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switch

switch是交换机,它的前身是网桥。交换机是使用硬件来完成以往网桥使用软件来完成过滤、学习和转发过程的任务。switch速度比HUB快,这是由于HUB不知道目标地址在何处,发送数据到所有的端口。而switch中有一张转发表,如果知道目标地址在何处,就把数据发送到指定地点,如果它不知道就发送到所有的端口。这样过滤可以帮助降低整个网络的数据传输量,提高效率。但然交换机的功能还不止如此,它可以把网络拆解成网络分支、分割网络数据流,隔离分支中发生的故障,这样就可以减少每个网络分支的数据信息流量而使每个网络更有效,提高整个网络效率。目前有使用switch代替HUB的趋势。
  • AT89S52-24单片机最小系统开发板ALTIUM设计硬件原理图+PCB文件 2层板设计 大小为1

    AT89S52-24单片机最小系统开发板ALTIUM设计硬件原理图+PCB文件,2层板设计,大小为121x149mm,Altium Designer 设计的工程文件,包括完整的原理图及PCB文件,可以用Altium(AD)软件打开或修改,可作为你的产品设计的参考。主要器件型号列表如下:Library Component Count : 14Name                Description----------------------------------------------------------------------------------------------------AT89S52-P           8 位微处理器/40引脚CAP                 CapacitorCAPACITOR POL       CapacitorCRYSTAL             CrystalD Connector 9       Receptacle Assembly, 9 Position, Right AngleHeader 2            Header, 2-PinHeader 4            Header, 4-PinHeader 5X2          Header, 5-Pin, Dual rowLED                 MAX232PZ_9                排针——9RES2SW-DPST             Double-Pole, Single-Throw switchSW-PB               switch

    标签: at89s52 单片机

    上传时间: 2021-11-17

    上传用户:

  • AT89S52单片机主8入8出继电器工控主板ALTIUM设计硬件原理图+PCB文件

    AT89S52单片机主8入8出继电器工控主板ALTIUM设计硬件原理图+PCB文件,2层板设计,大小为121x149mm,Altium Designer 设计的工程文件,包括完整的原理图及PCB文件,可以用Altium(AD)软件打开或修改,可作为你的产品设计的参考。主要器件型号列表如下:Library Component Count : 25Name                Description----------------------------------------------------------------------------------------------------24LC02AJKG                按键开关AT89S52-P           8 位微处理器/40引脚CAP                 CapacitorCAPACITOR POL       CapacitorCPDR                瓷片电容CRYSTAL             CrystalD Connector 9       Receptacle Assembly, 9 Position, Right AngleDG                  电感DJDR                电解电容GO                  光耦Header 5X2          Header, 5-Pin, Dual rowJDQYCK              继电器——1常开1常闭LED                 发光二极管LM2576HVT-3.3       Simple switcher 3A Step Down Voltage RegulatorMAX232              NPN                 NPN Bipolar TransistorPZ_2                排针——2PZ_3                排针——3RES2Res                 电阻Res PZ_8            8位排阻SW-DPST             Double-Pole, Single-Throw switchWY2JG               稳压二级管ZL2JG               整流二极管

    标签: at89s52 继电器

    上传时间: 2021-11-17

    上传用户:kingwide

  • CH340C+RT9013+MINI USB接口板 AD设计硬件原理图+PCB文件 ALTIUM设计

    CH340C+RT9013+MINI USB接口板 AD设计硬件原理图+PCB文件,ALTIUM设计的2层板设计,包括完整的原理图和PCB文件,主要器件如下:Library Component Count : 12Name                Description----------------------------------------------------------------------------------------------------CAP                 CapacitorCC2640EM            CC2630 ModuleCH340               CH340 USB 2 UARTCON11               Connector 11pinsCON12               Connector 12pinsCON3X2              Connector 5*2LED                 LEDRES                 ResistorRT9013              RT9013 3.3Vswitch              switch 6*6USB1                USB ConnectorsXDS110-Lte          XDS110-Lite Target Interface

    标签: ch340c rt9013 usb 接口 ad设计

    上传时间: 2021-11-24

    上传用户:canderile

  • USB_MICRO USB_MNI USB扁口座 TF卡槽 SOIC8 LQFP32芯片ALTIU

    USB_MICRO USB_MNI  USB扁口座 TF卡槽 SOIC8 LQFP32芯片ALTIUM 库(3D PCB封装库), 3D封装,已在项目中使用,可以做为你的设计参考。详细列表如下:Component Count : 94Component Name-----------------------------------------------32165032-8MHZAMS1117ANT2AntennaBATbuzzerCapCAP-0805CAP-3216CD32Crystal Oscillator 3225HC-06KEY-2PINLED-0603LQFP-100LQFP32LQFP44LQFP44 10X10_LLQFP44 10X10_MLQFP44 10X10_NLQFP48LQFP48 7X7_LLQFP48 7X7_MLQFP48 7X7_NLQFP64 10x10_LLQFP64 10x10_MLQFP64 10x10_NMagMOTONRF24L01NRF24L01-modeOLED-0.96-PIN7QFN20_4X4QFN24_4X4QFN32_5X5remoteRES-0603RFX2401CRPSG90SH1.0mm-4PINSH1.0MM-5PINSH1.0mm-6PINSMA-ANTSMA/DO-214SOIC-8SOP16SOT-23-3SOT-23-5SOT-89SOT-223SPL06-001STM32F030C8T6STM32F030F4P6STM32F103C8T6straight-1x2pinstraight-1x2pin - duplicatestraight-1x2pin - duplicate1straight-1x3pinstraight-1x3pin - duplicatestraight-1x3pin - duplicate1straight-1x4pinstraight-1x4pin - duplicatestraight-1x5pinstraight-1x8pinstraight-1x8pin - duplicatestraight-2x2pinstraight-2x3pinstraight-2x4pinstraight-2x5pinSW-NO/OFF-PIN3SW-SMD1SW-SMD2switch-DIP-6*6*7SX1308TF-CARDTO-263-5TP4056USBUSB_MICROUSB_MNI_BUSB-MICRO-1winding_1x2pinwinding_1x3pinwinding_1x4pinwinding_1x5pinwinding_1x8pinwinding_2x2pinwinding_2x3pinwinding_2x4pinwinding_2x5pinXTAL-5070/SMDXTAL-QC49/SMD

    标签: usb

    上传时间: 2021-12-02

    上传用户:aben

  • TMS320F28035 DSP最小核心板开发板ALTIUM设计原理图 无PCB板图

    TMS320F28035 DSP最小核心板开发板ALTIUM设计原理图,无PCB板图。原理图已在项目中使用,包括CAN通信电路和瓷隔离电路等,可以做为你的设计参考,所用器件型号如下:ADUM1201AT24CXXBAV99               R26010005CAP                 CapacitorHeader 4            Header, 4-PinHeader 4X2          Header, 4-Pin, Dual rowINDUCTORL2                  LM317               R25040043NTC                 R27040030OPTOISORES                 R20190049RES1                SN65HVD230/SO8SW-SPST             Single-Pole, Single-Throw switchTL431TMS320F28035-80XTAL                Crystal Oscillator

    标签: tms320f28035 dsp

    上传时间: 2021-12-22

    上传用户:trh505

  • PW2606B.pdf规格书下载

    The PW2606B is a front-end over voltage and over current protection device. It achieves wide inputvoltage range from 2.5VDC to 40VDC. The over voltage threshold can be programmed externally orset to internal default setting. The low resistance of integrated power path nFET switch ensures betterperformance for battery charging system applications. It can deliver up to 1A current to satisfy thebattery supply system. It integrates the over-temperature protection shutdown and auto-recoverycircuit with hysteresis to protect against over current events

    标签: pw2606b

    上传时间: 2022-02-11

    上传用户:

  • PW2601_2.0.pdf规格书下载

    The PW2601 is a charger front-end integrated circuit designed to provide protection to Li-ionbatteries from failures of charging circuitry. The device monitors the input voltage, battery voltageand the charging current to make sure all three parameters are operated in normal range. Thedevice will switch off internal MOSFET to disconnect IN to OUT to protect load when any of inputvoltage, output current exceeds the threshold. The Over temperature protection (OTP) functionmonitors chip temperature to protect the device. The PW2601 also can protect the system’sbattery from being over charged by monitors the battery voltage continuously. The deviceoperates like a linear regulator, maintaining a 5.1V output with input voltages up to the input overvoltage threshold.The PW2601 is available in DFN-2x2-8L package. Standard products are Pb-free and Halogenfree

    标签: pw2601

    上传时间: 2022-02-11

    上传用户:

  • PW2330-2.0.pdf规格书下载

    PW2330 develops a high efficiency synchronous step down DC-DC converter capable of delivering3A output current. PW2330 operates over a wide input voltage range from 4.5V to 30V andintegrates main switch and synchronous switch with very low RDS(ON) to minimize the conductionloss. PW2330 adopts the proprietary instant PWM architecture to achieve fast transient responsesfor high step down applications and high efficiency at light loads. In addition, it operates atpseudo-constant frequency of 500kHz under continuous conduction mode to minimize the size ofinductor and capacitor

    标签: pw2330

    上传时间: 2022-02-11

    上传用户:

  • PW2312_2.0.pdf规格书下载

    The PW2312 is a high frequency, synchronous, rectified, step-down, switch-mode converter withinternal power MOSFETs. It offers a very compact solution to achieve a 1.5A peak output currentover a wide input supply range, with excellent load and line regulation.The PW2312 requires a minimal number of readily available, external components and is available ina space saving SOT23-6 package.

    标签: pw2312

    上传时间: 2022-02-11

    上传用户:qingfengchizhu

  • PW2205-2.0.pdf规格书下载

    PW2205 develops a high efficiency synchronous step-down DC-DC converter capable of delivering5A output current. PW2205 operates over a wide input voltage range from 4.5V to 30V andintegrates main switch and synchronous switch with very low RDS(ON) to minimize the conductionloss.PW2205 adopts the instant PWM architecture to achieve fast transient responses for high step downapplications and high efficiency at light loads. In addition, it operates at pseudo-constant frequencyof 500kHz under continuous conduction mode to minimize the size of inductor and capacitor

    标签: pw2205

    上传时间: 2022-02-11

    上传用户: