參數(shù)資料
型號: ICS8745BM-21LF
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 4/19頁
文件大?。?/td> 0K
描述: IC CLK GEN ZD DIFF-LVDS 20-SOIC
標(biāo)準(zhǔn)包裝: 37
系列: HiPerClockS™
類型: 時鐘發(fā)生器
PLL: 帶旁路
輸入: HCSL,LVDS,LVHSTL,LVPECL,SSTL
輸出: LVDS
電路數(shù): 1
比率 - 輸入:輸出: 1:1
差分 - 輸入:輸出: 是/是
頻率 - 最大: 700MHz
除法器/乘法器: 是/是
電源電壓: 3.135 V ~ 3.465 V
工作溫度: 0°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: 20-SOIC(0.295",7.50mm 寬)
供應(yīng)商設(shè)備封裝: 20-SOIC
包裝: 管件
其它名稱: 800-1218
800-1218-5
800-1218-ND
8745BM-21LF
ICS8745BM-21 REVISION D JANUARY 25, 2010
12
2010 Integrated Device Technology, Inc.
ICS8745B-21 Data Sheet
1:1 DIFFERENTIAL-TO-LVDS ZERO DELAY CLOCK GENERATOR
Recommendations for Unused Input and Output Pins
Inputs:
LVCMOS Control Pins:
All control pins have internal pull-ups or pull-downs; additional
resistance is not required but can be added for additional protection.
A 1k
resistor can be used.
CLK/nCLK Input
For applications not requiring the use of the differential input, both
CLK and nCLK can be left floating. Though not required, but for
additional protection, a 1k
resistor can be tied from CLK to ground.
Outputs:
LVDS Output
All unused LVDS output pairs can be either left floating or terminated
with 100
across. If they are left floating, we recommend that there
is no trace attached.
3.3V LVDS Driver Termination
A general LVDS interface is shown in Figure 4. In a 100
differential
transmission line environment, LVDS drivers require a matched load
termination of 100
across near the receiver input. For a multiple
LVDS outputs buffer, if only partial outputs are used, it is
recommended to terminate the unused outputs.
Figure 4. Typical LVDS Driver Termination
3.3V
LVDS Driver
R1
100
+
3.3V
50
50
100
Differential Transmission Line
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