HSDL-3602 View Datasheet(PDF) - Avago Technologies
Part Name
Description
MFG CO.
'HSDL-3602' PDF : 27 Pages View PDF
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
Inputs
Outputs
Transceiver Mode FIR_SEL
TXD
EI
LED
RXD
Active
X
1
X
On
Not Valid
Active
0
0
High[1]
Off
Low[3]
Active
1
0
High[2]
Off
Low[3]
Active
X
Shutdown
X
0
Low
Off
High
X[4]
Low
Not Valid
Not Valid
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.
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 1 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.
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