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844251BG-14LFT

Description
Clock Generators & Support Products 1 LVDS OUT SYNTHESIZER
Categorysemiconductor    Analog mixed-signal IC   
File Size234KB,14 Pages
ManufacturerIDT (Integrated Device Technology, Inc.)
Websitehttp://www.idt.com/
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844251BG-14LFT Overview

Clock Generators & Support Products 1 LVDS OUT SYNTHESIZER

844251BG-14LFT Parametric

Parameter NameAttribute value
Product AttributeAttribute Value
ManufacturerIDT (Integrated Device Technology, Inc.)
Product CategoryClock Generators & Support Products
RoHSDetails
PackagingCut Tape
PackagingReel
Factory Pack Quantity2500
FemtoClock™ Crystal-to-LVDS
Clock Generator
PRODUCT DISCONTINUATION NOTICE - LAST TIME BUY EXPIRES MAY 6, 2017
ICS844251I-14
DATA SHEET
General Description
The ICS844251I-14 is an Ethernet Clock Generator.
The ICS844251I-14 uses an 18pF parallel resonant
HiPerClockS™
crystal over the range of 23.2MHz – 30MHz. For
Ethernet applications, a 25MHz crystal is used. The
device has excellent <1ps phase jitter performance,
over the 1.875MHz – 20MHz integration range. The ICS844251I-14
is packaged in a small 8-pin TSSOP, making it ideal for use in
systems with limited board space.
Features
One differential LVDS output pair
Crystal oscillator interface designed for an 18pF, parallel resonant
crystal (23.2MHz – 30MHz)
Output frequency ranges: 145MHz – 187.5MHz and
580MHz – 750MHz
VCO range: 580MHz – 750MHz
RMS phase jitter at 156.25MHz, using a 25MHz crystal
(1.875MHz – 20MHz): 0.53ps (typical)
Full 2.5V output supply mode
-40°C to 85°C ambient operating temperature
Available in lead-free (RoHS 6) package
For functional replacement part use 8T49N242
ICS
Common Configuration Table
Inputs
Crystal Frequency (MHz)
25
26.67
25 (default)
FREQ_SEL
1
1
0
M
25
25
25
N
1
1
4
Multiplication Value M/N
25
25
6.25
Output Frequency Range
(MHz)
625
666.67
156.25
Block Diagram
FREQ_SEL
Pulldown
Pin Assignment
V
DDA
GND
XTAL_OUT
XTAL_IN
1
2
3
4
8
7
6
5
V
DD
Q
nQ
FREQ_SEL
XTAL_IN
OSC
XTAL_OUT
Phase
Detector
VCO
580MHz - 750MHz
FREQ_SEL
0
(default)
1
N
÷4
÷1
Q
nQ
M = ÷25
(fixed)
ICS844251I-14
8 Lead TSSOP
4.40mm x 3.0mm x 0.925mm
package body
G Package
Top View
ICS844251BGI-14 REVISION A June 6, 2016
1
©2016 Integrated Device Technology, Inc.

844251BG-14LFT Related Products

844251BG-14LFT 844251BGI-14LF
Description Clock Generators & Support Products 1 LVDS OUT SYNTHESIZER Clock Generators & Support Products 1 LVDS OUT SYNTHESIZER
Product Attribute Attribute Value Attribute Value
Manufacturer IDT (Integrated Device Technology, Inc.) IDT (Integrated Device Technology, Inc.)
Product Category Clock Generators & Support Products Clock Generators & Support Products
RoHS Details Details
Factory Pack Quantity 2500 96
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