Analog Devices Inc./Maxim Integrated MAX4666ESE

Overview

MAX4666ESE from Maxim Integrated is a quad SPST analog switch IC with two normally closed (NC) and two normally open (NO) channels, guaranteeing break-before-make switching, 5Ω max on-resistance, ±4.5V to ±20V dual-supply or +4.5V to +36V single-supply operation, and rail-to-rail signal handling - ideal for precision audio routing and automated test equipment.

For engineers reviewing the MAX4666ESE datasheet, MAX4666ESE pinout, MAX4666ESE application, or MAX4666ESE equivalent, key selection criteria include guaranteed break-before-make timing (10–125 ns), R_ON matching ≤0.5Ω between channels, <5 nA off-leakage at +85°C, and SOIC-16 package compatibility with industrial temperature range (-40°C to +85°C).

Technical Context

The MAX4666ESE implements CMOS-based transmission-gate architecture with independent TTL/CMOS-compatible digital control inputs (logic thresholds: 0.8V low / 2.4V high) and separate logic supply (VL) pin enabling level-shifting. Its internal protection diodes clamp signals exceeding V+ or V−, supporting robust rail-to-rail analog signal routing up to ±20V.

Break-before-make behavior is architecturally enforced across Switches 1 & 4 (NO) and Switches 2 & 3 (NC), preventing momentary short-circuits during state transitions. Dynamic performance includes 90–175 ns turn-off time and -62 dB off-isolation at 1 MHz, validated under dual ±15V and single +12V supply conditions.

Key Specifications

Pinout & Package

MAX4666ESE is housed in a 16-pin narrow SOIC (SO/DIP) package, 3.9mm width, with standard 1.27mm pitch and exposed pad not present. Pin 1 is index-marked; device orientation follows JEDEC MS-012.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1414BRUZ and TS5A3157DCKR, the MAX4666ESE uniquely combines guaranteed break-before-make timing, wide dual-supply operation, and industrial temperature rating - making it the only option qualified for reed-relay replacement in ATE and avionics signal conditioning where sequencing integrity and voltage range are non-negotiable.

Availability

MAX4666ESE is available at Aetrix Electronics and suitable for automated test equipment, avionics sensor interfaces, and professional audio routing systems requiring stable component supply across extended temperature and voltage ranges.

Supply support for MAX4666ESE 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 MAX466x family was designed specifically for high-reliability, low-distortion analog signal routing in environments where mechanical relays fail - emphasizing parametric guarantees (R_ON match, break-before-make, leakage) over generic switching functionality.

FAQ

What is the guaranteed break-before-make timing specification for MAX4666ESE?

The MAX4666ESE guarantees a break-before-make time delay of 10 ns minimum to 125 ns maximum under single-supply (+12V) conditions at +25°C. This timing is architecturally enforced between its two NO (Switches 1 & 4) and two NC (Switches 2 & 3) channels, ensuring no overlap conduction during state transitions - a critical requirement for fault-tolerant signal routing in the MAX4666ESE.

Can MAX4666ESE operate from a single 5V supply?

No, the MAX4666ESE requires a minimum analog supply of +4.5V for single-supply operation, and its logic inputs are specified for TTL/CMOS thresholds (0.8V/2.4V) referenced to VL. While VL may be tied to +5V, the analog rails (V+ and V−) must meet absolute minimums: V+ ≥ +4.5V and V− ≤ 0V (GND). Thus, true 5V-only operation is not supported - the MAX4666ESE needs at least +4.5V on V+ and GND on V−.

How does the VL pin function in MAX4666ESE, and what voltage should it be set to?

The VL pin on the MAX4666ESE supplies the logic threshold reference independently from analog rails, enabling level-shifted control. It must be connected to a stable supply between (GND − 0.3V) and (V+ + 0.3V); typical use is +5V or +3.3V. Setting VL = +5V ensures compatible 0.8V/2.4V logic thresholds regardless of whether V+ is +12V or ±15V - a key design flexibility built into the MAX4666ESE.

Is MAX4666ESE pin-compatible with MAX4664ESE or MAX4665ESE?

Yes, the MAX4666ESE shares identical pinout, package (16-pin narrow SOIC), and footprint with MAX4664ESE and MAX4665ESE. All three devices use the same SOIC-16 layout and terminal assignments (INx, COMx, NCx/NOx, V+, V−, VL, GND), allowing direct PCB substitution - though functional behavior differs: MAX4664ESE has four NC switches, MAX4665ESE has four NO, and only the MAX4666ESE provides the two-NC/two-NO configuration with guaranteed break-before-make.

What is the maximum allowable voltage difference between V+ and V− for MAX4666ESE?

The MAX4666ESE specifies an absolute maximum V+ to V− differential of +44V. This limit applies regardless of individual rail values - for example, V+ = +36V and V− = -8V yields 44V differential and is acceptable, whereas V+ = +30V and V− = -15V (45V differential) exceeds rating and risks permanent damage. This constraint is explicitly defined in the Absolute Maximum Ratings table for the MAX4666ESE.