TXS0104V: Can this be TXS0104V used as bidirectional

Part Number: TXS0104V
Other Parts Discussed in Thread: TXS0104E, LSF0204

I am working on a design where PCI signals (5 V logic) need to interface with an FPGA that operates at 3.3 V. Below is the block diagram for reference:

I plan to place an LVT (Low Voltage TTL) level translator between the PCI connector and the PCI bridge. Some of these signals are bidirectional on the same pin. Here FPGA is slave and direction cannot be controlled by FPGA

Questions:

  • Which TI LVT device would be suitable for this application?
  • Is there any possibility to control the direction in hardware for bidirectional signals?
  • Any recommendations for multi-bit translators that can handle PCI bus speed (33 MHz) and push-pull signaling?

Thanks in advance for your suggestions!

  • Hello Nishalini,

    We are looking into this and will respond soon. Thanks!

    Regards,

    Josh

  • Hello,

    Can you confirm if the signals requiring level shifting are push-pull driver based, or open drain based? This will help to narrow down the recommendation. If the signals requiring translation is push-pull based, there are direction controlled level shifters that utilize hardware to configure the direction of the signal flow per channel, such as the AXC4T774/ AXC4T245. Otherwise for open drain support, TXS0104E/ LSF0204 can be used here, though additional design considerations should be made to accommodate for the 33MHz. 

    Regards,

    Jack