831742AGILF datasheet(16/20 Pages) IDT

Part #	831742AGILF

Description	4:2 Differential Clock/Data Multiplexer

PDF	20 Pages

Scroll/Zoom	100%

Manufacturer	IDT [Integrated Device Technology]

Direct Link	http://www.idt.com

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16 / 20 page

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



IOUT = 17mA

RREF =

475

 ± 1%

831742AGILF Datasheet(PDF) 16 Page - Integrated Device Technology