SN74LV165A: whether the device SN74LV165A can stand input -1.52v for 2ns

Frank Xiao

Genius 12055 points

Part Number: SN74LV165A

Hi team,

whether the device can stand input -1.52v for 2ns? Does it have risks? How we can decide the voltage and time can stand of the SN74LV165A? Thanks.

over 5 years ago

0 Dylan Hubbard over 5 years ago

TI__Mastermind 42670 points

Hi Frank,

It does have risks for this to happen. The abs max table of the datasheet gives more insight into this see below:

If you go below the min input voltage the current needs to be monitored to stay under the input clamp current. Using a current limiting resistor, this can be resolved.

0 Frank Xiao over 5 years ago in reply to Dylan Hubbard

TI__Genius 12055 points

Hi Dylan,

if we can limit the current lower than 20ma, whether it still have risks?

thanks.

0 Dylan Hubbard over 5 years ago in reply to Frank Xiao

TI__Mastermind 42670 points

Hi Frank,

I would limit it to 10 mA if you can, that way you don't stress the part as much. There's always risk to operating the parts near the absolute maximum spec. See note 1 in the image I sent before.

Logic

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SN74LV165A: whether the device SN74LV165A can stand input -1.52v for 2ns