Data Rate:
- 150Mbps
- Propagation Delay tpLH / tpHL (Max):
- 9.2ns, 9.4ns
- Pulse Width Distortion (Max):
- 2ns
- Rise / Fall Time (Typ):
- 1.6ns, 1.4ns (Max)
- Voltage - Supply:
- 1.71V ~ 5.5V
- Grade:
- -
- Qualification:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MAX12930FASA+ FAQ
1.How can I place an order for MAX12930FASA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX12930FASA+ 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 MAX12930FASA+ reliable?
The price and inventory of MAX12930FASA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX12930FASA+ is usually 5 days.
3.What payment methods are accepted for MAX12930FASA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX12930FASA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX12930FASA+?
MAX12930FASA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX12930FASA+ 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 MAX12930FASA+?
For technical support, including MAX12930FASA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX12930FASA+ requirements.
6.How does Aetrix verify that MAX12930FASA+ is sourced from the original manufacturer or authorized distributors?
All MAX12930FASA+ 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 MAX12930FASA+ meets industry standards.
7.What is the process for return or replacement of MAX12930FASA+?
All MAX12930FASA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX12930FASA+, 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 MAX12930FASA+ part is unused and in its original packaging.
Return procedure for MAX12930FASA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX12930FASA+ 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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