Texas Instruments ISO154x/-Q1 Low-Power Bidirectional Isolators
Texas Instruments ISO154x/ISO154x-Q1 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, IS0154x/ISO154x-Q1 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 ISO154x/ISO154x-Q1 enable a complete isolated I²C interface to be implemented within a small form factor. ISO1540/-Q1 has two isolated bidirectional channels for clock and data lines while ISO1541/-Q1 has a bidirectional data and a unidirectional clock channel. ISO1541/-Q1 is useful in applications that have a single master while ISO1540/-Q1 is ideally fit for multi-master applications. The ISO154x-Q1 devices are AEC-Q100 qualified for automotive applications.
Features
- Isolated Bidirectional, I2C Compatible, Communications
- Supports up to 1MHz Operation
- 3V to 5.5V 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
- ±50kV/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
Development Tools
Texas Instruments TPS23523EVM-863 Evaluation Module (EVM)
Contains evaluation with reference circuitry for the TPS23523.
Texas Instruments MSP-ISO Isolation Adapter Board
Module that offers galvanic isolation between the Debug and Target circuits for MSP430 LaunchPad.
ISO154xEVM Evaluation Module
Texas Instruments 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.