HSDL-3209-021 Lite-On Electronics, HSDL-3209-021 Datasheet - Page 16

• Manufacturer Part Number: HSDL-3209-021
• Description: Infrared Transceivers IR Transceiver 115Kb/s
• Manufacturer: Lite-On Electronics

Specifications of HSDL-3209-021

• Wavelength: 875 nm, 880 nm
• Continual Data Transmission: 115.2 Kbit/s
• Radiant Intensity: 14 mW/sr
• Half Intensity Angle Degrees: 30 deg to 60 deg
• Pulse Width: 4 ms, 1.6 ms
• Maximum Rise Time: 60 ns, 600 ns
• Maximum Fall Time: 60 ns, 600 ns
• Led Supply Voltage: 0 V to 6.5 V
• Maximum Forward Current: 50 mA
• Operating Voltage: 2.4 V to 3.6 V
• Maximum Operating Temperature: + 70 C
• Minimum Operating Temperature: - 25 C
• Dimensions: 7 mm x 2.8 mm x 1.6 mm
• Data Rate: 115.2kbs (SIR)
• Idle Current, Typ @ 25° C: 100µA
• Link Range, Low Power: 30cm
• Operating Temperature: -25°C ~ 70°C
• Orientation: Side View
• Shutdown: *
• Size: 7mm x 2.8mm x 1.6mm
• Standards: IrPHY 1.4
• Supply Voltage: 2.4 V ~ 3.6 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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http://optodatabook.liteon.com/databook/databook.aspx
Data subject to change. Copyright © 2007 Lite-On Technology Corporation. All rights reserved.
Shape of the Window
From an optics standpoint, the window should be flat.
This ensures that the window will not alter either the
radiation pattern of the LED, or the receive pattern of the
photodiode.
If the window must be curved for mechanical or industrial
design reasons, place the same curve on the back side of
the window that has an identical radius as the front side.
While this will not completely eliminate the lens effect of
the front curved surface, it will significantly reduce the
effects. The amount of change in the radiation pattern is
dependent upon the material chosen for the window, the
Flat Window
(First choice)
1
Curved Front and Back
(Second choice)
WWW.liteon.com or
radius of the front and back curves, and the distance from
the back surface to the transceiver. Once these items are
known, a lens design can be made which will eliminate
the effect of the front surface curve.
The following drawings show the effects of a curved
window on the radiation pattern. In all cases, the center
thickness of the window is 1.5 mm, the window is made
of polycarbonate plastic, and the distance from the trans-
ceiver to the back surface of the window is 3 mm.
Curved Front, Flat Back
(Do not use)