The MAX381/MAX383/MAX385 are precision, low-voltage analog switches. The single-pole single-throw MAX381 and double-pole single-throw MAX385 dual switches are normally open. The single-pole doublethrow MAX383 has two normally open and two normally closed poles. All three parts offer low on-resistance (less than 35 ), guaranteed to match to within 2 between channels and to remain flat over the specified analog signal range (4 max). They also offer low leakage (less than 250pA at +25C and less than 2.5nA at +85C) and fast switching (turn-on time less than 175ns and turn-off time less than 100ns).