ICS8543BG

www.icst.com/products/hiperclocks.html

REV. C MAY 21, 2001

1

Integrated

Circuit

Systems, Inc.

ICS8543

PRELIMINARY

The ICS8543 is a low skew, high performance

1-to-4 clock fanout buffer and a member of

the HiPerClockS™ family of High Performance

Clock Solutions from ICS. Utilizing Low Voltage

Differential Signaling (LVDS) the ICS8543

provides a low power, low noise, solution for distributing clock

signals over controlled impedances of 100

Ω. The ICS8543

accepts any differential input level and translates it to 3.3V

LVDS output levels.

Guaranteed output and part-to-part skew characteristics

make the ICS8543 ideal for those applications demanding

well defined performance and repeatability.

• 4 LVDS outputs

• Designed to meet or exceed the requirements of ANSI

TIA/EIA-644

• Selectable differential HSTL or LVPECL clock inputs

• LVCMOS / LVTTL control inputs

• 3.3V operating supply

• 20 lead TSSOP

• 0°C to 70°C ambient operating temperature

ICS8543

20-Lead TSSOP

G Package

Top View

VEE

CLK_EN

CLK_SEL

HCLK

nHCLK

PCLK

nPCLK

OE

VEE

VDD

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

Q0

nQ0

VDD

Q1

nQ1

Q2

nQ2

VEE

Q3

nQ3

HiPerClockS™

,&6

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.

OE

HCLK

nHCLK

PCLK

nPCLK

Q0

nQ0

Q1

nQ1

Q2

nQ2

Q3

nQ3

0

1

CLK_EN

CLK_SEL

nD

Q

LE