參數(shù)資料
型號: ICS8543BGIT
廠商: IDT, Integrated Device Technology Inc
文件頁數(shù): 5/18頁
文件大?。?/td> 0K
描述: IC CLOCK BUFFER MUX 2:4 20-TSSOP
標準包裝: 2,500
系列: HiPerClockS™
類型: 扇出緩沖器(分配),多路復用器
電路數(shù): 1
比率 - 輸入:輸出: 2:4
差分 - 輸入:輸出: 是/是
輸入: CML,HCSL,LVDS,LVHSTL,LVPECL,SSTL
輸出: LVDS
頻率 - 最大: 650MHz
電源電壓: 3.135 V ~ 3.465 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-TSSOP(0.173",4.40mm 寬)
供應商設備封裝: 20-TSSOP
包裝: 帶卷 (TR)
其它名稱: 8543BGIT
ICS8543 Data Sheet
LOW SKEW, 1-to-4, DIFFERENTIAL-TO-LVDS FANOUT BUFFER
ICS8543BG REVISION E DECEMBER 17, 2010
13
2010 Integrated Device Technology, Inc.
Recommendations for Unused Input and Output Pins
Inputs:
CLK/nCLK INPUTS
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.
PCLK/nPCLK INPUTS
For applications not requiring the use of the differential input, both
PCLK and nPCLK can be left floating. Though not required, but for
additional protection, a 1k
resistor can be tied from PCLK to
ground.
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.
Outputs:
LVDS Outputs
All unused LVDS outputs should be terminated with 100
resistor
between the differential pair.
LVDS Driver Termination
A general LVDS interface is shown in Figure 5. Standard termination
for LVDS type output structure requires both a 100
parallel resistor
at the receiver and a 100
differential transmission line environment.
In order to avoid any transmission line reflection issues, the 100
resistor must be placed as close to the receiver as possible. IDT
offers a full line of LVDS compliant devices with two types of output
structures: current source and voltage source. The standard
termination schematic as shown in Figure 5 can be used with either
type of output structure. If using a non-standard termination, it is
recommended to contact IDT and confirm if the output is a current
source or a voltage source type structure. In addition, since these
outputs are LVDS compatible, the amplitude and common mode
input range of the input receivers should be verified for compatibility
with the output.
Figure 5. Typical LVDS Driver Termination
100
+
100
Differential Transmission Line
LVDS Driver
LVDS
Receiver
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