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2011年10月25日,凌力尔特公司推出高噪声裕度缓冲器LTC4313和LTC4315,这两款器件可为I~2C/SMBus/PMBus系统提供电容缓冲和总线扩展能力。随着一根I~2C总线上设备数目的扩大,增加的电容会大幅度地延长上升时间。LTC4313和LTC4315通过总线分段使上述问题得以缓解,并且提供了高逻辑低噪声裕度的额外优势,这得益于其0.3·V_(OC)的保证最小V_(IL)。这使LTC4313和LTC4315能与用于驱动一个高逻辑低输出电压(V_(OL))的非I~2C型设备配合工作。另外,这还允许将多个LTC4313或LTC4315串接起来使用,并改善大型噪声系统中12C通信的
On October 25, 2011, Linear Technology Corporation introduced the LTC4313 and LTC4315, a high noise margin buffer that provides capacitive buffering and bus expansion for I-2C / SMBus / PMBus systems. As the number of devices on an I-2C bus increases, the added capacitance drastically increases the rise time. The LTC4313 and LTC4315 alleviate these problems by bus segmentation and provide the additional advantage of a high logic low noise margin due to their Guaranteed V_ (IL) of 0.3 · V_ (OC). This allows the LTC4313 and LTC4315 to work with non-I2C devices that drive a high logic low output voltage (V_ (OL)). In addition, this also allows multiple LTC4313 or LTC4315 to be used in cascade connection and to improve 12C communication in large noise systems.