MK1442-02S Integrated Circuit System, MK1442-02S Datasheet

MK1442-02S

Manufacturer Part Number

MK1442-02S

Description

Scsi And Ethernet Clock Source

Manufacturer

Integrated Circuit System

Datasheet

1.MK1442-02S.pdf (4 pages)

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Meier Automation Equipment Co., Limited

Part Number:

MK1442-02S

Manufacturer:

MICROCLO

Quantity:

20 000

Current page: 1 of 4
Download datasheet (68Kb)

MDS 1442/3 E

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

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.

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.

Block Diagram

14.318 MHz

crystal

Description

CPUS0

CPUS1

VDD

Oscillator

Crystal

GND

Clock Synthesis

and Control

Circuitry

• 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),

• Advanced, low power CMOS process

• MK1442 - output enable

• MK1443 - two 14.318 MHz outputs

Features

SCSI and Ethernet Clock Source

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

÷2

Revision 111500

Output

Buffer

OE (all outputs, MK1442 only)

MK1442/MK1443

CPU

14.318 MHz

(MK1443 only)

14.318 MHz

2XCPU

8.00, 12.00,

or 16.00 MHz

24.00 MHz

40.000 MHz

20.000 MHz

Printed 11/15/00

Related parts for MK1442-02S

Related keywords

MK1442-02S datasheet
MK1442-02S data sheet
MK1442-02S pdf datasheet
MK1442-02S component
MK1442-02S part
MK1442-02S distributor
MK1442-02S RoHS
MK1442-02S datasheet download