* : Products list (parametric search)
* : Products list (parametric search)
* : Products list (parametric search)
* : Products list (parametric search)
* : Products list (parametric search)
* : Products list (parametric search)
* : Products list (parametric search)
* : Products list (parametric search)
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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.Please note that this cross reference is based on TOSHIBA's estimate of compatibility with other manufacturers' products, based on other manufacturers' published data, at the time the data was collected.TOSHIBA is not responsible for any incorrect or incomplete information. Information is subject to change at any time without notice.
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一般来说,应按以下顺序应用功率和输入,以满足绝对最大额定值。
如果通用逻辑IC的电源和输入信号顺序错误,可能会导致IC或设备故障、毁坏或损坏,因此必须小心。
(1)连接GND
(2)连接VCC(导通)
(3)连接输入信号(导通)
关闭电源的顺序与打开电源的顺序相反。
不带输入容限功能的IC(如TC74HC/HCT系列)的输入端有一个保护二极管,如图1所示。如果顺序不正确,不必要的电流将通过该二极管流向输入端和输出端,进而损坏IC和设备。
TC74VHC/VHCT、TC74LCX、TC74VCX(没有用于从输入端到电源的正向的输入保护二极管)等具有输入容限功能的产品,即使在未通电时也可以施加输入信号。因此,没有(2)和(3)的加载顺序要求。
以下文档也包含相关信息。