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參數(shù)資料
| 型號： | MK1409STR |
| 元件分類： | 時(shí)鐘產(chǎn)生/分配 |
| 英文描述： | 48 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數(shù)： | 1/4頁 |
| 文件大?。?/td> | 25K |
| 代理商： | MK1409STR |
Clock Synthesis
and Control
Circuitry
MK1409
Peripheral Clock Synthesizer
MDS1409B
1
Revision 10016
Printed 10/31/97
MicroClock Incorporated1171 North Fourth St.San JoseCA95112(408)295-9800tel(408)295-9818fax
PRELIMINARY INFORMATION
The MK1409 is the ideal way to generate clocks
for peripherals used in computer motherboards.
The device uses MicroClock’s proprietary mixture
of analog and digital Phase-Locked Loop (PLL)
technology to synthesize one of four frequencies
from the 14.31818 MHz reference. The chip
provides clocks of 12, 16, 24, 30, 40 and 48 MHz
in different combinations. It also has a mode
where it can be used to multiply the input clock by
1.5X, 2X, and 3X. In an 8 pin SOIC, the MK1409
can save component count, board space, and cost
over crystals and oscillators, and increase reliability
by eliminating up to three expensive mechanical
devices from the board.
MicroClock offers many other clocks for
computers and computer peripherals. Consult
MicroClock when you need to remove crystals and
oscillators from your board.
Block Diagram
Description
Features
Packaged in 8 pin SOIC
Input clock frequency of 14.31818 MHz
Provides USB, SIO, and keyboard clocks
Provides USB and SCSI clocks
Can be configured as 1.5X, 2X and 3X multiplier
Low jitter
25mA drive capability at TTL levels
3.3V or 5V±10% supply voltage
Advanced, low power CMOS process
Clock
Buffer
VDD GND
14.31818 MHz
clock
Output
Buffer
S1
S0
ICLK
Output
Buffer
Output
Buffer
CLK 1
(48 MHz)
CLK 2
(24 MHz)
CLK 3
(12, 16, or
40 MHz)
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