- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄298596 > 85408BGI (INTEGRATED DEVICE TECHNOLOGY INC) 85408 SERIES, LOW SKEW CLOCK DRIVER, 8 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO24 PDF資料下載
參數(shù)資料
| 型號： | 85408BGI |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 時鐘及定時 |
| 英文描述： | 85408 SERIES, LOW SKEW CLOCK DRIVER, 8 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO24 |
| 封裝： | 4.40 X 7.80 MM, 0.925 MM HEIGHT, MO-153, TSSOP-24 |
| 文件頁數(shù)： | 4/16頁 |
| 文件大?。?/td> | 755K |
| 代理商： | 85408BGI |
ICS85408I Datasheet
LOW SKEW, 1-TO-8, DIFFERENTIAL-TO-LVDS CLOCK DISTRIBUTION CHIP
ICS85408BGI REVISION B JULY 2, 2009
12
2009 Integrated Device Technology, Inc.
Power Considerations
This section provides information on power dissipation and junction temperature for the ICS85408I.
Equations and example calculations are also provided.
1.
Power Dissipation.
The total power dissipation for the ICS85408I 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 * 90mA = 311.85mW
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 for HiPerClockS devices is 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 no air flow and
a multi-layer board, the appropriate value is 70°C/W per Table 6 below.
Therefore, Tj for an ambient temperature of 85°C with all outputs switching is:
85°C + 0.312W * 70°C/W = 106.8°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 (multi-layer).
Table 6. Thermal Resistance θJA for 24 Lead TSSOP, Forced Convection
θ
JA by Velocity
Meters per Second
01
2.5
Multi-Layer PCB, JEDEC Standard Test Boards
70°C/W
65.0°C/W
62°C/W
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 85411AMILFT | 85411 SERIES, LOW SKEW CLOCK DRIVER, 2 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8 |
| 85424-001 | 12 CONTACT(S), FEMALE, RIGHT ANGLE TELECOM AND DATACOM CONNECTOR, SURFACE MOUNT, RECEPTACLE |
| 8545AGI-02LF | 8545 SERIES, LOW SKEW CLOCK DRIVER, 4 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO20 |
| 85460-001 | 12 CONTACT(S), FEMALE, RIGHT ANGLE TELECOM AND DATACOM CONNECTOR, SURFACE MOUNT, RECEPTACLE |
| 85460-011 | 12 CONTACT(S), FEMALE, RIGHT ANGLE TELECOM AND DATACOM CONNECTOR, SURFACE MOUNT, RECEPTACLE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 85408BGILF | 功能描述:時鐘緩沖器 Low Skew 1-to-8 Diff to LVDS Clock Dist RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:5 最大輸入頻率:40 MHz 傳播延遲（最大值）: 電源電壓-最大:3.45 V 電源電壓-最小:2.375 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LLP-24 封裝:Reel |
| 85408BGILF-HT | 制造商:Integrated Device Technology Inc 功能描述:CLOCK BFFR 16-OUT 24TSSOP - Rail/Tube |
| 85408BGILFT | 功能描述:時鐘驅(qū)動器及分配 Low Skew 1-to-8 Diff to LVDS Clock Dist RoHS:否 制造商:Micrel 乘法/除法因子:1:4 輸出類型:Differential 最大輸出頻率:4.2 GHz 電源電壓-最大: 電源電壓-最小:5 V 最大工作溫度:+ 85 C 封裝 / 箱體:SOIC-8 封裝:Reel |
| 85408BGIT | 制造商:Integrated Device Technology Inc 功能描述:85408BGIT - Tape and Reel |
| 85408BGLF | 功能描述:時鐘緩沖器 Low Skew 1-to-8 Diff to LVDS Clock Dist RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:5 最大輸入頻率:40 MHz 傳播延遲（最大值）: 電源電壓-最大:3.45 V 電源電壓-最小:2.375 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:LLP-24 封裝:Reel |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。