Analog Devices Inc./Maxim Integrated MAX4051EEE+

Overview

MAX4051EEE+ from Maxim Integrated is an 8-channel CMOS analog multiplexer configured as a single-pole, eight-throw (SP8T) switch with rail-to-rail signal handling, 100Ω typical on-resistance at ±5V supplies, 0.1nA max off-leakage at +25°C (A-suffix variant), and TTL/CMOS-compatible logic thresholds. It operates from dual supplies (±2.7V to ±8V) or single supply (+2.7V to +16V), and is used in low-voltage data-acquisition systems for channel selection.

For engineers reviewing the MAX4051EEE+ datasheet, MAX4051EEE+ pinout, MAX4051EEE+ application, or MAX4051EEE+ equivalent, key selection criteria include guaranteed on-resistance match (6Ω), low charge injection (2pC), high off-isolation (<–90dB), and compatibility with 74HC4051-based layouts in battery-powered instrumentation and audio routing.

Technical Context

The MAX4051EEE+ implements a CMOS transmission-gate architecture with independent V+ and V− analog supply rails, enabling true rail-to-rail analog signal switching across ±8V differential range. Its digital interface uses level-translating circuitry to maintain TTL/CMOS compatibility across supply voltages from +2.7V to +16V or ±2.7V to ±8V.

It features break-before-make switching with 30ns typical delay, low crosstalk (<–90dB at 100kHz), and on-resistance flatness of 10Ω over ±3V signal range - critical for precision multiplexing in sensor front-ends and programmable gain stages.

Key Specifications

Pinout & Package

MAX4051EEE+ is housed in a 16-pin QSOP (Quarter-Size Outline Package) with 0.15mm lead pitch and exposed pad for thermal performance. Pin numbering follows standard JEDEC MS-012 outline.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4051CSE+, MAX4051EEE+ offers superior thermal performance and smaller footprint; versus 74HC4051D, it delivers guaranteed low leakage, tighter RON matching, and true bipolar supply flexibility - essential for industrial and medical signal chains.

Availability

MAX4051EEE+ is available at Aetrix Electronics and suitable for battery-operated equipment, audio and video signal routing, and low-voltage data-acquisition systems requiring stable component supply across industrial temperature ranges.

Supply support for MAX4051EEE+ 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 MAX4051/A series belongs to Maxim's low-voltage analog switch portfolio, engineered for high-fidelity signal routing in resource-constrained systems where leakage, on-resistance matching, and supply flexibility are critical.

FAQ

What is the maximum supply voltage range supported by the MAX4051EEE+?

The MAX4051EEE+ supports dual supplies from ±2.7V to ±8V (V+ to V− ≤ 17V) or single supply from +2.7V to +16V. Absolute maximum ratings allow V+ up to +17V and V− down to −17V relative to GND, but continuous operation must stay within specified ranges to ensure reliability and parameter guarantees. Operation outside these ranges risks permanent damage.

Does the MAX4051EEE+ require external pull-up or pull-down resistors on its address lines?

No, the MAX4051EEE+ does not require external pull-up or pull-down resistors on ADDA, ADDB, or ADDC. Its digital inputs have guaranteed TTL/CMOS-compatible thresholds (0.8V low, 2.4V high at +5V) and low input current (±1µA), allowing direct connection to microcontroller GPIOs or logic buffers without additional biasing components.

How does the MAX4051EEE+ handle analog signals that exceed the supply rails?

The MAX4051EEE+ includes internal ESD-protection diodes between each analog pin (NO, COM) and both V+ and V−. If an analog signal exceeds V+ or falls below V−, the corresponding diode conducts, clamping the voltage. This limits overvoltage but requires external current limiting to avoid exceeding the ±30mA absolute maximum pin current rating.

Is the MAX4051EEE+ pin-compatible with the standard 74HC4051 in QSOP package?

Yes, the MAX4051EEE+ is pin-compatible with the 74HC4051 in 16-pin QSOP. Both share identical pinout (COM, NO0–NO7, ADDA–ADDC, INH, V+, V−, GND), enabling drop-in replacement. However, the MAX4051EEE+ adds guaranteed low leakage (0.1nA), tighter RON matching (6Ω), and dual-supply operation down to ±2.7V - enhancements beyond the 74HC4051 specification.

What is the typical charge injection value for the MAX4051EEE+, and why does it matter?

The MAX4051EEE+ has a typical charge injection of 2pC (max 10pC). This matters because injected charge causes voltage glitches on high-impedance nodes (e.g., sample-and-hold capacitors or sensor outputs), directly impacting measurement accuracy. At 1nF load capacitance, 2pC yields only 2mV error - critical for 12-bit+ data acquisition systems where such errors must be minimized.