MAX7358ETG+

Analog Switches - Special Purpose Overview

The MAX7358ETG+ is a 1-to-8 I2C bus switch and multiplexer designed to expand the main I2C bus into eight independent extended buses. It operates with a supply voltage range of 2.3V to 5.5V and supports both Standard-Mode (up to 100kbps) and Fast-Mode (up to 400kbps) communication protocols. The device features enhanced mode capabilities including built-in bus lock-up detection, isolation, and notification via a bidirectional RST/INT pin. It provides low on-resistance switches, logic-level translation, and address translation to resolve slave address conflicts. The component is specified for operation over an extended temperature range from -40°C to +85°C.

Analog Switches - Special Purpose Feature Summary

• Enhanced mode operation with integrated bus lock-up detection and isolation
• Bidirectional RST/INT pin providing hardware reset and fault interrupt notification
• Logic-level translation supporting 5.5V-tolerant inputs across the full supply range
• Address translation capability allowing multiple devices with identical IDs on separate buses

Analog Switches - Special Purpose Applications

• Servers and RAID systems requiring isolated I2C control paths
• Base stations and networking equipment managing multiple peripheral interfaces
• Control and automation devices needing robust bus fault handling
• SFP control interfaces demanding reliable signal integrity

Analog Switches - Special Purpose Procurement Notes

Verify the specific ordering suffix ETG+ corresponds to the 24-pin TQFN package with an exposed pad. Confirm RoHS compliance status as indicated by the plus sign in the part number. Ensure the selected variant matches the required operational mode, as the MAX7358 powers up in basic mode by default compared to the MAX7357.

Analog Switches - Special Purpose Selection Notes

Select the MAX7358ETG+ when enhanced diagnostic features such as bus lock-up detection and preconnection wiggle tests are required. This model differs from the MAX7356 by offering additional registers for fault management and from the MAX7357 by its specific power-on reset state configuration. Verify that the host system can support the necessary I2C command sequences to activate enhanced mode if needed.

Analog Switches - Special Purpose Part Context

The MAX7358 belongs to a family of 1-to-8 I2C bus switches that includes the MAX7356 and MAX7357. While all three models share similar switching capabilities and pinouts, the MAX7358 is distinguished by its enhanced mode features and specific power-on behavior. It serves as a solution for isolating I2C buses to prevent address conflicts and manage downstream bus faults in complex electronic systems.

Analog Switches - Special Purpose Replacement Considerations

Public confirmed substitute part numbers include MAX7356ETG+ and MAX7357ETG+. Note that these variants differ in feature sets and power-on states; verify functional compatibility before substitution.