- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄364521 > 853054AG 4:1, DIFFERENTIAL-TO-3.3V OR 2.5V LVPECL/ECL CLOCK MULTIPLEXER PDF資料下載
參數(shù)資料
| 型號(hào)： | 853054AG |
| 英文描述： | 4:1, DIFFERENTIAL-TO-3.3V OR 2.5V LVPECL/ECL CLOCK MULTIPLEXER |
| 中文描述： | 4:1，差分至3.3V或2.5V的LVPECL / ECL時(shí)鐘復(fù)用器 |
| 文件頁數(shù)： | 11/15頁 |
| 文件大小： | 207K |
| 代理商： | 853054AG |
Integrated
Circuit
Systems, Inc.
853054AG
www.icst.com/products/hiperclocks.html
REV. A JANUARY 5, 2006
11
ICS853054
4:1, D
IFFERENTIAL
-
TO
-3.3V
OR
2.5V
LVPECL/ECL C
LOCK
M
ULTIPLEXER
PRELIMINARY
P
OWER
C
ONSIDERATIONS
This section provides information on power dissipation and junction temperature for the ICS853054.
Equations and example calculations are also provided.
1. Power Dissipation.
The total power dissipation for the ICS853054 is the sum of the core power plus the power dissipated in the load(s).
The following is the power dissipation for V
= 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
= V
CC_MAX
* I
EE_MAX
=
3.465V
* 61mA =
211.37mW
Power (outputs)
MAX
=
27.83mW/Loaded Output pair
Total Power
_MAX
(
3.465V
, with all outputs switching) =
211.37mW + 27.83mW =
239.2mW
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
TM
devices is 125°C.
The equation for Tj is as follows: Tj =
θ
JA
* Pd_total + T
A
Tj = Junction Temperature
θ
JA
= junction-to-Ambient Thermal Resistance
Pd_total = Total Device Power Dissipation (example calculation is in section 1 above)
T
A
= Ambient Temperature
In order to calculate junction temperature, the appropriate junction-to-ambient thermal resistance
θ
must be used. Assuming a
moderate air flow of 200 meters per second and a multi-layer board, the appropriate value is 81.8°C/W per Table 6 below.
Therefore, Tj for an ambient temperature of 85°C with all outputs switching is:
85°C + 0.239W * 81.8°C/W = 104.6°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).
θ
JA
by Velocity (Meters per Second)
T
ABLE
6. T
HERMAL
R
ESISTANCE
θ
JA
FOR
16-P
IN
TSSOP F
ORCED
C
ONVECTION
0
200
500
Single-Layer PCB, JEDEC Standard Test Boards
Multi-Layer PCB, JEDEC Standard Test Boards
137.1°C/W
89.0°C/W
118.2°C/W
81.8°C/W
106.8°C/W
78.1°C/W
NOTE:
Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 853054AL | 4:1, DIFFERENTIAL-TO-3.3V OR 2.5V LVPECL/ECL CLOCK MULTIPLEXER |
| 854660 | Analog Filter |
| 854661 | Analog Filter |
| 854662 | Analog Filter |
| 854663 | Analog Filter |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 853054AGLF | 制造商:IDT from Components Direct 功能描述:IDT 853054AGLF CLOCK MANAGEMENT - Rail/Tube 制造商:IDT 功能描述:IDT 853054AGLF Clock Management 制造商:Integrated Device Technology Inc 功能描述:IC CLK MULTPX 4:1 3.2GHZ 16TSSOP |
| 853054AL | 制造商:ICS 制造商全稱:ICS 功能描述:4:1, DIFFERENTIAL-TO-3.3V OR 2.5V LVPECL/ECL CLOCK MULTIPLEXER |
| 853058AG | 制造商:Integrated Device Technology Inc 功能描述:Clock Multiplexer 8-IN ECL/LVPECL 24-Pin TSSOP Tube 制造商:IDT from Components Direct 功能描述:IDT 853058AG CLOCK MANAGEMENT - Rail/Tube 制造商:IDT 功能描述:IDT 853058AG Clock Management |
| 853058AGLF | 制造商:Integrated Device Technology Inc 功能描述:IC CLK MULTPX 8:1 2.8GHZ 24TSSOP |
| 8530-5913-9500 | 制造商:CRU 功能描述:DATAPORT 25 SECURE, COMPLETE ASSEMBLY, SATA, 256-BIT AES ENC - Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。