HSDL-3209-021 Lite-On Electronics, HSDL-3209-021 Datasheet - Page 14

• 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

Appendix D: Window Designs for HSDL-3209
Optical Port Dimensions for HSDL-3209
To ensure IrDA compliance, some constraints on the
height and width of the window exist. The minimum
dimensions ensure that the IrDA cone angles are met
without vignetting. The maximum dimensions minimize
the effects of stray light. The minimum size corresponds
to a cone angle of 30° and the maximum size corresponds
to a cone angle of 60°.
In the figure above, X is the width of the window, Y is
the height of the window and Z is the distance from the
HSDL-3208 to the back of the window. The distance from
the center of the LED lens to the center of the photodiode
lens, K, is 5.1mm. The equations for computing the win-
dow dimensions are as follows:
X = K + 2*(Z+D)*tanA
Y = 2*(Z+D)*tanA
1
Module Depth (z) mm
1
2
3
4
5
6
7
8
9
OPAQUE MATERIAL
IR Transparent Window
Y
Z
D
A
IR Transparent Window
K
X
11.07
12.22
13.38
14.53
15.69
16.84
18.00
19.15
Max
8.76
9.92
Aperture Width (x, mm)
OPAQUE MATERIAL
10.01
10.55
11.09
11.62
6.80
7.33
7.87
8.41
8.94
9.48
min
The above equations assume that the thickness of the
window is negligible compared to the distance of the
module from the back of the window (Z). If they are
comparable, Z’ replaces Z in the above equation. Z’ is
defined as
Z’=Z+t/n
where ‘t’ is the thickness of the window and ‘n’ is the re-
fractive index of the window material.
The depth of the LED image inside the HSDL-3208, D, is
3.17mm. ‘A’ is the required half angle for viewing. For IrDA
compliance, the minimum is 15° and the maximum is 30°.
Assuming the thickness of the window to be negligible,
the equations result in the following tables and graphs:
10.59
11.74
12.90
14.05
Max
3.66
4.82
5.97
7.12
8.28
9.43
Aperture height (y, mm)
Min
1.70
2.33
2.77
3.31
3.84
4.38
4.91
5.45
5.99
6.52