| 131001 | 74ACT251SC | 8-Input Multiplexer with 3-STATE Output | Fairchild Semiconductor |
| 131002 | 74ACT251SCX | 8-Input Multiplexer with 3-STATE Output | Fairchild Semiconductor |
| 131003 | 74ACT253 | Dual 4-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131004 | 74ACT253 | Dual 4-Input Multiplexer with TRI-STATE Outputs | National Semiconductor |
| 131005 | 74ACT253CW | Dual 4-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131006 | 74ACT253MTC | Dual 4-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131007 | 74ACT253MTCX | Dual 4-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131008 | 74ACT253PC | Dual 4-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131009 | 74ACT253SC | Dual 4-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131010 | 74ACT253SCX | Dual 4-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131011 | 74ACT253SJ | Dual 4-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131012 | 74ACT253SJX | Dual 4-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131013 | 74ACT257 | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131014 | 74ACT257 | Quad 2-Input Multiplexer with TRI-STATE Outputs | National Semiconductor |
| 131015 | 74ACT257 | QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | SGS Thomson Microelectronics |
| 131016 | 74ACT257 | QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | ST Microelectronics |
| 131017 | 74ACT257B | QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | SGS Thomson Microelectronics |
| 131018 | 74ACT257B | QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | ST Microelectronics |
| 131019 | 74ACT257CW | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
|
| 131020 | 74ACT257M | QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | SGS Thomson Microelectronics |
| 131021 | 74ACT257M | QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | ST Microelectronics |
| 131022 | 74ACT257MTC | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131023 | 74ACT257MTCX | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131024 | 74ACT257MTR | QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | SGS Thomson Microelectronics |
| 131025 | 74ACT257MTR | QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | ST Microelectronics |
| 131026 | 74ACT257PC | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131027 | 74ACT257SC | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131028 | 74ACT257SCX | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131029 | 74ACT257SJ | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131030 | 74ACT257SJX | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131031 | 74ACT257TTR | QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | SGS Thomson Microelectronics |
| 131032 | 74ACT257TTR | QUAD 2 CHANNEL MULTIPLEXER (3-STATE) | ST Microelectronics |
| 131033 | 74ACT258 | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131034 | 74ACT258CW | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131035 | 74ACT258MTC | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131036 | 74ACT258MTCX | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131037 | 74ACT258PC | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131038 | 74ACT258SC | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131039 | 74ACT258SCX | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
| 131040 | 74ACT258SJ | Quad 2-Input Multiplexer with 3-STATE Outputs | Fairchild Semiconductor |
