Analog Devices Inc./Maxim Integrated MAX4623CPE

Overview

The MAX4623CPE 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 systems. It delivers 5Ω maximum on-resistance with ≤0.5Ω matching between channels, <200ns turn-off time, and rail-to-rail analog signal handling from ±4.5V to ±18V bipolar or +4.5V to +36V single supply - enabling high-fidelity audio-signal routing and reed-relay replacement in test equipment.

For engineers reviewing the MAX4623CPE datasheet, MAX4623CPE pinout, MAX4623CPE application, or MAX4623CPE equivalent, key selection criteria include guaranteed break-before-make timing (not applicable), channel-to-channel R_ON match tolerance, leakage performance at +85°C (<5nA), and compatibility with TTL/CMOS logic inputs across wide supply ranges.

Technical Context

The MAX4623CPE implements two independent SPST switches fabricated in a monolithic CMOS process, each with matched on-resistance and flat R_ON (≤0.5Ω variation over full signal range). Its internal architecture supports bidirectional analog signal flow and maintains CMOS/TTL logic compatibility via dedicated VL pin, decoupling logic threshold from analog supply rails.

It operates without internal charge pumps and relies on external supply sequencing (V+ first) to avoid latch-up. The device guarantees off-channel leakage <5nA at +85°C and exhibits 475pC typical charge injection - critical for data-acquisition systems requiring minimal signal corruption during switching.

Key Specifications

Pinout & Package

MAX4623CPE uses a 16-pin plastic DIP package (0.3-inch width) with through-hole mounting and standard JEDEC MO-001AC footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4623CSE, the MAX4623CPE offers identical analog performance in a through-hole package ideal for manual assembly and thermal cycling validation; versus ADG465BRZ, it provides true dual-channel correlation and lower high-temperature leakage - essential for precision instrumentation.

Availability

MAX4623CPE is available at Aetrix Electronics and suitable for audio-signal routing, test equipment multiplexing, and reed relay replacement requiring stable component supply across industrial temperature grades and long-lifecycle programs.

Supply support for MAX4623CPE 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 demanding applications.

The MAX462x family was engineered for precision analog switching in mission-critical systems - emphasizing low distortion, tight parameter matching, and robust operation across extended voltage and temperature ranges.

FAQ

What is the maximum analog signal voltage range supported by the MAX4623CPE?

The MAX4623CPE supports analog signals from V− to V+, meaning it handles rail-to-rail inputs. With bipolar supplies of ±18V, this yields a full −18V to +18V range; with single +36V supply and V− tied to GND, it supports 0V to +36V. This capability is confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables under "Input Voltage Range" and applies directly to the MAX4623CPE.

Does the MAX4623CPE require a separate logic supply voltage (VL), and why?

Yes, the MAX4623CPE requires a dedicated VL pin to set logic input thresholds independently of analog supplies. This allows interfacing with 3.3V or 5V microcontrollers even when V+ and V− operate at ±15V - a feature explicitly documented in the Pin Description and Electrical Characteristics sections. Omitting VL or tying it incorrectly disables proper logic recognition in the MAX4623CPE.

Is the MAX4623CPE pin-compatible with the DG405, and what does that mean for design reuse?

Yes, the MAX4623CPE is explicitly stated as a pin-compatible replacement for the DG405 in the General Description and Features sections. This means identical pin functions, numbering, and PCB footprint - allowing direct substitution without layout changes. All timing, leakage, and R_ON improvements of the MAX4623CPE apply within the same physical interface.

What is the guaranteed on-resistance matching between the two switches in the MAX4623CPE?

The MAX4623CPE guarantees on-resistance matching of ≤0.5Ω maximum between its two SPST channels, defined as R_{ON_MAX} − R_{ON_MIN}. This specification is tested and guaranteed over the full operating temperature range (0°C to +70°C for the C-grade MAX4623CPE) and appears in the Electrical Characteristics table under "∆RON".

Can the MAX4623CPE operate from a single 5V supply, and what are the limitations?

Yes, the MAX4623CPE supports single-supply operation down to +4.5V. However, with V− = GND and V+ = +5V, the analog signal range is limited to 0V to +5V, and R_ON rises to ~10Ω (per Single-Supply Electrical Characteristics table). For lowest R_ON and best flatness, ≥+12V single supply or ±5V bipolar is recommended - all verified in the MAX4623CPE datasheet's test conditions.