Analog Devices Inc./Maxim Integrated MAX4622ESE+

Overview

The MAX4622ESE+ from Maxim Integrated is a precision dual SPDT analog switch with two normally closed (NC) and two normally open (NO) poles, 5Ω max on-resistance, guaranteed 0.5Ω channel-to-channel R_ON match, and break-before-make operation - designed for low-distortion signal routing in test equipment and communication systems.

For engineers reviewing the MAX4622ESE+ datasheet, MAX4622ESE+ pinout, MAX4622ESE+ application, or MAX4622ESE+ equivalent, key selection criteria include rail-to-rail analog signal handling (±18V bipolar / +36V single supply), sub-200ns turn-off time, <5nA off-leakage at +85°C, and verified pin compatibility with DG403.

Technical Context

The MAX4622ESE+ implements monolithic CMOS analog switch architecture with integrated logic-level translation (VL pin), enabling TTL/CMOS-compatible control across wide supply ranges. Its dual SPDT topology guarantees break-before-make timing (t_D = 75ns typ) to prevent signal shorting during state transitions.

It supports rail-to-rail analog signal switching from V− to V+, with flat on-resistance (∆R_ON ≤ 0.5Ω max) over full signal range and minimal charge injection (45pC typ), making it suitable for precision data-acquisition front-ends and audio routing where signal integrity is critical.

Key Specifications

Pinout & Package

MAX4622ESE+ is housed in a 16-pin narrow SOIC (SO/DIP) package with 1.27mm pitch, JEDEC MS-012AC compliant, footprint compatible with industry-standard 16-pin SOIC layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG408BRUZ and TS5A3157DCKR, the MAX4622ESE+ uniquely combines dual SPDT topology, guaranteed break-before-make, bipolar supply support, and sub-5Ω R_ON - making it the only option among the three qualified for high-reliability, rail-to-rail, multi-voltage test and avionics signal routing.

Availability

MAX4622ESE+ is available at Aetrix Electronics and suitable for test equipment, military radios, PBX systems, and avionics requiring stable component supply across extended temperature (-40°C to +85°C) and long-term production continuity.

Supply support for MAX4622ESE+ 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 fabless semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.

The MAX462x family was engineered for precision analog switching in mission-critical systems demanding low distortion, high reliability, and seamless replacement of legacy mechanical relays and discrete switch solutions.

FAQ

What is the maximum allowable supply voltage difference between V+ and V− for the MAX4622ESE+?

The MAX4622ESE+ absolute maximum rating specifies that the voltage difference between V+ and V− must not exceed +44V. This limit ensures safe operation of internal protection diodes and prevents latch-up or permanent damage. Operating at ±18V (36V total) complies fully, but exceeding ±22V (44V) risks irreversible failure. Always observe this constraint in both steady-state and transient conditions.

Does the MAX4622ESE+ require external pull-up resistors on its logic inputs (IN1/IN2)?

No, the MAX4622ESE+ does not require external pull-up resistors on IN1 or IN2. Its TTL/CMOS-compatible inputs have built-in threshold detection (V_IL = 0.8V max, V_IH = 2.4V min) and draw less than 0.5µA input current across temperature. Direct connection to microcontroller GPIO or FPGA outputs is sufficient - adding pull-ups may cause unintended logic states or increase power consumption unnecessarily.

Can the MAX4622ESE+ switch signals beyond its supply rails, such as ±20V with ±15V supplies?

No, the MAX4622ESE+ cannot reliably switch signals beyond its supply rails. Its rail-to-rail specification means it handles analog signals from V− to V+, not beyond. Applying ±20V signals with ±15V supplies exceeds the absolute maximum rating of (V− − 0.3V) to (V+ + 0.3V) on COM/NO/NC pins and will forward-bias internal ESD diodes, causing excessive current and potential damage. Signal range must stay strictly within V− to V+.

Is the VL pin mandatory for operation of the MAX4622ESE+?

Yes, the VL pin is mandatory. It provides the logic-level reference for the internal level-shifter and must be connected to a stable +2.7V to +5.5V supply - independent of V+. Leaving VL unconnected or floating disables proper logic interpretation, resulting in undefined switch states and possible shoot-through. VL decouples digital noise from analog performance and is not optional even in single-supply configurations.

How does the MAX4622ESE+ achieve guaranteed break-before-make timing?

The MAX4622ESE+ achieves guaranteed break-before-make through internal asynchronous logic with fixed propagation delay staging: the NC path is disabled ≥75ns before the NO path is enabled, verified across process/voltage/temperature corners. This timing is inherent to the monolithic design and requires no external timing components. It prevents momentary short-circuits in applications like audio crosspoints or power sequencing where simultaneous conduction would cause signal corruption or fault currents.