Analog Devices Inc./Maxim Integrated MAX4511CSE+T

Overview

MAX4511CSE+T from Maxim Integrated is a quad, normally closed (NC), fault-protected SPST analog switch with rail-to-rail signal handling, ±36V fault protection on NC/NO pins, 175Ω max on-resistance at ±15V, and TTL/CMOS-compatible logic inputs-designed for high-reliability signal routing in industrial data acquisition systems where overvoltage transients are common.

For engineers reviewing the MAX4511CSE+T datasheet, MAX4511CSE+T pinout, MAX4511CSE+T application, or MAX4511CSE+T equivalent, key selection criteria include fault-protection voltage range (±36V with power applied), rail-to-rail analog signal capability, 16-pin narrow SO package compatibility, and pin-for-pin replacement suitability for DG201/DG411-based designs requiring enhanced robustness.

Technical Context

The MAX4511CSE+T implements dual-FET parallel switching architecture (N- and P-channel) per channel to achieve low on-resistance and true rail-to-rail conduction. Its internal fault-detection comparators monitor NC/NO pins continuously, disabling signal paths and enabling booster FETs (capable of ±10mA output) during overvoltage events exceeding V± by ~50mV.

Unlike traditional triple-FET fault-protected switches, it maintains stable on-resistance across the full analog signal range (–14V to +14V at ±15V supplies) and delivers glitch-free rail clamping without transition artifacts. Power-off fault protection extends to ±40V, and no supply sequencing is required between V+ and V−.

Key Specifications

Pinout & Package

Package: 16-pin narrow SO (SOIC-N), 150 mil width, surface-mount, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4511ESE+, the MAX4511CSE+T offers identical performance at lower cost but reduced thermal operating range; compared with ADG411BRZ, it trades higher on-resistance for integrated fault resilience-enabling simplified BOMs and improved system-level reliability in harsh industrial settings.

Availability

MAX4511CSE+T is available at Aetrix Electronics and suitable for industrial data acquisition, avionics signal routing, and ATE equipment requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.

Supply support for MAX4511CSE+T 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 semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing applications.

The MAX4511 family was designed specifically for fault-tolerant analog signal switching in mission-critical instrumentation and control systems where reliability under electrical stress is non-negotiable.

FAQ

What is the maximum fault voltage the MAX4511CSE+T can withstand on its NC pins?

The MAX4511CSE+T withstands up to ±36V on NC/NO pins when powered (V+ and V− applied), and ±40V when completely unpowered. This is specified in the Absolute Maximum Ratings table and verified under fault conditions per Note 2. Exceeding these limits risks permanent damage, even for brief transients. The MAX4511CSE+T's internal comparators detect overvoltage and isolate the NC pin within nanoseconds.

Is the MAX4511CSE+T pin-compatible with the DG201 series?

Yes, the MAX4511CSE+T is explicitly pin-compatible with the industry-standard DG201/DG202/DG213 and DG411/DG412/DG413 families. Pin assignments for IN, COM, NC/NO, V+, V−, GND, and N.C. match exactly in the 16-pin SO package. However, only the NC/NO pins are fault-protected in the MAX4511CSE+T-COM and IN pins retain standard CMOS voltage limits and require adherence to V−–0.3V to V++0.3V.

Can the MAX4511CSE+T operate from a single +12V supply?

Yes, the MAX4511CSE+T supports single-supply operation from +9V to +36V. For +12V use, connect V− to GND. Electrical characteristics-including 525Ω max on-resistance, 0.5nA COM off-leakage, and 0.8V/2.4V logic thresholds-are fully specified and tested under +12V conditions. The device maintains rail-to-rail signal handling from 0V to +12V on NC/COM paths.

What is the on-resistance matching between channels in the MAX4511CSE+T?

The MAX4511CSE+T guarantees on-resistance matching of ≤10Ω max between any two channels at ±15V supplies (ΔRON = RON(MAX) − RON(MIN)). This tight matching ensures consistent gain and offset behavior across multiplexed channels in precision instrumentation. Matching is measured at +25°C and remains stable over temperature due to matched FET geometry in the monolithic die.

Does the MAX4511CSE+T require power-supply sequencing between V+ and V−?

No, the MAX4511CSE+T does not require power-supply sequencing. It operates safely with V+ and V− applied in any order, or with one supply ramped independently. This is enabled by independent internal bias networks and fault comparators that function regardless of relative supply timing. The "No Power-Supply Sequencing Required" feature is explicitly listed in the datasheet Features section and validated across the full operating temperature range.