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AS1741

8 Detailed Description

The AS1741/AS1742/AS1743 are low ON-resistance, low-voltage, dual analog SPST switches that operate from a sin-

gle +1.6 to +3.6V supply.

CMOS process technology allows switching of analog signals that are within the supply voltage range (GND to V+).

ON Resistance

When powered from a +3V supply, the AS1741/AS1742/AS1743 low (0.8

Ω, max) ON-resistance allows high-speed,

Ω, max) so

they can meet or exceed the low-distortion audio requirements of modern portable audio devices.

Bi-Directional Switching

Pins NOx, NCx, and COMx are bi-directional and can be used as inputs or outputs.

Analog Signal Levels

Analog signals ranging over the entire supply voltage range (V+ to GND) can be passed with very little change in ON-

resistance (see Typical Operating Characteristics on page 6).

Logic Inputs

The AS1741/AS1742/AS1743 logic inputs can be driven up to +3.6V regardless of the supply voltage value. For exam-

ple, with a +1.8V supply, INx may be driven low to GND and high to +3.6V. This allows the devices to interface with

+3V systems using a supply of less than 3V.