Analog Devices Inc./Maxim Integrated MAX4051ACEE+

Overview

MAX4051ACEE+ 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, and TTL/CMOS-compatible logic thresholds-used in low-voltage data-acquisition systems for channel selection between sensors and ADC inputs.

For engineers reviewing the MAX4051ACEE+ datasheet, MAX4051ACEE+ pinout, MAX4051ACEE+ application, or MAX4051ACEE+ equivalent, key selection criteria include guaranteed on-resistance matching (≤6Ω), low charge injection (≤10pC), high off-isolation (<−90dB), and operation from single +2.7V to +16V or dual ±2.7V to ±8V supplies.

Technical Context

The MAX4051ACEE+ implements a CMOS transmission-gate architecture with independent control of eight analog paths via three binary address lines (ADDA, ADDB, ADDC) and an active-low inhibit input (INH). Its internal logic-level translators isolate digital control signals from analog supply domains while enabling compatibility across ±5V dual and +5V single-supply configurations.

All NOx and COM pins are bidirectional and interchangeable; no ground reference is required for analog signals, which are bounded only by V+ and V− rails. The A-suffix variant is fully characterized for on-resistance flatness (≤10Ω), channel-to-channel match (≤6Ω), and leakage performance across temperature.

Key Specifications

Pinout & Package

MAX4051ACEE+ is housed in a 16-pin QSOP (Quarter-Size Outline Package) with 0.15mm lead pitch and exposed pad for thermal enhancement. Pin 1 is marked by a dot; pin numbering follows standard counter-clockwise convention from the top-left corner.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4051CSE+ and ADG1408BRUZ, the MAX4051ACEE+ offers identical performance in a space-saving QSOP package optimized for compact, battery-powered designs requiring zero-fuss parallel control and guaranteed low-leakage operation at room temperature.

Availability

MAX4051ACEE+ is available at Aetrix Electronics and suitable for battery-operated equipment, audio signal routing, and low-voltage data-acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing from authorized channels.

Supply support for MAX4051ACEE+ 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, medical, communications, and consumer applications.

The MAX4051ACEE+ belongs to Maxim's low-voltage analog switch/multiplexer product line, engineered for rail-to-rail signal integrity, ultra-low leakage, and seamless integration into portable and high-accuracy measurement systems.

FAQ

What is the maximum analog signal voltage range supported by the MAX4051ACEE+?

The MAX4051ACEE+ supports rail-to-rail analog signals from V− to V+, meaning it passes signals spanning the full range between its negative and positive supply rails. With ±5V dual supplies, this is −5V to +5V; with a +5V single supply (V− = GND), it handles 0V to +5V. Absolute maximum analog voltage is limited by the absolute ratings: (V− − 2V) to (V+ + 2V).

Does the MAX4051ACEE+ require external pull-up or pull-down resistors on its address lines?

No, the MAX4051ACEE+ does not require external biasing on ADDA, ADDB, or ADDC. Its digital inputs have guaranteed TTL/CMOS-compatible thresholds (0.8V low, 2.4V high at +5V supply), and internal input structures ensure valid logic states with direct connection to microcontroller GPIOs or logic gates. Floating inputs are not recommended and may cause undefined switching behavior.

Can the MAX4051ACEE+ be used with a single +3.3V supply?

Yes, the MAX4051ACEE+ operates with a single +3.3V supply (V+ = +3.3V, V− = GND). At this voltage, typical on-resistance rises to ~525Ω (max 700Ω), and switching times increase (e.g., t_ON up to 600ns), but all functionality-including logic compatibility and rail-to-rail analog range-is preserved. Leakage and distortion specs remain valid per datasheet characterization.

How does the INH pin function in the MAX4051ACEE+?

The INH (inhibit) pin is an active-high digital input that disables all analog switches when driven high, forcing COM to disconnect from all NOx terminals regardless of address inputs. When pulled low or grounded, normal address decoding resumes. It provides hardware-level channel disable capability-useful for power sequencing, fault isolation, or global mute functions in the MAX4051ACEE+.

Is the MAX4051ACEE+ pin-compatible with the industry-standard 74HC4051?

Yes, the MAX4051ACEE+ is explicitly designed as a pin-compatible upgrade to the 74HC4051. It shares identical pinout, logic-level compatibility, and functional block diagram. However, the MAX4051ACEE+ delivers superior analog performance: lower on-resistance (100Ω vs. ~120Ω), tighter channel matching (6Ω vs. unspecified), and drastically lower leakage (0.1nA vs. ~100nA), making it a direct drop-in with measurable system-level benefits.