Thanks Vivek, Since the wire between MCU and emulator will be more than 1 meter. I believe a buffer/driver is needed, while our launchpad only used isolation without buffer or driver. For this device, do you have any recommendation? Will SN74AXC8T245…
Have you looked at how the internals of an MCU work? You're basically recreating that circuit outside the MCU, so it might be good to use that as a blueprint.
You can using direction controlled level translators like the SN74AVC4T774 or the SN74LVC8T245…
Alessandro,
The high DC drive strength translators are direction controlled like the one I pointed out earlier SN74AVC4T774.
Limiting the DC drive strength is critical to achieving the auto bidirectional feature like TXS or TXB device.
I know that…
The TXB does not work with large loads, and requires very short traces. But I do not know how your customer's board looks like.
SPI actually has unidirection signals, so the most robust solution would be a direction-controlled translator with real buffers…
I would recommend either the SN74AVC4T774 or the SN74AVC4T245. The SN74AVC4T774 has the greatest flexibility, as there are 4 direction control pins so each data line has its own individual direction control pin. The SN74AVC4T245 only has 2 direction control…
Hello Clemens,
The length of the cable is roughly 14 inces, within a micro-coax bundle (... other LVDS signals exist within this cable). The environment is industrial so yes, there will be noise.
These are SPI signals... we've been recommended to…
Hmm, the datasheet does not actually say that EN would affect Vref_A/B in any way, only the I/Os.
It appears the LSF0204 is not designed for partial power-down applications.
The TXB0104 supports partial power-down, but has additional electrical requirements…
In total we are considering the following: Voltage translators & level shifters SN74AXC4T774-Q1 SN74AXC4T245-Q1 SN74AXC4T774 SN74AXCH4T245 SN74LV4T125 SN74AVC4T245-Q1 SN74AVCH4T245-EP SN74AVC4T774 SN74AXC4T245 SN74AVC4T245 SN74AVCH4T245 Buffers, drivers…
hi Clemens and Maier,
thank you for the reply!
actually customer's application scenario is as below: because the SPI trace is too long and have big reflection, they want to get a SPI buffer, and with 40Msps speed, 3.3V. I am promoting SN74AVC4T774,…
