85354AK

www.icst.com/products/hiperclocks.html

REV. B JUNE 8, 2004

1

Integrated

Circuit

Systems, Inc.

ICS85354

PRELIMINARY

The ICS85354 is a 2:1/1:2 Multiplexer and a mem-

mance clock solutions from ICS.The 2:1 Multiplexer

allows one of 2 inputs to be selected onto one out-

put pin and the 1:2 MUX switches one input to one

of two outputs. This device may be useful for multiplexing multi-

rate Ethernet Phys which have 100Mbit and 1000Mbit transmit/

receive pairs onto an optical SFP module which has a single

trasmit/receive pair. Please refer to the Application Block dia-

gram on page 2 of the data sheet.

The ICS85354 is optimized for applications requiring very high

performance and has a maximum operating frequency in excess

of 2GHz.The device is packaged in a small, 3mm x 3mm VFQFN

package, making it ideal for use on space-constrained boards.

• Dual 2:1/1:2 MUX

• 3 LVPECL outputs

• 3 differential clock inputs

• CLKx pair can accept the following differential input levels:

LVPECL, LVDS, CML

• Maximum output frequency: 3GHz

• Part-to-part skew: 85ps (typical)

• Additive jitter, RMS: 0.03ps (typical)

• Propagation delay: 330ps (typical)

• LVPECL mode operating voltage supply range:

V

• ECL mode operating voltage supply range:

V

• -40°C to 85°C ambient operating temperature

HiPerClockS™

ICS

ICS85354

16-Lead VFQFN

3mm x 3mm x 0.95 package body

K Package

Top View

QB0

nQB0

QB1

nQB1

CLKA0

nCLKA0

CLKA1

nCLKA1

1

2

3

4

12

11

10

9

5

6

7

8

16 15 14 13

0

1

CLK_SELA

CLKA0

nCLKA0

CLKA1

nCLKA1

CLKB

nCLKB

CLK_SELB

QA

nQA

QB0

nQB0

QB1

nQB1

The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on initial

product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice.