5211AI03 datasheet(9/13 Pages) ICST

Il numero della parte	5211AI03

Spiegazioni elettronici	LOW SKEW, 1-TO-2 DIFFERENTIAL-TO-LVHSTL FANOUT BUFFER

PDF	13 Pages

Scroll/Zoom	100%

Produttore elettronici	ICST [Integrated Circuit Systems]

Homepage	http://www.icst.com

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9 / 13 page

85211AMI-03

www.icst.com/products/hiperclocks.html

REV. B APRIL 8, 2003

Integrated

Circuit

Systems, Inc.

ICS85211I-03

LOW SKEW, 1-TO-2

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 7.

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

DD_MAX

- V

OH_MAX

)

Pd_L = (V

OL_MAX

) * (V

DD_MAX

- V

OL_MAX

)

Pd_H = (1.0V/50

Ω) * (3.465V - 1.0V) = 49.3mW

Pd_L = (0.4V (50

Ω) * (3.465V - 0.4V) = 24.52mW

Total Power Dissipation per output pair = Pd_H + Pd_L = 73.82mW

FIGURE 7. LVHSTL DRIVER CIRCUIT AND TERMINATION

OUT

Ω

5211AI03 Scheda tecnica(PDF) 9 Page - Integrated Circuit Systems