TEXAS INSTRUMENTS TCA9517DR 专用接口, I2C, SMBus, I2C总线与SMBus总线系统应用程序, 服务器, 电信, 900 mV, 5.5 V, SOIC, 8 引脚
The is a bidirectional Buffer with level shifting capabilities for I²C and SMBus systems. It provides bidirectional voltage-level translation up-translation/down-translation between low voltages and higher voltages 2.7 to 5.5V in mixed-mode applications. This device enables I²C and SMBus systems to be extended without degradation of performance, even during level shifting. The TCA9517 buffers both the serial data and the serial clock signals on the I²C bus, thus allowing two buses of up to 400pF bus capacitance to be connected in an I²C application. It has two types of drivers: A-side drivers and B-side drivers. All inputs and I/Os are over-voltage tolerant to 5.5 V, even when the device is unpowered VCCB and/or VCCA = 0 V. The type of buffer design on the B-side prevents it from being used in series with devices which use static voltage offset.
Device has limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
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