ISO1540 - 低功耗、双向 I2C 隔离器

ISO1540是TI德州仪器公司的一款无产品，ISO1540是低功耗、双向 I2C 隔离器，本站介绍了ISO1540的封装应用图解、特点和优点、功能等，并给出了与ISO1540相关的TI元器件型号供参考。

ISO1540 - 低功耗、双向 I2C 隔离器 - 无 - 隔离式I2C - 德州仪器

产品特性

Isolated Bidirectional, I2C Compatible, Communication
Supports up to 1-MHz Operation
3-V to 5.5-V Supply Range
Open-Drain Outputs With 3.5-mA Side 1 and 35-mA Side 2 Sink Current Capability
–40°C to +125°C Operating Temperature
±50-kV/µs Transient Immunity (Typical)
HBM ESD Protection of 4 kV on All Pins; 8 kV on Bus Pins
Safety and Regulatory Approvals
- 4242-VPK Isolation per DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12
- 2500-VRMS Isolation for 1 Minute per UL 1577
- CSA Component Acceptance Notice 5A, IEC 60950-1 and IEC 61010-1 End Equipment Standards
- CQC Basic Insulation per GB4943.1-2011

产品应用

Isolated I2C Buses
SMBus and PMBus Interfaces
Open-Drain Networks
Motor Control Systems
Battery Management
I2C Level Shifting

产品说明

The ISO1540 and ISO1541 devices are low-power, bidirectional isolators that are compatible with I2C interfaces. These devices have their logic input and output buffers separated by TI’s 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 ideally fit for multi-master applications.

Isolated bidirectional communications is accomplished within these devices by offsetting the Side 1 Low-Level Output Voltage to a value greater than the Side 1 High-Level Input Voltage, thus preventing an internal logic latch that otherwise would occur with standard digital isolators.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
ISO1540 ISO1541	SOIC (8)	4.90 mm × 3.91 mm

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