853013AM

www.icst.com/products/hiperclocks.html

REV. A OCTOBER 19, 2005

9

Integrated

Circuit

Systems, Inc.

ICS853013

The PCLKx /nPCLKx accepts LVPECL, CML, SSTL and other

differential signals. Both V

and V

Figures 2A to 2E show inter-

face examples for the HiPerClockS PCLKx/nPCLKx input

driven by the most common driver types. The input interfaces

suggested here are examples only. If the driver is from an-

other vendor, use their termination recommendation. Please

consult with the vendor of the driver component to confirm

the driver termination requirements.

BY A

BY AN

BY A

BY A

HiPerClockS

PCLK

nPCLK

PCLK/nPCLK

3.3V

R2

50

R1

50

3.3V

Zo = 50 Ohm

CML

3.3V

Zo = 50 Ohm

PCLK/nPCLK

2.5V

Zo = 60 Ohm

SSTL

HiPerClockS

PCLK

nPCLK

R2

120

3.3V

R3

120

Zo = 60 Ohm

R1

120

R4

120

2.5V

BY A

3.3V

R5

100 - 200

3.3V

3.3V

HiPerClockS

PCLK

nPCLK

R1

125

PCLK/nPCLK

R2

125

R3

84

C1

C2

Zo = 50 Ohm

R4

84

Zo = 50 Ohm

R6

100 - 200

3.3V LVPECL

3.3V

HiPerClockS

PCLK

nPCLK

R2

84

R3

125

Input

Zo = 50 Ohm

R4

125

R1

84

LVPECL

3.3V

3.3V

Zo = 50 Ohm

C2

R2

1K

R5

100

Zo = 50 Ohm

3.3V

3.3V

C1

R3

1K

LVDS

R4

1K

HiPerClockS

PCLK

nPCLK

R1

1K

Zo = 50 Ohm

3.3V

PC L K /n PC LK