Analog Devices Inc./Maxim Integrated MAX4512CSE+

Overview

The MAX4512CSE+ from Maxim Integrated is a quad, single-pole/single-throw (SPST), normally open analog switch with rail-to-rail signal handling and ±36V fault protection on NO_ terminals. It operates from ±4.5V to ±18V dual supplies or +9V to +36V single supply, features 175Ω max on-resistance, 0.5nA off-leakage at +25°C, and TTL/CMOS-compatible logic inputs-used in industrial data acquisition systems requiring robust signal routing under overvoltage transients.

For engineers reviewing the MAX4512CSE+ datasheet, MAX4512CSE+ pinout, MAX4512CSE+ application, or MAX4512CSE+ equivalent, key selection criteria include fault-protected NO_ terminal voltage range, rail-to-rail analog path capability, on-resistance matching across channels, power-supply sequencing independence, and compatibility with legacy DG201/DG202 footprints in high-reliability ATE and avionics signal paths.

Technical Context

The MAX4512CSE+ implements dual-FET parallel switching architecture (N-channel + P-channel) per channel, enabling low on-resistance while maintaining rail-to-rail conduction. Fault detection uses dedicated comparators monitoring NO_ against V+ and V−; during overvoltage (>V+ +50mV or

It supports true bidirectional analog signal flow with no power-supply sequencing requirement. The COM_ pins are not fault-protected-signals applied there must remain within V− to V+-while NO_ pins tolerate ±36V faults with power applied and ±40V with power removed, ensuring fail-safe operation during power-up/down or field transients.

Key Specifications

Pinout & Package

MAX4512CSE+ is housed in a 16-pin narrow SO (SOIC-N) package, 3.9mm wide, with standard 1.27mm pitch. Pin 1 is marked by a beveled corner or dot; pin 12 is N.C. (not connected). All pins are surface-mount compatible with JEDEC MS-012AC footprint.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4512ESE+, the MAX4512CSE+ trades extended temperature capability for lower cost in commercial applications, while compared with ADG451BRZ, it adds integrated ±36V fault protection at the expense of slightly higher on-resistance-making it the preferred choice for reliability-critical signal routing where transient immunity is non-negotiable.

Availability

MAX4512CSE+ is available at Aetrix Electronics and suitable for ATE equipment, industrial data acquisition, avionics signal routing, and redundant backup systems requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for MAX4512CSE+ 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 and mixed-signal ICs for demanding industrial, automotive, and communications applications, emphasizing integration, reliability, and power efficiency.

The MAX4511/MAX4512/MAX4513 family was engineered specifically for fault-tolerant analog signal routing in test, measurement, and safety-critical systems-delivering rail-to-rail performance with integrated ±36V protection without external components.

FAQ

What is the maximum fault voltage the MAX4512CSE+ can withstand on its NO_ pins?

The MAX4512CSE+ supports ±36V fault protection on NO_ pins with power applied (V+ and V− active), and ±40V with power removed. This rating applies only to NO_ (or NC_) terminals; COM_ and IN_ pins are not fault-protected and must remain within V− to V+ to prevent ESD diode conduction and potential damage. Exceeding these limits risks permanent device failure.

Can the MAX4512CSE+ operate from a single +12V supply?

Yes, the MAX4512CSE+ operates from a single +9V to +36V supply by connecting V− to GND. At +12V, typical on-resistance is 260Ω, off-leakage remains ≤0.5nA at +25°C, and logic thresholds stay within TTL/CMOS-compatible range (+0.8V low, +2.4V high). No level shifters or auxiliary supplies are needed, simplifying power architecture in compact systems.

Is the MAX4512CSE+ pin-compatible with the DG201 series?

Yes, the MAX4512CSE+ has identical pinout and footprint to the DG201/DG202/DG213 series, enabling drop-in replacement in existing PCBs. However, only the NO_ (or NC_) pins are fault-protected-COM_ and IN_ retain standard CMOS behavior. System validation must confirm that fault protection coverage aligns with signal routing topology and that COM_ voltages never exceed V− to V+.

What happens to the MAX4512CSE+ outputs during power-down?

When V+ and V− are removed, all MAX4512CSE+ switches turn off automatically, and NO_ terminals become virtual open circuits with nanoampere leakage-even under ±40V fault conditions. COM_ outputs float but remain isolated; no current flows into or out of COM_ pins. This behavior ensures safe, glitch-free power sequencing and prevents backfeeding in multi-board systems.

Does the MAX4512CSE+ support bidirectional analog signal flow?

Yes, the MAX4512CSE+ supports fully bidirectional signal routing between NO_ and COM_ terminals due to its parallel N-channel/P-channel FET structure. Signal direction is irrelevant to on-resistance, leakage, or bandwidth performance-enabling flexible use as either input selector or output distributor in analog matrix configurations without signal degradation.