Analog Devices Inc./Maxim Integrated MAX4051CEE

Overview

MAX4051CEE 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, 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 MAX4051CEE datasheet, MAX4051CEE pinout, MAX4051CEE application, or MAX4051CEE equivalent, key selection criteria include guaranteed on-resistance match (6Ω), single-supply operation down to +2.7V, low charge injection (2pC), high off-isolation (<–90dB), and compatibility with 74HC4051-based layouts.

Technical Context

The MAX4051CEE implements a CMOS transmission-gate architecture with independent V+ and V− supplies enabling true bipolar analog signal routing from –5V to +5V. Its three address lines (ADDA, ADDB, ADDC) decode 8 channels via binary input, while INH provides global inhibit control.

Internal logic-level translators isolate digital control signals from analog supply domains, ensuring stable switching across dual (±2.7V to ±8V) or single (+2.7V to +16V) supply configurations without level-shifting circuitry.

Key Specifications

Pinout & Package

MAX4051CEE is supplied in a 16-pin QSOP package (5.3mm × 10.2mm, 0.65mm pitch) with exposed pad option not applicable; RoHS-compliant, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4051ACSE and 74HC4051D, the MAX4051CEE offers identical performance in a smaller QSOP footprint with superior leakage and matching specs-making it optimal for space-constrained, low-leakage designs where A-suffix characterization is required.

Availability

MAX4051CEE 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 extended temperature ranges (0°C to +70°C).

Supply support for MAX4051CEE 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 and mixed-signal ICs for industrial, medical, and communications markets.

The MAX4051 family targets low-voltage, low-leakage analog signal routing in portable and high-reliability systems-emphasizing rail-to-rail operation, guaranteed matching, and robust supply flexibility.

FAQ

What is the maximum analog signal voltage range supported by the MAX4051CEE?

The MAX4051CEE supports rail-to-rail analog signals from V− to V+. With ±5V supplies, this is –5V to +5V; with a +5V single supply (V− = GND), it is 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 supplies. The MAX4051CEE does not require signal biasing.

Does the MAX4051CEE require external level-shifting when interfaced with a 3.3V microcontroller?

No, the MAX4051CEE does not require external level-shifting with a 3.3V microcontroller. Its logic inputs (ADDA, ADDB, ADDC, INH) have guaranteed TTL/CMOS-compatible thresholds (VIL ≤ 0.8V, VIH ≥ 2.4V) that accept 3.3V logic highs directly-even when V+ is set to +5V or +12V. This eliminates added components in mixed-voltage systems.

How does the MAX4051CEE handle power-supply sequencing during startup?

The MAX4051CEE recommends powering V+ first, then V−, followed by logic inputs and analog signals. Improper sequencing may cause latch-up or excessive leakage. If controlled sequencing isn't feasible, external blocking diodes (D1, D2) can be added in series with V+ and V− pins per Figure 1 in the datasheet-though this reduces usable analog range by ~1.2V total and is not recommended for single-supply ground-referenced signals.

Is the MAX4051CEE pinout identical to the industry-standard 74HC4051?

Yes, the MAX4051CEE is pin-for-pin compatible with the 74HC4051 in the same 16-pin QSOP package. Pin functions-including NO0–NO7, COM, ADDA–ADDC, INH, V+, V−, and GND-match exactly. This allows direct substitution without PCB modification, though designers should verify supply voltage compatibility and leakage requirements, as the MAX4051CEE offers tighter specifications.

What is the guaranteed on-resistance match specification for the MAX4051CEE?

The MAX4051CEE (A-suffix variant) guarantees a maximum on-resistance match (∆RON = RON_MAX − RON_MIN) of 6Ω across all eight channels at TA = +25°C and ±5V supplies. This specification is production-tested and ensures consistent channel-to-channel gain in ratiometric measurement systems such as multi-sensor front-ends feeding a shared ADC.