ISL84521IBZ

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The ISL84521IBZ is an integrated circuit component made by Intersil. It is part of a family of integrated circuits categorized as Interface - Analog Switches, Multiplexers, Demultiplexers. This component is a high-voltage, low leakage, single-pole double-throw (SPDT) analog switch with low on-resistance.

The component is advantageous in that it offers both low power operation and good isolation characteristics. It is available in an 8-lead MSOP-8 package, with an on-resistance of 40 Ohms typical and a robust crosstalk of -57dB. Its high-voltage performance of greater than ±26V allows the component to operate at high voltages and temperatures.

The ISL84521IBZ is designed to be a low voltage multi-purpose signal routing switch. It is primarily used for switching audio signals, but can also be used for power and control signals. Its low on-resistance makes it ideal for signal routing in mobile, automotive and consumer applications, as it reduces signal attenuation and signal noise compared to other multiplexers. When used as a multiplexer, it enables simultaneous selection from up to four inputs using only two control signals. It can also be used as a switch to connect a signal source to only one output at a time. In the event of an overload or fault, the switch acts as a fail-safe switch, automatically disconnecting the signal source.

The ISL84521IBZ is designed to be used in applications where high isolation of signals and low power operation is crucial. It is specifically designed to provide low quiescent current and low fan out, so as to minimize power requirements. Its low voltage range, wide temperature rating and ESD protection also make it ideal for use in portable and automotive applications.

The operation of the ISL84521IBZ is based on a simple CMOS logic approach. It provides an SPI interface, enabling users to control the switching between input and output channels. It also utilizes an enable signal for enabling or disabling the switch through logic. The switch passes all DC and AC signal levels, making it perfect for audio applications. When used as a multiplexer, the signal can be switched through multiple inputs or outputs.

To sum up, the ISL84521IBZ is a high-voltage, low leakage, SPDT analog switch with low on-resistance. It is suitable for use in applications where low power operation and good isolation of signals are required. The switch is available in an 8-lead MSOP-8 package and utilizes a simple CMOS logic approach to enable signal switching between input and output channels.

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