Analog Devices Inc./Maxim Integrated MAX4734ETC+T

Overview

MAX4734ETC+T from Maxim Integrated is a 4-channel CMOS analog multiplexer with break-before-make switching, operating from a single 1.6V–3.6V supply. It delivers 0.8Ω (max) on-resistance at 3V, 25ns turn-on time, and rail-to-rail analog signal handling up to ±150mA continuous current-ideal for low-voltage audio routing and battery-powered data-acquisition systems.

For engineers reviewing the MAX4734ETC+T datasheet, MAX4734ETC+T pinout, MAX4734ETC+T application, or MAX4734ETC+T equivalent, key selection criteria include on-resistance flatness (0.1Ω max), 1.8V CMOS logic compatibility at 3V supply, and TQFN-12 package thermal performance (1176mW at +70°C).

Technical Context

The MAX4734ETC+T implements a 2-bit address-decoded 4:1 analog multiplexer with independent enable control, supporting bidirectional signal flow between COM and any of four NOx terminals. Its CMOS switch architecture ensures rail-to-rail analog operation (GND to V+) and guarantees break-before-make timing (5ns typical) to prevent channel shorting during switching.

It features ultra-low quiescent supply current (≤1µA at 3.6V), 33pF NOx off-capacitance, and −56dB off-isolation at 1MHz-enabling high-fidelity signal routing in portable communications circuits where crosstalk and charge injection (60pC typical) must be minimized.

Key Specifications

Pinout & Package

MAX4734ETC+T uses a 12-pin thin QFN package (3mm × 3mm) with exposed thermal pad connected to GND. Pin 1 is A0; pin 12 is A0 (top-view marked); pins 5 and 11 are no-connect (N.C.).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog multiplexer applications.

Compared with MAX4734ETC+T, MAX4733ETC+T offers identical performance in a 3-channel footprint but removes design flexibility, while TMUX1574RTER trades higher bandwidth and tighter logic compatibility for increased on-capacitance and less robust off-isolation (−48dB vs. −56dB).

Availability

MAX4734ETC+T is available at Aetrix Electronics and suitable for battery-powered systems, audio signal routing, and low-voltage data-acquisition systems requiring stable component supply across extended temperature ranges (−40°C to +85°C).

Supply support for MAX4734ETC+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated, now part of Analog Devices, designs precision analog, mixed-signal, and power-management ICs for industrial, medical, and communications applications.

The MAX4734ETC+T belongs to Maxim's low-voltage analog switch product line, engineered specifically for portable and energy-constrained systems demanding rail-to-rail signal integrity, ultra-low power, and compact packaging.

FAQ

What is the maximum continuous current rating for MAX4734ETC+T?

The MAX4734ETC+T supports ±150mA continuous current through its COM and NOx terminals. This rating applies across the full operating temperature range (−40°C to +85°C) and supply voltage (1.6V–3.6V). Exceeding this limit risks thermal overstress, especially in the TQFN-12 package without adequate PCB copper pour on the exposed pad.

Does MAX4734ETC+T support rail-to-rail analog signal switching?

Yes, the MAX4734ETC+T supports rail-to-rail analog signal switching from GND to V+. Its CMOS switch architecture ensures minimal on-resistance variation (<0.1Ω flatness) across the full voltage range, enabling accurate signal transmission in applications like sensor front-ends and audio paths where signal headroom is critical.

What logic voltage levels are compatible with MAX4734ETC+T inputs?

At a 3V supply, the MAX4734ETC+T logic inputs (A0, A1, EN) are 1.8V CMOS compatible: VIH = 1.4V (min), VIL = 0.5V (max). Inputs tolerate up to 3.6V regardless of V+, allowing direct interfacing with higher-voltage controllers without level shifters-provided absolute maximum ratings are observed.

Is break-before-make timing guaranteed for MAX4734ETC+T?

Yes, break-before-make timing is guaranteed by design for the MAX4734ETC+T, with a minimum interval of 5ns (typical) and guaranteed >1ns across temperature. This prevents momentary shorting between channels during address transitions-essential for avoiding signal corruption in multi-source routing applications.

How does the TQFN-12 package of MAX4734ETC+T impact thermal performance?

The MAX4734ETC+T's 12-pin TQFN (3mm × 3mm) package delivers 1176mW continuous power dissipation at +70°C, with derating of 14.7mW/°C above that temperature. The exposed thermal pad must be soldered to a solid GND plane to achieve rated performance; insufficient thermal relief reduces safe operating area by up to 40%.