HSDL-3021-021 Avago Technologies US Inc., HSDL-3021-021 Datasheet - Page 23

• Manufacturer Part Number: HSDL-3021-021
• Description: Infrared Transceivers FIR + RC
• Manufacturer: Avago Technologies US Inc.

Specifications of HSDL-3021-021

• Wavelength: 885 nm
• Continual Data Transmission: 4 Mbit/s
• Transmission Distance: 50 cm
• Radiant Intensity: 4 mW/sr
• Half Intensity Angle Degrees: 30 deg
• Pulse Width: 4 us, 1.6 us
• Maximum Rise Time: 40 ns, 600 ns
• Maximum Fall Time: 40 ns, 600 ns
• Led Supply Voltage: 0 V to 6.5 V
• Operating Voltage: 2.4 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 25 C
• Dimensions: 8 mm x 3 mm x 2.5 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

23
Appendix E: General Application
Guide for the HSDL-3021
Remote Control Drive Modes
The HSDL-3021 can operate in
the single-TxD programmable
mode or the two-TxD direct
transmission mode.
Single-TxD Programmable Mode
In the single-TxD programmable
mode, only one input pin (TxD_IR
input pin) is used to drive the
(ACTIVE HIGH)
(ACTIVE HIGH)
Mode Programming Timing Table
Parameter
The following timings describe input constraints required using the active serial interface for mode programming with pins
SD, TxIR, and TxRC:
Shutdown Input Pulse Width,
at Pin SD
SD Mode Setup Time
TxIR Pulse Width for RC Mode
SD Programming Pulse Width
Note: ( t
TxIR Setup Time for
SIR or MIR/FIR Mode
TxIR or SD Hold Time to Latch
SIR, MIR/FIR or RC Mode
SHUTDOWN
(GND)
TxRC
TxIR
A
+ t
SHUTDOWN
B
) < t
C
< t
t
TL
SDPW
IrDA LED
DRIVE
• • •
t
t
Symbol
t
t
t
t
SDPW
A
B
C
S
H
t
A
MODE
RC
t
t
C
B
LED in both IrDA mode as well as
Remote Control mode of
operation. This mode can be used
when the external controller uses
only one transmit pin for both
IrDA as well RC mode of
operation.
The transceiver is in default mode
(IrDA-SIR) when powered up. The
user needs to apply the following
programming sequence to both
Min
30
200
200
-
50
50
t
H
RC LED
DRIVE
t
• • •
H
Typ
-
-
-
-
-
-
RESET
t
Max
-
-
5.0
-
-
C
IrDA LED
t
• • •
DRIVE
H
Unit
ns
ns
ns
ns
s
s
Notes
Will activate complete shutdown
Setup for mode programming
RC drive enabled with pin TxIR
Pulse width mode programming
Setup time for IrDA bandwidth selection
Hold time for IrDA or RC modes
the TxD_IR and SD inputs to
enable the transceiver to operate
in either the IrDA or remote
control mode.