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| 型号： | ICS85310AYI-01LFT |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 4/18页 |
| 文件大小： | 0K |
| 描述： | IC CLOCK BUFFER MUX 2:10 32-LQFP |
| 标准包装： | 1,000 |
| 系列： | HiPerClockS™ |
| 类型： | 扇出缓冲器（分配），多路复用器 |
| 电路数： | 1 |
| 比率 - 输入:输出： | 2:10 |
| 差分 - 输入:输出： | 是/是 |
| 输入： | HCSL，LVDS，LVHSTL，LVPECL，SSTL |
| 输出： | ECL，LVPECL |
| 频率 - 最大： | 700MHz |
| 电源电压： | 2.375 V ~ 3.8 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-LQFP |
| 供应商设备封装： | 32-TQFP（7x7） |
| 包装： | 带卷 (TR) |
| 其它名称： | 85310AYI-01LFT |
ICS85310AYI-01 REVISION I JANUARY 25, 2010
12
2010 Integrated Device Technology, Inc.
ICS5310I-01 Data Sheet
LOW SKEW, 1-TO-10 DIFFERENTIAL-TO-3.3V, 2.5V LVPECL/ECL FANOUT BUFFER
Power Considerations
This section provides information on power dissipation and junction temperature for the ICS5310I-01.
Equations and example calculations are also provided.
1.
Power Dissipation.
The total power dissipation for the ICS5310I-01 is the sum of the core power plus the power dissipated in the load(s).
The following is the power dissipation for VCC = 3.8V, which gives worst case results.
NOTE: Please refer to Section 3 for details on calculating power dissipated in the load.
Power (core)MAX = VCC_MAX * IEE_MAX = 3.8V * 120mA = 456mW
Power (outputs)MAX = 30mW/Loaded Output pair
If all outputs are loaded, the total power is 10 * 30mW = 300mW
Total Power_MAX (3.8V, with all outputs switching) = 456mW + 300mW = 756mW
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 =
θ
JA * Pd_total + TA
Tj = Junction Temperature
θ
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
θ
JA must be used. Assuming a moderate air
flow of 200 linear feet per minute and a multi-layer board, the appropriate value is 42.1°C/W per Table 5 below.
Therefore, Tj for an ambient temperature of 85°C with all outputs switching is:
85°C + 0.756W * 42.1°C/W = 116.8°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 (single layer or multi-layer).
Table 5. Thermal Resistance θJA for 32 Lead LQFP, Forced Convection
θ
JA by Velocity
Linear Feet per Minute
0200
500
Single-Layer PCB, JEDEC Standard Test Boards
67.8°C/W
55.9°C/W
50.1°C/W
Multi-Layer PCB, JEDEC Standard Test Boards
47.9°C/W
42.1°C/W
39.4°C/W
NOTE: Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.
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相关代理商/技术参数 |
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|---|---|
| ICS85310AYI-01LN | 制造商:INT_CIR_SYS 功能描述: |
| ICS85310AYI-11LF | 功能描述:IC CLOCK BUFFER MUX 2:10 32-LQFP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟缓冲器，驱动器 系列:HiPerClockS™ 标准包装:74 系列:- 类型:扇出缓冲器（分配） 电路数:1 比率 - 输入:输出:1:10 差分 - 输入:输出:是/是 输入:HCSL, LVCMOS, LVDS, LVPECL, LVTTL 输出:HCSL，LVDS 频率 - 最大:400MHz 电源电压:3 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:32-VFQFN 裸露焊盘 供应商设备封装:32-QFN（5x5） 包装:管件 |
| ICS85310AYI-11LFT | 功能描述:IC CLOCK BUFFER MUX 2:10 32-LQFP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟缓冲器，驱动器 系列:HiPerClockS™ 标准包装:74 系列:- 类型:扇出缓冲器（分配） 电路数:1 比率 - 输入:输出:1:10 差分 - 输入:输出:是/是 输入:HCSL, LVCMOS, LVDS, LVPECL, LVTTL 输出:HCSL，LVDS 频率 - 最大:400MHz 电源电压:3 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:32-VFQFN 裸露焊盘 供应商设备封装:32-QFN（5x5） 包装:管件 |
| ICS85310AYI-21 | 制造商:INT_CIR_SYS 功能描述: |
| ICS85310AYI-21LN | 功能描述:IC CLK BUFFER 1:5 700MHZ 32-LQFP RoHS:是 类别:集成电路 (IC) >> 时钟/计时 - 时钟缓冲器，驱动器 系列:HiPerClockS™ 标准包装:74 系列:- 类型:扇出缓冲器（分配） 电路数:1 比率 - 输入:输出:1:10 差分 - 输入:输出:是/是 输入:HCSL, LVCMOS, LVDS, LVPECL, LVTTL 输出:HCSL，LVDS 频率 - 最大:400MHz 电源电压:3 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:32-VFQFN 裸露焊盘 供应商设备封装:32-QFN（5x5） 包装:管件 |
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