889874AK

www.icst.com/products/hiperclocks.html

REV. A MAY 19, 2004

1

Integrated

Circuit

Systems, Inc.

ICS889874

1:2

PRELIMINARY

The ICS889874 is a high speed 1:2 Differential-

to-LVPECL Buffer/Divider and is a member of

the HiPerClockS ™ family of high performance

clock solutions from ICS. The ICS889874 has

a selectable ÷1, ÷2, ÷4, ÷8, ÷16 output divider,

which allows the device to be used as either a 1:2 fanout

buffer or frequency divider. The clock input has internal

termination resistors, allowing it to interface with several

differential signal types while minimizing the number of

required external components. The device is packaged in

a small, 3mm x 3mm VFQFN package, making it ideal for

use on space-constrained boards.

• 2 LVPECL outputs

• Frequency divide select options: ÷ 1, ÷ 2, ÷4, ÷8, ÷16

• IN, nIN input can accept the following differential input levels:

LVPECL, LVDS, CML

• Output frequency: > 2.5GHz

• Output skew: 5ps (typical)

• Part-to-part skew: TBD

• Additive jitter, RMS: <0.03ps (design target)

• Supply voltage range: (LVPECL), 2.375V to 3.465V

Supply voltage range: (ECL), -3.465V to -2.375V

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

• Pin compatible with SY89874U

HiPerClockS™

ICS

Q0

nQ0

Q1

nQ1

S2

nRESET

IN

V

T

nIN

S0

S1

V

REF_AC

ICS889874

16-Lead VFQFN

3mm x 3mm x 0.95 package body

K Package

Top View

Q0

nQ0

Q1

nQ1

IN

nIN

Enable

MUX

Enable

FF

Decoder

00 ÷2

01 ÷4

10 ÷8

11 ÷16

0

1

1

2

3

4

12

11

10

9

5

6

7

8

16 15 14 13

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.