Datasheet

3
Recommended Application Circuit Components
Component Recommended Value Note
C1 1.0 μF1
Absolute Maximum Ratings
For implementations where case to ambient thermal resistance is ≤ 50°C/W.
Parameter Symbol Min. Max. Units
Storage Temperature T
S
-40 100 °C
Operating Temperature T
A
-25 85 °C
LED Supply Voltage V
VLED
-0.5 7 V
Supply Voltage V
CC
-0.5 7 V
Input Voltage: TXD, SD V
I
0V
CC
+ 0.5 V
Output Voltage: RXD V
O
-0.5 V
CC
+ 0.5 V
Solder Reflow
See Reflow Profile, page 19
Temperature Profile
Transceiver I/O Truth Table
The LED and RXD outputs are
controlled by the combination of the
TXD and SD pins and light falling on
the receiver. As shown in the table
below, the transmitter is non-
inverting; the LED is on when the TXD
pin is high and off when TXD is low.
The receiver is inverting; the RXD pin
is low during IrDA signal pulses and
high when the receiver does not see
any light. When shutdown (SD pin
high), the LED is off (the state of the
TXD pin does not matter), and the
RXD pin is pulled high with a weak
internal pullup.
Shutdown Mode Notes
When the HSDL-3201 is in Shutdown
Mode (SD pin high), the part presents
different impedances to the rest of the
circuit than when it is in normal mode.
RXD Pin: This pin is NOT Tri-state.
During shutdown the equivalent circuit
is a weak pullup (
~
300 kΩ) to V
CC
. The
ESD protection diodes to V
CC
and
Ground are also present.
TXD Pin: Input protection diodes are
present.
VLED Pin: Possible leakage current of
1.5 nA.
SD Pin: Will draw approximately 16 nA
when driven high.
Marking Information
The unit is marked with the letter “A”
and “YWWLL” on the shield for front
options where Y is the last digit of the
year, WW is the workweek, and LL is the
lot information. For top options, the
part is marked as “YWW” where Y is the
last digit of the year, and WW is the
workweek.
Ordering Information
Specify the part number followed by
an option number.
HSDL-3201#XXX
There are two options available:
Front Options
#021 Taped and 13” Reel
Packaging, 2500 per reel
Top Options
#008 Taped and 13” Reel
Packaging, 2500 per reel
SD TXD LED Receiver RXD Notes
High On Don’t care Not Valid 2, 3
Low
Low Off
IrDA Signal Low 4, 5
No Signal High
High Don’t care Off Don’t care High 6
Caution:The BiCMOS inherent to this design of this component increases
the component’s susceptibility 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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