Analog Devices Inc./Maxim Integrated MAX4523ESE+

Overview

The MAX4523ESE+ from Maxim Integrated is a quad, low-voltage, SPST analog switch IC with two normally open (NO) and two normally closed (NC) channels. It operates from ±2V to ±6V dual supplies or +2V to +12V single supply, delivers ≤100Ω on-resistance at ±5V, matches on-resistance within 4Ω max between channels, and handles rail-to-rail analog signals up to ±4.5V. It is used in audio signal routing and test equipment where bidirectional signal integrity and low leakage (<1nA @ +25°C) are critical.

For engineers reviewing the MAX4523ESE+ datasheet, MAX4523ESE+ pinout, MAX4523ESE+ application, or MAX4523ESE+ equivalent, this page provides verified electrical specifications, package-confirmed pin functions, real-world use scenarios for avionics and data acquisition, and two validated alternative parts with documented functional and application-level differences.

Technical Context

The MAX4523ESE+ integrates four independent CMOS SPST switches on a single die, with IN1–IN4 controlling COM1–COM4 paths. Switches 1 and 4 are NO; switches 2 and 3 are NC - enabling break-before-make operation (t_BBM = 5–20 ns) critical for preventing signal shorting during reconfiguration. Its logic inputs feature TTL/CMOS-compatible thresholds (V_{IN_L} = 0.8V, V_{IN_H} = 2.4V @ +5V supply), and internal level translators drive N- and P-channel MOSFETs with complementary gate signals referenced to V+ and V−.

ESD protection exceeds 2kV per Method 3015.7, and analog signal paths are isolated from GND - all leakage flows to V+ or V− via reverse-biased ESD diodes. The device supports high-frequency operation up to 50MHz (−3dB bandwidth), with off-isolation >−90dB at 100kHz and channel-to-channel crosstalk <−90dB under matched 50Ω conditions.

Key Specifications

Pinout & Package

MAX4523ESE+ is housed in a 16-pin narrow SO (SOIC-N) package (S16-2), 3.9mm × 9.9mm body, 1.27mm pitch, with gull-wing leads and no exposed pad.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4522ESE+, MAX4523ESE+ adds fail-safe NC functionality essential for power-on default routing; compared with ADG1412BRUZ, it trades higher voltage range for significantly lower leakage and superior channel matching in low-voltage, precision applications.

Availability

MAX4523ESE+ is available at Aetrix Electronics and suitable for audio signal routing, test equipment multiplexing, avionics signal conditioning, and data acquisition front-end designs requiring stable component supply across industrial and aerospace temperature grades.

Supply support for MAX4523ESE+ 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 MAX452x family was designed specifically for low-voltage, low-leakage, rail-to-rail analog switching in portable and precision instrumentation - emphasizing matching, speed, and supply flexibility over raw voltage rating.

FAQ

What is the maximum supply voltage range supported by the MAX4523ESE+?

The MAX4523ESE+ supports dual supplies from ±2V to ±6V (12V total) or a single supply from +2V to +12V. Absolute maximum ratings specify V+ to V− differential ≤13.0V - so ±6V supplies must account for tolerance to avoid exceeding this limit. Operation at +2.7V single supply is fully characterized, making MAX4523ESE+ viable for ultra-low-power battery systems.

Does the MAX4523ESE+ require external pull-up or pull-down resistors on its digital inputs?

No, the MAX4523ESE+ does not require external pull-up or pull-down resistors. Its IN1–IN4 inputs have defined TTL/CMOS-compatible thresholds (0.8V low, 2.4V high at +5V supply) and draw <1µA input current. Direct connection to microcontroller GPIOs or FPGA I/O banks is sufficient; adding external resistors may degrade noise immunity or increase power without benefit.

How does the break-before-make timing work in the MAX4523ESE+?

The MAX4523ESE+ implements break-before-make exclusively on its mixed NO/NC configuration: when IN1 or IN4 toggles, the corresponding NO path opens before the new state settles; when IN2 or IN3 toggles, the NC path breaks before reconnecting. Measured t_BBM is 5–20ns at +25°C with ±5.5V supplies - ensuring no overlap between old and new signal paths during switching, critical for avoiding shorts in powered analog buses.

Can the MAX4523ESE+ handle AC-coupled signals that swing below ground?

Yes - the MAX4523ESE+ supports true rail-to-rail analog signals referenced to V+ and V−, not GND. With V− = −5V and V+ = +5V, signals from −4.5V to +4.5V pass unattenuated. AC-coupled signals centered at 0V are fully supported as long as their peak excursions remain within (V− + 0.3V) to (V+ − 0.3V) to avoid forward-conducting internal ESD diodes. GND serves only as a digital reference.

Is the MAX4523ESE+ pin-compatible with the industry-standard DG213?

Yes, the MAX4523ESE+ is explicitly pin-compatible with the DG213 in SO, DIP, QSOP, and TSSOP packages. Pin functions match exactly: IN1–IN4, COM1–COM4, V+, V−, GND, and N.C. occupy identical positions. This allows direct replacement without PCB modification - though designers should verify timing (t_ON/t_OFF), leakage, and R_ON meet system requirements, as MAX4523ESE+ offers improved matching and lower leakage versus DG213.