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ISO7421 transmission distance

Ryuji
Guru 20090 points
Other Parts Discussed in Thread: ISO7421

Hello,

Could you please let me know the maximum board to board communication transmission distance by ISO7421?
Data rate is 100kbps(UART signal), Vcc1 = Vcc2 = 5V.

Best Regards,
Ryuji Asaka

  • 0
    TI__Intellectual 1815 points
    Hi,
    The transmission distance can be of any length as long as the capacitive load on the output is <15pF. The device will work with more cap loading, but then there will be degradation in timing parameters like propagation delay ,rise/ fall times, pwd. The device output pins can source/sink 4mA current which will determine the propagation delay and rise/fall time for the capacitive load.
    Regards,
    Sarangan Valavan