參數(shù)資料
型號(hào): SY56017RMG
廠商: MICREL INC
元件分類(lèi): 時(shí)鐘及定時(shí)
英文描述: LOW SKEW CLOCK DRIVER, QCC16
封裝: 3 X 3 MM, LEAD FREE, QFN-16
文件頁(yè)數(shù): 10/12頁(yè)
文件大?。?/td> 476K
代理商: SY56017RMG
Micrel, Inc.
SY56017R
July 2008
7
M9999-070308-A
hbwhelp@micrel.com or (408) 955-1690
Interface Applications
For Input Interface Applications see Figures 4a-e and
for CML Output Termination see Figures 5a-d.
CML Output Termination with VCCO 1.2V
For VCCO of 1.2V, Figure 5a, terminate the output
with 50 Ohms to 1.2V, not 100 ohms differentially
across the outputs. If AC-coupling is used, Figure 5d,
terminate into 50 ohms to 1.2V before the coupling
capacitor and then connect to a high value resistor to
a reference voltage. Any unused output pair needs to
be terminated, do not leave floating.
CML Output Termination with VCCO 1.8V
For VCCO of 1.8V, Figure 5a and Figure 5b,
terminate with either 50 ohms to 1.8V or 100 ohms
differentially across the outputs. AC- or DC-coupling
is fine.
Input Termination
1.8V CML driver: Terminate input with VT tied to 1.8V.
Don’t terminate 100 ohms differentially.
2.5V CML driver: Terminate input with either VT tied
to 2.5V or 100 ohms differentially.
The input cannot be DC coupled from a 1.2V CML
driver.
Timing Diagrams
Figure 1. Propagation Delay
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