| 描述 | 算术逻辑单元 (ALU) Look-Ahead Carry Gen |
|---|
【Fairchild Semiconductor】DM74S20N,门（与/非与/或/非或） Dl 4-Input NAND Gate
【Fairchild Semiconductor】DM74S240N,缓冲器和线路驱动器 Oct 3-STATE Buff/Drv
【Fairchild Semiconductor】DM74S241N,缓冲器和线路驱动器 Oct 3-STATE Buff/Drv
【Fairchild Semiconductor】DM74S244N,缓冲器和线路驱动器 Oct 3-STATE Buff/Drv
【Fairchild Semiconductor】DM74S253N,编码器、解码器、复用器和解复用器 Dl 3-STATE Sel/Mult
【Fairchild Semiconductor】DM74S257N,编码器、解码器、复用器和解复用器 Qd 3-STATE Sel/Mul
