85105AGIT

更新时间： 2024-02-26 01:11:19

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
16页	302K
描述
LOW SKEW, 1-TO-5, DIFFERENTIAL/LVCMOS-TO-0.7V HCSL FANOUT BUFFER

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85105AGIT 数据手册

ICS85105I

LOW SKEW, 1-TO-5, DIFFERENTIAL/LVCMOS-TO-0.7V HCSL FANOUT BUFFER

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.

I_OUT= 17mA

V_OUT

R_REF

475Ω

1ꢀ

R_L

50Ω

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 50Ω load to ground.

The highest power dissipation occurs when V is HIGH.

Power = (V

– V ) * I since V = I * R

OUT, L

OUT OUT OUT

DD_HIGH

= (V

– I * R ) * I

DD_HIGH

OUT

= (3.63V – 17mA * 50Ω) * 17mA

Total Power Dissipation per output pair = 47.3mW

IDT^™/ ICS^™0.7V HCSL FANOUT BUFFER

ICS85105AGI REV. A JUNE 5, 2008

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