Analog Devices Inc./Maxim Integrated MAX4051AEPE

Overview

MAX4051AEPE from Maxim Integrated is an 8-channel CMOS analog multiplexer with rail-to-rail signal handling, 100Ω typical on-resistance at ±5V, 0.1nA off-leakage at +25°C, and TTL/CMOS-compatible logic thresholds-designed for low-voltage data-acquisition systems requiring precise signal routing across battery-powered instrumentation.

For engineers reviewing the MAX4051AEPE datasheet, MAX4051AEPE pinout, MAX4051AEPE application, or MAX4051AEPE equivalent, key selection criteria include guaranteed on-resistance match (≤6Ω), low charge injection (≤10pC), high off-isolation (<–90dB), and dual-supply operation from ±2.7V to ±8V or single-supply from +2.7V to +16V.

Technical Context

The MAX4051AEPE implements a single 8:1 analog multiplexer using CMOS transmission-gate architecture with independent V+ and V− supplies defining the analog signal range. Its digital control uses three address lines (ADDA, ADDB, ADDC) and an inhibit input (INH) to select one of eight NOx inputs to connect to the common (COM) terminal.

All analog terminals feature ESD protection diodes to V+ and V−, enabling rail-to-rail operation but requiring proper supply sequencing to avoid forward conduction. Logic-level translation ensures compatibility across supply voltages from +2.7V to +16V or ±2.7V to ±8V without external level shifters.

Key Specifications

Pinout & Package

MAX4051AEPE is supplied in a 16-pin plastic DIP package (0°C to +70°C operating range), with through-hole mounting and standard 0.3-inch width.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4051CEPE and ADG708BRUZ, the MAX4051AEPE uniquely supports true bipolar operation (±2.7V to ±8V), delivers guaranteed 6Ω RON match and 0.1nA leakage for precision systems, and maintains pin compatibility with industry-standard 74HC4051 layouts-making it the optimal choice for battery-powered instrumentation requiring long-term stability and wide dynamic range.

Availability

MAX4051AEPE is available at Aetrix Electronics and suitable for battery-operated instrumentation, audio signal routing, and low-voltage data-acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for MAX4051AEPE 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.

The MAX4051/A series belongs to Maxim's precision analog switch product line, engineered for low-leakage, low-distortion signal routing in portable and measurement-critical systems where rail-to-rail operation and supply flexibility are essential.

FAQ

What is the maximum analog signal range supported by the MAX4051AEPE?

The MAX4051AEPE supports rail-to-rail analog signals bounded by its V+ and V− supplies. With dual supplies of ±5V, the analog range is –5V to +5V; with a single +5V supply (V− = GND), the range is 0V to +5V. The device guarantees operation across ±2.7V to ±8V dual or +2.7V to +16V single supply configurations, and internal ESD diodes clamp signals exceeding these rails.

Does the MAX4051AEPE require external level-shifting when interfaced with 3.3V microcontrollers?

No, the MAX4051AEPE does not require external level-shifting. Its ADDA, ADDB, ADDC, and INH inputs have TTL/CMOS-compatible logic thresholds (0.8V to 2.4V) that operate reliably with 3.3V logic levels across its full supply range-including when V+ = +3.3V or +5V. This eliminates need for translators in mixed-voltage systems.

How does the MAX4051AEPE handle leakage current in high-impedance sensor applications?

The MAX4051AEPE specifies 0.1nA typical off-leakage current at +25°C-guaranteed across its operating temperature range. This ultra-low leakage preserves voltage integrity at high-impedance nodes (e.g., thermistor or photodiode interfaces), minimizing measurement error and drift. Leakage remains below 5nA even at +85°C, ensuring robust performance in portable instrumentation.

Can the MAX4051AEPE be used with asymmetric dual supplies, such as +5V and –3V?

Yes, the MAX4051AEPE supports asymmetric dual supplies as long as the absolute difference between V+ and V− does not exceed +17V and each supply stays within its absolute maximum rating (V+ ≤ +17V, V− ≥ –17V). For example, V+ = +5V and V− = –3V yields a 8V span-well within spec-and enables custom analog ranges like –3V to +5V for specialized signal conditioning.

Is the MAX4051AEPE pinout compatible with the standard 74HC4051 multiplexer?

Yes, the MAX4051AEPE is fully pin-compatible with the industry-standard 74HC4051. Pin assignments for V+, GND, INH, ADDA–ADDC, COM, and NO0–NO7 match exactly-enabling direct replacement in existing PCB layouts without modification, while delivering superior specifications including lower leakage, tighter RON matching, and wider supply range.