관련 데이터시트
54LS20Dual 4-Input NAND Gates - National Semiconductor
54LS2054LS20 DM54LS20 DM74LS20 Dual 4-Input NAND Gates (Rev. A) - Texas Instruments
54LS240LSTTL eight-Buffer / Bus Driver - BDTIC
54LS240Octal TRI-STATE Buffer / Line Drivers / Line Receivers - National Semiconductor
54LS241(54LS240) Octal Buffer - Signetics
54LS244Octal TRI-STATE Buffers/Line Drivers/Line Receivers - National Semiconductor
54LS245D2Octal Bus Transceiver - SGS-Thomson
54LS256Dual 4-Bit Addressable Latch - National Semiconductor
54LS256DUAL 4-BIT ADDRESSABLE LATCH - Motorola Semiconductors