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https://e2e.ti.com/support/clock-timing-group/clock-and-timing/f/clock-timing-forum/820489/na555-is-it-possible-to-generate-400khz-frequency
是否可以使用 NA555计时器 IC 生成400kHz 频率，以及如果我想使用该频率来驱动超声波传感器驱动器 IC，该频率的精确度如何。
您好 Harish、
如您在数据表的第8.1节中所见。 此器件的建议工作频率范围为1MHz 至100kHz。
此致、
Bala Ravi
