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.
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
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
letters “A” and the datecode
“YWW” on the shield for front
options. 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 five options available:
Front Options
#011 Taped in a short strip
(no reel), 10 per strip
#001 Taped and 7” Reel
Packaging, 500 per reel
#021 Taped and 13” Reel
Packaging, 2500 per reel
Top Options
#018 Taped in a short strip
(no reel), 10 per strip
#008 Taped and 13” Reel
Packaging, 2500 per reel
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.