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PDF PI6C10806 Data sheet ( Hoja de datos )
| Número de pieza | PI6C10806 | |
| Descripción | Low Skew 1:6 Crystal to LVCMOS Clock Buffer | |
| Fabricantes | Pericom Semiconductor | |
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PI6C10806
1.8V/2.5V, 250MHz, Low Skew 1:6 Crystal to LVCMOS Clock Buffer
Features
• Six low skew outputs: < 80ps
• Crystal oscillator input: 10MHz to 40MHz
• Switching frequency up to 250 MHz
• Fast output rise/fall time: < 800ps
• Synchronous output enables
• Industrial Temperature range: –40°C to +85°C
• 1.8V and 2.5V operation
• Packaging (Pb-free & Green available):
– 16-pin 173-mil wide TSSOP (L)
Description
Pericom Semiconductor’s PI6C10806 is a low skew six output
crystal oscillator driver. Crystal oscillator input range is from
10MHz to 40MHz. If XTAL_IN is driven with a signal source,
then the input frequency can be as high as 250MHz. PI6C10806,
the outputs are configured into 2 groups: a five output and a single
output; each with independent output enable.
PI6C10806 has a wide range of operating voltages: 1.8V and 2.5V.
This feature paired with the low output-to-output and part-to-part
skew makes the device ideal for low voltage, low power, high
frequency single ended applications; such as networking
Block Diagram
www.DataSheet4U.com
XTAL_IN
XTAL_OUT
ENABLE1
ENABLE2
Sync
Sync
Pin Configuration
5
BCLK[0:4]
BCLK5
XTAL_OUT
ENABLE2
GND
BCLK0
VDDO
BCLK1
GND
BCLK2
1
2
3
4
5
6
7
8
16 XTAL_IN
15 ENABLE1
14 BCLK5
13 VDDO
12 BCLK4
11 GND
10 BCLK3
9 VDD
Pin Description
Pin Name
ENABLE1,
ENABLE2
XTAL_IN
XTAL_OUT
BCLK[0:5]
GND
VDD
VDDO
Description
Active High Output Enable Inputs
Crystal interface
Crystal interface
Clock Outputs
Ground
Core Power
Output Power
07-0112
Truth Table(1)
Inputs
Outputs
ENABLE1
L
ENABLE2
L
BCLK[0:4]
L
BCLK5
L
L H L Switching
H L Switching L
H H Switching Switching
Note:
1. H = High Voltage Level, L = Low Voltage Level
1 PS8823B 04/27/07
1 page  
PI6C10806
1.8V/2.5V Low Skew 1:6 Crystal to LVCMOS Clock Buffer
Crystal Characteristic (link to "http://www.pericom.com/saronix" for more detailed crystal specifications)
Parameters
OSCMODE
FREQ
ESR(1)
Description
Mode of Oscillation
Frequency
Equivalent Series Resistance
Min Typ
Fundamental
10 25
30
Max. Units
40 MHz
200 Ohm
CLOAD
CSHUNT
Load Capacitance
Shunt Capacitance
16 32 pF
7 pF
DRIVE
Operating Drive Level
Correlation Drive Level
0.5 mW
0.1 mW
Note: 1. ESR value is dependent upon frequency of oscillation
Application Notes
Crystal circuit connection
The following diagram shows PI6C10806 crystal circuit connection with a parallel crystal. For the CL=18pF
crystal, it is suggested to use C1=18pF, C2=18pF. C1 and C2 can be adjusted to fine tune to the target ppm of
crystal oscillator according to different board layouts. R1=100Ω is strongly suggested.
Crystal Oscillator Circuit
C1
18pF
Crystal (CL = 18pF)
100Ω
C2
18pF
R1
XTAL_IN
XTAL_OUT
07-0112
5 PS8823B 04/27/07
5 Page | ||
| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet PI6C10806.PDF ] | |
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