1 Features
1• Low ON-State Resistance (Ron)
– 0.9-Ω Max (3-V Supply)
– 1.5-Ω Max (1.8-V Supply)
• 0.4-Ω Max Ron Flatness (3-V Supply)
• 1.6-V to 3.6-V Single-Supply Operation
• Available in SOT-23 and VSSOP Packages
• High Current-Handling Capacity (100 mA
Continuous)
• 1.8-V CMOS Logic Compatible (3-V Supply)
• Fast Switching: tON = 14 ns, tOFF = 9 ns

2 Applications
• Power Routing
• Battery-Powered Systems
• Audio and Video Signal Routing
• Low-Voltage Data-Acquisition Systems
• Communications Circuits
• PCMCIA Cards
• Cellular Phones
• Modems
• Hard Drives

3 Description
The TS3A4741 and TS3A4742 are bi-directional, 2-
channel single-pole/single-throw (SPST) analog switches with low ON-state resistance (Ron), low-
voltage, that operate from a single 1.6-V to 3.6-V
supply. These devices have fast switching speeds,
handle rail-to-rail analog signals, and consume very low quiescent power.
The digital logic input is 1.8-V CMOS compatible when using a single 3-V supply.
The TS3A4741 has two normally open (NO) switches,
and the TS3A4742 has two normally closed (NC)
switches.