The Intersil ISL54051 and ISL54052 devices are low
ON-resistance, low voltage, bidirectional, single
pole/single throw (SPST) analog switches designed to
operate from a single +1.8V to +5.5V supply. Targeted
applications include battery powered equipment, which
benefit from low rON resistance (0.8Ω), excellent rON
flatness, and fast switching speeds (tON = 24ns,
tOFF = 10ns). The digital logic input is 1.8V logic
compatible when using a single +3.0V 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 family of parts may
be used to switch in additional functionality while
reducing ASIC design risk. The ISL54051 and the
ISL54052 are offered in a 6 Ld 1.2mmx1.0mmx0.5mm
µTDFN package and a 6 Ld SOT-23 package, alleviating
board space limitations.
The ISL54051 has one normally open (NO) switch and
ISL54052 has one normally closed (NC) switch.

Features
• ON-resistance (rON)
- VCC = +5.0V. . . . . . . . . . . . . . . . . . . . . 0.8Ω
- VCC = +3.0V. . . . . . . . . . . . . . . . . . . . . 1.1Ω
- VCC = +1.8V. . . . . . . . . . . . . . . . . . . . . 2.3Ω
• rON flatness (+4.5V supply) . . . . . . . . . . . . 0.25Ω
• Single supply operation . . . . . . . . +1.8V to +5.5V
• Fast switching action (+4.5V supply)
- tON . . . . . . . . . . . . . . . . . . . . . . . . . . . 24ns
- tOFF . . . . . . . . . . . . . . . . . . . . . . . . . . . 10ns
• ESD HBM rating . . . . . . . . . . . . . . . . . . . . . . >6kV
• 1.8V, CMOS logic compatible (+3V supply)
• Available in 6 Ld µTDFN and 6Ld SOT-23 Packages
• Pb-free (RoHS compliant)

Applications
• Battery powered, handheld, and portable equipment
- Cellular/mobile phones
- Pagers
- Laptops, notebooks, palmtops
• Portable test and measurement
• Medical equipment
• Audio and video switching