| FSA1256 | Fairchild Semiconductor | Low RON Low Voltage Dual SPST Analog Switch |
| FSA1256L8X | Fairchild Semiconductor | Low RON Low Voltage Dual SPST Analog Switch |
| FSA1257 | Fairchild Semiconductor | Low RON Low Voltage Dual SPST Analog Switch |
| FSA1257L8X | Fairchild Semiconductor | Low RON Low Voltage Dual SPST Analog Switch |
| FSA1258 | Fairchild Semiconductor | Low RON Low Voltage Dual SPST Analog Switch |
| FSA1258L8X | Fairchild Semiconductor | Low RON Low Voltage Dual SPST Analog Switch |