Dual 0.8Ω SPST Switch

The AS1741/AS1742/AS1743 are high-speed, low-voltage, dual single-pole/single-throw (SPST) analog switches. Fast switching speeds, low ON-resistance, and low power-consumption make these devices ideal for single-cell battery powered applications.

These highly-reliable devices operate from a single +1.6V to +3.6V supply, and are differentiated by the type and number of switches:

• AS1741 - Two normally open (NO) switches
• AS1742 - Two normally closed (NC) switches
• AS1743 - One NO switch and one NC switch

The AS1743 supports break-before-make switching. With very low ON-resistance (RON), RON matching, and RON flatness, the devices can accurately switch signals for sample and hold circuits, digital filters, and op-amp gain switching networks.

The AS1741/AS1742/AS1743 digital logic input is 1.8V CMOS-compatible when using a single +3V supply, and all devices can handle Rail-to-Rail signals. The devices are available in an 8-pin SOT23 and MSOP package.