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闁辫畝锛�20
74HC157鏄竴娆鹃洐鍥涢伕涓�锛�2-to-1锛夊璺京鐢ㄥ櫒锛屽爆浜�74HC绯诲垪鐨勯珮閫烠MOS閭忚集鍣ㄤ欢銆傝┎鑺墖鍏佽ū寰炲叐绲勭崹绔嬬殑鍥涗綅杓稿叆涓伕鎿囦竴绲�锛屽苟灏囨墍閬告暩(sh霉)鎿�(j霉)鍌抽仦鍒拌几鍑虹鍙ｃ�傚畠寤ｆ硾鎳夌敤浜庢暩(sh霉)瀛楅浕璺ō瑷堜腑锛岀敤浜庢暩(sh霉)鎿�(j霉)閬告搰鍜屽偝杓稿姛鑳�銆�
銆�銆�74HC157鍏锋湁浣庡姛鑰�銆侀珮闁嬮棞閫熷害浠ュ強瀵浕婧愰浕澹撹寖鍦嶇瓑鐗归粸锛岄潪甯搁仼鍚堝悇绋秷璨婚闆诲瓙銆佸伐妤�(y猫)鎺у埗鍜岄�氫俊瑷倷涓殑鎳夌敤銆傚叾灏佽褰㈠紡澶氭ǎ锛屽父瑕嬬殑鍖呮嫭SOIC鍜孌IP绛夛紝渚夸簬涓嶅悓鍫存櫙涓嬬殑浣跨敤銆�
閭忚集椤炲瀷锛�2-to-1澶氳矾寰╃敤鍣�
銆�銆�閫氶亾鏁�(sh霉)閲忥細2绲�4浣嶈几鍏�
銆�銆�闆绘簮闆诲(VCC)锛�2V~6V
銆�銆�宸ヤ綔婧害鑼冨湇锛�-40鈩冭嚦+85鈩�
銆�銆�鍌虫挱寤堕伈鏅傞枔锛氭渶澶�9ns锛堝吀鍨嬪�硷級
銆�銆�杓稿叆闆绘祦锛毬�1渭A锛堟渶澶у��锛屾瘡寮曡叧锛�
銆�銆�杓稿嚭闆绘祦锛毬�25mA锛堟渶澶у�硷級
銆�銆�灏佽褰㈠紡锛歋OIC, DIP
74HC157鐨勪富瑕佺壒鎬у寘鎷細
銆�銆�1. 楂橀�熼亱琛岃兘鍔涳細鐢变簬閲囩敤CMOS鎶�琛�(sh霉)锛岀⒑淇濅簡杓冧綆鐨勫偝鎾欢閬叉檪闁擄紝閬╃敤浜庨珮闋绘搷浣滅挵(hu谩n)澧�銆�
銆�銆�2. 浣庡姛鑰楄ō瑷堬細闈滄厠(t脿i)闆绘祦闈炲父灏�锛屽湪鏁村�嬪伐浣滈浕澹撹寖鍦嶅収(n猫i)鍧囪兘淇濇寔杓冧綆鍔熻��銆�
銆�銆�3. 瀵浕婧愰浕澹撹寖鍦嶏細鏀寔2V鑷�6V鐨勯浕婧愰浕澹擄紝澧炲挤浜嗗湪涓嶅悓绯荤当(t菕ng)涓殑鍏煎鎬�銆�
銆�銆�4. 楂樻姉鍣�ц兘锛氳几鍏ュ拰杓稿嚭鍏锋湁杓冨挤鐨勫櫔鑱插闄�锛屼繚璀変簡淇¤櫉鐨勫畬鏁存�с��
銆�銆�5. 澶氬姛鑳芥�э細閫氶亷绨″柈鐨勬帶鍒朵俊铏熷嵆鍙鐝�(xi脿n)鏁�(sh霉)鎿�(j霉)鐨勯伕鎿囪垏鍒囨彌锛岀啊鍖栦簡闆昏矾瑷▓銆�
74HC157寤ｆ硾鎳夌敤浜庝互涓嬮牁鍩燂細
銆�銆�1. 鏁�(sh霉)鎿�(j霉)閬告搰鑸囧偝杓革細鍙敤浜庡井铏曠悊鍣ㄧ郴绲�(t菕ng)涓殑鏁�(sh霉)鎿�(j霉)閫氳矾閬告搰銆�
銆�銆�2. 鏁�(sh霉)瀛椾俊铏熻檿鐞嗭細閬╁悎闊抽牷銆佽闋讳互鍙婂叾浠栨暩(sh霉)瀛椾俊铏熺殑鍒囨彌銆�
銆�銆�3. 宸ユキ(y猫)鑷嫊鍖栵細鍦ㄦ帶鍒剁郴绲�(t菕ng)涓敤浣滃璺暩(sh霉)鎿�(j霉)閲囬泦銆�
銆�銆�4. 娑堣不椤為浕瀛愮敘(ch菐n)鍝侊細濡傞浕瑕�銆侀煶闊胯ō鍌欎腑鐨勪俊铏熷垏鎻�銆�
銆�銆�5. 閫氫俊瑷倷锛氱敤浜庢暩(sh霉)鎿�(j霉)鍖呯殑閬告搰鍜岃綁(zhu菐n)鐧�(f膩)绛夊姛鑳�銆�
銆�銆�姝ゅ锛岃┎鑺墖閭勫彲鐢ㄤ簬娓│鍎�鍣ㄣ�佽▓绠楁澶栬ō绛夐渶瑕佸璺京鐢ㄧ殑鍫村悎銆�
74HCT157, SN74HC157, DM74HC157
