参数资料
型号: ICS8745BM-21LF
厂商: IDT, Integrated Device Technology Inc
文件页数: 4/19页
文件大小: 0K
描述: IC CLK GEN ZD DIFF-LVDS 20-SOIC
标准包装: 37
系列: HiPerClockS™
类型: 时钟发生器
PLL: 带旁路
输入: HCSL,LVDS,LVHSTL,LVPECL,SSTL
输出: LVDS
电路数: 1
比率 - 输入:输出: 1:1
差分 - 输入:输出: 是/是
频率 - 最大: 700MHz
除法器/乘法器: 是/是
电源电压: 3.135 V ~ 3.465 V
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 20-SOIC(0.295",7.50mm 宽)
供应商设备封装: 20-SOIC
包装: 管件
其它名称: 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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