853210AY

www.icst.com/products/hiperclocks.html

REV. A NOVEMBER 12, 2003

9

Integrated

Circuit

Systems, Inc.

ICS853210

Figure 3A and Figure 3B show examples of termination for 2.5V

LVPECL driver. These terminations are equivalent to terminat-

ing 50

Ω to V

ground level. The R3 in

Figure 3B can be eliminated and the

termination is shown in

Figure 3C.

R2

50

Zo = 50 Ohm

VCCO=2.5V

R1

50

Zo = 50 Ohm

+

-

2.5V

2,5V LVPECL

Driv er

VCCO=2.5V

R1

50

R2

50

Zo = 50 Ohm

R3

18

2,5V LVPECL

Driv er

Zo = 50 Ohm

+

-

2.5V

R2

62.5

2.5V

2,5V LVPECL

Driv er

R3

250

Zo = 50 Ohm

Zo = 50 Ohm

R4

62.5

2.5V

+

-

R1

250

VCCO=2.5V