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W255

Features: • One input to 24-output buffer/driver• Supports up to 4 DDR DIMMs or 3 SDRAM DIMMS• One additional output for feedback• SMBus interface for individual output control• Low skew outputs (< 100 ps)• Supports 266-, 333-, and 400-MHz DDR SDRAM• De...

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SeekIC No. : 004544516 Detail

W255: Features: • One input to 24-output buffer/driver• Supports up to 4 DDR DIMMs or 3 SDRAM DIMMS• One additional output for feedback• SMBus interface for individual output contr...

W255 Data Sheet

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Part Number:
W255
Supply Ability:
5000

Price Break

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

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Upload time: 2024/11/20

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Product Details

Description



Features:

• One input to 24-output buffer/driver
• Supports up to 4 DDR DIMMs or 3 SDRAM DIMMS
• One additional output for feedback
• SMBus interface for individual output control
• Low skew outputs (< 100 ps)
• Supports 266-, 333-, and 400-MHz DDR SDRAM
• Dedicated pin for power management support
• Space-saving 48-pin SSOP package


Pinout

Connection Diagram


Specifications

Supply Voltage to Ground Potential .....................0.5 to +7.0V
DC Input Voltage (except BUF_IN) ............... 0.5V to VDD+0.5
Storage Temperature.................................. 65°C to +150°C
Static Discharge Voltage .............................................. > 2000V
(per MIL-STD-883, Method 3015)


Description

The W255 is a 3.3V/2.5V buffer designed to distribute high-speed clocks in PC applications. The part has 24 outputs. Designers can configure these outputs to support four unbuffered DDR DIMMS or to support three unbuffered standard SDRAM DIMMs and two DDR DIMMS. The W255 can be used in conjunction with the W250 or similar clock synthesizer for the VIA Pro 266 chipset.

The W255 also includes an SMBus interface which can enable or disable each output clock. On power-up, all output clocks are enabled (internal pull up).




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