Analog Devices Inc./Maxim Integrated MAX4051ACEE+T

Overview

MAX4051ACEE+T 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, ±5V dual-supply or +5V single-supply operation, 100Ω typical on-resistance, 0.1nA max off-leakage at +25°C, and TTL/CMOS logic compatibility-used in low-voltage data-acquisition systems for channel selection.

For engineers reviewing the MAX4051ACEE+T datasheet, MAX4051ACEE+T pinout, MAX4051ACEE+T application, or MAX4051ACEE+T equivalent, key selection criteria include guaranteed on-resistance matching (≤6Ω), low charge injection (≤10pC), high off-isolation (<–90dB), and QSOP-16 package compatibility with space-constrained portable instrumentation designs.

Technical Context

The MAX4051ACEE+T implements a CMOS transmission-gate architecture with independent V+ and V− supplies defining analog signal swing limits from V− to V+. Its three address inputs (ADDA, ADDB, ADDC) decode 8-channel selection via binary logic, while INH enables global disable with break-before-make timing (≤225ns).

All NO/COM pins are bidirectional and functionally interchangeable; internal ESD diodes clamp signals exceeding V+ or V−, and leakage current originates solely from reverse-biased protection diodes-not GND-enabling true floating analog paths with no ground reference required.

Key Specifications

Pinout & Package

MAX4051ACEE+T is housed in a 16-pin QSOP (Quarter-Size Outline Package) with 0.65mm pitch, 5.0mm × 4.0mm body, and exposed pad for thermal enhancement. It is rated for 0°C to +70°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4051CPE+, the MAX4051ACEE+T offers superior thermal performance and smaller footprint; versus ADG708BRUZ, it delivers essential dual-supply flexibility and lower leakage for precision analog systems-making it optimal for industrial and instrumentation designs demanding rail-to-rail fidelity.

Availability

MAX4051ACEE+T is available at Aetrix Electronics and suitable for battery-operated equipment, audio/video signal routing, and low-voltage data-acquisition systems requiring stable component supply across extended production lifecycles.

Supply support for MAX4051ACEE+T 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, and communications applications.

The MAX4051ACEE+T belongs to Maxim's low-voltage analog switch/multiplexer product line, engineered specifically for high-fidelity signal routing in space- and power-constrained systems where leakage, matching, and supply flexibility are critical.

FAQ

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

The MAX4051ACEE+T supports rail-to-rail analog signals from V− to V+. With ±5V dual supplies, this spans –5V to +5V; with +5V single supply (V− = GND), it covers 0V to +5V. Absolute maximum ratings allow V+ up to +17V and V− down to –17V, but operational analog range remains bounded by the applied supply rails. The MAX4051ACEE+T does not require a ground reference for analog signals.

Does the MAX4051ACEE+T require external level-shifting when interfaced with a 3.3V microcontroller?

No. The MAX4051ACEE+T features TTL/CMOS-compatible logic thresholds (VIL = 0.8V, VIH = 2.4V at +5V supply), which accept standard 3.3V logic levels directly. When powered from +5V, its ADDA/ADDB/ADDC and INH inputs reliably recognize 3.3V HIGH and 0V LOW without external components. The MAX4051ACEE+T maintains this compatibility across its full +2.7V to +16V single-supply range.

How does the MAX4051ACEE+T handle power-supply sequencing, and what happens if V− is powered before V+?

Proper sequencing-V+ first, then V−, followed by logic and analog signals-is recommended. If V− rises before V+, internal ESD diodes may conduct, potentially causing latch-up or excessive current. The MAX4051ACEE+T includes internal protection diodes between each NO/COM pin and both V+ and V−, but violating sequencing risks reliability. For non-sequenced systems, external blocking diodes (as shown in Figure 1 of the datasheet) are advised. This behavior is inherent to the MAX4051ACEE+T's CMOS switch architecture.

Can the NO and COM pins of the MAX4051ACEE+T be used interchangeably as inputs or outputs?

Yes. The MAX4051ACEE+T's NO and COM pins are fully bidirectional and functionally identical-any NO pin or COM pin may serve as input or output depending on system topology. Signals pass with equal fidelity in either direction, and the device imposes no directional constraints. This symmetry is explicitly confirmed in the "Pin Descriptions" section and Note on page 10 of the MAX4051ACEE+T datasheet.

What is the guaranteed on-resistance match specification for the MAX4051ACEE+T, and why is it important?

The MAX4051ACEE+T guarantees ΔRON ≤ 6Ω (max difference between highest and lowest on-resistance across all 8 channels) at +25°C with ±5V supplies. This tight matching ensures consistent gain, offset, and time constants when routing multiple sensors or signal sources through the same signal chain-critical for multi-channel data acquisition where channel-to-channel accuracy must be preserved. This spec applies uniquely to the 'A' version (MAX4051A), distinguishing it from the standard MAX4051.