| CD40257B | Texas Instruments | CMOS Quad 2-Line-to-1-Line Data Selector/Multiplexer |
| CD40257BE | Texas Instruments | CMOS Quad 2-Line-to-1-Line Data Selector/Multiplexer |
| CD40257BF3A | Texas Instruments | CMOS Quad 2-Line-to-1-Line Data Selector/Multiplexer |
| CD40257BM | Texas Instruments | CMOS Quad 2-Line-to-1-Line Data Selector/Multiplexer |
| CD40257BM96 | Texas Instruments | CMOS Quad 2-Line-to-1-Line Data Selector/Multiplexer |
| CD40257BMT | Texas Instruments | CMOS Quad 2-Line-to-1-Line Data Selector/Multiplexer |
| CD40257BNSR | Texas Instruments | CMOS Quad 2-Line-to-1-Line Data Selector/Multiplexer |
| CD40257BPW | Texas Instruments | CMOS Quad 2-Line-to-1-Line Data Selector/Multiplexer |
| CD40257BPWR | Texas Instruments | CMOS Quad 2-Line-to-1-Line Data Selector/Multiplexer |