Analog Devices Inc./Maxim Integrated MAX4511CPE+

Overview

MAX4511CPE+ 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 operation from ±4.5V to ±18V dual supplies or +9V to +36V single supply. It is used in industrial process-control systems where overvoltage transients on sensor inputs must be contained without disrupting downstream circuitry.

For engineers reviewing the MAX4511CPE+ datasheet, MAX4511CPE+ pinout, MAX4511CPE+ application, or MAX4511CPE+ equivalent, key selection criteria include fault-protection voltage range (±36V with power applied), NC-only switching topology, 16-pin plastic DIP package compatibility with DG201/DG411 footprints, and guaranteed <0.5nA COM_ off-leakage at +25°C.

Technical Context

The MAX4511CPE+ employs parallel N- and P-channel FETs per switch channel to achieve low on-resistance while enabling true rail-to-rail analog signal passage. Its dual comparator-based fault-detection circuitry monitors NC/NO pins continuously against V+ and V−, disabling the analog path and activating booster FETs to clamp COM_ to the appropriate supply rail during overvoltage events.

Unlike traditional three-FET fault-protected switches, it delivers unambiguous rail-to-rail outputs at fault onset/termination and maintains protection with power removed (±40V). All four channels are independently controlled, TTL/CMOS-compatible, and require no power-supply sequencing.

Key Specifications

Pinout & Package

MAX4511CPE+ uses a 16-pin plastic DIP package (0.300" width) with through-hole mounting. Pin 12 is not connected (N.C.). Power pins (V+, V−, GND) and digital logic inputs (IN1–IN4) are segregated from analog terminals to minimize coupling.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4511CSE+, MAX4511CPE+ offers identical performance in a through-hole package for serviceability and thermal robustness; compared with ADG411BNZ, it adds ±36V fault resilience essential for industrial and avionics signal conditioning.

Availability

MAX4511CPE+ is available at Aetrix Electronics and suitable for industrial process-control systems, data acquisition front-ends, and avionics sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX4511CPE+ 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, automotive, and communications applications.

The MAX4511CPE+ belongs to Maxim's fault-protected analog switch family, designed specifically for ruggedized signal routing in environments where field-wiring transients, hot-plug events, or power sequencing faults threaten system reliability.

FAQ

What is the maximum fault voltage the MAX4511CPE+ can withstand on its NC pins?

The MAX4511CPE+ withstands up to ±36V on NC pins with power applied and ±40V with power removed. This is specified under Absolute Maximum Ratings and applies to NC1–NC4. COM and IN pins are not fault protected and must remain within V− to V+ to avoid ESD diode conduction and potential damage. The device guarantees this protection across its full operating temperature range (0°C to +70°C).

Is the MAX4511CPE+ pin-compatible with the DG201 series?

Yes, the MAX4511CPE+ is explicitly pin-compatible with the industry-standard DG201, DG202, and DG213 analog switches. Its 16-pin DIP layout matches DG201's pinout exactly, including identical placement of IN, COM, NC, V+, V−, GND, and N.C. terminals. However, unlike DG201, the MAX4511CPE+ provides fault protection only on NC/NO pins - COM and IN remain unprotected and require proper voltage limiting.

Does the MAX4511CPE+ support single-supply operation?

Yes, the MAX4511CPE+ operates from a single +9V to +36V supply by connecting V− to GND. In this configuration, the NC pins retain ±36V fault protection, and the device maintains rail-to-rail signal handling from 0V to V+. Logic inputs remain TTL/CMOS-compatible, and on-resistance increases slightly (e.g., 260Ω typ. at +12V) versus dual-supply operation - verified in the Electrical Characteristics table for single +12V conditions.

What is the on-resistance matching between channels in the MAX4511CPE+?

The MAX4511CPE+ guarantees on-resistance matching of ≤10Ω max between any two channels at ±15V (ΔR_ON). This tight matching ensures consistent gain and offset behavior across multiplexed channels in precision applications like automated test equipment. Matching is measured at V_COM = ±10V and I_COM = 1mA, and remains stable over temperature - critical for differential measurements and ratiometric sensor systems.

How does the MAX4511CPE+ behave during a fault condition?

During a fault (e.g., NC pin exceeds V+ by ~50mV), the affected switch isolates the NC terminal (nanoampere leakage), while the COM output is actively clamped to V+ or V− via internal booster FETs - delivering up to ±10mA to the load. This ensures rail-defined outputs without glitches. Recovery time is ~3.5µs (positive fault) or ~1.3µs (negative fault), dependent on COM output resistance and capacitance, and is independent of fault amplitude.