SN74LVC3G14: Shoot through current

Shota Mago

Part Number: SN74LVC3G14

Hi team,

How much shoot through current will flow in case of Vcc=3.3?

Best regards,

Shota Mago

0 ShreyasRao over 6 years ago

Hi Shota,

The delta Icc spec in the datasheet mentions the shoot through current ( max 500uA) when one of the inputs is not at the rails.

0 Shota Mago over 6 years ago in reply to ShreyasRao

Hi Shreyas-san

Thanks for your quick reply.

Is it okay to flow delta ICC = 500uA(max) continuously?

i.e. Does biasing input at middle of supply damage device?

Best regards,

Shota Mago

0 Clemens Ladisch over 6 years ago in reply to Shota Mago

Guru 327950 points

A voltage near the switching threshold might lead to oscillations and damage the device. See [FAQ] How does a slow or floating input affect a CMOS device?

To avoid this, use a device with Schmitt-trigger inputs. But I'd ask first why the input does not have a valid logic level to begin with.

0 ShreyasRao over 6 years ago in reply to Clemens Ladisch

Please refer to the white paper:

If a level translation is required, consider TTL compatible devices or level translation devices.

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