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參數資料
| 型號： | LMS75LBC176MX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 通用總線功能 |
| 英文描述： | Differential Bus Transceivers |
| 中文描述： | LINE TRANSCEIVER, PDSO8 |
| 封裝： | SOIC-8 |
| 文件頁數： | 9/10頁 |
| 文件大小： | 161K |
| 代理商： | LMS75LBC176MX |
Application Information
POWER LINE NOISE FILTERING
A factor to consider in designing power and ground is noise
filtering. A noise filtering circuit is designed to prevent noise
generated by the integrated circuit (IC) as well as noise
entering the IC from other devices. A common filtering
method is to place by-pass capacitors (C
bp
) between the
power and ground lines.
Placing a by-pass capacitor (C
bp
) with the correct value at
the proper location solves many power supply noise prob-
lems. Choosing the correct capacitor value is based upon
the desired noise filtering range. Since capacitors are not
ideal, they may act more like inductors or resistors over a
specific frequency range. Thus, many times two by-pass
capacitors may be used to filter a wider bandwidth of noise.
It is highly recommended to place a larger capacitor, such as
10μF, between power supply pin and ground to filter out low
frequencies and a 0.1μF to filter out higher frequencies.
By-pass capacitors must be mounted as close as possible to
the IC to be effective. Long leads produce higher impedance
at higher frequencies due to stray inductance. Thus, this will
reduce the by-pass capacitor’s effectiveness. Surface
mounting chip capacitors are the best solution because they
have lower inductance.
20047912
FIGURE 9. Placement of by-pass Capacitors, C
bp
L
www.national.com
9
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| LMS75LBC176MX/NOPB | 功能描述:TXRX DIFF BUS RS422/485 8-SOIC RoHS:是 類別:集成電路 (IC) >> 接口 - 驅動器，接收器，收發器 系列:- 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:25 系列:- 類型:收發器 驅動器/接收器數:2/2 規程:RS232 電源電壓:4.5 V ~ 5.5 V 安裝類型:通孔 封裝/外殼:16-DIP（0.300"，7.62mm） 供應商設備封裝:16-PDIP 包裝:管件 |
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| LMS8117ADT-1.8/NOPB | 功能描述:IC REG LDO 1.8V 1A TO-252 RoHS:是 類別:集成電路 (IC) >> PMIC - 穩壓器 - 線性 系列:- 標準包裝:1 系列:- 穩壓器拓撲結構:正，固定式 輸出電壓:4V 輸入電壓:最高 16V 電壓 - 壓降（標準）:0.28V @ 150mA 穩壓器數量:1 電流 - 輸出:150mA 電流 - 限制（最小）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:5-VFBGA 供應商設備封裝:5-uSMD 包裝:Digi-Reel® 其它名稱:LP2985AIBP-4.0DKR |
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