The Intersil ISL54503 device is a low ON-resistance, low voltage, bidirectional, single pole/double throw (SPDT) analog switch designed to operate from a single +1.8V to
+5.5V supply. Targeted applications include battery powered equipment that benefit from low ON-resistance (2.5Ω) and fast switching speeds (tON = 25ns, tOFF = 15ns). The digital
logic input is 1.8V CMOS compatible when using a single +3V supply.
Cell phones, for example, often face ASIC functionality
limitations. The number of analog input or GPIO pins may be
limited and digital geometries are not well suited to analog
switch performance. This part may be used to “mux-in”
additional functionality while reducing ASIC design risk. The
ISL54503 is offered in the 6 Ld 1.2mmx1.0mmx0.4mm pitch
μTDFN package, alleviating board space limitations.
The ISL54503 is a committed SPDT that consist of one normally open (NO) and one normally closed (NC) switch.This configuration can also be used as a 2-to-1 multiplexer.