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Details for Texas Instruments


2.5-kVrms isolated bidirectional clock, bidirectional I2C isolator
Buy Directly from Texas Instruments (13901 in Stock)
$2.0000 per unit
Series Information for ISO1540DR - Texas Instruments


  • feature
    3-V to 5.5-V Supply Range
  • feature
    HBM ESD Protection of 4 kV on All Pins; 8 kV on Bus Pins
  • feature
    Isolated Bidirectional, I2 C Compatible, Communication
  • feature
    Open-Drain Outputs With 3.5-mA Side 1 and 35- mA Side 2 Sink Current Capability
  • feature
    Safety-Related Certifications:
  • feature
    Supports up to 1-MHz Operation
  • feature
    u00b150-kV/u00b5s Transient Immunity (Typical)
  • feature
    u201340u00b0C to +125u00b0C Operating Temperature


The ISO1540 and ISO1541 devices are low-power, bidirectional isolators that are compatible with I2C interfaces. These devices have logic input and output buffers that are separated by Texas Instruments Capacitive Isolation technology using a silicon dioxide (SiO2) barrier. When used with isolated power supplies, these devices block high voltages, isolate grounds, and prevent noise currents from entering the local ground and interfering with or damaging sensitive circuitry. This isolation technology provides for function, performance, size, and power consumption advantages when compared to optocouplers. The ISO1540 and ISO1541 devices enable a complete isolated I2C interface to be implemented within a small form factor. The ISO1540 has two isolated bidirectional channels for clock and data lines while the ISO1541 has a bidirectional data and a unidirectional clock channel. The ISO1541 is useful in applications that have a single master while the ISO1540 is suitable for multimaster applications. For applications where clock stretching by the slave is possible, the ISO1540 device should be used. Isolated bidirectional communication is accomplished within these devices by offsetting the low-level output voltage on side 1 to a value greater than the highlevel input voltage on side 1, thus preventing an internal logic latch that otherwise would occur with standard digital isolators.


No. of Channels:
2 Channel
Propagation Delay:
Supply Voltage Min:
Supply Voltage Max:
Interface Case Style:
No. of Pins:
Operating Temperature Min:
Operating Temperature Max:
Product Range:
Automotive Qualification Standard:
RoHS Phthalates Compliant:
MSL 2 - 1 year
No SVHC (27-Jun-2018)

Alternate Descriptions

Avnet America

Low Power Bidirectional I2C Isolator 8-Pin SOIC T/R

Avnet America product

Avnet Europe

Low Power Bidirectional I2C Isolator 8-Pin SOIC T/R

Avnet Europe product

Texas Instruments

2.5-kVrms isolated bidirectional clock, bidirectional I2C isolator

Texas Instruments product