SN74CB3T3257: Similar Switch with Translate Up from 2.5V to 3.3V

Cassidy

Part Number: SN74CB3T3257
Other Parts Discussed in Thread: SN74AVC8T245, SN74CB3Q3257

The SN74CB3T3257 can translate from 3.3V to 2.5V is there a multiplexer with similar delay propagation (under 1ns max) that can translate from 2.5V to 3.3V???

over 7 years ago

0 Fan.Wang over 7 years ago

TI__Intellectual 2900 points

Hi Cassidy,

Here I am assuming you have 8 bits data in 2.5V domain. Not only do you want to translate them to 3.3V domain, but you also want to mux them out as 4 bit output. I am also assuming the bandwidth is required about or slightly higher than 100MHz

SN74AVC8T245(2.5V to 3.3V level shifting) + SN74CB3Q3257 (500MHz mux)

0 Adam Torma over 7 years ago in reply to Fan.Wang

TI__Mastermind 45495 points

Hi Cassidy,

We haven’t heard back from you, I’m assuming you were able to resolve your issue. If not, just post a reply below (or create a new thread if the thread has locked due to time-out) –

Thank you,
Adam

0 Cassidy over 7 years ago in reply to Adam Torma

TI__Prodigy 590 points

The device is the closest to what is needed, however the delay is still too large. We went with a passive translation device (LSF device)

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SN74CB3T3257: Similar Switch with Translate Up from 2.5V to 3.3V