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831724 Datasheet(PDF) 19 Page - Integrated Device Technology

Part # 831724
Description  Differential Clock/Data Multiplexer
PDF  22 Pages
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Manufacturer  IDT [Integrated Device Technology]
Direct Link  http://www.idt.com
Logo IDT - Integrated Device Technology

831724 Datasheet(HTML) 19 Page - Integrated Device Technology

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©2016 Integrated Device Technology, Inc
Revision B November 16, 2016
831724 Datasheet
3. Calculations and Equations.
The purpose of this section is to calculate power dissipation on the IC per HCSL output pair.
HCSL output driver circuit and termination are shown in Figure 5.
Figure 5. HCSL Driver Circuit and Termination
HCSL is a current steering output which sources a maximum of 17mA of current per output. To calculate worst case on-chip power dissipation,
use the following equations which assume a 50
 load to ground.
The highest power dissipation occurs at VDD_MAX.
Power
= (VDD_MAX – VOUT) * IOUT,
since VOUT = IOUT * RL
Power
= (VDD_MAX – IOUT * RL) * IOUT
Power
= (3.6V – 17mA * 50
) * 17mA
Total Power Dissipation per output pair = 46.8mW
VDD
VOUT
RL
50
IC
IOUT = 17mA
RREF =
475
± 1%



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