3
Recommended Application Circuit Components
Component
C1
Recommended Value
1.0
µF
Note
1
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.
Absolute Maximum Ratings
For implementations where case to ambient thermal resistance is
≤
50°C/W.
Parameter
Storage Temperature
Operating Temperature
LED Supply Voltage
Supply Voltage
Input Voltage: TXD, SD
Output Voltage: RXD
Solder Reflow
Temperature Profile
Symbol
T
S
T
A
V
VLED
V
CC
V
I
V
O
Min.
-40
-25
-0.5
-0.5
0
-0.5
Max.
100
85
7
7
V
CC
+ 0.5
V
CC
+ 0.5
Units
°C
°C
V
V
V
V
See Reflow Profile, page 19
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
SD
Low
High
TXD
High
Low
Don’t care
LED
On
Off
Off
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.
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.
Receiver
Don’t care
IrDA Signal
No Signal
Don’t care
RXD
Not Valid
Low
High
High
Notes
2, 3
4, 5
6
Ordering Information
Specify the part number followed
by an option number.
HSDL-3201#XXX
There are five options available:
Front Options
Taped in a short strip
(no reel), 10 per strip
Taped and 7” Reel
Packaging, 500 per reel
Taped and 13” Reel
Packaging, 2500 per reel
Top Options
Taped in a short strip
(no reel), 10 per strip
Taped and 13” Reel
Packaging, 2500 per reel
#011
#001
#021
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.
#018
#008
AGILENT [ AGILENT TECHNOLOGIES, LTD. ]
