MAX4573CAI+T

Analog Switches - Special Purpose Overview

The MAX4573CAI+T is a serially controlled audio/video switch IC featuring eleven single-pole single-throw (SPST) analog switches. It operates on a single supply voltage ranging from +2.7V to +5.25V and utilizes a 3-wire SPI/QSPI/MICROWIRE-compatible interface for control. The device provides a maximum on-resistance of 35Ω, with an off-isolation of -90dB at 20kHz for audio and -50dB at 10MHz for video. It supports selectable soft switching mode to eliminate audible clicks during transitions and includes break-before-make timing between switches in the same mode.

Analog Switches - Special Purpose Feature Summary

• Features selectable soft switching mode for clickless audio operation
• Includes 3-wire SPI/QSPI/MICROWIRE-compatible serial interface
• Provides high off-isolation and low crosstalk for multimedia signals

Analog Switches - Special Purpose Applications

• Set-Top Boxes
• Audio Systems
• PC Multimedia Boards
• Video Conferencing Systems

Analog Switches - Special Purpose Procurement Notes

Verify the component designation against official manufacturer documentation to confirm the specific suffix indicates the commercial temperature range and SSOP package type. Ensure that the ordering information matches the required pin configuration and interface protocol before integration into production designs.

Analog Switches - Special Purpose Selection Notes

Select this part when designing systems requiring multiple independently controlled SPST switches managed via a standard serial bus. Verify that the host controller supports the required 3-wire protocol timing and voltage levels compatible with the +2.7V to +5.25V operating range.

Analog Switches - Special Purpose Part Context

This component belongs to the MAX4571–MAX4574 family of serially controlled switches. While the MAX4571 and MAX4572 utilize a 2-wire I²C interface, the MAX4573 variant specifically employs a 3-wire interface. All devices share similar electrical characteristics but differ in their digital control architecture and switch configurations.

Analog Switches - Special Purpose Replacement Considerations

The MAX4571CAI+T serves as a functional substitute within the same series, differing only in its use of a 2-wire I²C interface instead of the 3-wire interface found in the MAX4573CAI+T.