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MK1449B - Sound/SCSI+Fast Ethernet Clock

General 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.

Key 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 Diag.

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Datasheet Details

Part number MK1449B
Manufacturer Integrated Circuit Systems
File Size 60.62 KB
Description Sound/SCSI+Fast Ethernet Clock
Datasheet download datasheet MK1449B Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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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.