843021AGI-01

www.icst.com/products/hiperclocks.html

REV. A NOVEMBER 30, 2004

9

Integrated

Circuit

Systems, Inc.

ICS843021I-01

PRELIMINARY

Figure 4 shows an example of ICS843021I-01 application

schematic. In this example, the device is operated at

V

close as possible to the power pin. The input is driven by a

25MHz quartz crystal. For the LVPECL output drivers, only

two termination examples are shown in this schematic.

Additional termination approaches are shown in the LVPECL

Termination Application Note.

R3

50

Zo = 50

Optional Termination

C4

.1uF

C5

.1uF

VCC = 3.3V

Zo = 50 Ohm

OE

R5

133

X1

25MHz

U1

843021I-01

1

2

3

4

8

7

6

5

VCC

XTAL_OUT

XTAL_IN

VEE

Q0

nQO

Vcc

OE

R3

133

R2

50

R1

50

R4

82.5

C2

27pF

Zo = 50

C1

27pF

R6

82.5

Zo = 50 Ohm

+

-

+

-

VCC

18pF

C3

10uF

3.3V