SN74LVC244A: Part Differences

Kyle Mehringer

Intellectual 1970 points

Part Number: SN74LVC244A

Hello,

What is the difference between SN74LVCH244APWR and SN74LVC244APWR? I only see an additional package of the SN74LVC244APWR, but don't see differences otherwise. Could you please share any other differences?

Thank you,

Kyle Mehringer

over 2 years ago

0 Clemens Ladisch over 2 years ago

Guru 320660 points

The H indicates bus-hold inputs. The datasheet says:

Active bus-hold circuitry holds unused or undriven inputs at a valid logic state. Use of pullup or pulldown resistors with the bus-hold circuitry is not recommended.

Note the I_I(hold) specification. See the An Overview of Bus-Hold Circuit and the Applications application report.

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SN74LVC244A: Part Differences