ICS85304-01 datasheet(1/13 Pages) ICST

Part #	ICS85304-01

Description	LOW SKEW, 1-TO-5 DIFFERENTIAL-TO-3.3V LVPECL FANOUT BUFFER

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85304AG-01

www.icst.com/products/hiperclocks.html

REV. B JULY 13, 2001

1

Integrated

Circuit

Systems, Inc.

ICS85304-01

LOW SKEW, 1-TO-5

DIFFERENTIAL-TO-3.3V LVPECL FANOUT BUFFER

GENERAL DESCRIPTION

The ICS85304-01 is a low skew, high perfor-

mance 1-to-5 Differential-to-3.3V LVPECL fanout

buffer and a member of the HiPerClockS™ family

of High Performance Clock Solutions from ICS.

The ICS85304-01 has two selectable clock in-

puts. The CLK, nCLK pair can accept most standard differen-

tial input levels. The PCLK, nPCLK pair can accept LVPECL,

CML, or SSTL input levels. The clock enable is internally syn-

chronized to eliminate runt clock pulses on the outputs dur-

ing asynchronous assertion/deassertion of the clock enable

pin.

Guaranteed output and part-to-part skew characteristics

make the ICS85304-01 ideal for those applications

demanding well defined performance and repeatability.

FEATURES

• 5 differential 3.3V LVPECL outputs

• Selectable CLK, nCLK or LVPECL clock inputs

• CLK, nCLK pair can accept the following differential input

levels: LVDS, LVPECL, LVHSTL, SSTL, HCSL

• PCLK, nPCLK supports the following input types:

LVPECL, CML, SSTL

• Maximum output frequency up to 650MHz

• Translates any single-ended input signal to 3.3V LVPECL

levels with resistor bias on nCLK input

• Output skew: 35ps (maximum)

• Part-to-part skew: 150ps (maximum)

• Propagation delay: 2.1ns (maximum)

• 3.3V operating supply

• 0°C to 70°C ambient operating temperature

• Industrial temperature information available upon request

BLOCK DIAGRAM

PIN ASSIGNMENT

Q0

nQ0

Q1

nQ1

Q2

nQ2

Q3

nQ3

Q4

nQ4

1

2

3

4

5

6

7

8

9

10

20

19

18

17

16

15

14

13

12

11

VCC

CLK_EN

VCC

nPCLK

PCLK

VEE

nCLK

CLK

CLK_SEL

VCC

CLK

nCLK

PCLK

nPCLK

Q0

nQ0

Q1

nQ1

Q2

nQ2

Q3

nQ3

Q4

nQ4

0

1

CLK_EN

CLK_SEL

D

Q

LE

HiPerClockS™

,&6

ICS85304-01

20-Lead TSSOP

6.5mm x 4.4mm x 0.92mm Package Body

G Package

Top View

0

1

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