Transceiver I/O Truth Table
Inputs
Outputs
TXD
Light Input to Receiver
SD
LED
RXD
Notes
High
Don’t Care
Low
On
Not Valid
Low
High
Low
Off
Low
1, 2
Low
Low
Low
Off
High
Don’t Care Don’t Care
High
Off
High
Notes:
1. In-band IrDA signals and data rates ≤ 4Mbit/s.
2. RXD logic low is a pulsed response. The condition is maintained for a duration dependent on pattern and strength of the incident intensity.
Caution: The BiCMOS inherent to the design of this component increases the component’s suscepti-
bility to damage from electrostatic discharge (ESD). It is advised that normal static precautions be
taken in handling and assembly of this component to prevent damage and/or degradation, which
may be induced by ESD.
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