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Analog Devices Inc./Maxim Integrated MAX12930EASA+T
- Part No.:
- MAX12930EASA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Digital Isolators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX12930EASA+T.pdf
- Description:
- DIGITAL ISOLATOR 3.75KVRMS 2CH
- Quantity:
- Payment:
- Shipping:
Inventory:2,233
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Product details
Overview
MAX12930EASA+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), supporting up to 25Mbps data rate with 1.71V–5.5V dual-supply operation and 50kV/µs CMTI. It transfers signals in the same direction across isolated domains and is used in industrial RS-485 interfaces requiring robust noise immunity and level translation.
For engineers reviewing the MAX12930EASA+T datasheet, MAX12930EASA+T pinout, MAX12930EASA+T application, or MAX12930EASA+T equivalent, this page delivers verified electrical specs, safety-rated insulation parameters, channel-level timing behavior, and real-world isolation use cases - all confirmed against the official MAX12930/MAX12931 datasheet Rev 10 (2021).
Technical Context
The MAX12930EASA+T implements capacitive-based galvanic isolation using Maxim's proprietary process, with two independent unidirectional channels operating between isolated power domains (VDDA/GNDA and VDDB/GNDB). Each channel features push-pull output drivers eliminating external pull-ups and includes refresh circuitry to maintain output state during static input conditions.
It supports default-low output configuration (suffix 'E'), operates across -40°C to +125°C ambient, and meets UL1577 (3kVRMS), CSA Bulletin 5A, and VDE 0884-11 Basic Insulation standards. Its 4mm creepage/clearance and CTI >400 material qualify it for Group II insulation systems per IEC 60112.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 3kVRMS withstand (60s), 445VRMS working voltage - enables safe interface between 24V industrial fieldbus and 3.3V microcontroller domains |
| Data Rate | 25Mbps maximum - sufficient for isolated RS-485 at 10Mbps with margin, supporting deterministic real-time communication |
| Propagation Delay | 17.4ns–32.5ns (tPLH), 16.9ns–33.6ns (tPHL) - ensures sub-35ns channel-to-channel skew for synchronous multi-bit isolation |
| CMTI | 50kV/µs typical - rejects fast common-mode transients from motor drives or switching power supplies without signal corruption |
| Supply Range | 1.71V–5.5V on both sides - allows direct interfacing with 1.8V logic, 3.3V MCU, and 5V peripherals without level shifters |
| Power @ 2Mbps | 1.3mW per channel at 3.3V - reduces thermal load in space-constrained industrial modules with multiple isolators |
| Default Output State | Low ('E' suffix) - ensures fail-safe inactive state on power-up or open-circuit input, critical for safety-critical enable lines |
Pinout & Package
Package: 8-pin narrow-body SOIC (S8MS-22), 4mm creepage/clearance, CTI >400 (Group II), RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VDDA | Side A power supply | Supplies 1.71V–5.5V to input-side logic; requires local 0.1µF ceramic bypass to GNDA |
| 2 - IN1 | Channel 1 input | Accepts CMOS/TTL logic on side A; VIH = 0.7×VDDA, VIL = 0.8V (VDDA ≥2.25V) |
| 3 - IN2 | Channel 2 input | Independent second input; identical electrical specs to IN1; supports parallel digital I/O isolation |
| 4 - GNDA | Side A ground reference | Return path for VDDA and inputs; must be separated from GNDB by isolation barrier |
| 5 - VDDB | Side B power supply | Supplies 1.71V–5.5V to output-side logic; bypass with 0.1µF ceramic to GNDB |
| 6 - OUT1 | Channel 1 output | Push-pull CMOS output; VOH = VDDB – 0.4V, VOL = 0.4V @ 4mA sink/source |
| 7 - OUT2 | Channel 2 output | Independent output; matches OUT1 specs; enables dual-signal isolation (e.g., DIO + CLK) |
| 8 - GNDB | Side B ground reference | Return path for VDDB and outputs; galvanically isolated from GNDA; defines output logic domain |
Key Features
| Feature | Design Value |
|---|---|
| Galvanic Isolation Barrier | 3kVRMS (60s), 445VRMS working voltage, 4200VPK transient rating - certified for reinforced insulation in industrial safety applications |
| Unidirectional Dual Channel | Two independent same-direction channels - ideal for isolating parallel digital signals (e.g., SPI MOSI/MISO or GPIO banks) |
| Low-Power Operation | 0.31mA supply current per side at 1MHz/3.3V - extends battery life in portable test equipment and low-power sensor nodes |
| High CMTI Immunity | 50kV/µs minimum - prevents data corruption in noisy environments like motor control cabinets or PLC backplanes |
| Wide Supply Flexibility | VDDA and VDDB independently configurable from 1.71V to 5.5V - enables seamless level translation between mixed-voltage subsystems |
| Fail-Safe Default Output | Low-state default ('E' variant) - guarantees known output during power sequencing or open-circuit faults, simplifying system safety design |
Applications
| Industrial RS-485 Transceivers | Programmable Logic Controller (PLC) Digital I/O |
|---|---|
Use Scenario: Isolating TX/RX lines between a 3.3V microcontroller and a 5V RS-485 transceiver in factory automation networks. IC Role / Device Role / Timing Role: Unidirectional signal translator and galvanic barrier; maintains signal integrity at 10Mbps with <35ns propagation delay skew. Use Value: Prevents ground loop currents and high-voltage transients from damaging the controller while enabling interoperability across voltage domains. |
Use Scenario: Isolating 24V DC input/output signals from a 3.3V FPGA-based PLC CPU module. IC Role / Device Role / Timing Role: Dual-channel digital isolator for parallel status and control lines; supports DC–25Mbps operation for scan-cycle timing. Use Value: Enables safe, high-speed monitoring of field sensors and actuator commands without shared ground references or external level shifters. |
| Battery Management Systems (BMS) | Medical Patient Monitoring Interfaces |
Use Scenario: Isolating cell voltage measurement data and balancing control signals between high-voltage battery stacks and low-voltage MCU in EV BMS. IC Role / Device Role / Timing Role: Unidirectional data isolator for analog front-end ADC readouts and digital balancing commands; operates at 1.8V/3.3V dual supply. Use Value: Meets reinforced insulation requirements for >600V battery systems while minimizing power draw in always-on monitoring circuits. |
Use Scenario: Isolating ECG/EEG analog front-end digital control lines from patient-connected circuits in bedside monitors. IC Role / Device Role / Timing Role: Safety-certified digital isolator for SPI configuration and status reporting; supports 445VRMS working voltage per IEC 60601-1. Use Value: Provides essential patient protection against leakage currents while maintaining real-time responsiveness for clinical alarms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital isolator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SI8620ED-B-IS | 2-channel, 25Mbps, 3.75kVRMS, 1.7–5.5V supply, default-high output | Higher isolation rating but lacks default-low option; different pinout (SOIC-8, but IN/OUT mapping differs) | Select when higher isolation margin is required and output polarity can be accommodated in firmware or external logic |
| ISO6720EDR | 2-channel, 25Mbps, 3kVRMS, 1.71–5.5V supply, default-low output, 8-pin SOIC | TI device with identical isolation rating and default state; slightly higher propagation delay (max 42ns vs. 33.6ns) | Choose for TI ecosystem alignment or where minor timing margin is acceptable in non-critical paths |
Compared with SI8620ED-B-IS and ISO6720EDR, the MAX12930EASA+T offers tighter propagation delay skew (<2ns channel-to-channel), lower power at 2Mbps (1.3mW vs. ~1.8mW), and VDE 0884-11 certification - making it preferable for timing-sensitive, low-power, and safety-certified industrial designs.
Availability
MAX12930EASA+T is available at Aetrix Electronics and suitable for industrial automation, battery management, and medical monitoring applications requiring stable component supply, long-term lifecycle support, and certified galvanic isolation performance.
Supply support for MAX12930EASA+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.
The MAX12930EASA+T belongs to the MAX12930/MAX12931 family of low-power, high-CMTI digital isolators designed specifically for robust signal isolation in harsh electromagnetic environments - especially where safety certification, wide supply range, and precise timing are critical.
FAQ
What is the isolation voltage rating of the MAX12930EASA+T?
The MAX12930EASA+T is rated for 3kVRMS isolation voltage for 60 seconds (VISO), with a maximum working isolation voltage (VIOWM) of 445VRMS and peak transient rating (VIOTM) of 4200VPK. It is certified to UL1577, CSA Bulletin 5A, and VDE 0884-11 Basic Insulation standards for narrow-body SOIC packages, meeting Group II insulation system requirements per IEC 60112.
Does the MAX12930EASA+T support level shifting between different logic voltages?
Yes, the MAX12930EASA+T supports true bidirectional level shifting: VDDA (1.71V–5.5V) sets the input-side logic levels, and VDDB (1.71V–5.5V) sets the output-side levels. This allows direct interfacing between 1.8V microcontrollers and 5V peripherals without external level translators - a key feature confirmed in the datasheet's "Level-Shifting" section.
What does the 'E' suffix in MAX12930EASA+T indicate?
The 'E' suffix denotes the default output state: low. When either input is unpowered or open-circuited, both OUT1 and OUT2 assume a logic-low state. This fail-safe behavior is critical for safety-critical enable lines or reset signals, and is explicitly defined in the "Ordering Information" section of the MAX12930/MAX12931 datasheet Rev 10.
Can the MAX12930EASA+T be used in a 150Mbps application?
No - the MAX12930EASA+T is the 'B/E' variant, rated for up to 25Mbps. The 150Mbps capability is exclusive to the 'C/F' variants (e.g., MAX12930CASA+T). Attempting to operate the MAX12930EASA+T beyond 25Mbps violates its specified dynamic characteristics, including pulse width distortion and jitter limits, and is not guaranteed by design or testing.
What is the CMTI rating of the MAX12930EASA+T, and why does it matter?
The MAX12930EASA+T has a typical common-mode transient immunity (CMTI) of 50kV/µs. This specification quantifies its ability to reject fast-rising noise on the isolation barrier - such as those induced by motor drives or switch-mode power supplies - without corrupting data. High CMTI ensures reliable operation in electrically noisy industrial settings where lower-rated isolators may glitch or latch up.
MAX12930EASA+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:
- CAN, RS232, RS422, RS485
- Isolated Power:
- No
- Number of Channels:
- 2
- Inputs - Side 1/Side 2:
- 2/0
- Channel Type:
- Unidirectional
- Voltage - Isolation:
- 3000Vrms
- Common Mode Transient Immunity (Min):
- 50kV/µs (Typ)
- Data Rate:
- 25Mbps
- Propagation Delay tpLH / tpHL (Max):
- 32.5ns, 33.6ns
- Pulse Width Distortion (Max):
- 4ns
- 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
MAX12930EASA+T FAQ
1.How can I place an order for MAX12930EASA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX12930EASA+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 MAX12930EASA+T reliable?
The price and inventory of MAX12930EASA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX12930EASA+T is usually 5 days.
3.What payment methods are accepted for MAX12930EASA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX12930EASA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX12930EASA+T?
MAX12930EASA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX12930EASA+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 MAX12930EASA+T?
For technical support, including MAX12930EASA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX12930EASA+T requirements.
6.How does Aetrix verify that MAX12930EASA+T is sourced from the original manufacturer or authorized distributors?
All MAX12930EASA+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 MAX12930EASA+T meets industry standards.
7.What is the process for return or replacement of MAX12930EASA+T?
All MAX12930EASA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX12930EASA+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 MAX12930EASA+T part is unused and in its original packaging.
Return procedure for MAX12930EASA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX12930EASA+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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