Ultra Low ON-Resistance, +1.65V to +4.5V,Single Supply, Dual SPST Analog SwitchThe Intersil ISL54048 and ISL54049 devices are low ON-resistance, low voltage, bidirectional, dual singlepole/single-throw (SPST) analog switches designed tooperate from a single +1.65V to +4.5V supply. Targetedapplications include battery powered equipment that benefitfrom low rON (0.29Ω) and fast switching speeds (tON = 40ns,tOFF = 20ns). The digital logic input is 1.8V logic-compatiblewhen using a single +3V supply.Cell phones, for example, often face ASIC functionalitylimitations. The number of analog input or GPIO pins may belimited and digital geometries are not well suited to analogswitch performance. This part may be used to “mux-in”additional functionality while reducing ASIC design risk. TheISL54048 and ISL54049 are offered in a small form factorpackage, alleviating board space limitations.The ISL54048 has two normally open (NO) SPST switches and the ISL54049 has two normally closed (NC) SPST switches.
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