?Pin?description??Symbol??????Pin???????Description??

1A??????????1????????negative-edge?triggered?input?1（負邊沿觸發(fā)輸入）?

1B??????????2????????positive-edge?triggered?input?1（正面邊緣觸發(fā)輸入）?

1RD?????????3????????direct?reset?LOW?and?positive-edge?triggered?input?1?（直接復位低和正邊緣觸發(fā)輸入）

?1Q?????????4????????active?LOW?output?1（低電平輸出）?

2Q??????????5????????active?HIGH?output?2（高電平輸出）??

2CEXT??????6????????external?capacitor?connection?2（外部電容連接）?

2REXT/CEXT?7????????external?resistor?and?capacitor?connection?2（外部電容?和電阻連接）?

GND????????8?????????ground?(0V)??

2A??????????9?????????negative-edge?triggered?input?2（負邊沿觸發(fā)輸入）

?2B?????????10????????positive-edge?triggered?input?2（正邊沿觸發(fā)輸入）?

2RD????11????????direct?reset?LOW?and?positive-edge?triggered?input?2???????????????????????（直接復位低和正邊緣觸發(fā)輸入）?

2Q??????????12????????active?LOW?output?2?

1Q??????????13????????active?HIGH?output?1??

1CEXT??????14????????external?capacitor?connection?1??

1REXT/CEXT?15????????external?resistor?and?capacitor?connection?1?

VCC????????16?????????supply?voltage

?

總結(jié)

以上是生活随笔為你收集整理的74HC123D 引脚介绍及应用的全部內(nèi)容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網(wǎng)站內(nèi)容還不錯，歡迎將生活随笔推薦給好友。