W255H, W255HT, W256 Selling Leads, Datasheet
MFG:CYPRESS Package Cooled:SOP-44 D/C:0145+
W255H, W255HT, W256 Datasheet download
Part Number: W255H
MFG: CYPRESS
Package Cooled: SOP-44
D/C: 0145+
W255H, W255HT, W256
- Table of contents:
Info of W255H
Info of W255HT
Info of W256
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About W255H
PDF/DataSheet Download
Datasheet: W255H
File Size: 132256 KB
Manufacturer: CYPRESS [Cypress Semiconductor]
Download : Click here to Download
About W255HT
PDF/DataSheet Download
Datasheet: W255HT
File Size: 132256 KB
Manufacturer: CYPRESS [Cypress Semiconductor]
Download : Click here to Download
About W256
PDF/DataSheet Download
Datasheet: W256
File Size: 180580 KB
Manufacturer: CYPRESS [Cypress Semiconductor]
Download : Click here to Download
W256 General Description
The W256 is a 3.3V/2.5V buffer designed to distribute high-speed clocks in PC applications. The part has 12 outputs. Designers can configure these outputs to support 3 unbuffered standard SDRAM DIMMs and 2 DDR DIMMs. The W256 can be used in conjunction with the W250-02 or similar clock synthesizer for the VIA Pro 266 chipset.
The W256 also includes an SMBus interface which can enable or disable each output clock. On power-up, all output clocks are enabled (internal pull-up).
The W256 also includes an SMBus interface which can enable or disable each output clock. On power-up, all output clocks are enabled (internal pull-up).
W256 Maximum Ratings
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
DC Input Voltage (except BUF_IN) ........... 0.5V to VDD+0.5
Storage Temperature ..............................65°C to +150°C
Static Discharge Voltage ............................................>2000V
W256 Features
• One input to 12 output buffer/drivers
• Supports up to 2 DDR DIMMs or 3 SDRAM DIMMS
• One additional output for feedback
• SMBus interface for individual output control
• Low skew outputs (< 100 ps)
• Supports 266 MHz and 333 MHz DDR SDRAM
• Dedicated pin for power management support
• Space-saving 28-pin SSOP package
• Supports up to 2 DDR DIMMs or 3 SDRAM DIMMS
• One additional output for feedback
• SMBus interface for individual output control
• Low skew outputs (< 100 ps)
• Supports 266 MHz and 333 MHz DDR SDRAM
• Dedicated pin for power management support
• Space-saving 28-pin SSOP package
W256 Connection Diagram
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