LSF0204-Q1: Propagation Delay Information

Delaney Berger

Intellectual 2475 points

Part Number: LSF0204-Q1

Hi Team,

I have read through some other e2e posts about the propagation delay on the LSF0204-Q1, but would like a bit more info.

A major concern with this part is the large range it shows for the propagation delay.

There is also very little info on how it varies or what the causes are. Is it stable from start up to start up etc...

Some more info:

We have an FPGA running at 1.8V talking to another IC that needs 1.2V logic levels.

Thank you,
Delaney

over 3 years ago

0 Clemens Ladisch over 3 years ago

Guru 316510 points

The LSF is a passive switch. Falling edges are fast, rising edges depend on the pull-up resistor; both are affected by the capacitance of the switch itself and of anything connected to the signal line. The specified values are not very useful because you will not match the test conditions. Also see [FAQ] How do the LSF translators work?

0 Delaney Berger over 3 years ago in reply to Clemens Ladisch

TI__Intellectual 2475 points

Hi Clemens, Thank you!

Best,

Delaney

Logic

Logic forum

LSF0204-Q1: Propagation Delay Information