Analog Devices Inc./Maxim Integrated MAX4051ESE+

Overview

MAX4051ESE+ 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, <0.04% THD at 600Ω load, and 0.1nA max off-leakage at +25°C. It serves in low-voltage data-acquisition systems for channel selection between sensors and ADC inputs.

For engineers reviewing the MAX4051ESE+ datasheet, MAX4051ESE+ pinout, MAX4051ESE+ application, or MAX4051ESE+ equivalent, key selection criteria include guaranteed on-resistance match (6Ω), dual-supply operation (±2.7V to ±8V), single-supply compatibility (+2.7V to +16V), TTL/CMOS logic thresholds, and -90dB off-isolation at 100kHz.

Technical Context

The MAX4051ESE+ implements a CMOS transmission-gate architecture with independent control of eight analog paths via three address bits (ADDA, ADDB, ADDC) and an active-low inhibit (INH). Its internal logic-level translators isolate digital control signals from analog supply rails (V+, V−), enabling robust operation across asymmetric dual supplies or single-ended configurations.

All NOx and COM pins are bidirectional and interchangeable; no dedicated input/output assignment exists. The device guarantees monotonic on-resistance flatness (≤10Ω) over its full analog signal range (V− to V+) and exhibits break-before-make switching with ≤75ns delay to prevent signal shorting during channel transitions.

Key Specifications

Pinout & Package

MAX4051ESE+ is housed in a 16-pin narrow SOIC (SO) package with standard 150-mil width and 0.050″ lead pitch. Pin 1 is marked with a beveled corner or dot; the package is RoHS-compliant and rated for operation from -40°C to +85°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG408BRZ and 74HC4051D, the MAX4051ESE+ delivers superior leakage performance (0.1nA vs. ≥1nA), tighter RON matching (6Ω vs. ≥15Ω), and true dual-supply flexibility - making it optimal for precision, low-power, and mixed-rail instrumentation.

Availability

MAX4051ESE+ is available at Aetrix Electronics and suitable for industrial sensor multiplexing, portable audio signal routing, and battery-powered data loggers requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for MAX4051ESE+ 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 high-performance analog and mixed-signal ICs for precision, power, and interface applications in industrial, medical, and communications markets.

The MAX4051ESE+ belongs to Maxim's low-voltage CMOS analog switch/multiplexer product line, engineered for rail-to-rail signal integrity, ultra-low leakage, and seamless integration into battery-operated and precision measurement systems.

FAQ

What is the maximum analog signal voltage range supported by the MAX4051ESE+?

The MAX4051ESE+ supports rail-to-rail analog signals from V− to V+. With dual supplies of ±5V, the full analog range is -5V to +5V. In single-supply mode (V− = GND), the range is 0V to V+, up to +16V. Exceeding V+ or V− risks forward-biasing internal ESD diodes, so signal clamping must be externally managed if overvoltage is possible.

Does the MAX4051ESE+ require external pull-up or pull-down resistors on its address or inhibit pins?

No, the MAX4051ESE+ does not require external biasing on ADDA, ADDB, ADDC, or INH. Its digital inputs have guaranteed TTL/CMOS-compatible thresholds (0.8V low, 2.4V high at +5V), and input leakage is ±1µA max. Direct connection to microcontroller GPIOs or FPGA outputs is sufficient; INH should be held low (GND) for normal operation.

Can the MAX4051ESE+ operate reliably at +3.3V single supply?

Yes, the MAX4051ESE+ is fully specified for single-supply operation from +2.7V to +16V. At +3.3V, typical on-resistance is ~250Ω (max 700Ω), and timing parameters remain functional. While RON increases versus ±5V operation, the device maintains guaranteed leakage (<0.1nA), logic compatibility, and rail-to-rail signal handling - ideal for low-voltage portable systems.

How does the MAX4051ESE+ handle bidirectional signal flow between COM and NOx pins?

The MAX4051ESE+ has no intrinsic directionality: COM and NOx pins are electrically identical and fully interchangeable. Signals pass with equal fidelity in either direction - from COM to NOx or NOx to COM - with identical RON, capacitance, and leakage characteristics. This enables flexible routing in both source-driven and load-driven topologies without design constraints.

Is the MAX4051ESE+ pin-compatible with the standard 74HC4051?

Yes, the MAX4051ESE+ is explicitly designed as a pin-compatible upgrade to the 74HC4051. Both use identical 16-pin SOIC footprints and share identical pin assignments (COM, NO0–NO7, ADDA–ADDC, INH, V+, V−, GND). No PCB or schematic changes are needed - the MAX4051ESE+ improves leakage, RON match, and supply flexibility while maintaining full functional and mechanical compatibility.