| 型号 | 功能描述 | 生产厂商 | 厂商LOGO | PDF大小 | PDF页数 | 下载地址 | 相关型号 |
| 74LS257 | TRI-STATE Quad 2-Data Selectors/Multiplexers | NSC[National Semiconductor] | ![NSC[National Semiconductor]的LOGO](/PdfSupLogo/106NSC.GIF) | 163.7 Kbytes | 共8页 |  | 54AC258,MM74HC242,DM74LS257B,ST26C31,DS26C31T,DS7833,54LS126,DM74125,54AC125,DS8924 |
| 74LS257 | LOW POWER SCHOTTKY | ONSEMI[ON Semiconductor] | ![ONSEMI[ON Semiconductor]的LOGO](/PdfSupLogo/112ONSEMI.GIF) | 118.29 Kbytes | 共8页 |  | SN74LS109A,SN74LS195A,SN74LS38,SHD114211,SHD114411,SHD115422,SHD116212,SHD117122,SHD125212,STPS15L25D |
| 74LS257 | QUADRUPLE 2-LINE TO 1-LINE DATA SELECTORS/MULTIPLEXERS | TI[Texas Instruments] | ![TI[Texas Instruments]的LOGO](/PdfSupLogo/158TI.GIF) | 661.04 Kbytes | 共16页 |  | 74ACT11257,SN54AHCT158,SN74LVC157A,SN54ALS257A,SN74LVC257A,SN54F157A,SN54F158A,SN74LVC157AFK,SN54F257,SN74LVC157A-Q1 |
| 74LS257 | 3-STATE Quad 2-Data Selectors/Multiplexers | FAIRCHILD[Fairchild Semiconductor] | ![FAIRCHILD[Fairchild Semiconductor]的LOGO](/PdfSupLogo/51FAIRCHILD.GIF) | 56.55 Kbytes | 共5页 |  | MC74HC125A,74ABT126,74AHC125,74VHC125,HD74AC125,74ACT125MTR,MC74LVX257,54LS257A,74AHC126,74F125 |
| 74LS257 | Quadruple 2-line-to-1-line Data Selectors/Multiplexers(with non inverted 3-state outputs) | HITACHI[Hitachi Semiconductor] | ![HITACHI[Hitachi Semiconductor]的LOGO](/PdfSupLogo/63HITACHI.GIF) | 69.11 Kbytes | 共6页 |  | 74VHCT16245A,74VHC16244,SN54AHC257,74AC11257,SN54F257,SN54HC257,SN54AHCT257,74AC245,SN54F258,74LCX16541 |