ICS85314BGI-01LF datasheet(11/19 Pages) ICST

Part #	ICS85314BGI-01LF

Description	LOW SKEW, 1-TO-5 DIFFERENTIAL-TO-2.5V/3.3V LVPECL FANOUT BUFFER

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Manufacturer	ICST [Integrated Circuit Systems]

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11 / 19 page

85314BGI-01

www.icst.com/products/hiperclocks.html

REV. E SEPTEMBER 23, 2005

11

Integrated

Circuit

Systems, Inc.

ICS85314I-01

LOW SKEW, 1-TO-5

DIFFERENTIAL-TO-2.5V/3.3V LVPECL FANOUT BUFFER

The clock layout topology shown below is a typical termina-

tion for LVPECL outputs. The two different layouts mentioned

are recommended only as guidelines.

FOUT and nFOUT are low impedance follower outputs that gen-

erate ECL/LVPECL compatible outputs. Therefore, terminating

resistors (DC current path to ground) or current sources must

be used for functionality. These outputs are designed to drive

V

CC - 2V

50

Ω

50

Ω

RTT

Z

o = 50Ω

Z

o = 50Ω

FOUT

FIN

RTT =

Z

o

1

((V

OH + VOL) / (VCC – 2)) – 2

3.3V

125

Ω

125

Ω

84

Ω

84

Ω

Z

o = 50Ω

Z

o = 50Ω

FOUT

FIN

50

Ω transmission lines. Matched impedance techniques should

be used to maximize operating frequency and minimize signal

distortion. Figures 4A and 4B show two different layouts which

are recommended only as guidelines. Other suitable clock lay-

outs may exist and it would be recommended that the board

designers simulate to guarantee compatibility across all printed

circuit and clock component process variations.

FIGURE 4B. LVPECL OUTPUT TERMINATION

FIGURE 4A. LVPECL OUTPUT TERMINATION

TERMINATION FOR 3.3V LVPECL OUTPUTS

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Similar Description - ICS85314BGI-01LF

Manufacturer	Part #	Datasheet	Description
Integrated Circuit Syst...	ICS85314-01	112Kb / 15P	LOW SKEW, 1-TO-5 DIFFERENTIAL-TO-2.5V/3.3V LVPECL FANOUT BUFFER
Renesas Technology Corp	85314I-01	473Kb / 21P	Low Skew, 1-to-5 Differential-to-2.5V/3.3V LVPECL Fanout Buffer DECEMBER 19, 2014
Integrated Circuit Syst...	ICS85314I-11	250Kb / 18P	LOW SKEW, 1-TO-5 DIFFERENTIAL-TO-2.5V/3.3V LVPECL FANOUT BUFFER
Renesas Technology Corp	ICS85314I-11	546Kb / 22P	Low Skew, 1-to-5 Differential-to-2.5V, 3.3V LVPECL Fanout Buffer SEPTEMBER 16, 2013
Integrated Circuit Syst...	ICS853014	470Kb / 17P	LOW SKEW, 1-TO-5 2.5V/3.3V DIFFERENTIAL-TO-LVPECL/ECL FANOUT BUFFER
Integrated Device Techn...	ICS853014	1Mb / 19P	LOW SKEW, 1-TO-5, DIFFERENTIAL-TO- 2.5V, 3.3V LVPECL/ECL FANOUT BUFFER
Renesas Technology Corp	ICS853S014I	445Kb / 21P	Low Skew, 1-to-5, Differential-to-2.5V, 3.3V LVPECL/ECL Fanout Buffer MAY 23, 2013
Integrated Circuit Syst...	ICS858012	231Kb / 15P	LOW SKEW, 1-TO-2, DIFFERENTIAL-TO-2.5V, 3.3V LVPECL FANOUT BUFFER
Renesas Technology Corp	ICS853S004I	474Kb / 21P	Low Skew, 1-to-4, Differential-to-2.5V, 3.3V LVPECL Fanout Buffer May 27, 2017
Texas Instruments	LMK00725	1,006Kb / 23P	[Old version datasheet] Low Skew, 1-to-5, Differential-to-3.3V LVPECL Fanout Buffer

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ICS85314BGI-01LF Datasheet(PDF) 11 Page - Integrated Circuit Systems

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