Analog Devices Inc./Maxim Integrated MAX8216ESD+T

Overview

MAX8216ESD+T from Maxim Integrated is a precision quad-dedicated +5V/−5V/+15V/−15V and auxiliary voltage monitor IC with five comparators, open-drain outputs, internal 1.24V reference (±1% initial accuracy), built-in hysteresis, and 250µA max supply current over temperature. It targets microprocessor supervisory functions in industrial controllers and portable instruments requiring ±15V rail monitoring.

For engineers reviewing the MAX8216ESD+T datasheet, MAX8216ESD+T pinout, MAX8216ESD+T application, or MAX8216ESD+T equivalent, key selection considerations include its −40°C to +85°C operating range, SO-14 package, ±1.5% trip accuracy on ±15V inputs, and auxiliary comparator programmability for overvoltage/undervoltage detection with hysteresis.

Technical Context

The MAX8216ESD+T integrates four dedicated comparators-each hardwired to monitor +5V, −5V, +15V, and −15V-with trip thresholds referenced to an internal 1.24V bandgap reference. Its fifth comparator (DIN/DOUT) features externally accessible noninverting input and internal reference-connected inverting input, enabling user-defined threshold detection.

All comparators deliver open-drain outputs requiring external pull-ups, support operation down to 0.8V VDD, and incorporate factory-trimmed hysteresis (1.25–2.25% typical) to suppress noise-induced oscillation. The device operates across a 2.7V to 11V supply range and consumes ≤250µA over full temperature.

Key Specifications

Pinout & Package

MAX8216ESD+T is housed in a 14-pin SO (Small Outline) package per JEDEC MS-012, with 1.27mm pitch, body size 8.65mm × 3.90mm, and lead finish NiPdAu. Pin 1 is marked by beveled corner or dot; pin count and orientation follow standard SO-14 conventions.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage monitor applications.

Compared with TLV809E33DBZR and ADM6315-46ARTZ-RL7, the MAX8216ESD+T uniquely delivers simultaneous ±5V/±15V monitoring, a programmable auxiliary comparator, and a precision 1.24V reference-making it irreplaceable in applications requiring coordinated multi-rail supervision and custom fault detection.

Availability

MAX8216ESD+T is available at Aetrix Electronics and suitable for industrial controllers, portable instruments, and mobile radios requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX8216ESD+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 and mixed-signal ICs for industrial, automotive, and communications markets, emphasizing high reliability, low power, and integration.

The MAX8216ESD+T belongs to Maxim's microprocessor supervisory product line, engineered specifically for robust, multi-rail voltage monitoring in harsh environments where rail accuracy, hysteresis stability, and extended temperature operation are critical.

FAQ

What is the operating temperature range of the MAX8216ESD+T?

The MAX8216ESD+T is rated for −40°C to +85°C operation, matching the "E" grade designation in its part number. This extended industrial temperature range ensures reliable performance in demanding environments such as factory automation equipment and outdoor portable instrumentation where ambient temperatures fluctuate widely. The device maintains specified trip accuracy and supply current limits across this full range.

Does the MAX8216ESD+T support monitoring of both positive and negative supply rails?

Yes, the MAX8216ESD+T directly monitors +5V, −5V, +15V, and −15V rails using its four dedicated comparators. Each input is optimized for its respective rail: +5V and −5V inputs achieve ±1.25% and ±1.5% trip accuracy respectively, while ±15V inputs are calibrated to ±1.5% accuracy. This makes the MAX8216ESD+T ideal for bipolar analog systems like data acquisition front-ends and RF power amplifiers.

Can the MAX8216ESD+T monitor its own VDD supply?

Yes-the MAX8216ESD+T can supervise its own VDD supply using the +5V comparator and auxiliary comparator in combination. As shown in Figure 4 of the datasheet, a resistor divider on DIN allows overvoltage detection, while the +5V comparator detects undervoltage. The device operates down to 0.8V VDD, enabling supervision even during deep brownout conditions without external biasing.

What is the purpose of the VREF pin on the MAX8216ESD+T?

The VREF pin outputs the internal 1.24V bandgap reference with ±1% initial accuracy and low temperature drift (<15ppm/°C). It serves dual roles: (1) as the reference for all comparator thresholds, and (2) as a stable external reference source-usable up to 300µA sink-for biasing external circuitry such as ADC references or sensor excitation. No external components are needed to use VREF.

How does the auxiliary comparator (DIN/DOUT) differ from the four dedicated comparators in the MAX8216ESD+T?

The auxiliary comparator differs fundamentally: its noninverting input (DIN) is brought out to a pin, while its inverting input is permanently tied to the internal 1.24V reference. This enables user-programmable trip points via external resistor dividers-unlike the fixed +5V/−5V/+15V/−15V inputs. It also supports overvoltage/undervoltage detection with built-in hysteresis, making the MAX8216ESD+T adaptable to custom voltage thresholds beyond its dedicated rails.