Datasheet > 840N051BGILFT

840N051BGILFT

更新时间： 2024-02-21 06:42:22

品牌	Logo	应用领域
艾迪悌 - IDT		/
页数	文件大小	规格书
14页	255K
描述
FemtoClock NG Crystal-to-LVCMOS/LVTTL Clock Synthesizer

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840N051BGILFT 数据手册

FemtoClock^®NG Crystal-to-LVCMOS/LVTTL ICS840N051I

Clock Synthesizer

DATASHEET

General Description

Features

The ICS840N051I is a LVCMOS/LVTTL clock synthesizer designed

for SDH/SONET and Ethernet applications. The device generates a

selectable 155.52MHz or 77.76MHz clock signal with excellent

phase jitter performance. The device uses IDT’s fourth generation

FemtoClock^®NG technology for an optimum of high clock frequency,

low phase noise performance and low power consumption.The

device supports 2.5V or 3.3V voltage supply and is packaged in a

small, lead-free (RoHS 6) 8-lead TSSOP package. The extended

temperature range supports wireless infrastructure,

• Fourth generation FemtoClock^®NG technology

• 155.52MHz output clock synthesized from a 19.44MHz

fundamental mode crystal

• One 2.5V or 3.3V LVCMOS/LVTTL clock output

• Crystal interface designed for a 12pF parallel resonant crystal

• RMS phase jitter @ 155.52MHz, using a 19.44MHz crystal

(12kHz - 20MHz): 0.482ps (maximum)

• RMS phase jitter @ 156.25MHz, using a 19.53125MHz crystal

(1.875MHz - 20MHz): 0.138ps (maximum)

telecommunication and networking end equipment requirements.

• LVCMOS interface levels for the control inputs

• Full 2.5V or 3.3V supply voltage

• Lead-free (RoHS 6) packaging

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

OE Function Table

Input

Output Enable

Output Q is disabled in high-impedance state

Output Q is enabled.

1 (default)

NOTE: OE is an asynchronous control

FREQ_SEL Frequency Table

Input

Output Frequency

f_XTAL= 19.44MHz

155.52MHz

FREQ_SEL

0 (default)

_XTAL= 19.2MHz

f_XTAL= 19.53125MHz

156.25MHz

153.6MHz

76.8MHz

77.76MHz

78.125MHz

NOTE: FREQ_SEL is an asynchronous control.

Block Diagram

Pin Assignment

XTAL_IN

FemtoClock^®NG

VCO

490-637.5MHz

VDDA

XTAL_OUT

XTAL_IN

VDD

GND

FREQ_SEL

PFD

LPF

÷4,

÷8

OSC

XTAL_OUT

ICS840N051I

8-lead TSSOP

÷32

4.40mm x 3.0mm x 0.925mm

package body

Pulldown

Pullup

FREQ_SEL

G Package

Top View

ICS840N051BGI REVISION A OCTOBER 14, 2013

12 3 4 5 6 7...14

中文翻译

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840N051BGILFT 替代型号

型号	品牌	替代类型	描述	数据表
840051AGILFT	IDT	类似代替	Clock Generator, 170MHz, PDSO8, 4.40 X 3 MM, 0.925 MM HEIGHT, ROHS COMPLIANT, MO-153, TSSO

与840N051BGILFT相关器件

型号	品牌	获取价格	描述	数据表
840NT4	IDT	获取价格	System & DDR Clocks for Freescale B4/T4 Processor Systems
840NT4-01	IDT	获取价格	nullEthernet & USB Clock Generator for Freescale B4/T4-based Systems
840NT4-01NLGI	IDT	获取价格	nullEthernet & USB Clock Generator for Freescale B4/T4-based Systems
840NT4-01NLGI8	IDT	获取价格	nullEthernet & USB Clock Generator for Freescale B4/T4-based Systems
840NT4NLGI	IDT	获取价格	System & DDR Clocks for Freescale B4/T4 Processor Systems
840NT4NLGI8	IDT	获取价格	System & DDR Clocks for Freescale B4/T4 Processor Systems
840S05AYILF	IDT	获取价格	Crystal-to-LVCMOS/LVTTL Frequency Synthesizer
840S05AYILFT	IDT	获取价格	Clock Generator, 200MHz, PQFP32, 7 X 7 MM, 1 MM HEIGHT, ROHS COMPLIANT, MS-026ABA-HD, TQFP
840S05I	IDT	获取价格	Crystal-to-LVCMOS/LVTTL Frequency Synthesizer
840S06AKILF	IDT	获取价格	CLOCK GENERATOR FOR CAVIUM PROCESSORS

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