Analog Devices Inc./Maxim Integrated MAX4674ETE+T

Overview

MAX4674ETE+T 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 serves in high-fidelity audio routing, low-voltage data-acquisition front-ends, and relay-replacement signal switching.

For engineers reviewing the MAX4674ETE+T datasheet, MAX4674ETE+T pinout, MAX4674ETE+T application, or MAX4674ETE+T equivalent, key selection criteria include guaranteed R_ON flatness (±0.8Ω), rail-to-rail signal handling, -114dB crosstalk at 1MHz, and TTL/CMOS-compatible digital inputs with independent 5.5V-tolerant A0/EN control.

Technical Context

The MAX4674ETE+T implements four independent SPDT analog switches with break-before-make timing (1ns max) to prevent signal shorting during channel transitions. Each switch features matched internal CMOS topology enabling precise R_ON tracking across temperature and supply voltage.

Digital control uses two pins: EN (active-low enable) and A0 (channel select), supporting eight discrete states including all-off and per-channel on/off. Input logic thresholds scale with V+, ensuring reliable operation at +3V (VIH = 2.0V) and +5V (VIH = 2.4V) without level-shifting.

Key Specifications

Pinout & Package

MAX4674ETE+T is housed in a 16-pin 4mm × 4mm QFN package with exposed pad (G1644-1), optimized for thermal dissipation and high-density PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG732BRUZ and TS5A23157DCUR, the MAX4674ETE+T uniquely balances quad-channel density, 4Ω R_ON, integrated enable, and QFN thermal performance-making it optimal for space-constrained, multi-signal embedded systems requiring consistent low-loss switching.

Availability

MAX4674ETE+T is available at Aetrix Electronics and suitable for audio signal routing, low-voltage data-acquisition systems, and relay-replacement applications requiring stable component supply and long-term industrial availability.

Supply support for MAX4674ETE+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, communications, and consumer applications.

The MAX4674 belongs to Maxim's high-performance analog switch family, engineered for low-R_ON, fast switching, and robust signal integrity in battery-powered and mixed-voltage systems.

FAQ

What is the maximum supply voltage rating for MAX4674ETE+T?

The MAX4674ETE+T has an absolute maximum V+ rating of +6V. Operation beyond this voltage risks permanent damage due to internal ESD diode breakdown. The recommended operating range remains +1.8V to +5.5V, with electrical specifications fully guaranteed across that span. Always observe proper power sequencing-apply V+ before logic or analog signals-to avoid latch-up or transient overstress conditions in the MAX4674ETE+T.

Does MAX4674ETE+T support rail-to-rail analog signal operation?

Yes, the MAX4674ETE+T supports true rail-to-rail analog signal handling from GND to V+. Its CMOS switch architecture allows input and output signals to swing continuously across the full supply range without clipping or increased distortion. This capability is confirmed in the Electrical Characteristics table under "Analog Signal Range" (0V to V+) and validated in Typical Operating Characteristics plots showing R_ON stability across V_COM = 0V to V+. No external biasing is required for the MAX4674ETE+T to maintain low distortion or flat on-resistance over the entire range.

What is the function of the EN pin on MAX4674ETE+T?

The EN pin on the MAX4674ETE+T is an active-low global enable input. When EN is logic low, the device operates normally, allowing A0 to control connection between COMx and either NOx or NCx. When EN is logic high, all four COM terminals enter a high-impedance state-disconnecting all signal paths regardless of A0 state. This feature enables system-level power gating and fault isolation. The EN pin accepts voltages up to +5.5V independently of V+, making it compatible with 5V control logic even when the MAX4674ETE+T operates from 1.8V or 3.3V.

Can MAX4674ETE+T be used with 3.3V logic while powered from 1.8V?

No-the MAX4674ETE+T does not support 3.3V logic inputs when V+ = 1.8V. Logic thresholds scale with supply voltage: at V+ = 1.8V, VIH is approximately 1.0V (not 2.0V), so 3.3V logic would exceed the absolute maximum input rating of +6V only if clamped-but more critically, it violates the VIH specification. For mixed-supply operation, use the MAX4674ETE+T's 5.5V-tolerant A0/EN pins with 3.3V or 5V logic while powering V+ at 3.3V or 5V. At 1.8V V+, only 1.8V-compatible logic drivers should interface with the MAX4674ETE+T.

Is the exposed pad on MAX4674ETE+T required to be connected to ground?

Yes, the exposed pad (EP) on the MAX4674ETE+T QFN package must be soldered to a PCB ground plane. It serves as both a thermal dissipation path and an electrical ground connection for internal ESD protection structures. Maxim's datasheet explicitly states "EP = Exposed pad. Connect to GND." Failure to connect the EP compromises thermal performance-derating curves assume EP-to-GND conduction-and may degrade ESD immunity and leakage current specs. For reliable operation and compliance with the 1481mW power dissipation rating at +70°C, the MAX4674ETE+T's exposed pad must be electrically and thermally coupled to GND.