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MAX14931
4-Channel, 1kVRMS, and 2.75kVRMS, Digital Isolators
Industry's Fastest and Most Flexible Digital Isolators Allow Direct Interfacing to Low Voltage (1.8V) Devices
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Key Features
Applications/Uses
Parametric specs for Digital Isolators
| # Channels | 4 |
| Insulation Rating | 2750VRMS |
| # Uni-directional Inputs (Side A) | 3 |
| # Uni-directional Inputs (Side B) | 1 |
| Uni-directional Data Rate (Mbps) (max) | 1 |
| Oper. Temp. (°C) | -40 to +125 |
| Package/Pins | See Data Sheet |
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Simplified Block Diagram
Technical Docs
| Data Sheet | 4-Channel, 1kVRMS, and 2.75kVRMS, Digital Isolators | Jun 17, 2022 | |
| User Guide | MAXREFDES145# 8-Channel IO-Link Master Quick Start Guide | ||
| App Note | Understanding the Safety Certification of Digital Isolators | ||
| User Guide | IO-Link Handbook |
Don’t Worry – Isolate All Those Digital Signals
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
Parameters
Parametric specs for Digital Isolators
| # Channels | 4 |
| Insulation Rating | 2750VRMS |
| # Uni-directional Inputs (Side A) | 3 |
| # Uni-directional Inputs (Side B) | 1 |
| Uni-directional Data Rate (Mbps) (max) | 1 |
| Oper. Temp. (°C) | -40 to +125 |
| Package/Pins | See Data Sheet |
Key Features
- Robust Galvanic Isolation of Digital Signals
- Withstands up to 2.75kVRMS for 60s (VISO) (MAX14930–MAX14932)
- Constinuously Withstands 443VRMS (VIOWM) (MAX14930–MAX14932)
- 630VPK Repetitive Peak Voltage (VIORM) (MAX14930–MAX14932)
- Withstands ±10kV Surge per IEC 61000-4-5
- Interfaces Directly with Most Micros and FPGAs
- Accepts 1.71V to 5.5V Supplies
- Many Options Support Broad Applications
- 3 Data Rates (1Mbps, 25Mbps, 150Mbps)
- 3 Channel Direction Configuration
- 2 Output Default States (High or Low)
- 3 Packages (4mm or 8mm Creepage and Clearance)
- Low Power Consumption at High Data Rates
- At 1.8V:
- 2.5mA per Channel Typical at 1Mbps
- 5.25mA per Channel Typical at 100Mbps
- At 3.3V:
- 2.6mA per Channel Typical at 1Mbps
- 7.1mA per Channel Typical at 100Mbps
- At 1.8V:
Applications/Uses
- Battery Management
- Fieldbus Communications for Industrial Automation
- General Multichannel Isolation Applications
- Isolated SPI, RS-232, RS-485/RS-422
- Medical Systems
Description
The MAX14930–MAX14932 are a family of 4-channel 2.75kVRMS digital isolators utilizing Maxim’s proprietary process technology. The MAX14130–MAX14131 are 4-channel 1kVRMS digital isolators in smaller footprint QSOP packages. For applications requiring 5kVRMS of isolation, see the MAX14934–MAX14936. The MAX14930–MAX14932 family transfers digital signals between circuits with different power domains at ambient temperatures up to +125°C.
The MAX14930–MAX14932 family offers all three possible unidirectional channel configurations to accommodate any 4-channel design; including SPI, RS-232, RS-485, and digital I/O applications. For applications requiring bidirectional channels, such as I2C, see the MAX14933.
Devices are available with data rates from DC up to 1Mbps, 25Mbps, or 150Mbps. Each device is also available in either a default high or default low configuration.The default is the state an output goes to when its input is unpowered. See the Product Selector Guide and Ordering Information for the suffixes associated with each option.
Independent 1.71V to 5.5V supplies on each side of the isolator also make the devices suitable for use as level translators.
The MAX14930–MAX14932 are available in both a 16-pin wide body (10.3mm x 7.5mm) and narrow body (9.9mm x 3.9mm) SOIC package. The MAX14130–MAX14131 are available in a 16-pin (6mm x 5mm) QSOP package. All devices are rated for operation at ambient temperatures of -40°C to +125°C.
The MAX14930–MAX14932 family offers all three possible unidirectional channel configurations to accommodate any 4-channel design; including SPI, RS-232, RS-485, and digital I/O applications. For applications requiring bidirectional channels, such as I2C, see the MAX14933.
Devices are available with data rates from DC up to 1Mbps, 25Mbps, or 150Mbps. Each device is also available in either a default high or default low configuration.The default is the state an output goes to when its input is unpowered. See the Product Selector Guide and Ordering Information for the suffixes associated with each option.
Independent 1.71V to 5.5V supplies on each side of the isolator also make the devices suitable for use as level translators.
The MAX14930–MAX14932 are available in both a 16-pin wide body (10.3mm x 7.5mm) and narrow body (9.9mm x 3.9mm) SOIC package. The MAX14130–MAX14131 are available in a 16-pin (6mm x 5mm) QSOP package. All devices are rated for operation at ambient temperatures of -40°C to +125°C.
Technical Docs
| Data Sheet | 4-Channel, 1kVRMS, and 2.75kVRMS, Digital Isolators | Jun 17, 2022 | |
| User Guide | MAXREFDES145# 8-Channel IO-Link Master Quick Start Guide | ||
| App Note | Understanding the Safety Certification of Digital Isolators | ||
| User Guide | IO-Link Handbook |
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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