MAX3645ESE+

Overview

The MAX3645ESE+ is a precision, quad, single-pole single-throw (SPST) analog switch IC manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 10 V to 30 V for single supplies or ±4.5 V to ±20 V for dual supplies. The device features a maximum on-resistance of 85 Ohms and supports a switching current of 30 mA. Key timing specifications include a maximum turn-on time of 250 ns and a maximum turn-off time of 120 ns. It is housed in a 16-pin SOIC-Narrow package with an industrial operating temperature range of -40°C to +85°C.

Feature Summary

• Quad SPST configuration providing four independent signal paths in a single package
• Precision performance characterized by low input offset voltage
• Capable of handling high supply voltages up to 30 V
• Supports both single and dual power supply configurations

Applications

• Precision data acquisition systems requiring signal routing
• Industrial process control instrumentation
• Medical equipment signal conditioning circuits
• Test and measurement apparatus multiplexing

Procurement Notes

Verify the specific suffix ESE against the official datasheet to confirm the SOIC-16 package and industrial temperature grade. Confirm RoHS compliance status as documentation may vary by production batch. Check for obsolescence notices from Analog Devices, as older Maxim products may have limited availability or require alternative sourcing strategies.

Selection Notes

Select this component when multiple isolated analog channels are required within a compact footprint. Ensure the application voltage does not exceed the 30 V absolute maximum rating. Consider the 85 Ohm on-resistance impact on signal integrity for high-impedance sources. Verify that the 250 ns switching speed meets the system timing requirements.

Part Context

This part belongs to the MAX364 series of precision analog switches. It serves as a robust solution for multiplexing applications where signal accuracy and high voltage tolerance are critical. The device integrates four independent switches, reducing board space compared to discrete solutions while maintaining high isolation between channels.

Replacement Considerations

Consult the official Analog Devices cross-reference guide for verified alternatives. Generic pin-compatible swaps may differ in on-resistance or leakage current specifications. Ensure any substitute maintains the 30 V supply capability and SOIC-16 package form factor.