HSDL-3020-021 Lite-On Electronics, HSDL-3020-021 Datasheet - Page 22

• Manufacturer Part Number: HSDL-3020-021
• Description: Infrared Transceivers IR Transceiver 4.0Mb/s
• Manufacturer: Lite-On Electronics

Specifications of HSDL-3020-021

• Wavelength: 875 nm
• Continual Data Transmission: 4 Mbit/s
• Transmission Distance: 50 cm
• Radiant Intensity: 10 mW/sr
• Half Intensity Angle Degrees: 30 deg to 60 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
• Maximum Forward Current: 190 mA
• Operating Voltage: 2.4 V to 3.6 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 25 C
• Dimensions: 10.4 mm x 2.95 mm x 2.5 mm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Appendix E: General Application Guide for the HSDL-3020
Remote Control Drive Modes
The HSDL-3020 can operate in the single-TxD program-
mable 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 turn on the remote con-
trol (940 nm) LED while the TxD_RC input pin is ground-
ed.
The transceiver is in default mode (IrDA-SIR) when pow-
ered up. The user needs to apply the following program-
ming sequence to both the TxD_IR and SD inputs to
enable the transceiver to operate in either the IrDA or
remote control mode.
(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
22
SHUTDOWN
(GND)
TxRC
TxIR
A
+ t
SHUTDOWN
B
) < t
C
< t
t
SDPW
TL
IrDA LED
DRIVE
• • •
Symbol
t
t
t
t
t
t
SDPW
A
B
C
S
H
t
A
MODE
RC
t
t
C
B
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
µs
ns
ns
µs
ns
ns
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