- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄1998 > ICS843251BGI-15LF (IDT, Integrated Device Technology Inc)IC CLK GEN ETHERNET 25MHZ 8TSSOP PDF資料下載
參數(shù)資料
| 型號(hào)： | ICS843251BGI-15LF |
| 廠商： | IDT, Integrated Device Technology Inc |
| 文件頁(yè)數(shù)： | 3/16頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC CLK GEN ETHERNET 25MHZ 8TSSOP |
| 標(biāo)準(zhǔn)包裝： | 96 |
| 系列： | HiPerClockS™, FemtoClock™ |
| 類型： | 時(shí)鐘發(fā)生器 |
| PLL： | 是 |
| 輸入： | 晶體 |
| 輸出： | LVPECL |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 1:1 |
| 差分 - 輸入:輸出： | 無(wú)/是 |
| 頻率 - 最大： | 750MHz |
| 除法器/乘法器： | 是/是 |
| 電源電壓： | 2.375 V ~ 3.465 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-TSSOP |
| 包裝： | 管件 |
第1頁(yè)第2頁(yè)當(dāng)前第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)
ICS843251I-15
FEMTOCLOCKCRYSTAL-TO-3.3V, 2.5V LVPECL CLOCK GENERATOR
IDT / ICS 3.3V, 2.5V LVPECL CLOCK GENERATOR
11
ICS843S51BGI-15 REV. A NOVEMBER 2, 2012
Power Considerations
This section provides information on power dissipation and junction temperature for the ICS843251I-15.
Equations and example calculations are also provided.
1.
Power Dissipation.
The total power dissipation for the ICS843251I-15 is the sum of the core power plus the power dissipated in the load(s).
The following is the power dissipation for VCC = 3.3V + 5% = 3.465V, 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 = 3.465V * 83mA = 287.60mW
Power (outputs)MAX = 30mW/Loaded Output pair
Total Power_MAX (3.3V, with all outputs switching) = 287.60mW + 30mW = 317.60mW
2. Junction Temperature.
Junction temperature, Tj, is the temperature at the junction of the bond wire and bond pad and directly affects the reliability of the device.
The maximum recommended junction temperature is 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 a moderate
air flow of 1 meter per second and a multi-layer board, the appropriate value is 125.5°C/W per Table 6 below.
Therefore, Tj for an ambient temperature of 85°C with all outputs switching is:
85°C + 0.318W * 125.5°C/W = 124.9°C. This is 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 8 Lead TSSOP, Forced Convection
JA vs. Air Flow
Meters per Second
01
2.5
Multi-Layer PCB, JEDEC Standard Test Boards
129.5°C/W
125.5°C/W
123.5°C/W
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ICS843253AGI-45LF | IC SYNTHESIZER LVPECL 16-TSSOP |
| ICS8432DY-101LFT | IC SYNTHESIZER 700MHZ 32-LQFP |
| ICS8432DYI-101LF | IC SYNTHESIZER 700MHZ 32-LQFP |
| ICS843SDNAGLF | IC GENERATOR FEMTOCLOCK 8TSSOP |
| ICS844001AGLFT | IC CLK GEN FIBRE CHAN 8-TSSOP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS843251BGI-15LFT | 功能描述:IC CLK GEN ETHERNET 25MHZ 8TSSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器，PLL，頻率合成器 系列:HiPerClockS™, FemtoClock™ 標(biāo)準(zhǔn)包裝:1,000 系列:- 類型:時(shí)鐘/頻率合成器，扇出分配 PLL:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 除法器/乘法器:- 電源電壓:- 工作溫度:- 安裝類型:表面貼裝 封裝/外殼:56-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:56-VFQFP-EP（8x8） 包裝:帶卷 (TR) 其它名稱:844S012AKI-01LFT |
| ICS843251BGI-15T | 制造商:Integrated Device Technology Inc 功能描述:IC SYNTHESIZER LVPECL 8TSSOP |
| ICS843251I-12 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS? CRYSTAL-TO-3.3V, 2.5V LVPECL CLOCK GENERATOR |
| ICS8432-51K | 制造商:ICS 制造商全稱:ICS 功能描述:700MHZ, CRYSTAL-TO-3.3V DIFFERENTIAL LVPECL FREQUENCY SYNTHESIZER |
| ICS843252 | 制造商:ICS 制造商全稱:ICS 功能描述:FEMTOCLOCKS⑩ CRYSTAL-TO-3.3V LVPECL FREQUENCY SYNTHESIZER |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。