资 源 简 介
The Intersil ISL54054 and ISL54055 devices consist of lowON-resistance, low voltage, bi-direcTIonal SPST analogswitches designed to operate from a single +1.8V to +5.5Vsupply. These devices have an unique architecture. Theyhave two signal pins (pin 1 and pin 3) that aresimultaneously connected or disconnected to a common pin(pin 4) under the control of a single logic control pin (pin 6).The ISL54054 switches are OFF when the logic is low andON when the logic is high. The ISL54055 switches are ONwhen the logic is low and OFF when the logic is high. Thisarchitecture allows these devices to be used as a singleSPST switch or as a distribuTIon switch to distribute a singlesource to two different loads.SPST operaTIon is achieved by using one of the signal pinswhile floaTIng the other signal pin or by externally connectingthe two signal pins together. When both signal pins are tiedtogether, the rON of the SPST is reduced by half, from 1Ω to0.5Ω (when operated with a 5V supply).
