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831742AGILF Fiches technique(PDF) 16 Page - Integrated Device Technology

No de pièce 831742AGILF
Description  4:2 Differential Clock/Data Multiplexer
PDF  20 Pages
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Fabricant  IDT [Integrated Device Technology]
Site Internet  http://www.idt.com
Logo IDT - Integrated Device Technology

831742AGILF Fiches technique(HTML) 16 Page - Integrated Device Technology

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©2016 Integrated Device Technology, Inc
April 5, 2016
831742I Data Sheet
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 4.
Figure 4. 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 when VDD_MAX.
Power = (VDD_MAX – VOUT) * IOUT,
since VOUT = IOUT * RL
= (VDD_MAX – IOUT * RL) * IOUT
= (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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