ZHCSCE2I October 2013 – March 2022 BQ76920 , BQ76930 , BQ76940
PRODMIX
The ALERT pin is an input and output. The input is sensitive to noise and may benefit from a RC filter at the pin to reduce noise at the pin. A maximum 250-μs time constant is suggested to allow the pin to fall when it is cleared as an output before it is sampled as an input. 500-kΩ and 470-pF values are commonly recommended. Guard traces around the traces may be helpful to avoid crosstalk to the ALERT trace.