ICS8523AI03L datasheet(11/15 Pages) ICST

tên linh kiện	ICS8523AI03L

Giải thích chi tiết về linh kiện	LOW SKEW, 1-TO-4 DIFFERENTIAL-TO-LVHSTL FANOUT BUFFER

PDF	15 Pages

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nhà sản xuất	ICST [Integrated Circuit Systems]

Trang chủ	http://www.icst.com

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11 / 15 page

8523AGI-03

www.icst.com/products/hiperclocks.html

REV. A OCTOBER 5, 2004

Integrated

Circuit

Systems, Inc.

ICS8523I-03

LOW SKEW, 1-TO-4

DIFFERENTIAL-TO-LVHSTL FANOUT BUFFER

3. Calculations and Equations.

The purpose of this section is to derive the power dissipated into the load.

LVHSTL output driver circuit and termination are shown in

Figure 5.

To calculate worst case power dissipation into the load, use the following equations which assume a 50

Ω load.

Pd_H is power dissipation when the output drives high.

Pd_L is the power dissipation when the output drives low.

Pd_H = (V

OH_MAX

) * (V

DDO_MAX

- V

OH_MAX

)

Pd_L = (V

OL_MAX

) * (V

DDO_MAX

- V

OL_MAX

)

Pd_H = (1V/50

Ω) * (2V - 1V) = 20mW

Pd_L = (0.4V/50

Ω) * (2V - 0.4V) = 12.8mW

Total Power Dissipation per output pair = Pd_H + Pd_L = 32.8mW

FIGURE 5. LVHSTL DRIVER CIRCUIT AND TERMINATION

DDO

OUT

Ω

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