Analog Devices Inc./Maxim Integrated MAX4512ESE+T

Overview

MAX4512ESE+T from Maxim Integrated is a quad SPST analog switch with normally open (NO) configuration, fault-protected NC/NO terminals, ±36V fault tolerance with ±15V supplies, 175Ω max on-resistance, and rail-to-rail signal handling across ±4.5V to ±18V dual or +9V to +36V single supply. It serves in industrial data acquisition systems where overvoltage transients threaten signal integrity.

For engineers reviewing the MAX4512ESE+T datasheet, MAX4512ESE+T pinout, MAX4512ESE+T application, or MAX4512ESE+T equivalent, key selection criteria include fault-protection voltage limits, COM output current capability during fault (±10mA), on-resistance matching (≤10Ω), logic threshold compatibility (0.8V/2.4V), and SO-16 package thermal performance.

Technical Context

The MAX4512ESE+T uses parallel N- and P-channel FET architecture-unlike traditional triple-FET fault-protected switches-to achieve low on-resistance while enabling true rail-to-rail conduction. Its dual comparator circuitry monitors NO/NC pins continuously against V+ and V−, triggering automatic high-impedance isolation upon ±36V fault detection.

During fault conditions, internal "booster" FETs source or sink up to ±10mA from V+ or V− to the COM terminal, clamping output to the appropriate supply rail without transition glitches. Power-off fault protection extends to ±40V, and no supply sequencing is required for safe operation.

Key Specifications

Pinout & Package

MAX4512ESE+T is housed in a 16-pin narrow SO (SOIC-N) package, 150 mil width, with standard JEDEC MS-012AC footprint and 1.27mm pitch. Thermal resistance θ_JA = 8.70°C/W enables reliable operation at full rated load in industrial ambient conditions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4512ESE+, the MAX4512ESE+T offers verified MSL-1 tape-and-reel qualification for high-yield SMT assembly, while ADG467BRUZ trades 6V fault margin and 25Ω higher RON for 30% smaller footprint - making MAX4512ESE+T optimal for industrial reliability-critical deployments.

Availability

MAX4512ESE+T is available at Aetrix Electronics and suitable for industrial data acquisition, avionics signal routing, ATE equipment channel protection, and process-control loop monitoring requiring stable component supply across extended temperature ranges (−40°C to +85°C).

Supply support for MAX4512ESE+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) designs precision analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets, with emphasis on robustness and integration.

The MAX4511/MAX4512/MAX4513 family was engineered specifically for fault-critical analog signal routing in harsh environments - delivering rail-to-rail operation, ±36V fault immunity, and guaranteed off-state isolation without external protection components.

FAQ

What is the maximum fault voltage the MAX4512ESE+T can withstand with power applied?

The MAX4512ESE+T withstands ±36V on its NO1–NO4 terminals with power applied (V+ and V− active), as specified in the Absolute Maximum Ratings table. This applies to both positive and negative faults relative to GND, and is validated across the full −40°C to +85°C operating range. The device enters high-impedance isolation mode instantly upon fault detection, limiting leakage to nanoamperes.

Does the MAX4512ESE+T support single-supply operation, and what is the valid voltage range?

Yes, the MAX4512ESE+T supports single-supply operation with V− connected to GND and V+ ranging from +9V to +36V. At +12V supply, typical on-resistance is 260Ω, and logic thresholds remain compatible (V_{IN_H} = 2.4V, V_{IN_L} = 0.8V). The device maintains full fault protection (±36V on NO pins) and rail-to-rail signal handling across this entire range.

How does the MAX4512ESE+T behave during power-down, and is fault protection still active?

During power-down (V+ = V− = 0V), the MAX4512ESE+T retains ±40V fault protection on NO1–NO4 terminals. All switches default to OFF state, and NO pins become virtual open circuits drawing <10nA leakage. COM terminals remain non-fault-protected, so input signals must stay within 0V to V+ (i.e., GND to +36V) to avoid ESD diode conduction.

What is the COM terminal's output current capability during a fault condition?

During a fault, the MAX4512ESE+T's COM terminal can source up to +10mA from V+ (for positive faults) or sink up to −10mA to V− (for negative faults), maintaining rail-clamped output voltage. This is delivered via internal "booster" FETs and does not require external current-limiting components - enabling direct drive of moderate loads like op-amp inputs or comparator references.

Is the MAX4512ESE+T pin-compatible with legacy industry-standard switches?

Yes, the MAX4512ESE+T has identical pinout to DG201/DG202/DG213 and DG411/DG412/DG413, enabling drop-in replacement in existing PCB layouts. However, only NO/NC pins are fault-protected - COM and IN pins retain standard CMOS behavior and require adherence to absolute maximum ratings (e.g., COM voltage must not exceed V+ or fall below V−).