TXV0108: Looking for the output channel-to-channel skew of 1.5V<->1.8V and 1.8V<->1.5V translation

Shunsuke Yamamoto

Part Number: TXV0108
Other Parts Discussed in Thread: SN74AUC244

Tool/software:

Hi team,

My customer plans to use TXV0108 for the level translation of 1.5V<->1.8V and 1.8V<->1.5V. Output channel-to-channel skew of them are not stated on the datasheet, so could you please kindly let me know the output channel-to-channel skew of 1.5V<->1.8V and 1.5V<->1.8V. Both min/max value or typical value are acceptable.

Best regards,

Shunsuke Yamamoto

1 day ago

0 Shunsuke Yamamoto 22 hours ago

TI__Expert 6226 points

Hi Team,

Could you please kindly check the propagation delay of 1.5V<->1.8V and 1.8V<->1.5V translation as well? sorry for asking a lot.

Best regards,

Shunsuke Yamamoto

0 Clemens Ladisch 16 hours ago

Guru 284570 points

Apparently, this device is not really intended for supplies below 1.8 V.

A difference of 0.3 V is small enough that you can use a plain buffer like the SN74AUC244, which is much faster than the TXV at low voltages. (Skew is likely to be smaller, too, but is not specified.)

0 Joshua Salinas 8 hours ago in reply to Shunsuke Yamamoto

TI__Genius 10790 points

Hello Yamamoto-san,

What protocol is the customer trying to interface with and what's the data rate? The TXV family can support voltages less than 1.8V however the target interface for this part is RGMII.

Regards,

Josh

0 Shunsuke Yamamoto 2 hours ago in reply to Joshua Salinas

TI__Expert 6226 points

Hi Josh,

My customer mentioned that 100M DDR. I am looking forward to your answer.

Best regards,

Shunsuke Yamamoto

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TXV0108: Looking for the output channel-to-channel skew of 1.5V<->1.8V and 1.8V<->1.5V translation