闆绘簮闆诲�擄��4.75V 鑷� 5.25V
銆�銆�宸ヤ綔婧�搴﹁寖鍦嶏��-55掳C 鑷� +125掳C
銆�銆�杓稿嚭闆绘祦锛氭渶澶� 16mA
銆�銆�杓稿叆闆绘祦锛氭渶澶� 卤1mA
銆�銆�鍌虫挱寤堕伈鏅�(sh铆)闁擄細鏈�澶� 9ns
銆�銆�灏佽�濋�炲瀷锛欴IP-14銆丼OIC-14

SN54ALS257A 鐨勪富瑕佺壒榛�(di菐n)鏄�鍏堕洐閫氶亾瑷�(sh猫)瑷�(j矛)锛屾瘡閫氶亾鍖呭惈鍏╁��(g猫)杓稿叆绔�銆傝┎鑺�鐗囧叿鍌欎互涓嬪��(y艒u)鍕�(sh矛)锛�
銆�銆�1. 楂橀�熼亱(y霉n)琛岃兘鍔�锛岄仼鍚堥渶瑕佸揩閫熼熆鎳�(y墨ng)鐨勭郴绲�(t菕ng)銆�
銆�銆�2. 鍦ㄨ純瀵�鐨勫伐浣滄韩搴﹁寖鍦嶅��(n猫i)琛ㄧ従(xi脿n)绌�(w臎n)瀹�锛岄仼鎳�(y墨ng)鎯″姡鐠�(hu谩n)澧�銆�
銆�銆�3. 鍏峰倷杓冧綆鐨勯潨鎱�(t脿i)闆绘祦娑堣��锛屾湁鍔╀簬娓涘皯鑳借��銆�
銆�銆�4. 杓稿嚭椹�(q奴)鍕�(d貌ng)鑳藉姏寮�(qi谩ng)锛屽彲浠ヨ紩鏉鹃﹨(q奴)鍕�(d貌ng)澶氬��(g猫)璨�(f霉)杓�銆�
銆�銆�5. 寮曡叧甯冨眬妯�(bi膩o)婧�(zh菙n)鍖栵紝渚夸簬鑸囧叾浠� TTL 鍜� CMOS 鍣ㄤ欢闆嗘垚銆�
銆�銆�閫欑ó瑷�(sh猫)瑷�(j矛)浣垮緱 SN54ALS257A 鎴愮偤妲�(g貌u)寤哄京(f霉)闆滈倧杓�缍�(w菐ng)绲�(lu貌)鐨勭悊鎯抽伕鎿囥��

SN54ALS257A 涓昏�佹��(y墨ng)鐢ㄤ簬鍚勭ó鏁�(sh霉)瀛楅浕瀛愯ō(sh猫)鍌欎腑锛屽叿楂斿寘鎷�锛�
銆�銆�1. 鏁�(sh霉)鎿�(j霉)铏曠悊鍜岄�氫俊绯荤当(t菕ng)涓�鐨勯倧杓�鎺у埗銆�
銆�銆�2. 宸ユキ(y猫)鑷�鍕�(d貌ng)鍖栬ō(sh猫)鍌欎腑鐨勪俊铏�(h脿o)鍒囨彌銆�
銆�銆�3. 瑷�(j矛)绠楁��(j墨)澶栧湇瑷�(sh猫)鍌欏拰宓屽叆寮忕郴绲�(t菕ng)鐨勯倧杓�閬�(y霉n)绠�銆�
銆�銆�4. 娓�(c猫)瑭﹁垏娓�(c猫)閲�?j墨)x鍣ㄤ腑鐨勫�氳矾寰�(f霉)鐢ㄣ��
銆�銆�5. 娑堣不(f猫i)椤為浕瀛愮敘(ch菐n)鍝佷腑鐨勪俊铏�(h脿o)瑾�(di脿o)绡�(ji茅)鍜屾帶鍒�銆�
銆�銆�鐢变簬鍏堕珮鍙�闈犳�э紝SN54ALS257A 鍦ㄩ渶瑕侀暦(zh菐ng)鏅�(sh铆)闁撶┅(w臎n)瀹氬伐浣滅殑鍫�(ch菐ng)鍚堜腑灏ょ偤閬╃敤銆�

SN74ALS257A