hsdl-3202 ETC-unknow, hsdl-3202 Datasheet - Page 3

• Manufacturer Part Number: hsdl-3202
• Description: Irda Data Power Compliant 115.2 Kb/s Infrared Transceiver
• Manufacturer: ETC-unknow

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/Output Voltage
Input Voltage: TXD, SD
Output Voltage: RXD
Solder Reflow
Temperature Profile
Transceiver I/O Truth Table
The outputs (LED and RXD) are
controlled by the combination of
the TXD and SD (shutdown) 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.
SD
Low
High
3
Caution: The BiCMOS inherent to this design of this component increases the component’s suscep-
tibility 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.
TXD
High
Low
Don’t care
LED
On
Off
Off
Symbol
T
T
V
V
IOV
V
V
S
A
VLED
CC
I
O
CC
Receiver
Don’t care
IrDA signal
No signal
Don’t care
Min.
–40
–25
0
0
0
0
–0.5
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.
See page 12
RXD
Not valid
Low
High
High
Max.
100
85
7
7
7
IOV
IOV
CC
CC
+ 0.5
+ 0.5
Notes
2
3, 4
5
Units
V
V
V
V
V
C
C
Shutdown Mode Notes
When the HSDL-3202 is in Shut-
down Mode (SD pin high), the
part presents different imped-
ances 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 k ) to V
ESD protection diodes to V
Ground are also present.
TXD Pin: Input protection
diodes are present.
VLED Pin: Typical leakage
current of 1.5 nA.
SD Pin: Will draw approximately
10 nA when driven high.
CC
. The
CC
and