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Home » NEWEST Products » New by Manufacturer » Texas Instruments » TI ISO1540/41 Low-Power Bidirectional Isolators
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Texas Instruments ISO1540/41 Low-Power Bidirectional Isolators
Texas Instruments ISO1540/41 Low-Power Bidirectional Isolators

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TI ISO1540/41 Low-Power Bidirectional Isolators

Texas Instruments ISO1540 and ISO1541 low-power, bidirectional isolators are compatible with I²C interfaces. These TI devices have their logic input and output buffers separated by TI's Capacitive Isolation technology using a silicon dioxide (SiO2) barrier. When used in conjunction with isolated power supplies, IS01540 and IS1541 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 opto-couplers. The ISO1540 and ISO1541 enable a complete isolated I²C interface to be implemented within a small form factor.

ISO1540 has two isolated bidirectional channels for clock and data lines while ISO1541 has a bidirectional data and a unidirectional clock channel. ISO1541 is useful in applications that have a single master while ISO1540 is ideally fit for multi-master applications.

Features
  • Isolated Bidirectional, I²C Compatible, Communications
  • Supports up to 1 MHz Operation
  • 3-V to 5.5-V Supply Range
  • Number of Channels: 2
  • Insulation Rating (VRMS): 2500
  • Datarate (Mbps): 1
  • Open Drain Outputs with 3.5mA Side 1 and 35mA Side 2 Sink Current Capability
  • -40°C to 125°C Operating Temperature
  • ±50 kV/µs Transient Immunity (Typical)
  • HBM ESD Protection of 4kV on All Pins; 8kV on Bus Pins
Applications
  • Isolated I²C Bus
  • SMBus and PMBus Interfaces
  • Open-drain Networks
  • Motor Control Systems
  • Battery Management
  • I²C Level Shifting
Functional Configuration
Functional Block Diagrams

TI ISO154xEVM Evaluation Module

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TI ISO154xEVM Evaluation Module

TI ISO154xEVM Evaluation Module has been designed to allow the user to evaluate the electrical parameter performance and features of TI's ISO154x family of 3kV I²C isolators, which are based on TI's capacitive isolation technology. ISO154xEVM Evaluation Module provides for the evaluation of ISO1540 and ISO1541.

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  • Texas Instruments
  • Semiconductors|Integrated Circuits|IC-Interface