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부품번호 | MK1432S 기능 |
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기능 | Green PC and Local Bus Clock Source | ||
제조업체 | Integrated Circuit Systems | ||
로고 | |||
MK1432/MK1434
Green PC and Local Bus Clock Source
Description
The MK1432 and MK1434 are low cost, high
performance triple clock synthesizers for green PC and
local bus desktop and notebook applications. Using
analog Phase-Locked Loop (PLL) techniques, the
devices accept a 14.318 MHz crystal input to produce
multiple output clocks up to 100 MHz. They provide
selectable 2XCPU and CPU, selectable local bus clock,
ISA clock, and one fixed peripheral clock. The chips
support PCI and VL buses. The fixed clock is either
24MHz or 40MHz. The devices can operate at 5V or
3.3V up to and including 80MHz on the 2XCPU clock.
The Power Saving pin causes the CPU clocks to
smoothly transition to 33.33 MHz for Pentiums, and
16.67 MHz for 486DX4. In addition, a single pin can be
made to slow DX2s to 8 MHz.
Features
• Packaged in 16 pin narrow (150 mil) SOIC
• Supports all Pentium™ Processor timing specs
• Supports synchronous and asynchronous local bus
• Selectable local bus frequencies of 25, 33, or
50MHz
• SCSI or VL bus 40MHz clock on MK1434
• Floppy or super I/O clock on MK1432
• Single Power Saving pin switches to low power
mode (for 486 and Pentium)
• 5V or 3.3V (up to 80MHz) operation
• Smooth transitions for Pentium and 486 based
Green PC
• Low skew (<250ps) Pentium compatible
2X and 1X outputs
• Duty cycle of 45/55 up to 100 MHz
• 25mA output drive capability at TTL levels
• Compatible with all popular microprocessors
• Packaged in 16 pin narrow SOIC
• For Early Clock support, consult MicroClock
Block Diagram
FS0
FS1
FS2
PS
VDD GND
CPU
Clocks
Output
Buffer
÷2 Output
Buffer
2XCPU
CPU
BCLKS
14.318 MHz
crystal
X1
X2
Crystal
Oscillator
Local
Bus
Clock
Fixed
Clock
Output
Buffer
Output
Buffer
Output
Buffer
BCLK
40.00 (MK1434)
or 24.00 MHz
(MK1432)
14.318 MHz
MDS 1432 G
1 Revision 060101
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126 • (408)295-9800 • www.icst.com
MK1432/MK1434
Green PC and Local Bus Clock Source
Package Outline and Package Dimensions
EH
h x 45°
D
16 pin SOIC narrow
Symbol
A
b
c
D
E
H
e
h
Q
Inches
Min Max
0.055 0.070
0.013 0.019
0.007 0.010
0.385 0.400
0.150 0.160
0.225 0.245
.050 BSC
0.016
0.004 0.01
Millimeters
Min Max
1.397 1.778
0.330 0.483
0.191 0.254
9.779 10.160
3.810 4.064
5.715 6.223
1.27 BSC
0.406
0.102 0.254
Q
e
c
b
A
Ordering Information
Part/Order Number
MK1432S
MK1434S
MK1432STR
MK1434STR
Marking
MK1432S
MK1434S
MK1432S
MK1434S
Fixed Output Clock Frequency
24 MHz
40 MHz
-
-
Package
Temperature
16 pin SOIC
16 pin SOIC
Add Tape & Reel
Add Tape & Reel
0-70°C
0-70°C
-
-
While the information presented herein has been checked for both accuracy and reliability, MicroClock Incorporated assumes no responsibility for either
its use or for the infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are
implied. This product is intended for use in normal commercial applications. Any other applications such as those requiring extended temperature
range, high reliability, or other extraordinary environmental requirements are not recommended without additional processing by MicroClock.
MicroClock reserves the right to change any circuitry or specifications without notice. MicroClock does not authorize or warrant any MicroClock
product for use in life support devices or critical medical instruments.
Pentium™ is a registered trademark of Intel Corporation
MDS 1432 G
4 Revision 060101
Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126 • (408)295-9800 • www.icst.com
4페이지 | |||
구 성 | 총 4 페이지수 | ||
다운로드 | [ MK1432S.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
부품번호 | 상세설명 및 기능 | 제조사 |
MK1432 | Green PC and Local Bus Clock Source | Integrated Circuit Systems |
MK1432S | Green PC and Local Bus Clock Source | Integrated Circuit Systems |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |