參數(shù)資料
型號: SY89221UMG
廠商: MICREL INC
元件分類: 時鐘及定時
英文描述: 89221 SERIES, LOW SKEW CLOCK DRIVER, 15 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PQFP64
封裝: LEAD FREE, TQFP-64
文件頁數(shù): 8/17頁
文件大?。?/td> 828K
代理商: SY89221UMG
Micrel, Inc.
SY89221U
September 2006
16
M9999-092906-A
hbwhelp@micrel.com or (408) 955-1690
LVPECL Output Interface Applications
LVPECL has high input impedance, and very low
output impedance (open emitter), and small signal
swing which results in low EMI. LVPECL is ideal for
driving
50-
and
100-controlled
impedance
transmission lines. There are several techniques for
terminating the LVPECL output: Parallel Termination-
Thevenin Equivalent, Parallel Termination (3-resistor),
and AC-coupled Termination. Unused output pairs
may be left floating. However, single-ended outputs
must be terminated, or balanced.
Figure 5a. Parallel Termination-Thevenin
Equivalent
Figure 5b. Parallel Termination
(3-Resistor)
Related Product and Support Documentation
Part Number
Function
Data Sheet Link
SY89218U
Precision 1:15 LVDS Fanout Buffer with 2:1
MUX and Four ÷1/÷2/÷4 Clock Divider Output
Banks
http://www.micrel.com/_PDF/HBW/sy89218u.pdf
SY89200U
Ultra-Precision 1:8 LVDS Fanout with Three
÷1/÷2/÷4 Clock Divider Output Banks
http://www.micrel.com/_PDF/HBW/sy89200u.pdf
SY89202U
Ultra-Precision 1:8 LVPECL Fanout with Three
÷1/÷2/÷4 Clock Divider Output Banks
http://www.micrel.com/_PDF/HBW/sy89202u.pdf
HBW
Solutions
New Products and Applications
http://www.micrel.com/page.do?page=/product-
info/as/HBWsolutions.shtml
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