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銆�銆�灏佽椤炲瀷锛欴IP16/SOIC16
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銆�銆�杓稿叆闆诲锛氱磩 10pF
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SN54LS190J 鐨勪富瑕佺壒榛炲寘鎷細
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SN54LS190J 寤ｆ硾鎳夌敤浜庡悇绋暩(sh霉)瀛楅浕璺牁鍩�锛屽寘鎷絾涓嶉檺浜庝互涓嬪牬鏅細
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銆�銆�2. 寰檿鐞嗗櫒绯荤当(t菕ng)鐨勫湴鍧�鐢熸垚鍠厓銆�
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SN74LS190N, MC14520B, DM74190N
