参数资料
型号: ICS854104AGILF
厂商: IDT, Integrated Device Technology Inc
文件页数: 3/15页
文件大小: 0K
描述: IC CLK BUFFER 1:4 700MHZ 16TSSOP
标准包装: 96
系列: HiPerClockS™
类型: 扇出缓冲器(分配)
电路数: 1
比率 - 输入:输出: 1:4
差分 - 输入:输出: 是/是
输入: HCSL,LVDS,LVHSTL,LVPECL,SSTL
输出: LVDS
频率 - 最大: 700MHz
电源电压: 3.135 V ~ 3.465 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-TSSOP(0.173",4.40mm 宽)
供应商设备封装: 16-TSSOP
包装: 管件
其它名称: ICS854104AGILF-ND
ICS854104AGI REVISION B JANUARY 30, 2014
11
2014 Integrated Device Technology, Inc.
ICS854104I DATA SHEET
LOW SKEW, 1-TO-4, DIFFERENTIAL-TO-LVDS FANOUT BUFFER
Power Considerations
This section provides information on power dissipation and junction temperature for the ICS854104I.
Equations and example calculations are also provided.
1.
Power Dissipation.
The total power dissipation for the ICS854104I is the sum of the core power plus the analog power plus the power dissipated in the load(s).
The following is the power dissipation for VDD = 3.3V + 5% = 3.465V, which gives worst case results.
Power (core)MAX =VDD_MAX *IDD_MAX = 3.465V * 75mA = 259.875mW
2. Junction Temperature.
Junction temperature, Tj, is the temperature at the junction of the bond wire and bond pad directly affects the reliability of the device. The
maximum recommended junction temperature is 125°C. Limiting the internal transistor junction temperature, Tj, to 125°C ensures that the bond
wire and bond pad temperature remains below 125°C.
The equation for Tj is as follows: Tj =
JA * Pd_total + TA
Tj = Junction Temperature
JA = Junction-to-Ambient Thermal Resistance
Pd_total = Total Device Power Dissipation (example calculation is in section 1 above)
TA = Ambient Temperature
In order to calculate junction temperature, the appropriate junction-to-ambient thermal resistance
JA must be used. Assuming no air flow and
a multi-layer board, the appropriate value is 100.3°C/W per Table 6 below.
Therefore, Tj for an ambient temperature of 85°C with all outputs switching is:
85°C + 0.260W * 100.3°C/W = 111.1°C. This is well below the limit of 125°C.
This calculation is only an example. Tj will obviously vary depending on the number of loaded outputs, supply voltage, air flow and the type of
board (multi-layer).
Table 6. Thermal Resistance
JA for 16-Lead TSSOP, Forced Convection
JA by Velocity
Meters per Second
0
1
2.5
Multi-Layer PCB, JEDEC Standard Test Boards
100.3°C/W
96.0°C/W
93.9°C/W
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ICS854104AGT 制造商:Integrated Device Technology Inc 功能描述:IC CLK BUFFER 1:4 700MHZ 16TSSOP
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