900,000+ datasheet pdf search and download

Datasheet4U offers most rated semiconductors data sheet pdf






ICS

ICS844021I-01 Datasheet Preview

ICS844021I-01 Datasheet

CRYSTAL-TO- LVDS CLOCK GENERATOR

No Preview Available !

www.DataSheet4U.com
Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS844021I-01
FEMTOCLOCKS™CRYSTAL-TO- LVDS
CLOCK GENERATOR
GENERAL DESCRIPTION
ICS
The ICS844021I-01 is an Ethernet Clock
Generator and a member of the HiPerClocksTM
HiPerClockS™ family of high performance devices from ICS. The
ICS844021I-01 uses an 18pF parallel resonant
crystal over the range of 24.5MHz - 34MHz. For
Ethernet applications, a 25MHz crystal is used. The
ICS844021I-01 has excellent <1ps phase jitter performance,
over the 1.875MHz - 20MHz integration range. The
ICS844021I-01 is packaged in a small 8-pin TSSOP, making
it ideal for use in systems with limited board space.
FEATURES
(1) Differential LVDS output
Crystal oscillator interface, 18pF parallel resonant crystal
(24.5MHz - 34MHz)
Output frequency range: 122.5MHz - 170MHz
VCO range: 490MHz - 680MHz
RMS phase jitter @ 125MHz, using a 25MHz crystal
(1.875MHz - 20MHz): 0.45ps (typical)
3.3V or 2.5V operating supply
-40°C to 85°C ambient operating temperature
COMMON CONFIGURATION TABLE - Gb ETHERNET
Inputs
Crystal Frequency (MHz) M
25
26.666
33.33
20
20
20
N
Multiplication
Value M/N
45
45
45
Output Frequency
(MHz)
125
133.33
166.66
BLOCK DIAGRAM
OE Pullup
XTAL_IN
XTAL_OUT
OSC
Phase
Detector
VCO
490MHz - 680MHz
N = ÷4 (fixed)
M = ÷20 (fixed)
Q0
nQ0
PIN ASSIGNMENT
VDDA
GND
XTAL_OUT
XTAL_IN
1
2
3
4
8 VDD
7 Q0
6 nQ0
5 OE
ICS844021I-01
8-Lead TSSOP
4.40mm x 3.0mm x 0.925mm
package body
G Package
Top View
The Preliminary Information presented herein represents a product in prototyping or pre-production. The noted characteristics are based on initial
product characterization. Integrated Circuit Systems, Incorporated (ICS) reserves the right to change any circuitry or specifications without notice.
844021AGI-01
www.icst.com/products/hiperclocks.html
REV. A MARCH 29, 2005
1




ICS

ICS844021I-01 Datasheet Preview

ICS844021I-01 Datasheet

CRYSTAL-TO- LVDS CLOCK GENERATOR

No Preview Available !

Integrated
Circuit
Systems, Inc.
PRELIMINARY
ICS844021I-01
FEMTOCLOCKS™CRYSTAL-TO- LVDS
CLOCK GENERATOR
TABLE 1. PIN DESCRIPTIONS
Number
Name
Type
Description
1
VDDA
Power
2
GND
Power
Analog supply pin.
Power supply ground.
3, 4
XTAL_OUT,
XTAL_IN
Input
Crystal oscillator interface. XTAL_IN is the input,
XTAL_OUT is the output.
Output enable pin. When HIGH, Q0/nQ0 output is active.
5 OE Input Pullup When LOW, the Q0/nQ0 output is in a high impedance state.
LVCMOS/LVTTL interface levels.
6, 7
nQ0, Q0
Output
Differential clock outputs. LVDS interface levels.
8 VDD Power
Core supply pin.
NOTE: Pullup refers to internal input resistors. See Table 2, Pin Characteristics, for typical values.
TABLE 2. PIN CHARACTERISTICS
Symbol
CIN
RPULLUP
Parameter
Input Capacitance
Input Pullup Resistor
Test Conditions
Minimum
Typical
4
51
Maximum
Units
pF
kΩ
844021AGI-01
www.icst.com/products/hiperclocks.html
2
REV. A MARCH 29, 2005


Part Number ICS844021I-01
Description CRYSTAL-TO- LVDS CLOCK GENERATOR
Maker ICS
PDF Download

ICS844021I-01 Datasheet PDF





Similar Datasheet

1 ICS844021I-01 CRYSTAL-TO- LVDS CLOCK GENERATOR
ICS





Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

Site map

Webmaste! click here

Contact us

Buy Components

Privacy Policy