IDT / ICS 3.3V, 2.5V LVPECL TRANSLATOR
參數(shù)資料
型號(hào): ICS85320AMILFT
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 10/12頁
文件大?。?/td> 0K
描述: IC CLK TRANSLA 1:1 267MHZ 8-SOIC
標(biāo)準(zhǔn)包裝: 2,500
系列: HiPerClockS™
類型: 變換器
電路數(shù): 1
比率 - 輸入:輸出: 1:1
差分 - 輸入:輸出: 無/是
輸入: LVCMOS,LVTTL
輸出: LVPECL
頻率 - 最大: 267MHz
電源電壓: 2.375 V ~ 3.465 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 8-SOIC(0.154",3.90mm 寬)
供應(yīng)商設(shè)備封裝: 8-SOIC
包裝: 帶卷 (TR)
其它名稱: 85320AMILFT
IDT / ICS 3.3V, 2.5V LVPECL TRANSLATOR
7
ICS8532AMI REV A NOVEMBER 13, 2006
ICS85320I
LVCMOS/LVTTL-TO-DIFFERENTIAL 3.3V, 2.5V LVPECL TRANSLATOR
APPLICATION INFORMATION
V
CC - 2V
50
50
RTT
Z
o = 50
Z
o = 50
FOUT
FIN
RTT =
Z
o
1
((V
OH + VOL) / (VCC – 2)) – 2
3.3V
125
125
84
84
Z
o = 50
Z
o = 50
FOUT
FIN
The clock layout topology shown below is a typical termination
for LVPECL outputs. The two different layouts mentioned are
recommended only as guidelines.
FOUT and nFOUT are low impedance follower outputs that gen-
erate ECL/LVPECL compatible outputs. Therefore, terminating
resistors (DC current path to ground) or current sources must be
used for functionality. These outputs are designed to drive 50
transmission lines. Matched impedance techniques should be
used to maximize operating frequency and minimize signal dis-
tortion.
Figures 1A and 1B show two different layouts which are
recommended only as guidelines. Other suitable clock layouts
may exist and it would be recommended that the board design-
ers simulate to guarantee compatibility across all printed circuit
and clock component process variations.
TERMINATION FOR LVPECL OUTPUTS
FIGURE 1B. LVPECL OUTPUT TERMINATION
FIGURE 1A. LVPECL OUTPUT TERMINATION
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