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THVD1552: DE and /RE of tPZH, tPZL

Shotaro Sakai
Expert 3410 points
Part Number: THVD1552

Hello team,

1. When controlling de and /re with a single signal, should we use /RE = Vcc value?

2. Is it okay to understand that we need to wait at least 4 μs from DE=High to start bit?

Best regards,

Shotaro

  • +1
    Guru 317370 points

    Logic input voltages should be VCC or GND.

    When both driver and receiver are disabled, the device goes into a deeper power-down mode that takes more time to wake up from. But when DE and /RE always have the same voltage, then one part always stays enabled. So in your case, 4 µs is the correct value.