8442AY

www.icst.com/products/hiperclocks.html

REV. C JULY 8, 2004

10

Integrated

Circuit

Systems, Inc.

ICS8442

The schematic of the ICS8442 layout example used in this layout

guideline is shown in

Figure 5A. The ICS8442 recommended PCB

board layout for this example is shown in

Figure 5B. This layout

example is used as a general guideline. The layout in the actual

U1

ICS8442

1

2

3

4

5

6

7

8

17

18

19

20

21

22

23

24

M5

M6

M7

M8

N0

N1

nc

GND

MR

S_CLOCK

S_DATA

S_LOAD

VDDA

nXTAL_SEL

T_CLK

XTAL1

VDDA

VDD

Zo = 50 Ohm

TL1

+

-

R7

10

X1

Zo = 50 Ohm

TL1N

R2

100

R1

100

+

-

C2

C15

0.1u

C14

0.1u

C16

10u

C11

0.01u

Zo = 50 Ohm

TL2

Zo = 50 Ohm

TL2N

C1

system will depend on the selected component types, the den-

sity of the components, the density of the traces, and the stack

up of the P.C. board.