器件名称: W191H
功能描述: Skew Controlled SDRAM Buffer
文件大小: 157.51KB 共9页
简 介:W191
Skew Controlled SDRAM Buffer
Features
Six skew controlled CMOS outputs Output skew between any two outputs is less than 150 ps SMBus Serial configuration interface 2.5 ns to 5 ns propagation delay DC to 133 MHz operation (Commercial) DC to 100 MHz operation (Industrial) Single 3.3V supply voltage Low power CMOS design packaged in a 16-pin SSOP (Small Shrink Outline Package)
Key Specifications
Supply Voltages: ...................................... VDDQ3 = 3.3V ±5% Operating Temperature: (Commercial) ............. 0°C to +70°C Operating Temperature: (Industrial) .............. –40°C to +85°C Input Threshold:...................................................1.5V typical Maximum Input Voltage: .................................. VDDQ3 + 0.5V Input Frequency: (Commercial) ........................0 to 133 MHz Input Frequency: (Industrial).............................0 to 100 MHz BUF_IN to SDRAM0:5 Propagation Delay:.......2.5 ns to 5 ns Min. Output Edge Rate: ............................................. 1.0V/ns Max. Output Skew: ..................................................... 150 ps Output Duty Cycle:...................................45/55% worst case Output Impedance: ...................................................15: typ.
Block Diagram
Pin Configuration[1]
SDRAM0 GND
SDRAM0 SDRAM1 SDRAM2
SDATA SCLOCK
SMBus
Device Control
1 2 3 4 5 6 7 8
16 15 14 13 12 11 10 9
VDDQ3 SDRAM5 GND SDRAM4 VDDQ3 SDRAM3 GND SCLK
SDRAM1 BUF_IN GND SDRAM2 VDDQ3 SDATA
BU……
