HSDL-3602 查看數據表（PDF） - HP => Agilent Technologies
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HSDL-3602 Datasheet PDF : 25 Pages
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Transceiver Control Truth Table
Mode 0 Mode 1 FIR_SEL
1
0
X
0
0
0
0
1
0
1
1
0
0
0
1
0
1
1
1
1
1
X = Don't Care
RX Function
Shutdown
SIR
SIR
SIR
MIR/FIR
MIR/FIR
MIR/FIR
TX Function
Shutdown
Full Distance Power
2/3 Distance Power
1/3 Distance Power
Full Distance Power
2/3 Distance Power
1/3 Distance Power
Transceiver I/O Truth Table
Transceiver Mode
Active
Active
Active
FIR_SEL
X
0
1
Inputs
TXD
1
0
0
EI
X
High[1]
High[2]
Active
X
Shutdown
X
0
Low
X[4]
Low
X = Don't Care EI = In-Band Infrared Intensity at detector
Notes:
1. In-Band EI ≤ 115.2 kb/s and FIR_SEL = 0.
2. In-Band EI ≥ 0.576 Mb/s and FIR_SEL = 1.
3. Logic Low is a pulsed response. The condition is maintained for duration dependent on the
pattern and strength of the incident intensity.
4. To maintain low shutdown current, TXD needs to be driven high or low and not left floating.
Outputs
LED
On
Off
Off
Off
Not Valid
Recommended Application Circuit Components
Component
Recommended Value
R1
CX1[5]
CX2[6]
2.2 Ω ± 5%, 0.5 Watt, for 2.7 ≤ VCC ≤ 3.3 V operation
2.7 Ω ± 5%, 0.5 Watt, for 3.0 ≤ VCC ≤ 3.6 V operation
0.47 µF ± 20%, X7R Ceramic
6.8 µF ± 20%, Tantalum
Notes:
5. CX1 must be placed within 0.7 cm of the HSDL-3602 to obtain optimum noise immunity.
6. In "HSDL-3602 Functional Block Diagram" on page 3 it is assumed that Vled and VCC share the
same supply voltage and filter capacitors. In case the 2 pins are powered by different supplies
CX2 is applicable for Vled and CX1 for VCC. In environments with noisy power supplies,
including CX2 on the VCC line can enhance supply rejection performance.
RXD
Not Valid
Low[3]
Low[3]
High
Not Valid
3
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