5

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.