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Schematic design for review

Nitesh Bhurke
Prodigy 160 points
Other Parts Discussed in Thread: TXU0104, SN74LXC8T245
Hello,
Currently, we are working on the SLE-Smart-IO project consisting of many Texas parts.
I have attached a schematic PDF file of our design for review. We are using the following TI components in it:
1. TPS73718DCQR
2. SN74HC540PWT
3. OPA2192IDGKT
4. TMUX1208RSVR
5. TLV2186IDSGR
6. TPS2003CDRCR
7. TPS26625DRCT
8. INA125UA/2K5
9. TLV07IDR
10. OPA192IDBVR
11. TXB0108DQSR
Please review and provide your valuable feedback as soon as possible.
  • 0
    TI__Guru 71526 points

    Hello Nitesh, 

    Thank you for posting on E2E.  The list of devices covers many Product Groups, and as such, we cannot review the entire schematic.  If you have a question about a specific device, then we can direct that to the correct Product Group.  

    Thank you for understanding. 

    ~Leonard  

  • 0 in reply to LeonardEllis
    Prodigy 160 points

    Hello,

    Can please review the design of the selected section of the following TI parts:
    1.TXB0108DQSR (U65, U66, U67, U69)
    2. TPS2003CDRCR (U26)
    3. TPS73718DCQR (U1)
    4. SN74HC540PWT (U60, U92)
  • 0 in reply to Nitesh Bhurke
    TI__Mastermind 33455 points

    Hi Nitesh,

    Please see below feedback per the TXB0108DQSR (U65, U66, U67, U69):

    • U65: No major concerns. However, note that for A1, A8, B1 and B8; unused I/O ports are recommended to be tied to GND through weak pulldown resistors (>=100kohm). The signals also seem to not be auto-bidirectional and would recommend to use auto-bidirectional devices for only auto-bidirectional signals. I would further recommend taking a look at using two TXU0104 (Or one SN74LXC8T245) for the GPIO application.
    • U66: Please ensure the series resistors used matches the impedance of the lines. Also, similarly to the above; I do not see auto-bidirectional signals. Hence, I would recommend taking a look at using two TXUs for the SPI application.
    • U67 and U69: Please refer to similar recommendations per U65.

    Note that I have also moved the thread to the next team for further feedback on the other devices as well, thanks.

    Best Regards,

    Michael.

  • 0 in reply to Nitesh Bhurke
    TI__Mastermind 18556 points

    Hi Nitesh,

    Please see below feedback per the TPS2003CDCR(U26):

    1, Please make sure have a pull-up for the below signal, just like the 'USB2_OCS_N2'.

    Other is good for me.

    Best Regards,

    Kuno