- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄360774 > ICS85356AGIT 2:1, DIFFERENTIAL-TO-3.3V DUAL LVPECL / ECL CLOCK MULTIPLEXER PDF資料下載
參數(shù)資料
| 型號(hào)： | ICS85356AGIT |
| 英文描述： | 2:1, DIFFERENTIAL-TO-3.3V DUAL LVPECL / ECL CLOCK MULTIPLEXER |
| 中文描述： | 2:1，差分至3.3V雙的LVPECL / ECL時(shí)鐘復(fù)用器 |
| 文件頁數(shù)： | 8/14頁 |
| 文件大?。?/td> | 238K |
| 代理商： | ICS85356AGIT |
85356AMI
www.icst.com/products/hiperclocks.html
REV. A OCTOBER 7, 2004
8
Integrated
Circuit
Systems, Inc.
ICS85356I
2:1, D
IFFERENTIAL
-
TO
-3.3V
D
UAL
LVPECL / ECL C
LOCK
M
ULTIPLEXER
P
OWER
C
ONSIDERATIONS
This section provides information on power dissipation and junction temperature for the ICS85356I.
Equations and example calculations are also provided.
1. Power Dissipation.
The total power dissipation for the ICS85356I is the sum of the core power plus the power dissipated in the load(s).
The following is the power dissipation for V
CC
= 3.3V + 0.3V = 3.6V, 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
= 3.6V * 40mA =
144mW
Power (outputs)
MAX
=
30.2mW/Loaded Output pair
If all outputs are loaded, the total power is 2 * 30.2mW =
60.4mW
Total Power
_MAX
(3.6V, with all outputs switching) =
144mW + 60.4mW =
204.4mW
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
moderate air flow of 200 linear feet per minute and a multi-layer board, the appropriate value is 39.7°C/W per Table 6A below.
. Assuming a
Therefore, Tj for an ambient temperature of 85°C with all outputs switching is:
85°C + 0.204W * 39.7°C/W = 93.1°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 (single layer or multi-layer).
θ
JA
by Velocity (Linear Feet per Minute)
Table 6A. Thermal Resistance
θ
JA
for 20-pin SOIC, Forced Convection
0
200
500
Single-Layer PCB, JEDEC Standard Test Boards
Multi-Layer PCB, JEDEC Standard Test Boards
NOTE:
Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.
83.2°C/W
46.2°C/W
65.7°C/W
39.7°C/W
57.5°C/W
36.8°C/W
θ
JA
by Velocity (Linear Feet per Minute)
Table 6B. Thermal Resistance
θ
JA
for 20-pin TSSOP, Forced Convection
0
200
500
Single-Layer PCB, JEDEC Standard Test Boards
Multi-Layer PCB, JEDEC Standard Test Boards
NOTE:
Most modern PCB designs use multi-layered boards. The data in the second row pertains to most designs.
114.5°C/W
73.2°C/W
98.0°C/W
66.6°C/W
88.0°C/W
63.5°C/W
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ICS85356AMIT | 2:1, DIFFERENTIAL-TO-3.3V DUAL LVPECL / ECL CLOCK MULTIPLEXER |
| ICS85357-01 | 4:1 OR 2:1 DIFFERENTIAL-TO-3.3V LVPECL / ECL CLOCK MULTIPLEXER |
| ICS85357-11 | 4:1 OR 2:1, CRYSTAL OSCILLATOR-TO-3.3V LVPECL / ECL MULTIPLEXER |
| ICS85357AG-01 | 4:1 OR 2:1 DIFFERENTIAL-TO-3.3V LVPECL / ECL CLOCK MULTIPLEXER |
| ICS85357AG-01T | 4:1 OR 2:1 DIFFERENTIAL-TO-3.3V LVPECL / ECL CLOCK MULTIPLEXER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ICS85356AMILF | 功能描述:IC CLOCK MUX 2:1 900MHZ 20-SOIC RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘緩沖器，驅(qū)動(dòng)器 系列:HiPerClockS™ 標(biāo)準(zhǔn)包裝:74 系列:- 類型:扇出緩沖器（分配） 電路數(shù):1 比率 - 輸入:輸出:1:10 差分 - 輸入:輸出:是/是 輸入:HCSL, LVCMOS, LVDS, LVPECL, LVTTL 輸出:HCSL，LVDS 頻率 - 最大:400MHz 電源電壓:3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:32-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:32-QFN（5x5） 包裝:管件 |
| ICS85356AMILFT | 功能描述:IC CLOCK MUX 2:1 900MHZ 20-SOIC RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘緩沖器，驅(qū)動(dòng)器 系列:HiPerClockS™ 標(biāo)準(zhǔn)包裝:74 系列:- 類型:扇出緩沖器（分配） 電路數(shù):1 比率 - 輸入:輸出:1:10 差分 - 輸入:輸出:是/是 輸入:HCSL, LVCMOS, LVDS, LVPECL, LVTTL 輸出:HCSL，LVDS 頻率 - 最大:400MHz 電源電壓:3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:32-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:32-QFN（5x5） 包裝:管件 |
| ICS85357AG-01LF | 功能描述:IC CLOCK MUX 4:1/2:1 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘緩沖器，驅(qū)動(dòng)器 系列:HiPerClockS™ 標(biāo)準(zhǔn)包裝:74 系列:- 類型:扇出緩沖器（分配） 電路數(shù):1 比率 - 輸入:輸出:1:10 差分 - 輸入:輸出:是/是 輸入:HCSL, LVCMOS, LVDS, LVPECL, LVTTL 輸出:HCSL，LVDS 頻率 - 最大:400MHz 電源電壓:3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:32-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:32-QFN（5x5） 包裝:管件 |
| ICS85357AG-01LFT | 功能描述:IC CLOCK MUX 4:1/2:1 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘緩沖器，驅(qū)動(dòng)器 系列:HiPerClockS™ 標(biāo)準(zhǔn)包裝:74 系列:- 類型:扇出緩沖器（分配） 電路數(shù):1 比率 - 輸入:輸出:1:10 差分 - 輸入:輸出:是/是 輸入:HCSL, LVCMOS, LVDS, LVPECL, LVTTL 輸出:HCSL，LVDS 頻率 - 最大:400MHz 電源電壓:3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:32-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:32-QFN（5x5） 包裝:管件 |
| ICS85357AG-11LF | 功能描述:IC CLOCK MUX 4:1/2:1 20-TSSOP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘緩沖器，驅(qū)動(dòng)器 系列:HiPerClockS™ 標(biāo)準(zhǔn)包裝:74 系列:- 類型:扇出緩沖器（分配） 電路數(shù):1 比率 - 輸入:輸出:1:10 差分 - 輸入:輸出:是/是 輸入:HCSL, LVCMOS, LVDS, LVPECL, LVTTL 輸出:HCSL，LVDS 頻率 - 最大:400MHz 電源電壓:3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:32-VFQFN 裸露焊盤 供應(yīng)商設(shè)備封裝:32-QFN（5x5） 包裝:管件 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。