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闁辫畝锛�21
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銆�銆�灏佽褰㈠紡锛欴IP-14, SOIC-14
CD74HCT21 鎻愪緵浜嗛珮搴﹀彲闈犵殑闆欒几鍏ヨ垏闁�閭忚集鍔熻兘銆傚叾涓昏鐗规�у寘鎷細
銆�銆�1. 瀵浕澹撹寖鍦嶆搷浣�锛屾敮鎸�2V鍒�6V鐨勯浕婧愰浕澹�銆�
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銆�銆�6. 寮曡叧甯冨眬娓呮櫚锛屼究浜嶱CB甯冪窔鍜岀剨鎺�銆�
CD74HCT21 涓昏鎳夌敤浜庡悇绋渶瑕侀倧杓垏鍔熻兘鐨勫牬鍚堬紝濡傦細
銆�銆�1. 鏁�(sh霉)瀛椾俊铏熻檿鐞嗕腑鐨勯倧杓亱绠�銆�
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銆�銆�3. 鏁�(sh霉)鎿�(j霉)閲囬泦绯荤当(t菕ng)涓殑鏁�(sh霉)鎿�(j霉)绡╅伕銆�
銆�銆�4. 宓屽叆寮忕郴绲�(t菕ng)涓殑鐙�鎱�(t脿i)妾㈡脯妯″銆�
銆�銆�5. 澶氱ó宸ユキ(y猫)鑷嫊鍖栬ō鍌欏拰娑堣不椤為浕瀛愮敘鍝佷腑銆�
SN74HCT21, MC74HCT21
