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THVD1550: Enable timing of / RE and DE

Shotaro Sakai
Intellectual 2590 points
Part Number: THVD1550

Hello team,

My customer is developing with THVD1550, and facing an issue. Can you support us?

When / RE and DE are changed at the same time, a miss pulse of 3usec is output from the R.

How many time should be taken to prevent this phenomena?

Best regards,

Shotaro

  • 0
    Guru 262460 points

    This devices goes into standby mode when both driver and receiver are disabled. Waking up from this state indeed takes several microseconds. (See table 7.8 in the datasheet.)

    To prevent missing data, enable the driver at least 22 ns before disabling the receiver, and enable the receiver at least 90 ns before disabling the driver.