MAX4638ETE+T

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4638ETE+T is a single 8:1 CMOS analog multiplexer housed in a 16-pin TQFN-EP (4x4) 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 supports bidirectional signal handling with rail-to-rail capability and guarantees break-before-make switching. Key electrical parameters include an enable turn-on time of 18ns maximum, an enable turn-off time of 7ns maximum, and a -3dB bandwidth of 50MHz for the MAX4638 variant. Leakage currents are guaranteed at 0.25nA maximum at +25°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Supports low-voltage single-supply operation ranging from +1.8V to +5.5V or dual ±2.5V supplies.
• Features TTL/CMOS-compatible logic inputs with standard BCD decoding and a dedicated enable pin.
• Provides bidirectional signal routing with rail-to-rail analog signal handling capabilities.
• Guarantees break-before-make switching action across all channels to prevent signal shorting.

Analog Switches, Multiplexers, Demultiplexers Applications

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

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the component authenticity by checking the marking code against official Analog Devices documentation. Confirm the exposed pad connection requirement for thermal management and electrical grounding. Ensure the ordering suffix matches the required tape-and-reel packaging format. Cross-reference the RoHS compliance status with current environmental regulations before finalizing procurement orders.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this part when a single 8-channel multiplexing function is required within a compact surface-mount footprint. Consider the MAX4639 if a dual 4:1 configuration is preferred instead. Evaluate the 3.5Ω on-resistance against load requirements to ensure acceptable voltage drop. Verify that the 50MHz bandwidth meets the frequency specifications of the intended analog signals.

Analog Switches, Multiplexers, Demultiplexers Part Context

This component belongs to the MAX4638/MAX4639 family of low-voltage analog multiplexers manufactured by Analog Devices under the Maxim Integrated brand. The ETE+T designation specifically identifies the industrial temperature range (-40°C to +85°C), the 16-pin TQFN package with an exposed pad, and lead-free/RoHS-compliant construction.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct functional equivalents within the same package include the MAX4638EUE+T (16-TSSOP) and MAX4638ESE+T (16-SO). For dual 4:1 configurations, the MAX4639ETE+T serves as the logical alternative. Verify pin compatibility and on-resistance specifications when substituting with other series members.