Analog Devices Inc./Maxim Integrated MAX4623CSE+

Overview

The MAX4623CSE+ from Maxim Integrated is a dual, normally-open (NO), single-pole/single-throw (SPST) analog switch IC designed for precision signal routing in low-distortion applications. It delivers 5Ω maximum on-resistance with ≤0.5Ω matching between channels, <5nA off-leakage at +85°C, and switching times of <250ns (tON) / <200ns (tOFF), operating from +4.5V to +36V single supply or ±4.5V to ±18V bipolar supplies.

For engineers reviewing the MAX4623CSE+ datasheet, MAX4623CSE+ pinout, MAX4623CSE+ application, or MAX4623CSE+ equivalent, key selection criteria include guaranteed R_ON matching, rail-to-rail analog signal handling, break-before-make timing (not applicable-MAX4623 is SPST NO), and compatibility with TTL/CMOS logic inputs across wide supply ranges.

Technical Context

The MAX4623CSE+ implements monolithic CMOS analog switch architecture with integrated protection diodes and logic-level translation circuitry. Its dual SPST topology provides independent channel control via separate IN1/IN2 digital inputs, supporting bidirectional analog signal flow from V− to V+ without polarity restriction.

All channels guarantee flat on-resistance (∆R_ON ≤ 0.5Ω) over the full analog signal range and maintain sub-5nA off-leakage at +85°C. Supply operation supports both single-ended (+4.5V to +36V) and split-rail (±4.5V to ±18V) configurations while preserving TTL/CMOS input compatibility through dedicated VL pin.

Key Specifications

Pinout & Package

MAX4623CSE+ is housed in a 16-pin narrow SOIC (SO/DIP) package with exposed pad not present; thermal performance rated at 696mW at +70°C ambient with 8.70mW/°C derating.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4623CSE+, MAX4623ESE+ offers identical performance with extended temperature qualification, while ADG408BRUZ trades channel count and cost for reduced precision-making MAX4623CSE+ optimal for dual-channel, high-matching applications.

Availability

MAX4623CSE+ is available at Aetrix Electronics and suitable for reed relay replacement, test equipment signal routing, and avionics sensor interfacing requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for MAX4623CSE+ 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 high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.

The MAX462x family targets precision analog switching applications demanding low R_ON, tight matching, and wide supply flexibility-specifically engineered for upgrading mechanical relays and legacy analog switches in test, military, and telecom systems.

FAQ

What is the maximum analog signal voltage range supported by the MAX4623CSE+?

The MAX4623CSE+ supports rail-to-rail analog signal handling from V− to V+, meaning it passes signals spanning the full differential supply range. With ±15V supplies, this equals ±15V; with +12V single supply and GND, it handles 0V to +12V. Absolute maximum ratings limit V+ to +44V and V− to −44V relative to GND, but operational analog range remains bounded by actual supply voltages applied to V+ and V− pins.

Does the MAX4623CSE+ require external pull-up or pull-down resistors on its logic inputs?

No, the MAX4623CSE+ does not require external pull-up or pull-down resistors on IN1 or IN2. Its TTL/CMOS-compatible inputs have defined thresholds (VINL ≤ 0.8V, VINH ≥ 2.4V) and low input current (±0.5µA max), allowing direct connection to microcontroller GPIOs or FPGA outputs. Internal input structure ensures stable logic states without external biasing under normal operating conditions.

Can the MAX4623CSE+ operate with V+ = +5V and V− = GND?

Yes, the MAX4623CSE+ supports single-supply operation down to +4.5V, so +5V is fully compliant. When V− is tied to GND, the analog signal range becomes 0V to +5V. The device maintains specified R_ON (5Ω max), leakage (<5nA at +85°C), and switching speed (<250ns tON) under these conditions, as confirmed in the Single-Supply Electrical Characteristics table of the datasheet.

Is the MAX4623CSE+ pin-compatible with the DG405 analog switch?

Yes, the MAX4623CSE+ is explicitly documented as a pin-compatible replacement for the DG405. Both devices use the same 16-pin narrow SOIC footprint and identical pin functions-including IN1/IN2, COM1/COM2, NO1–NO4, V+, V−, GND, VL, and N.C. terminals-enabling direct PCB-level substitution without layout changes, provided supply and signal constraints align with MAX4623CSE+ specifications.

What is the thermal performance rating of the MAX4623CSE+ in its SOIC package?

The MAX4623CSE+ in 16-pin narrow SOIC has a maximum continuous power dissipation of 696mW at +70°C ambient, with a thermal derating factor of 8.70mW/°C above that temperature. This rating assumes standard JEDEC 2-layer board conditions; actual thermal performance depends on PCB copper area, airflow, and adjacent heat sources. No internal thermal shutdown circuitry is included-the device relies on proper system-level thermal design for reliability.