Low RON Low Voltage Dual-SPST Analog Switch with Low ICCT "A" Option Features: 0.4 max RON flatness for 4.5V supply; FSA1256A, FSA1257A, FSA1258A: 2.7V to 5.5V; Fast turn-on and turn-off time; FSA1256, FSA1257, FSA1258: 1.65V to 5.5V; FSA1258, FSA1258A feature break-before-make enable circuitry ; Maximum 1.1 On Resistance (RON) for 4.5V supply; Over-voltage tolerant TTL compatible control input; Broad VCC operating range:; Space saving Pb-Free MicroPak packaging; FSA1256A, FSA1257A, FSA1258A feature low ICCT when S Input is lower than VCC