SN74HC251DR 鏅�(sh铆)闁擄細2025/5/12 16:18:33 闁辫畝锛�20

SN74HC251DR 鏄竴娆剧敱寰峰窞鍎€鍣� (TI) 鐢熺敘(ch菐n)鐨勯珮閫� CMOS 8 閫氶亾澶氳矾寰�(f霉)鐢ㄥ櫒/瑙ｅ京(f霉)鐢ㄥ櫒鑺墖銆傝┎鍣ㄤ欢灞簬 74HC 绯诲垪锛屽叿鏈変綆鍔熻€楀拰楂橀枊(k膩i)闂�(gu膩n)閫熷害鐨勭壒榛�(di菐n)銆傚畠鑳藉鏍规摎(j霉)杓稿叆鐨勯伕鎿囦俊铏�(h脿o)灏囧鍊�(g猫)鏁�(sh霉)鎿�(j霉)婧愪腑鐨勪竴鍊�(g猫)鍌宠几?sh霉)鎹锋暤榫�?锛岄仼鐢ㄤ簬闇€瑕佸璺伕鎿囩殑鎳�(y墨ng)鐢ㄥ牬(ch菐ng)鏅�銆�
銆€銆€閫欐鑺墖鍏�(n猫i)閮ㄩ泦鎴愪簡 8 鍊�(g猫)鐛�(d煤)绔嬬殑鏁�(sh霉)鎿�(j霉)閫氶亾锛岄€氶亷(gu貌) 3 浣嶄簩閫�(j矛n)鍒跺湴鍧€绶氾紙A0銆丄1 鍜� A2锛変締(l谩i)閬告搰鍏朵腑涓€璺綔鐐鸿几鍑恒€傛澶�锛岄倓鍖呭惈涓€鍊�(g猫)浣胯兘杓稿叆寮曡叧锛圙锛�锛岀敤浜庡暉鐢ㄦ垨绂佺敤鏁村€�(g猫)澶氳矾寰�(f霉)鐢ㄥ櫒鐨勫姛鑳姐€�

鍙冩暩(sh霉)

閭忚集椤炲瀷锛�8 閫氶亾澶氳矾寰�(f霉)鐢ㄥ櫒/瑙ｅ京(f霉)鐢ㄥ櫒
銆€銆€灏佽椤炲瀷锛欴SSOP-20
銆€銆€宸ヤ綔闆诲鑼冨湇锛�2V 鑷� 6V
銆€銆€鏈€澶у偝鎾欢閬叉檪(sh铆)闁擄細15ns锛堝吀鍨嬪€�锛孷CC=5V锛�
銆€銆€闈滄厠(t脿i)闆绘祦锛�1渭A锛堟渶澶у€�锛孷CC=4.5V鑷�5.5V锛孴A=25掳C锛�
銆€銆€宸ヤ綔婧害鑼冨湇锛�-40掳C 鑷� +85掳C
銆€銆€杓稿嚭闆绘祦鑳藉姏锛毬�25mA
銆€銆€杓稿叆淇濊(h霉)锛氬叿鍌� ESD 闃茶(h霉)

鐗规€�

SN74HC251DR 鍏锋湁浠ヤ笅椤憲鐗规€э細
銆€銆€1. 楂橀€� CMOS 鎶€琛�(sh霉)纰轰繚浜嗕綆鍌虫挱寤堕伈鍜屽揩閫熷垏鎻涙€ц兘銆�
銆€銆€2. 宸ヤ綔闆诲鑼冨湇瀵�锛屽厑瑷卞湪澶氱ó闆绘簮姊濅欢涓嬮亱(y霉n)琛�銆�
銆€銆€3. 杓稿叆鍏煎 TTL 鍜� CMOS 闆诲钩锛屽寮�(qi谩ng)浜嗚垏鍏朵粬閭忚集闆昏矾鐨勪簰鎿嶄綔鎬�銆�
銆€銆€4. 瓒呬綆闈滄厠(t脿i)闆绘祦娑堣€�锛屽湪渚挎敎寮忚ō(sh猫)鍌欎腑琛ㄧ従(xi脿n)鍑鸿壊銆�
銆€銆€5. 鍏�(n猫i)閮ㄨō(sh猫)瑷�(j矛)鏀寔楂橀仈(d谩) 8 璺俊铏�(h脿o)閬告搰鍔熻兘銆�
銆€銆€6. 灏佽绶婃箠锛岄仼鍚堢┖闁撳彈闄愮殑瑷�(sh猫)瑷�(j矛)鎳�(y墨ng)鐢ㄣ€�
銆€銆€7. 鎻愪緵鍏ㄩ潰鐨勯潨闆绘斁闆讳繚璀�(h霉)锛屾彁楂樹簡绯荤当(t菕ng)鐨勫彲闈犳€�銆�

鎳�(y墨ng)鐢�

SN74HC251DR 寤ｆ硾鎳�(y墨ng)鐢ㄤ簬闇€瑕侀€�(j矛n)琛屽璺俊铏�(h脿o)閬告搰鐨勫牬(ch菐ng)鍚堬紝渚嬪锛�
銆€銆€1. 鏁�(sh霉)鎿�(j霉)閲囬泦绯荤当(t菕ng)涓殑澶氳矾閬告搰鎺у埗銆�
銆€銆€2. 寰檿鐞嗗櫒鑸囧鍦嶈ō(sh猫)鍌欎箣闁撶殑鎺ュ彛銆�
銆€銆€3. 鏁�(sh霉)瀛楅€氫俊绯荤当(t菕ng)涓殑淇¤櫉(h脿o)璺敱銆�
銆€銆€4. 娓�(c猫)瑭︽脯(c猫)閲忚ō(sh猫)鍌欎腑鐨勫璺几鍏ュ垏鎻涖€�
銆€銆€5. 宸ユキ(y猫)鑷嫊(d貌ng)鍖栨帶鍒朵腑鐨勪俊铏�(h脿o)绠＄悊銆�
銆€銆€6. 娑堣不(f猫i)闆诲瓙鐢�(ch菐n)鍝佺殑淇¤櫉(h脿o)璺緫閬告搰銆�
銆€銆€鐢变簬鍏跺嚭鑹茬殑鎬ц兘鍜岄潏娲绘€э紝瑭茶姱鐗囨槸瑷卞鐝�(xi脿n)浠ｉ浕瀛愮郴绲�(t菕ng)瑷�(sh猫)瑷�(j矛)鐨勭悊鎯抽伕鎿�銆�