MAX4638EUE+T

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4638EUE+T is a single 8:1 CMOS analog multiplexer housed in a 16-pin TSSOP package. It operates from a single +1.8V to +5.5V supply or dual ±2.5V supplies, featuring a typical on-resistance of 3.5Ω at +5V and 6Ω at +3V. The device provides an 85MHz -3dB bandwidth with transition times of 18ns (tON) and 7ns (tOFF). Leakage currents are guaranteed at 0.25nA at +25°C. Control inputs utilize standard BCD decoding and are TTL/CMOS-compatible.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Bidirectional signal handling supporting Rail-to-Rail operation across the full supply range.
• Guaranteed break-before-make switching prevents channel overlap during transitions.
• Standard BCD address decoding simplifies cascading multiple devices via an enable input.

Analog Switches, Multiplexers, Demultiplexers Applications

• Automatic Test Equipment
• Low-Voltage Data-Acquisition Systems
• Audio and Video Signal Routing

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'EUE' corresponds to the 16-pin TSSOP package and the '+T' indicates tape-and-reel delivery. Confirm RoHS compliance status matches project requirements. Ensure the operating temperature range of -40°C to +85°C aligns with the environmental conditions of the target application before finalizing procurement.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component for designs requiring low-voltage operation down to 1.8V with high off-isolation. Compare against the MAX4639 if a dual 4:1 configuration is preferred over a single 8:1 topology. Consider the TSSOP footprint constraints and verify that the 3.5Ω on-resistance meets the signal integrity requirements for the specific load impedance.

Analog Switches, Multiplexers, Demultiplexers Part Context

This part belongs to the MAX4638/MAX4639 family of low-voltage analog multiplexers manufactured by Analog Devices / Maxim Integrated. The E suffix denotes the industrial temperature range (-40°C to +85°C), while the U indicates the TSSOP package type. The + symbol confirms lead-free and RoHS-compliant manufacturing standards.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The MAX4638ESE+T serves as a pin-compatible alternative utilizing a 16-pin SOIC package instead of TSSOP. Designers must evaluate thermal dissipation differences and physical board space constraints when substituting between these package types.

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the MAX4638 handle overvoltage conditions?

Signals on COM_ and NO_ pins exceeding V+ or V- are clamped by internal protection diodes. External blocking diodes may be added if power-supply sequencing cannot be guaranteed.

What logic levels control the address inputs?

The control inputs are TTL/CMOS-logic compatible. For a +5V supply, VIH is 2.4V and VIL is 0.8V. For a +3V supply, VIH is 2.0V and VIL is 0.4V.

Is the switching action simultaneous or sequential?

The device features guaranteed break-before-make switching, ensuring the old channel disconnects before the new one connects to prevent signal shorting.