MAX14934:Four-Channel, 5kVRMS Digital Isolators

Industry's Fastest and Most Flexible Digital Isolator Allow Direct Interfacing to Low Voltage (1.8V) Devices

The MAX14934–MAX14936 are a family of four-channel, 5kVRMS digital isolators utilizing Maxim’s proprietary process technology. For applications requiring 2.75kVRMS of isolation, see the MAX14930–MAX14932. The MAX14934–MAX14936 family transfers digital signals between circuits with different power domains at ambient temperatures up to +125°C. The MAX14934–MAX14936 family offers all three possible unidirectional channel configurations to accommodate any four-channel design, including SPI, RS-232, RS-485, and large digital IO modules. For applications requiring bidirectional channels, such as I?C, refer to the MAX14937. 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 Ordering Information/Selector Guide in the data sheet 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 MAX14934–MAX14936 are available in a 16-pin wide body (10.3mm x 7.5mm) SOIC package. All devices are rated for operation at ambient temperatures of -40°C to +125°C.

Key Features
  • Robust Galvanic Isolation of Digital Signals
    • Withstands 5kVRMS for 60s (VISO)
    • Continuously Withstands 848VRMS (VIOWM)
    • 1200VP Repetitive Peak Voltage (VIORM)
    • 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)
  • 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
MAX14934, MAX14935, MAX14936: Functional Diagram
MAX14934, MAX14935, MAX14936: Functional Diagram
Applications/Uses
  • Battery Management
  • Fieldbus Communications for Industrial Automation
  • General Multichannel Isolation Applications
  • Isolated SPI, RS-232, RS-485/RS-422
  • Medical Systems
DataSheet
titleDownload file
MAX14934-MAX14936?Data SheetMAX14934-MAX14936.pdf
Parametrics
Part NumberUni-directional ChannelsUni-directional InputsUni-directional InputsBi-directional ChannelsInsulation RatingVSUPPLY
(V)
VSUPPLY
(V)
Oper. Temp.
(°C)
Package/PinsBudgetary
Price
Side ASide BminmaxSee Notes
MAX1493444005000 VRMS1.715.5-40 to +125SOIC HYBRID (W)/16$2.79 @1k
MAX1493531SOIC HYBRID (W)/16$2.79 @1k
MAX1493622SOIC HYBRID (W)/16$2.39 @1k
Design kits & evaluation modules
Quality and Environmental Data
Related Products
  • MAX14937:Two Channel, 5kVRMS I2C Isolator
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX14934AAWE+ActiveSOIC HYBRID (W),;16 pin;SOIC H;-40°C to +125°CSee data sheet
MAX14934AAWE+TActiveSOIC HYBRID (W),;16 pin;SOIC H;-40°C to +125°CSee data sheet
MAX14934BAWE+Future ProductSOIC HYBRID (W),;16 pin;SOIC H;-40°C to +125°CSee data sheet
MAX14934BAWE+TFuture ProductSOIC HYBRID (W),;16 pin;SOIC H;-40°C to +125°CSee data sheet
MAX14934CAWE+Future ProductSOIC HYBRID (W),;16 pin;SOIC H;-40°C to +125°CSee data sheet
MAX14934CAWE+TFuture ProductSOIC HYBRID (W),;16 pin;SOIC H;-40°C to +125°CSee data sheet
MAX14934DAWE+ActiveSOIC HYBRID (W),;16 pin;SOIC H;-40°C to +125°CSee data sheet
MAX14934DAWE+TActiveSOIC HYBRID (W),;16 pin;SOIC H;-40°C to +125°CSee data sheet
MAX14934EAWE+ActiveSOIC HYBRID (W),;16 pin;SOIC H;-40°C to +125°CSee data sheet
MAX14934EAWE+TActiveSOIC HYBRID (W),;16 pin;SOIC H;-40°C to +125°CSee data sheet
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX14934FAWE+ActiveSOIC HYBRID (W),;16 pin;SOIC H;-40°C to +125°CSee data sheet
MAX14934FAWE+TActiveSOIC HYBRID (W),;16 pin;SOIC H;-40°C to +125°CSee data sheet
MAX14934-MAX14936.pdf MAX14936
Understanding the Safety Certification of Digital Isolators MAX14936
MAX14934.pdf MAX14934
MAX14934-MAX14936.pdf MAX14936
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