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闁辫畝锛�15
SN54HCT74 鏄竴娆鹃洐D鍨嬭Ц鐧�(f膩)鍣ㄩ泦鎴愰浕璺紝灞簬HCT绯诲垪閭忚集鍣ㄤ欢銆傝┎鑺墖閲囩敤CMOS宸ヨ棟鍒堕�狅紝鑳藉鎻愪緵楂橀﹨(q奴)鍕曡兘鍔涘拰浣庡姛鑰楁�ц兘锛岄仼鍚堢敤浜庡悇绋暩(sh霉)瀛楅浕璺噳鐢�銆傚畠鍏锋湁鍏╁�嬬崹绔嬬殑D鍨嬭Ц鐧�(f膩)鍣�锛屾瘡鍊嬭Ц鐧�(f膩)鍣ㄩ兘鏈夋暩(sh霉)鎿�(j霉)杓稿叆锛圖锛�銆佹檪閻樿几鍏ワ紙CLK锛�銆佺洿鎺ョ疆浣嶏紙SD锛夊拰鐩存帴寰╀綅锛圧D锛夌鍙�銆�
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閭忚集椤炲瀷锛氶洐D鍨嬭Ц鐧�(f膩)鍣�
銆�銆�闆绘簮闆诲(VCC)锛�2V 鑷� 6V
銆�銆�杓稿嚭闆绘祦(Io)锛�-24mA锛堜綆闆诲钩锛�/ 24mA锛堥珮闆诲钩锛�
銆�銆�鍌虫挱寤堕伈鏅傞枔(tpd)锛氭渶澶�12ns
銆�銆�宸ヤ綔婧害鑼冨湇锛�-55掳C 鑷� 125掳C
銆�銆�灏佽褰㈠紡锛欴IP14銆丼OIC14
SN54HCT74 鐨勪富瑕佺壒鎬у寘鎷細
銆�銆�1. 楂橀�烪CT鎶�琛�(sh霉)锛岀⒑?锛熺剸鍋捐Q鍜屼綆寤堕伈鎿嶄綔銆�
銆�銆�2. 鍏锋湁鐩存帴缃綅(SD)鍜岀洿鎺ュ京浣�(RD)鍔熻兘锛屽厑瑷辩敤鎴堕�氶亷閫欏叐鍊嬪紩鑵冲挤鍒惰ō缃垨寰╀綅瑙哥櫦(f膩)鍣ㄧ媭鎱�(t脿i)銆�
銆�銆�3. TTL鍏煎鎬�锛屽彲杓曟澗鑸囩従(xi脿n)鏈塗TL绯荤当(t菕ng)闆嗘垚銆�
銆�銆�4. 姣忓�嬭Ц鐧�(f膩)鍣ㄩ兘鏀寔鐛ㄧ珛鐨勬暩(sh霉)鎿�(j霉)杓稿叆(D)鑸囨檪閻樹俊铏�(CLOCK)锛屾柟渚挎(g貌u)寤哄京闆滈倧杓浕璺�銆�
銆�銆�5. 鑳藉鍦ㄨ純瀵殑宸ヤ綔婧害鑼冨湇鍏�(n猫i)绌�(w臎n)瀹氶亱琛�锛岄仼鐢ㄤ簬宸ユキ(y猫)鍙婅粛浜嬬挵(hu谩n)澧冧腑鐨勬噳鐢ㄣ��
銆�銆�6. 灏佽鏂瑰紡澶氭ǎ鍖�锛屼究浜庝笉鍚岃ō瑷堥渶姹傜殑閬告搰锛屽鍌崇当(t菕ng)鐨凞IP灏佽鍜屾洿绶婃箠鐨凷OIC琛ㄩ潰璨艰灏佽銆�
SN54HCT74 寤ｆ硾鎳夌敤浜庡悇绋暩(sh霉)瀛楅浕璺ō瑷堜腑锛屽叾鍏稿瀷鎳夌敤闋�(l菒ng)鍩熷寘鎷細
銆�銆�1. 鏁�(sh霉)鎿�(j霉)閹栧瓨鍜屽瓨鍎�锛屽湪闇�瑕佷繚瀛樹腑闁撹▓绠楃祼(ji茅)鏋滄垨鑰呮毇瀛樻暩(sh霉)鎿�(j霉)鏅備娇鐢ㄣ��
銆�銆�2. 鍒嗛牷鍣ㄩ浕璺�锛屽埄鐢ㄨЦ鐧�(f膩)鍣ㄧ殑鏅傞悩杓稿叆鍜岃几鍑洪棞(gu膩n)绯诲鐝�(xi脿n)闋荤巼鍒嗗壊鍔熻兘銆�
銆�銆�3. 绉讳綅瀵勫瓨鍣ㄦ(g貌u)寤�锛屽皣澶氬�婼N54HCT74绱氳伅(li谩n)璧蜂締鍙互褰㈡垚绉讳綅瀵勫瓨鍣ㄣ��
銆�銆�4. 鍚屾瑷堟暩(sh霉)鍣ㄨō瑷�锛岀祼(ji茅)鍚堝叾浠栭倧杓杸鍙互鎼缓鍚屾瑷堟暩(sh霉)鍣ㄧ瓑寰╅洔閭忚集妯″銆�
銆�銆�5. 宸ユキ(y猫)鎺у埗鍜岃嚜鍕曞寲绯荤当(t菕ng)锛岀敱浜庡叾鑹ソ鐨勬姉骞叉摼鑳藉姏锛岄仼鍚堝湪鎯″姡鐠�(hu谩n)澧冧笅宸ヤ綔銆�
銆�銆�6. 杌嶄簨鍜岃埅绌鸿埅澶╅牁(l菒ng)鍩�锛屽緱鐩婁簬鍏跺婧崁(q奴)鐗规��锛屽彲浠ュ湪妤电姊濅欢涓嬩繚鎸佹甯稿伐浣�銆�
SN74HCT74
