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https://e2e.ti.com/support/amplifiers-group/amplifiers/f/amplifiers-forum/1268230/is-there-a-pcn-or-discontinuation-notice-for-this-part-formally-national-semiconductor-corp-p-n-lm193h-883c
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LM193H/883仍然存在；请参阅 LM193QML。
显然、C 后缀已在 National Semiconductor 被 Texas Instruments 收购之前被丢弃。
大家好、Thomas：
军用器件(-MIL、-QML、/883等)不处于 PCN 下。 他们将继续使用相同的芯片。
只有大容量商用 LM2/393/2903器件处于 PCN 下。
