Analog Devices Inc./Maxim Integrated MAX4674EGE

Overview

MAX4674EGE from Maxim Integrated is a low-voltage, quad 2:1 analog multiplexer/demultiplexer IC operating from a single +1.8V to +5.5V supply. It delivers 4Ω max on-resistance at +5V, 0.4Ω max R_ON matching between channels, and 18ns max turn-on time. It is used in audio/video signal routing, low-voltage data-acquisition systems, and relay replacement where rail-to-rail signal handling and TTL/CMOS logic compatibility are required.

For engineers reviewing the MAX4674EGE datasheet, MAX4674EGE pinout, MAX4674EGE application, or MAX4674EGE equivalent, key selection criteria include guaranteed R_ON flatness (±0.8Ω), -114dB crosstalk at 1MHz, break-before-make timing (1ns), and QFN-16 EP package thermal performance for high-density PCB layouts.

Technical Context

The MAX4674EGE implements four independent bidirectional 2:1 analog switches controlled by a single address input (A0) and active-low enable (EN). Each switch features complementary CMOS transmission gates with matched P/N channel sizing to ensure tight R_ON matching and flatness across the full 0V to V+ signal range.

Its digital interface supports mixed-voltage operation: A0 and EN accept 0.4V/2.0V thresholds at +3V supply and 0.8V/2.4V at +5V, enabling direct interfacing with both 3.3V and 5V logic without level shifters. Internal ESD diodes clamp analog pins to V+ and GND, limiting signal excursion but preserving leakage specs (≤0.5nA at +25°C).

Key Specifications

Pinout & Package

MAX4674EGE is housed in a 4mm × 4mm, 16-pin QFN package with exposed pad (EP), optimized for thermal dissipation and high-density layout. The exposed pad must be soldered to a PCB ground plane to meet specified R_θJA = 54°C/W and ensure reliable operation at full rated current.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1414BRUZ and TS5A23157DCUR, MAX4674EGE uniquely combines NC/NO redundancy, 0.5nA leakage, and QFN-EP thermal capability-making it optimal for industrial relay replacement and multi-channel data acquisition where reliability and signal fidelity are co-prioritized.

Availability

MAX4674EGE is available at Aetrix Electronics and suitable for audio signal routing, low-voltage data-acquisition systems, and relay replacement requiring stable component supply across automotive, industrial, and medical device production programs.

Supply support for MAX4674EGE 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 demanding industrial, communications, and computing applications.

The MAX4674EGE belongs to Maxim's high-performance analog switch product line, engineered specifically for low-R_ON, low-leakage, and fast-switching applications in signal routing, instrumentation, and solid-state relay replacement.

FAQ

What is the maximum analog signal voltage range supported by the MAX4674EGE?

The MAX4674EGE supports rail-to-rail analog signals from 0V to V+, where V+ ranges from +1.8V to +5.5V. When powered from +5V, the full signal range is 0V to +5V. This allows direct interfacing with sensors, DACs, and ADCs operating at the same supply without level shifting. Exceeding V+ or going below GND risks forward-biasing internal ESD diodes, so clamping networks may be needed for overvoltage protection.

Does the MAX4674EGE support break-before-make switching, and what is its guaranteed timing?

Yes, the MAX4674EGE guarantees break-before-make operation with a maximum interval of 1ns across the full temperature range (-40°C to +85°C). This prevents momentary shorting between NO and NC paths during state transitions, eliminating signal glitches in sensitive applications like audio routing or data acquisition. The specification is verified per Figure 3 in the datasheet using RL = 100Ω and CL = 35pF.

Can the MAX4674EGE be operated from a +3.3V supply while accepting 5V logic inputs on A0 and EN?

Yes, the MAX4674EGE supports mixed-voltage operation: A0 and EN tolerate voltages up to +5.5V regardless of V+ level, enabling direct connection to 5V CMOS/TTL logic even when V+ = +3.3V. Logic thresholds scale with V+ (e.g., VIH = 2.0V min at +3V), ensuring robust recognition of high/low states without external level shifters - a key advantage in heterogeneous digital systems.

What is the thermal design requirement for the exposed pad on the MAX4674EGE QFN package?

The exposed pad (EP) of the MAX4674EGE must be soldered to a PCB copper pour connected to GND to achieve the specified thermal performance. With proper thermal vias and grounding, the package achieves θ_JA = 54°C/W, allowing 1481mW max power dissipation at +70°C ambient. Omitting EP connection degrades thermal resistance significantly and risks exceeding junction temperature limits under sustained 100mA load per channel.

How does the MAX4674EGE minimize crosstalk in multi-channel audio routing applications?

The MAX4674EGE achieves -114dB crosstalk at 1MHz through tightly matched switch geometry, guarded layout within the die, and low inter-channel capacitance (C_NO(OFF) = 10pF, C_COM(OFF) = 20pF). This performance is measured between any two channels with 5pF load and 100Ω source impedance. In practice, it enables clean separation of stereo or multi-zone audio signals without audible bleed or interference, even at high frequencies.