To convert unidirectional signals from 3.3 V to 5 V, you could also use a buffer with TTL-compatible inputs, e.g., SN74AHCT244. (This optimizes for price, not for BOM simplicity.)
If you have unidirectional signals in different directions, the best choice…
Hi Steve,
You may also see the AUP family ( SN74AUP1T34) allowing up to 200ns/V, SN74AXC1T45 up to 100ns/V and the TXU / LXC families (TXU0102 / SN74LXC2T45) with Schmitt-trigger inputs / no slew rate requirements, thanks.
Best Regards,
Michael.
Part Number: SN74LVC2G17 Other Parts Discussed in Thread: TXU0102 , LSF0102 Dear Team,
Could you help to double check the schematic as below?
Many Thanks,
Jimmy
Open-drain outputs have slow rising edges, depending on the value of the pull-up resistors.
Use an actual level shifter like the TXU0102, or a buffer with overvoltage-tolerant inputs like the SN74LVC2G34.
The typical skew is less than 1 ns. There is no…
At 5 V, V T+ is 3.4 V. So 3.3 V signals are not guaranteed to work.
For up-conversion, you need a buffer with lowered input thresholds like the SN74LV1T34, or an actual level shifter like the TXU0102.
No, the TXU has unidirectional channels. It does not work with this SPI variant.
But as far as I can see, you need only one bidirectional signal. So use the SN74AXC1T45, and something like the TXU0102 for the other two signals.