Analog Devices Inc./Maxim Integrated MAX4782ETE

Overview

MAX4782ETE from Maxim Integrated is a high-speed, low-voltage, dual 4-channel CMOS analog multiplexer configured for bidirectional rail-to-rail signal routing. It features 0.7Ω on-resistance at +3V supply, 11ns turn-on time, and operates from +1.6V to +3.6V. Designed for audio signal routing in portable instrumentation and low-voltage data-acquisition systems, it supports 150mA continuous channel current.

For engineers reviewing the MAX4782ETE datasheet, MAX4782ETE pinout, MAX4782ETE application, or MAX4782ETE equivalent, key selection criteria include on-resistance matching (0.3Ω), break-before-make timing (2ns), logic-level compatibility (+1.8V CMOS), and thin QFN thermal performance in space-constrained designs.

Technical Context

The MAX4782ETE integrates two independent 4:1 analog multiplexers sharing address inputs A and B, with separate X and Y output paths. Each multiplexer uses low-threshold CMOS transmission gates enabling rail-to-rail analog operation down to 1.6V supply.

Its digital interface accepts +1.8V CMOS logic levels (VIH = 1.4V min, VIL = 0.5V max) and includes an active-high ENABLE input that opens all switches when high. The device exhibits 0.1Ω on-resistance flatness and 0.3Ω channel-to-channel R_ON matching at +3V, critical for precision signal routing integrity.

Key Specifications

Pinout & Package

MAX4782ETE is housed in a 3mm × 3mm, 16-pin thin QFN package with exposed thermal pad (EP) connected to GND. This thermally enhanced footprint supports high-density PCB layouts while maintaining low junction-to-board thermal resistance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4782EUE+, the MAX4782ETE offers superior thermal performance and 30% smaller footprint; versus TMUX1308PWR, it delivers 6× lower on-resistance and true dual independent mux architecture essential for parallel signal routing.

Availability

MAX4782ETE is available at Aetrix Electronics and suitable for portable audio switching, medical sensor multiplexing, and industrial data-acquisition systems requiring stable component supply with RoHS-compliant packaging and extended temperature support.

Supply support for MAX4782ETE 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, medical, and communications applications.

The MAX4782ETE belongs to Maxim's high-speed analog switch/multiplexer product line, engineered specifically for low-voltage, low-distortion signal routing in battery-powered and space-constrained electronic systems.

FAQ

What is the maximum analog signal voltage range supported by the MAX4782ETE?

The MAX4782ETE supports rail-to-rail analog signals from 0V to V_CC, where V_CC ranges from +1.6V to +3.6V. At V_CC = +3.0V, this means signals from 0V to +3.0V pass unattenuated through the switch channels. Exceeding V_CC or going below GND risks forward-biasing internal ESD diodes, so the MAX4782ETE must be used within these absolute limits to avoid leakage or damage.

Does the MAX4782ETE require external pull-up or pull-down resistors on its address pins A and B?

No, the MAX4782ETE does not require external pull-up or pull-down resistors on address pins A and B. Its digital inputs have guaranteed VIH ≥ 1.4V and VIL ≤ 0.5V at +3V supply, and input leakage is limited to ±1µA. When driven directly by CMOS logic (e.g., microcontroller GPIO), the MAX4782ETE operates reliably without external biasing - a key advantage confirmed in the MAX4782ETE datasheet's Electrical Characteristics table.

Can the MAX4782ETE be used with a +1.8V supply, and how does performance change?

Yes, the MAX4782ETE is fully specified for +1.8V operation. At +1.8V, typical on-resistance increases to 1.6Ω (vs. 0.7Ω at +3V), turn-on time extends to 17ns, and logic thresholds adjust to VIH ≥ 1.0V/VIL ≤ 0.4V. All functionality remains intact, and the device maintains rail-to-rail analog range (0V to +1.8V). This makes the MAX4782ETE suitable for ultra-low-power applications powered by single LiFePO₄ or alkaline cells.

Is the exposed pad (EP) on the MAX4782ETE package electrically connected, and how should it be handled?

Yes, the exposed pad (EP) on the MAX4782ETE thin QFN package is internally connected to GND and must be soldered to a PCB ground plane. Per Maxim's package drawing T1633+4, the EP serves as both thermal dissipation path and electrical ground reference. Leaving it unconnected degrades thermal performance and may cause instability; connecting it to anything other than GND violates absolute maximum ratings and risks latch-up. Proper EP grounding ensures reliable operation at full 150mA channel current.

How does the ENABLE pin function, and what happens to channel states when it is asserted?

The ENABLE pin on the MAX4782ETE is active-high: when driven to logic high (≥1.4V at +3V supply), it forces all analog switches into the open (non-conducting) state regardless of address pin states. When ENABLE is low (≤0.5V), normal address-controlled switching resumes. This behavior is explicitly defined in the MAX4782ETE truth table and pin description - enabling system-level power gating or fault-safe shutdown without altering address logic.