The IH5141CWE from Analog Devices Inc./Maxim Integrated is an analog switch Integrated Circuit with 2 circuits, each a 1:1 SPST-NO switch rated at 100 Ω, in a 16-SOIC package.
The IH5141CTW from Analog Devices Inc./Maxim Integrated is a 2-circuit SPST-NC switch Integrated Circuit with 1:1 configuration and 100 Ω resistance, in a TO-100-10 package.