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Analog Devices Inc./Maxim Integrated MAX12930FASA+T
- Part No.:
- MAX12930FASA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX12930FASA+T.pdf
- Description:
- DGTL ISO 3750VRMS 2CH GP 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:6,582
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Product details
Overview
MAX12930FASA+T from Analog Devices is a 2-channel, unidirectional digital galvanic isolator in an 8-pin narrow-body SOIC package, rated for 3kVRMS isolation (60s), 25Mbps data rate, and 1.71V–5.5V dual-supply operation. It transfers signals in the same direction across isolated power domains with 50kV/µs CMTI and supports level translation between mixed-voltage systems such as 1.8V microcontrollers and 3.3V transceivers.
For engineers reviewing the MAX12930FASA+T datasheet, MAX12930FASA+T pinout, MAX12930FASA+T application, or MAX12930FASA+T equivalent, key selection criteria include confirmed unidirectional channel configuration, 3kVRMS narrow-SOIC isolation rating, 25Mbps B/E-speed grade, default-low output state (suffix 'F'), and compatibility with industrial fieldbus and battery management isolation requirements.
Technical Context
The MAX12930FASA+T implements two independent unidirectional signal paths using Maxim's proprietary capacitive isolation technology, enabling robust galvanic separation between side-A (VDDA/GNDA) and side-B (VDDB/GNDB) domains. Its architecture includes integrated refresh circuitry to maintain output accuracy during static input conditions and undervoltage lockout (1.5V–1.66V threshold) on both supplies.
It operates across ambient temperatures from –40°C to +125°C with guaranteed propagation delay skew ≤2ns (channel-to-channel, same direction), 445VRMS working isolation voltage (VIOWM), and 2pF barrier capacitance - all validated for narrow-body SOIC packaging with CTI ≥400 (Group II).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 3kVRMS withstand (60s), 445VRMS continuous working voltage - enables safe interface between 24V industrial buses and low-voltage logic. |
| Data Rate | 25Mbps (B/E speed grade) - supports isolated RS-485 at 20Mbps and digital I/O with timing margin. |
| Supply Range | 1.71V–5.5V per side - allows direct interfacing with 1.8V, 2.5V, 3.3V, and 5V logic without external level shifters. |
| CMTI | 50kV/µs (typ) - ensures reliable operation in high-noise motor drive or power supply environments. |
| Propagation Delay Skew | ≤2ns (channel-to-channel, same direction) - preserves timing alignment in parallel digital bus isolation. |
| Default Output State | Low (suffix 'F') - guarantees known logic state during power-up or open-circuit input conditions. |
| Operating Temperature | –40°C to +125°C - qualified for under-hood automotive, industrial PLC, and medical equipment use. |
Pinout & Package
MAX12930FASA+T uses an 8-pin narrow-body SOIC package (S8MS-22, outline 21-0041) with creepage/clearance ≥4mm and CTI ≥400 (Group II). Pin 1 = VDDA, Pin 2 = IN1, Pin 3 = IN2, Pin 4 = GNDA, Pin 5 = GNDB, Pin 6 = OUT2, Pin 7 = OUT1, Pin 8 = VDDB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VDDA) | Side-A power supply | Bypass with 0.1µF ceramic capacitor to GNDA; sets logic-high level on input side. |
| 2 (IN1) | Channel 1 input | Accepts 1.71V–5.5V logic; VIH = 0.7×VDDA, VIL = 0.8V (VDDA ≥2.25V). |
| 3 (IN2) | Channel 2 input | Independent unidirectional input; identical electrical specs to IN1. |
| 4 (GNDA) | Side-A ground reference | Return path for VDDA and inputs; galvanically isolated from GNDB. |
| 5 (GNDB) | Side-B ground reference | Return path for VDDB and outputs; physically separated from GNDA by isolation barrier. |
| 6 (OUT2) | Channel 2 output | Push-pull CMOS/TTL-compatible output; VOH ≥ VDDA–0.4V, VOL ≤ 0.4V. |
| 7 (OUT1) | Channel 1 output | Same drive strength and voltage specs as OUT2; default-low state active at power-up. |
| 8 (VDDB) | Side-B power supply | Bypass with 0.1µF ceramic capacitor to GNDB; defines output logic levels. |
Key Features
| Feature | Design Value |
|---|---|
| Unidirectional dual-channel architecture | Enables simultaneous isolation of parallel control lines (e.g., SPI SCLK/MOSI) without cross-talk or direction conflict. |
| Integrated refresh circuit | Maintains correct output state indefinitely during static input - eliminates need for external watchdog or toggling signals. |
| Dual independent supply rails | VDDA and VDDB each support 1.71V–5.5V - permits level translation between disparate logic families in one device. |
| High CMTI (50kV/µs) | Rejects fast common-mode transients from motor drives or switching power supplies without data corruption. |
| Low-power operation | 0.65mW/channel at 2Mbps (1.8V) - reduces thermal load in space-constrained industrial modules. |
Applications
| Industrial Fieldbus Isolation | Isolated UART Interface |
|---|---|
Use Scenario: Isolating RS-485 transceiver data lines in programmable logic controllers to prevent ground loop damage and noise coupling. IC Role / Device Role / Timing Role: Unidirectional signal translator between 3.3V controller UART TX/RX and 5V RS-485 transceiver, preserving timing integrity at up to 25Mbps. Use Value: Eliminates need for separate level shifters and optocouplers while meeting IEC 61000-4-5 surge immunity (±10kV) and 3kVRMS safety certification. | Use Scenario: Providing galvanic isolation between a battery management system (BMS) microcontroller and host communication interface. IC Role / Device Role / Timing Role: Bidirectional-capable isolation is not required; MAX12930FASA+T isolates BMS status reporting (OUT1/OUT2) from host command inputs (IN1/IN2) in same-direction flow. Use Value: Enables safe 1.8V MCU-to-3.3V host link with <2ns channel skew, ensuring accurate timestamping of cell voltage readings. |
| Digital I/O Isolation | Medical Sensor Interface |
Use Scenario: Isolating digital control signals (enable, reset, fault flags) between a main processor and high-voltage power stage in surgical equipment. IC Role / Device Role / Timing Role: Unidirectional isolator for safety-critical control lines, where default-low output ensures deactivation on power loss. Use Value: Meets UL1577 and VDE 0884-11 Basic Insulation requirements while supporting –40°C to +125°C operation in sterilizable enclosures. | Use Scenario: Isolating analog front-end sensor data acquisition lines from patient-connected circuits in diagnostic imaging devices. IC Role / Device Role / Timing Role: Digital isolator for SPI clock/data lines between isolated ADC and host processor, maintaining signal fidelity at 25Mbps sampling rates. Use Value: Provides 445VRMS working isolation and 2pF barrier capacitance to minimize leakage current (<10µA) per IEC 60601-1. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISO6721DR | 2-channel, unidirectional, 5000VRMS (wide SOIC), 50Mbps, 1.71V–5.5V, default-high output | Higher isolation rating and speed but requires PCB redesign for wide-body footprint and different default state | Select when 5kVRMS certification or >25Mbps throughput is mandatory; verify default-state logic compatibility. |
| ADUM120N0BRZ-RL7 | 2-channel, unidirectional, 3750VRMS (narrow SOIC), 150Mbps, 1.7V–5.5V, default-low output | Higher speed grade (C/F equivalent) and identical default state, but lower isolation rating than 5kVRMS variants | Choose for cost-sensitive designs needing 150Mbps with same pinout and default behavior; confirm 3750VRMS suffices for end-equipment standards. |
Compared with ISO6721DR and ADUM120N0BRZ-RL7, MAX12930FASA+T provides optimal balance of 3kVRMS certification, 25Mbps performance, and default-low behavior in standard narrow-SOIC layout - reducing BOM count and simplifying qualification for industrial fieldbus and BMS applications requiring proven reliability at temperature extremes.
Availability
MAX12930FASA+T is available at Aetrix Electronics and suitable for industrial automation, battery management systems, and medical diagnostics requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for MAX12930FASA+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 semiconductors, serving industrial, automotive, communications, and healthcare markets.
The MAX12930/MAX12931 family was designed specifically for robust, low-power digital signal isolation in harsh environments - emphasizing high CMTI, wide supply range, and safety-certified packaging for fieldbus, motor control, and energy infrastructure applications.
FAQ
What is the isolation voltage rating for MAX12930FASA+T?
MAX12930FASA+T is rated for 3kVRMS isolation voltage for 60 seconds and 445VRMS maximum working isolation voltage (VIOWM). It meets UL1577 and VDE 0884-11 Basic Insulation standards in its 8-pin narrow-body SOIC package, with CTI ≥400 and creepage/clearance ≥4mm - making it suitable for reinforced insulation in industrial and medical applications.
Does MAX12930FASA+T support level translation between different logic voltages?
Yes, MAX12930FASA+T supports true bidirectional level translation: VDDA (side-A supply) and VDDB (side-B supply) operate independently from 1.71V to 5.5V. This allows interfacing a 1.8V microcontroller (VDDA = 1.8V) with a 3.3V transceiver (VDDB = 3.3V) without external components, while maintaining full 25Mbps data rate and signal integrity.
What does the 'F' suffix in MAX12930FASA+T indicate?
The 'F' suffix in MAX12930FASA+T specifies default-low output behavior: when either input is unpowered or open-circuit, both OUT1 and OUT2 assume a logic-low state. This is critical for fail-safe operation in safety-critical systems like battery disconnect controls or emergency stop interfaces where inactive states must be explicitly defined.
Can MAX12930FASA+T replace optocouplers in existing designs?
Yes, MAX12930FASA+T can directly replace slow, aging-prone optocouplers in digital isolation applications. It offers superior performance: 25Mbps vs. typical 1–10Mbps optocoupler limits, 50kV/µs CMTI vs. <10kV/µs, no LED degradation, and guaranteed –40°C to +125°C operation. Pin-compatible replacement requires verifying supply voltage compatibility and updating bypass capacitor placement per SOIC layout.
What safety certifications does MAX12930FASA+T hold?
MAX12930FASA+T holds UL1577 certification (file E351759) for 3000VRMS isolation, cUL recognition to CSA Bulletin 5A, and VDE 0884-11:2017-01 Basic Insulation certification (ref. 5015017-4880-0001/272147/TL7/SCT) with VIORM = 630VPK and VIOWM = 445VRMS - fully compliant for industrial and medical equipment requiring certified galvanic isolation.
MAX12930FASA+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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+T FAQ
1.How can I place an order for MAX12930FASA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX12930FASA+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 MAX12930FASA+T reliable?
The price and inventory of MAX12930FASA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX12930FASA+T is usually 5 days.
3.What payment methods are accepted for MAX12930FASA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX12930FASA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX12930FASA+T?
MAX12930FASA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX12930FASA+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 MAX12930FASA+T?
For technical support, including MAX12930FASA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX12930FASA+T requirements.
6.How does Aetrix verify that MAX12930FASA+T is sourced from the original manufacturer or authorized distributors?
All MAX12930FASA+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 MAX12930FASA+T meets industry standards.
7.What is the process for return or replacement of MAX12930FASA+T?
All MAX12930FASA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX12930FASA+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 MAX12930FASA+T part is unused and in its original packaging.
Return procedure for MAX12930FASA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX12930FASA+T Tags
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ISO1212DBQR
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ISO6721BDR
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SI8710AC-B-ISR
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ISO7720FDR
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ISO7721DR
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ISO7721FDR
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SI8710CC-B-ISR
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ISO6741FQDWRQ1
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ISO7721DWVR
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ISO7762FDBQR
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ISO7741DWR
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ISO7741FDWR
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