Analog Devices Inc./Maxim Integrated MAX4623EPE

Overview

MAX4623EPE from Maxim Integrated is a dual, double-pole/single-throw (DPST), normally open analog switch IC designed for precision signal routing in high-reliability systems. It delivers 5Ω maximum on-resistance with ≤0.5Ω matching between channels, <5nA off-leakage at +85°C, and switching times of <250ns (turn-on) / <200ns (turn-off), enabling low-distortion audio and data-acquisition paths in test equipment and avionics.

For engineers reviewing the MAX4623EPE datasheet, MAX4623EPE pinout, MAX4623EPE application, or MAX4623EPE equivalent, key selection criteria include guaranteed break-before-make timing (in related MAX4622), rail-to-rail analog signal handling (±18V bipolar or +36V single supply), CMOS/TTL logic compatibility, and pin-for-pin replacement capability for DG405 in legacy designs.

Technical Context

The MAX4623EPE implements two independent SPST NO switches monolithically in a single 16-pin PDIP package, each controlled by separate digital inputs (IN1/IN2). Its internal architecture uses matched FET pairs to ensure tight R_ON tracking and flatness (∆R_ON ≤ 0.5Ω) across the full analog range (V− to V+).

It operates from bipolar supplies (±4.5V to ±18V) or single supplies (+4.5V to +36V), with logic-level translation via dedicated VL pin (2.7V to 5.5V), ensuring robust interface with microcontrollers and FPGA I/O while maintaining rail-to-rail analog signal integrity without clipping.

Key Specifications

Pinout & Package

MAX4623EPE is housed in a 16-pin plastic DIP (PDIP) package with 0.3-inch width, standard through-hole mounting, and JEDEC MS-001AC footprint. Pin spacing is 0.1 inch; thermal resistance θ_JA = 842mW at +70°C ambient.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4623CPE, the MAX4623EPE provides guaranteed −40°C to +85°C operation essential for avionics and outdoor test systems; versus ADG408BRZ, it offers superior R_ON matching and lower leakage but fewer channels-making it optimal for dual-path precision routing where thermal robustness and channel consistency are primary.

Availability

MAX4623EPE is available at Aetrix Electronics and suitable for reed relay replacement, avionics signal routing, and automated test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX4623EPE 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 and mixed-signal ICs for industrial, communications, and aerospace markets.

The MAX462x family was developed to deliver precision, high-speed analog switching with guaranteed matching and rail-to-rail operation-targeting applications where mechanical relays fail due to wear, speed, or size constraints.

FAQ

What is the maximum analog signal voltage range supported by the MAX4623EPE?

The MAX4623EPE supports rail-to-rail analog signals from V− to V+, enabling operation over ±4.5V to ±18V (bipolar) or +4.5V to +36V (single supply). This means it can handle input signals spanning the full supply rails-e.g., ±15V in dual-supply mode or 0V to +12V in single-supply configurations-without distortion or clipping, making MAX4623EPE ideal for precision instrumentation and industrial control interfaces.

Does the MAX4623EPE require a separate logic supply voltage?

Yes, the MAX4623EPE uses a dedicated VL pin (Pin 13) for logic-level referencing, supporting 2.7V to 5.5V. This decouples digital interface voltage from analog supply rails, allowing direct connection to 3.3V or 5V microcontrollers while maintaining full analog signal range (V− to V+). The VL pin must be externally supplied; leaving it unconnected will prevent proper logic recognition in MAX4623EPE operation.

Is the MAX4623EPE pin-compatible with the DG405 analog switch?

Yes, the MAX4623EPE is explicitly specified as a pin-compatible replacement for the DG405, sharing identical 16-pin PDIP pinout and terminal functions. This allows drop-in upgrades in existing designs-no PCB layout changes are needed-while delivering improved on-resistance (5Ω max vs. DG405's 45Ω), tighter matching (≤0.5Ω vs. unspecified), and enhanced leakage performance (<5nA at +85°C vs. DG405's ~100nA).

What is the guaranteed on-resistance matching specification for the MAX4623EPE?

The MAX4623EPE guarantees on-resistance matching of ≤0.5Ω maximum between its two independent switch channels (COM1/NO1 and COM2/NO2) across the full operating temperature range (−40°C to +85°C). This is measured as ∆R_ON = R_{ON_MAX} − R_{ON_MIN}, and is critical for applications like differential signal routing or ratiometric sensing where channel-to-channel gain consistency directly impacts measurement accuracy in MAX4623EPE-based systems.

Can the MAX4623EPE operate from a single +12V supply?

Yes, the MAX4623EPE fully supports single-supply operation from +4.5V to +36V. With V+ = +12V and V− tied to GND, it maintains rail-to-rail analog switching (0V to +12V), 5Ω max on-resistance, and <5nA off-leakage at +85°C. The VL pin should be set to +5V (or +3.3V) for TTL/CMOS compatibility, and logic inputs (IN1/IN2) referenced to GND. This configuration is widely used in portable test instruments and industrial PLC I/O modules leveraging MAX4623EPE.