8543BGLFT Ver la hoja de datos (PDF) - Integrated Device Technology

Número de pieza

componentes Descripción

Fabricante

8543BGLFT

Low Skew, 1-to-4, Differential-to-LVDS Fanout Buffer

Integrated Device Technology 

Low Skew, 1-to-4,

Differential-to-LVDS Fanout Buffer

ICS8543

General Description

The ICS8543 is a low skew, high performance 1-to-4

Differential-to-LVDS Clock Fanout Buffer. Utilizing Low Voltage

Differential Signaling (LVDS) the ICS8543 provides a low power, low

noise, solution for distributing clock signals over controlled

impedances of 100Ω. The ICS8543 has two selectable clock inputs.

The CLK, nCLK pair can accept most standard differential input

levels. The PCLK, nPCLK pair can accept LVPECL, CML, or SSTL

input levels. The clock enable is internally synchronized to eliminate

runt pulses on the outputs during asynchronous

assertion/deassertion of the clock enable pin.

Guaranteed output and part-to-part skew characteristics make the

ICS8543 ideal for those applications demanding well defined

performance and repeatability.

DATA SHEET

Features

• Four differential LVDS output pairs

• Selectable differential CLK, nCLK or LVPECL clock inputs

• CLK, nCLK pair can accept the following differential input levels:

LVPECL, LVDS, LVHSTL, SSTL, HCSL

• PCLK, nPCLK pair can accept the following differential input

levels: LVPECL, CML, SSTL

• Maximum output frequency: 800MHz

• Translates any single-ended input signals to LVDS levels with

resistor bias on nCLK input

• Additive phase jitter, RMS: 0.164ps (typical)

• Output skew: 40ps (maximum)

• Part-to-part skew: 500ps (maximum)

• Propagation delay: 2.6ns (maximum)

• Full 3.3V supply mode

• 0°C to 70°C ambient operating temperature

• Available in both standard (RoHS 5) and lead-free (RoHS 6)

packages

Block Diagram

CLK_EN Pullup

CLK Pulldown

nCLK Pullup

00

PCLK Pulldown

1

nPCLK Pullup

1

CLK_SEL Pulldown

D

Q

LE

OE Pullup

Q0

nQ0

Q1

nQ1

Q2

nQ2

Q3

nQ3

Pin Assignment

GND 1

CLK_EN 2

CLK_SEL 3

CLK 4

nCLK 5

PCLK 6

nPCLK 7

OE 8

GND 9

VDD 10

20 Q0

19 nQ0

18 VDD

17 Q1

16 nQ1

15 Q2

14 nQ2

13 GND

12 Q3

11 nQ3

ICS8543

20-Lead TSSOP

6.5mm x 4.4mm x 0.925mm

package body

G Package

Top View

ICS8543BG REVISION E DECEMBER 17, 2010

1

©2010 Integrated Device Technology, Inc.

Share Link: