Analog Devices Inc./Maxim Integrated MAX4677EUE+

Overview

MAX4677EUE+ from Analog Devices is a quad SPST analog switch with four normally closed (NC) channels, designed for precision signal routing in low-distortion, rail-to-rail applications. It delivers 1.6Ω max on-resistance, 0.3Ω max channel matching, and 0.4Ω max on-resistance flatness over ±3.3V signal range when powered from dual ±5V supplies. Its 66MHz -3dB bandwidth and -84dB crosstalk at 1MHz make it ideal for automated test equipment and high-fidelity audio routing.

For engineers reviewing the MAX4677EUE+ datasheet, MAX4677EUE+ pinout, MAX4677EUE+ application, or MAX4677EUE+ equivalent, key selection criteria include NC-switch topology, dual-supply operation down to ±2.7V, independent logic supply (VL), guaranteed break-before-make absence (distinguishing it from MAX4679), and TSSOP-16 thermal performance (457mW at +70°C).

Technical Context

The MAX4677EUE+ implements CMOS-based SPST switches with integrated level-shifting logic interface, enabling independent VL supply (2.7V to V+) for compatibility with mixed-voltage control systems. Its architecture ensures rail-to-rail analog conduction (V– to V+) and maintains low distortion via matched R_ON and minimal charge injection (85pC).

Unlike the MAX4679, the MAX4677EUE+ lacks break-before-make timing - all four switches operate as simultaneous NC types with no guaranteed inter-channel sequencing. It supports both dual-supply (±2.7V to ±5.5V) and single-supply (+2.7V to +11V) configurations, with absolute maximum ratings of ±12V across V+/V– and -0.3V to (V+ + 0.3V) on VL/IN pins.

Key Specifications

Pinout & Package

MAX4677EUE+ is housed in a 16-pin TSSOP package (JEDEC MO-153, 5mm × 4.4mm × 1.2mm), optimized for thermal dissipation (457mW at +70°C) and high-density PCB layouts. The exposed pad variant is not specified; standard TSSOP thermal resistance applies.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4678EUE+, the MAX4677EUE+ provides inherent safety through default-closed paths, while versus ADG1414BRUZ, it offers superior design flexibility via independent VL and tighter R_ON flatness - critical for precision multiplexing where channel-to-channel consistency outweighs raw voltage range.

Availability

MAX4677EUE+ is available at Aetrix Electronics and suitable for automated test equipment, audio signal routing, and data-acquisition systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.

Supply support for MAX4677EUE+ 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

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.

The MAX4677EUE+ belongs to the MAX4677/MAX4678/MAX4679 family of low-R_ON, quad SPST analog switches engineered specifically for reed relay replacement in test, measurement, and signal conditioning applications demanding precision, speed, and reliability.

FAQ

What is the default switch state of MAX4677EUE+ at power-up?

The MAX4677EUE+ features four normally closed (NC) switches, meaning all channels conduct between COM and NC terminals when logic inputs (IN1–IN4) are at logic low (≤0.8V). At power-up with undefined logic states, internal circuitry defaults to NC closure unless actively driven high - ensuring fail-safe continuity in critical signal paths. This behavior is confirmed in the truth table and functional diagrams of the MAX4677EUE+ datasheet.

Can MAX4677EUE+ operate from a single +3.3V supply?

Yes, MAX4677EUE+ supports single-supply operation from +2.7V to +11V. With +3.3V applied to V+, GND tied to pin 5, and V− (pin 4) connected to GND, it delivers 2.7Ω max R_ON at +25°C and maintains rail-to-rail signal handling from 0V to +3.3V. Logic inputs remain compatible via VL pin, which can be tied to +3.3V or a lower logic rail as needed.

Does MAX4677EUE+ support break-before-make switching?

No, MAX4677EUE+ does not feature guaranteed break-before-make (BBM) timing. It is a pure NC-switch device with simultaneous channel control. BBM is exclusive to the MAX4679EUE+, which integrates dedicated timing circuitry for guaranteed channel isolation during transitions. Using MAX4677EUE+ in BBM-required applications risks momentary shorting and requires external timing control.

What is the maximum allowable voltage difference between V+ and V− for MAX4677EUE+?

The absolute maximum rating for MAX4677EUE+ specifies V+ to V− differential of +12V. Therefore, the largest permissible gap is +12V - for example, V+ = +5.5V and V− = -6.5V is invalid, but V+ = +5.5V and V− = -5.5V (11V total) is within specification. Exceeding +12V risks permanent damage, as stated in the Absolute Maximum Ratings table of the MAX4677EUE+ datasheet.

How does the independent VL pin improve system design with MAX4677EUE+?

The VL pin on MAX4677EUE+ allows the logic interface to operate from a separate supply (2.7V to V+), decoupling control signaling from analog supply noise. This enables direct interfacing with 1.8V FPGAs or 3.3V microcontrollers while powering analog sections from ±5V - eliminating level shifters, reducing BOM count, and improving noise immunity in mixed-signal systems using MAX4677EUE+.