Datasheet > 84321I

84321I

更新时间： 2024-11-04 01:10:47

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
18页	286K
描述
260MHz, Crystal-to-3.3V Differential

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数据手册

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84321I 数据手册

260MHz, Crystal-to-3.3V Differential

LVPECL Clock Synthesizer

84321I

DATA SHEET

GENERAL DESCRIPTION

FEATURES

The 84321I is a general purpose, dual output Crystal-to-3.3V • Dual differential 3.3V LVPECL outputs

Differential LVPECL High Frequency Synthesizer The 84321I

• Selectable crystal oscillator interface

has a selectableTEST_CLK or crystal inputs.TheVCO operates

or LVCMOS/LVTTL TEST_CLK

at a frequency range of 620MHz to 780MHz.TheVCO frequency

is programmed in steps equal to the value of the input

reference or crystal frequency. The VCO and output

frequency can be programmed using the serial or parallel

interfaces to the conﬁ guration logic. The low phase noise

characteristics of the 84321I make it an ideal clock source

for Fibre Channel 1, Fibre Channel 2, 10 Gigabit Fibre

Channel, Gigabit Ethernet and 10 Gigabit Ethernet

applications.

• Output frequency range: 103.3MHz to 260MHz

• Crystal input frequency range: 14MHz to 40MHz

• VCO range: 620MHz to 780MHz

• Parallel or serial interface for programming counter

and output dividers

• RMS period jitter: 3ps (typical)

• RMS phase jitter at 155.52MHz, using a 38.88MHz crystal

(12kHz to 20MHz): 2.5ps (typical)

Phase noise: 155.52MHz

Offset

Noise Power

100Hz ..................-84.1 dBc/Hz

1kHz ................-109.8 dBc/Hz

10kHz ................-126.3 dBc/Hz

100kHz ................-128.7 dBc/Hz

• 3.3V supply voltage

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

• Available in lead-free (RoHS 6) package

• For functional replacement part use 8T49N241

BLOCK DIAGRAM

PIN ASSIGNMENT

32 31 30 29 28 27 26 25

XTAL2

TEST_CLK

XTAL_SEL

V^CCA

84321I

S_LOAD

S_DATA

S_CLOCK

V^EE

10 11 12 13 14 15 16

32-Lead LQFP

7mm x 7mm x 1.4mm package body

Y Package

Top View

84321I REVISION B 11/5/15

12 3 4 5 6 7...18

中文翻译

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