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MK1449SI の電気的特性と機能

MK1449SIのメーカーはIntegrated Circuit Systemsです、この部品の機能は「Sound/SCSI+Fast Ethernet Clock」です。


製品の詳細 ( Datasheet PDF )

部品番号 MK1449SI
部品説明 Sound/SCSI+Fast Ethernet Clock
メーカ Integrated Circuit Systems
ロゴ Integrated Circuit Systems ロゴ 




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MK1449SI Datasheet, MK1449SI PDF,ピン配置, 機能
MK1449B
Sound/SCSI+Fast Ethernet Clock
Description
The MK1449B is the most cost effective way to
generate high quality, high frequency clock
outputs for SCSI plus Fast Ethernet devices, or
AC97 sound chips. Using Phase-Locked-Loop
(PLL) techniques, the device uses a standard
fundamental mode, inexpensive 14.31818 MHz
crystal or clock to produce two output clocks.
The device can accept either a crystal or clock
input. Also on the chip is the ability to generate a
1.25x clock of the reference plus the reference,
making it possible to generate 20 and 25 MHz
clocks from a 20 MHz crystal.
Features
• Packaged as 8 pin SOIC
• For Fast Ethernet plus SCSI on computer
motherboards
• For AC97 sound on computer motherboards
• Less than 1 ppm synthesis error
• Input crystal frequency of 14.31818 MHz
• Operating voltages of 3.0 to 5.5V
• Available in industrial temperature
• Full CMOS level outputs with 25mA drive
capability at TTL levels
• Ideal for oscillator replacement
• Advanced, low power CMOS process
Block Diagram
VDD GND
S1, S0
2
14.31818MHz
crystal
or clock
X1
X2
Crystal
Oscillator
PLL
Clock
Synthesis
and Control
Circuitry
Output
Buffer
CLK1
Output
Buffer
CLK2
MDS 1449B C
1
Revision 120799
Printed 11/15/00
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA•95126• (408)295-9800tel • www.icst.com

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MK1449SI pdf, ピン配列
MK1449B
Sound/SCSI+Fast Ethernet Clock
Electrical Specifications
Parameter
Conditions
Minimum Typical
ABSOLUTE MAXIMUM RATINGS (stresses beyond these can permanently damage the device)
Supply Voltage, VDD
Referenced to GND
Inputs
Referenced to GND
-0.5
Clock Output
Referenced to GND
-0.5
Ambient Operating Temperature
0
Industrial temperature
-40
Soldering Temperature
Max of 10 seconds
Storage temperature
-65
DC CHARACTERISTICS (VDD = 3.3V unless otherwise noted)
Operating Voltage, VDD
3
Input High Voltage, VIH, ICLK only
ICLK (Pin 1)
(VDD/2)+1 VDD/2
Input Low Voltage, VIL, ICLK only
ICLK (Pin 1)
VDD/2
Input High Voltage, VIH
S0, S1
VDD-0.5
Input Low Voltage, VIL
S0, S1
Output High Voltage, VOH
IOH=-25mA
2.4
Output Low Voltage, VOL
IOL=25mA
IDD Operating Supply Current, 5V
No Load, 25, 40MHz
18
IDD Operating Supply Current, 3.3V
No Load, 25, 40MHz
10
Short Circuit Current
CLK output
±70
On-Chip Pull-up Resistor
Pin 7
270
Input Capacitance, S1, S0
Pins 6, 7
4
AC CHARACTERISTICS (VDD = 3.3V unless otherwise noted)
Input Frequency, crystal input
10 14.31818
Input Frequency, clock input
10 14.31818
Output Frequency
VDD = 3.0 to 5.5V
10
Output Clock Rise Time
0.8 to 2.0V
1
Output Clock Fall Time
2.0 to 0.8V
1
Output Clock Duty Cycle
at VDD/2
40 49 to 51
Synthesis error, 25, 40 MHz
Synthesis error, 12.288, 49.152 MHz
Absolute Clock Period Jitter, 20 pF load
Deviation from mean
±240
One Sigma Clock Period Jitter, 20 pF load
100
Maximum
7
VDD+0.5
VDD+0.5
70
85
260
150
5.5
(VDD/2)-1
0.5
0.4
27
50
75
60
1
1
Units
V
V
V
°C
°C
°C
°C
V
V
V
V
V
V
V
mA
mA
mA
k
pF
MHz
MHz
MHz
ns
ns
%
ppm
ppm
ps
ps
MDS 1449B C
3
Revision 120799
Printed 11/15/00
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose •CA•95126• (408)295-9800tel • www.icst.com


3Pages





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共有リンク

Link :


部品番号部品説明メーカ
MK1449S

Sound/SCSI+Fast Ethernet Clock

Integrated Circuit Systems
Integrated Circuit Systems
MK1449SI

Sound/SCSI+Fast Ethernet Clock

Integrated Circuit Systems
Integrated Circuit Systems
MK1449SITR

Sound/SCSI+Fast Ethernet Clock

Integrated Circuit Systems
Integrated Circuit Systems
MK1449STR

Sound/SCSI+Fast Ethernet Clock

Integrated Circuit Systems
Integrated Circuit Systems


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