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PDF PI6C490094 Data sheet ( Hoja de datos )
| Número de pieza | PI6C490094 | |
| Descripción | 1:4 24MHz Clock Buffer | |
| Fabricantes | Pericom Semiconductor | |
| Logotipo |  |
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Features
ÎÎSupport XTAL or Clock input at 24MHz
ÎÎFour buffered outputs support VDDO operation
ÎÎVery low phase jitter(RMS) : < 1.5ps (max)
ÎÎVery low additive jitter: <300fs (typ)
ÎÎ3.3V supply voltage for Core
ÎÎ1.8V ~ 3.3V supply voltage for two output banks
ÎÎPackaging: 16-pin TSSOP
ÎÎCommercial & Industrial Temperature support
Applications
ÎÎNetworking Systems
ÎÎFemtocell BTS
ÎÎPeripheral
Block Diagram
PI6C490094
1:4 24MHz Clock Buffer
Description
The PI6C490094 is a low jitter clock buffer supporting either
XTAL or reference input. Two of its outputs can support wide
operating voltage from 1.8V to 3.3V. It is a cost effective way to
generate multiple outputs for all kinds of applications that need
24MHz with different power supplies.
Pin Configuration (16-Pin TSSOP)
X1/CLKIN
X2
Crystal
Oscillator
VDD
VDDO1
CLK1
CLK2
CLK3
CLK4
GND OE# VDDO2
X1/ICLKIN
VDD
GND
VDD
VDD02
CLK4
GND
OE#
1
2
3
4
5
6
7
8
16 X2
15 GND
14 VDD
13 CLK1
12 CLK2
11 VDDO1
10 CLK3
9 GND
16-pin (173 mil) TSSOP
13-0129
1 www.pericom.com
PI6C490094
Rev A
08/09/13
1 page  
Crystal Oscillator Circuit
C1
24pF
Crystal�(CL�=�16pF)
C2
24pF
X1
X2
PI6C490094
1:4 24MHz Clock Buffer
Typical Crystal Requirement
Parameter
Mode of Oscillation
Frequency
Equivalent Series Resistance
(ESR)
Shunt Capacitance
Drive Level
Minimum
Typical
Fundamental
24
Maximum
50
7
1
Units
MHz
Ω
pF
mW
Recommended Crystal Specification
Pericom recommends:
a) FL2400068, SMD 3.2x2.5(4P), 24MHz, CL=18pF, -20~70C, +/-20ppm, http://www.pericom.com/pdf/datasheets/se/FL.pdf
b) FL2400075, SMD 3.2x2.5(4P), 24MHz, CL=18pF, -40~85C, +/-20ppm, http://www.pericom.com/pdf/datasheets/se/FL.pdf
b) FY2400041, SMD 5x3.2(4P), 24MHz, CL=18pF, -20~70C, +/-30ppm, http://www.pericom.com/pdf/datasheets/se/FY_F9.pdf
For other crystal options, please contact Pericom sales.
Thermal Information
Symbol
QJA
QJC
Description
Junction-to-ambient thermal resistance
Junction-to-case thermal resistance
Condition
Still air
84.0 OC/W
17.0 OC/W
13-0129
5 www.pericom.com
PI6C490094
Rev A
08/09/13
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet PI6C490094.PDF ] | |
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