74ls240芯片资料，好东西，喜欢的朋友可以下载来学习。
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SN74LS240 SN74LS244 Octal BufferLine Driver with 3State Outputs The SN74LS240 and SN74LS244 are Octal Buffers and Line Drivers designed to be employed as memory address drivers clock drivers and busoriented transmittersreceivers which provide improved PC board density Hysteresis at Inputs to Improve Noise Margins 3State Outputs Drive Bus Lines or Buffer Memory Address Input Clamp Diodes Limit HighSpeed Termination Effects Registers GUARANTEED OPERATING RANGES Symbol Parameter Min 475 0 VCC TA......
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