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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.TOSHIBA is not responsible for any incorrect or incomplete information. Information is subject to change at any time without notice.
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东芝拥有一系列可转换各种电压电平的双电源电平转换总线开关产品。
您可从产品线中选择所需的电路配置(SPST、SPDT等)和电路数量。
该产品组具有类似于简易型开关的配置,不具备驱动能力,但适用于高速信号传输。
东芝还拥有双电源总线缓冲器产品线,这类产品具有驱动能力,可用作电平转换器。
产品类别 | 产品名称 |
电路数 | 封装 | VCCA(V) | VCCB(V) | 输入/输出特性 (升压转换)(VOHU) |
电压转换范围(V) | 供电电压条件 | tPLZ/tPZL(ns) @Ta=85℃ | |
---|---|---|---|---|---|---|---|---|---|---|
双电源电平转换总线开关 | TC7MPB9307 | SPST | 8 | TSSOP/US | 1.65至5.0 | 2.3至5.5 | 1.4@VCCA=1.65 2.05@VCCA=2.3 2.7@VCCA=3.0 |
1.4→5.5(A→B) 5.5→1.65(B→A) |
VCCA<VCCB | VCCA=3.3±0.3,VCCB=5±0.5 11/9 @RL=1kΩ,CL=30pF VCCA=2.5±0.2, VCCB=5±0.5 15/13 @RL=1kΩ,CL=30pF |
TC7MPB9326 | SPDT | 2 | ||||||||
TC7MPB9327 | ||||||||||
TC7QPB9306 | SPST | 4 | ||||||||
TC7QPB9307 | ||||||||||
TC7WPB9306 | 2 | US8 | ||||||||
TC7WPB9307 | 2 | |||||||||
TC7SPB9306 | 1 | UF6 | ||||||||
TC7SPB9307 | 1 |
这是一款双电源电平转换总线开关产品,通过外部上拉电阻器进行电平转换。
由于这是一款总线开关,因此可用作两个电源之间的接口,无需进行信号方向控制(无DIR控制)。
本产品可用于I2C通信。
可提供单刀单掷(SPST)和单刀双掷(SPDT)产品。
必须用于具有VCCA<VCCB电位差的系统。
双电源电平转换总线开关(2位)
(TC7WPB9306FK/TC7WPB9307FK)
当主控设备的电源电压从3.3V降至1.8V时,主控设备的输出(SCL/SDA)电压(VOUT)低于从设备的输入阈值(VIH),从而导致故障。
此外,从设备的输出(SDA)电压会超过主控设备的电源电压,从而可能损坏主控设备。
在此种情况下,您可在二者之间放置一个电平转换器,以轻松转换信号电平。
在上述情况下,TC7WPB9306(SDA、SCL)均为一个很好的选择。需利用外部上拉电阻(约1kΩ)将输出提升至电源电压。