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TUSB8041-Q1: 关于TUSB8041-Q1 datasheet中的100小时的意思

伟 胡
Prodigy 20 points

Part Number: TUSB8041-Q1
Other Parts Discussed in Thread: TUSB8041

您好！TUSB8041-Q1 datasheet第15页8.3.7章节有如下说法：

Bus contention while VDD33 is powered up must be limited to 100 hours over the projected life-time of the device.

这句话应如何理解？意思是每隔100小时要重新给芯片来一次上电吗？

谢谢！

  • 0
    TI__Guru**** 295050 points

    您好，数据手册上有介绍：如果满足所有这些限制条件（其中一个条件条件即为上述100小时），则 VDD 或 VDD33电源可能会无限期加电，而另一个电源则不会加电。

    The TUSB8041-Q1 does not have specific power sequencing requirements with respect to the core power (VDD) or I/O and analog power (VDD33). The core power (VDD) or I/O power (VDD33) may be powered up for an indefinite period of time while the other is not powered up if all of these constraints are met:

    所以Bus contention while VDD33 is powered up must be limited to 100 hours over the projected life-time of the device.这句话翻译过来就是：

    VDD33加电时的总线争用必须在器件的预计使用寿命内限制为100小时，换句话说，在TUSB8041的预计使用寿命内，VDD33的加电时间限制为100小时。