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ICS9147-16

Features: · Generates four processor, eight bus, four 14.31818 MHz, two 48 MHz clocks for USB support.· CPU to BUS clock skew 1 to 4ns (CPU early)· Synchronous clocks skew matched to 250ps window on CPU and 500ps window on BUS.· Selectable multiplying ratios· Glitch free stop clock controls CPUEN ...

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SeekIC No. : 004371157 Detail

ICS9147-16: Features: · Generates four processor, eight bus, four 14.31818 MHz, two 48 MHz clocks for USB support.· CPU to BUS clock skew 1 to 4ns (CPU early)· Synchronous clocks skew matched to 250ps window on...

ICS9147-16 Data Sheet

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Part Number:
ICS9147-16
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

· Generates four processor, eight bus, four 14.31818 MHz, two 48 MHz clocks for USB support.
· CPU to BUS clock skew 1 to 4ns (CPU early)
· Synchronous clocks skew matched to 250ps window on CPU and 500ps window on BUS.
· Selectable multiplying ratios
· Glitch free stop clock controls CPUEN and BUSEN
· 3.0V – 3.7V supply range, 2.5V to VDD supply range for CPU (1:4) clocks and IOAPIC clock.
· 48-pin SSOP package


Pinout

Connection Diagram


Specifications

Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7.0 V
Logic Inputs . . . . . . . . . . . . . . . . . . . .  . . GND -0.5 V to VDD +0.5 V
Ambient Operating Temperature . . . . . . . .  . . . . .. . 0°C to +70°C
Storage Temperature . . . . . . . . . . . . . . . . . . . . . -65°C to +150°C


Description

The ICS9147-16 generates all clocks required for high speed RISC or CISC microprocessor systems such as Intel PentiumPro. Two different reference frequency multiplying factors are externally selectable with smooth frequency transitions. Glitch-free Stop clock control is provided for CPU and BUS clocks. Complete chip low current mode is achieved with the Power Down# pin.

High drive BUS outputs of the ICS9147-16 typically provide greater than 1 V/ ns slew rate into 30 pF loads. CPU outputs typically provide better than 1V/ns slew rate into 20 pF loads while maintaining 50±5% duty cycle. The REF and IOAPIC clock outputs typically provide better than 0.5V/ns slew rates. Separate buffer supply pins VDDL allow for nominal 3.3V voltage or reduced voltage swing (from 2.9 to 2.5V) for CPU (1:4) and IOAPIC outputs.




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