Analog Devices Inc./Maxim Integrated MAX4676EUT

Overview

MAX4676EUT from Maxim Integrated is a single-pole, single-throw (SPST) analog switch with normally closed (NC) configuration, designed for precision signal routing in low-distortion, rail-to-rail applications. It delivers 3Ω maximum on-resistance (RON), 0.7Ω RON flatness, and <0.1nA off-leakage at +25°C, operating from dual ±2.7V to ±5.5V or single +2.7V to +5.5V supplies - ideal for ADC front-ends and automated test equipment.

For engineers reviewing the MAX4676EUT datasheet, MAX4676EUT pinout, MAX4676EUT application, or MAX4676EUT equivalent, key selection criteria include NC switching behavior, sub-1nA leakage performance, 250MHz -3dB bandwidth, dual/single supply flexibility, and SOT23-6 footprint compatibility with space-constrained PCB layouts.

Technical Context

The MAX4676EUT implements a CMOS transmission-gate architecture optimized for low charge injection (31pC typical) and high off-isolation (-75dB at 1MHz under dual supply). Its logic input accepts standard TTL/CMOS levels (VIH = 2.4V, VIL = 0.8V), with propagation delays tightly controlled across temperature: tON ≤ 375ns and tOFF ≤ 125ns (dual ±4.5V, +25°C).

It supports rail-to-rail analog signal handling from V− to V+, enabling full-swing operation in ±5V systems or 0–5V single-supply configurations. Internal ESD protection and guaranteed operation over −40°C to +85°C ensure robustness in industrial and avionics signal-path designs without external clamping diodes when sequencing is controlled.

Key Specifications

Pinout & Package

MAX4676EUT is housed in a 6-pin SOT23-6 package (JEDEC MO-178AA), measuring 2.9mm × 1.6mm × 1.1mm, with gull-wing leads and 0.95mm pitch. The package supports reflow soldering and meets JEDEC J-STD-020 moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1419BRMZ and TS5A23157DCUR, the MAX4676EUT uniquely balances ultra-low leakage (<0.1nA), dual-supply flexibility, and SOT23-6 compactness - making it the preferred choice for space-constrained, low-distortion, wide-temperature industrial and test equipment designs.

Availability

MAX4676EUT is available at Aetrix Electronics and suitable for automated test equipment, avionics signal conditioning, and high-precision ADC front-end multiplexing requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for MAX4676EUT 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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing markets.

The MAX4675/MAX4676 family was engineered for low-distortion, rail-to-rail analog switching in mission-critical signal-path applications - emphasizing leakage control, bandwidth, and supply flexibility over cost or integration density.

FAQ

What is the logic polarity of the MAX4676EUT control input?

The MAX4676EUT features active-low logic control: when the IN pin is driven low (≤ 0.8V), the NC and COM terminals are connected; when IN is high (≥ 2.4V), the switch opens. This normally closed behavior provides inherent continuity during power-down or logic fault conditions - a key safety feature in the MAX4676EUT design for applications like avionics and test fixtures.

Can the MAX4676EUT operate from a single 3.3V supply?

Yes, the MAX4676EUT supports single-supply operation from +2.7V to +5.5V. At +3.3V, its typical on-resistance is 1.6Ω and turn-off time is 150ns (max), with off-isolation of −65dB at 1MHz. However, rail-to-rail signal swing is limited to 0V to +3.3V - unlike dual-supply mode which enables ±3.3V analog range. This makes the MAX4676EUT viable in 3.3V digital systems interfacing with unipolar analog sensors.

How does the MAX4676EUT handle overvoltage conditions on analog pins?

The MAX4676EUT includes internal ESD protection diodes on NO/NC/COM pins, clamping signals to V+ + 0.3V and V− − 0.3V. If analog voltages exceed supply rails, forward current must be limited to <10mA to avoid damage. For robust overvoltage tolerance beyond ±6V, external series resistors or discrete clamps are recommended - the MAX4676EUT itself is not rated for sustained overvoltage operation outside its absolute maximum ratings.

What is the maximum continuous current rating for the MAX4676EUT analog path?

The MAX4676EUT supports ±100mA continuous current through its COM, NC, or NO terminals - verified across the full −40°C to +85°C operating range. Peak pulsed current is ±200mA (1ms, 10% duty cycle). Exceeding these limits risks thermal runaway or metallization failure. For high-current applications, derating is advised above +70°C ambient due to 691mW max power dissipation in the SOT23-6 package.

Does the MAX4676EUT require external bypass capacitors?

Yes - a 0.1µF ceramic capacitor placed between V+ and GND (or V− in dual-supply mode) is required for stable operation. This bypass suppresses high-frequency switching noise, improves logic noise margin, and prevents coupling into adjacent analog circuitry. Without it, the MAX4676EUT may exhibit erratic switching or increased crosstalk, especially in high-speed or high-density layouts.