LSF0108-Q1: How much its high level output voltage min is?

Yoshiki Ochi

Part Number: LSF0108-Q1

Hi team,

Could you tell me how much its high level output voltage min is?
I would like to know VCC=3.3V and 5V high level outputs respectively.

In addition, what does "VIK" shown in its electrical characteristics mean?

Regards,
Ochi

over 3 years ago

0 Clemens Ladisch over 3 years ago

Guru 281330 points

This device has open-drain outputs. The high-level output voltage is determined by the pull-up resistor.

VIK describes the clamping diode between GND and the I/O pin. It does not matter for normal operation.

0 Rami Mooti1 over 3 years ago

TI__Mastermind 28088 points

Hello Ochi-san,

The LSF family are passive devices. The I/O pins are not digital so there isn't a VOH value listed. The device uses passive switches which simply turn on when the EN pin is High.
I'd recommend looking at this FAQ
[FAQ] How do the LSF translators work? and The Logic Minute video series we have to learn more about the LSF family and how to properly implement them the device in your system.

VIK is the forward voltage of the clamping diode that connects the I/O pins and GND.

Thanks,
Rami Mooti

Logic

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LSF0108-Q1: How much its high level output voltage min is?