Datasheet > MK1442-03STR

MK1442-03STR

更新时间： 2024-12-02 07:35:51

品牌	Logo	应用领域
艾迪悌 - IDT		光电二极管
页数	文件大小	规格书
4页	63K
描述
Processor Specific Clock Generator, 100MHz, CMOS, PDSO16, 0.150 INCH, SKINNY, SOIC-16

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MK1442-03STR 数据手册

MK1442/MK1443

SCSI and Ethernet Clock Source

Features

Description

The MK1442/3 are the ideal way to generate clocks for

desktop computer motherboards and LAN

workstations. 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 2XCPU, CPU,

floppy controller, keyboard, system, SCSI and

Ethernet clocks. The MK1442/3 are perfect for new

Pentium™ Processor, PCI bus and 486 systems. The

devices can operate at 5V or 3.3V up to and including

80MHz on the CPU clock.

• Provides exact frequency Ethernet and SCSI clocks

• 5V or 3.3V (up to 80MHz) operation

• Output clock frequencies up to 100 MHz

• Pentium™ Processor compatible timing

• 486 compatible smooth frequency transitions

• Seven or eight output clocks

• Compatible with X86 and 680X0 CPUs

• Skew controlled 2X and 1X CPU to within 250ps

• Packaged in 16 pin skinny SOIC or PDIP

• Duty cycle of 47.5/52.5 up to 66.66 MHz

• Duty cycle of 45/55 up to 100 MHz

• Total of 15 different selectable CPU frequencies

• Tri-state outputs for board level testing

• 25mA drive capability at TTL levels

• Keyboard frequencies of 12MHz (-01),

8MHz (-02), or 16MHz (-03)

The devices are identical except the MK1442 has an

Output Enable (OE) pin that tri-states all outputs when

taken low, and the MK1443 has an extra 14.318 MHz

clock.

• Advanced, low power CMOS process

• MK1442 - output enable

• MK1443 - two 14.318 MHz outputs

Block Diagram

VDD

GND

Output

2XCPU

CPUS0

CPUS1

Buffer

Output

÷2

CPU

Buffer

8.00, 12.00,

or 16.00 MHz

Output

Buffer

Clock Synthesis

and Control Circuitry

Output

Buffer

24.00 MHz

40.000 MHz

20.000 MHz

Output

Buffer

14.318 MHz

crystal

Output

Buffer

Output

Buffer

14.318 MHz

(MK1443 only)

Crystal

Oscillator

Output

Buffer

14.318 MHz

OE (all outputs, MK1442 only)

MDS 1442/3 F

Revision 101001

Integrated Circuit Systems, Inc. • 525 Race Street • San Jose • CA • 95126 •(408)297-1201tel • www.icst.com

12 3 4

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与MK1442-03STR相关器件

型号	品牌	获取价格	描述	数据表
MK1443-01S	ICSI	获取价格	SCSI and Ethernet Clock Source
MK1443-01SLF	IDT	获取价格	Processor Specific Clock Generator, 100MHz, CMOS, PDSO16, 0.150 INCH, SKINNY, SOIC-16
MK1443-01STR	IDT	获取价格	Processor Specific Clock Generator, 100MHz, CMOS, PDSO16, 0.150 INCH, SKINNY, SOIC-16
MK1443-01STRLF	IDT	获取价格	Processor Specific Clock Generator, 100MHz, CMOS, PDSO16, 0.150 INCH, SKINNY, SOIC-16
MK1443-02S	ICSI	获取价格	SCSI and Ethernet Clock Source
MK1443-02STR	IDT	获取价格	Processor Specific Clock Generator, 100MHz, CMOS, PDSO16, 0.150 INCH, SKINNY, SOIC-16
MK1443-02STRLF	IDT	获取价格	Processor Specific Clock Generator, 100MHz, CMOS, PDSO16, 0.150 INCH, SKINNY, SOIC-16
MK1443-03S	ICSI	获取价格	SCSI and Ethernet Clock Source
MK1443-03SLF	IDT	获取价格	Processor Specific Clock Generator, 100MHz, CMOS, PDSO16, SKINNY, SOIC-16
MK1443-03STR	IDT	获取价格	Processor Specific Clock Generator, 100MHz, CMOS, PDSO16, SKINNY, SOIC-16

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