MAX4574EEI+

Analog Switches - Special Purpose Overview

The MAX4574EEI+ is a serially controlled audio/video switch IC from the MAX4571–MAX4574 family, manufactured by Analog Devices (Maxim Integrated). It features two SPST and six SPDT switches configured in a 28-pin QSOP package. The device operates on a single supply voltage ranging from +2.7V to +5.25V. It utilizes a 3-wire SPI/QSPI/MICROWIRE-compatible serial interface for control. Key electrical specifications include a maximum on-resistance of 35Ω, -90dB audio off-isolation at 20kHz, and -50dB video off-isolation at 10MHz. The component supports selectable soft switching mode for clickless audio operation and functions within an extended temperature range of -40°C to +85°C.

Analog Switches - Special Purpose Feature Summary

• Configurable soft switching mode eliminates audible clicking during audio signal routing transitions
• Integrated 3-wire serial interface compatible with SPI, QSPI, and MICROWIRE protocols
• High isolation performance with -90dB audio off-isolation and -50dB video off-isolation

Analog Switches - Special Purpose Applications

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

Analog Switches - Special Purpose Procurement Notes

Verify the specific ordering suffix EEI confirms the -40°C to +85°C temperature range and 28-pin QSOP package configuration. Ensure the design requires the 3-wire serial interface characteristic of the MAX4574 variant rather than the I2C interface found in other family members. Confirm RoHS compliance status through official manufacturer documentation prior to final procurement.

Analog Switches - Special Purpose Selection Notes

Select this component when a combination of SPST and SPDT switching is required within a single package. The MAX4574EEI+ is appropriate for designs needing extended industrial temperature capabilities compared to commercial grade variants. Verify that the system controller can support the necessary 3-wire serial protocol timing requirements for reliable data transmission.

Analog Switches - Special Purpose Part Context

This part belongs to the MAX4571–MAX4574 series of serially controlled analog switches. While the MAX4571 and MAX4573 contain eleven SPST switches and use an I2C interface, the MAX4574 specifically integrates two SPST and six SPDT switches. The 'E' suffix denotes the extended temperature range, and 'I' indicates the 28-pin QSOP package type.

Analog Switches - Special Purpose Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.