Analog Devices Inc./Maxim Integrated MAX8216ESD+

Overview

MAX8216ESD+ from Maxim Integrated is a precision quad-supply voltage monitor IC with five integrated comparators - four dedicated to ±5V and ±15V rails, and one auxiliary comparator for programmable over/undervoltage detection. It features on-chip 1.24V reference (±1% initial accuracy), built-in hysteresis, open-drain outputs, and operates from 2.7V to 11V supply. Designed for microprocessor reset and power-rail supervision in industrial controllers and portable instruments.

For engineers reviewing the MAX8216ESD+ datasheet, MAX8216ESD+ pinout, MAX8216ESD+ application, or MAX8216ESD+ equivalent, key selection criteria include ±15V trip accuracy (±1.5%), 250µA max supply current over temperature, -40°C to +85°C extended temperature grade, and SO-14 package compatibility with lead-free assembly.

Technical Context

The MAX8216ESD+ implements five independent comparators: four fixed-threshold comparators for +5V, -5V, +15V, and -15V monitoring, plus one auxiliary comparator with externally accessible noninverting input (DIN) referenced to the internal 1.24V bandgap. All comparators use internal hysteresis (1.25–2.25% typical) and deliver open-drain outputs requiring external pull-ups.

Its reference circuit delivers ±1% initial accuracy and <15 ppm/°C tempco; supply current remains ≤250µA across -40°C to +85°C. Input tolerance supports ±50V on ±15V/-5V pins and +20V/-0.3V on +5V pin, enabling robust operation in noisy industrial environments without external protection.

Key Specifications

Pinout & Package

MAX8216ESD+ is housed in a 14-pin SO (Small Outline) package, RoHS-compliant and lead-free (indicated by '+' suffix), with 1.27mm pitch and JEDEC MS-012AC footprint. Thermal performance supports 667mW continuous dissipation at +70°C (derated 8.33mW/°C above).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TL7705ACDR and ADM6315-46ARTZ-RL7, the MAX8216ESD+ uniquely integrates five comparators with ±15V capability, a programmable auxiliary channel, and a buffered 1.24V reference - enabling consolidated multi-rail supervision in a single SO-14 package where discrete solutions would require ≥3 ICs and external passives.

Availability

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

Supply support for MAX8216ESD+ 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 fabless semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing markets.

The MAX8215/MAX8216 product line was designed specifically for precision multi-rail voltage monitoring in microprocessor-based systems, emphasizing accuracy, integration, and robustness in harsh electrical environments.

FAQ

What is the operating temperature range for MAX8216ESD+?

The MAX8216ESD+ is rated for -40°C to +85°C operation, confirmed by its 'E' grade designation in the ordering information. 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 MAX8216ESD+ support monitoring of both positive and negative supply rails?

Yes, MAX8216ESD+ directly supports monitoring of +5V, -5V, +15V, and -15V rails using its four dedicated comparators. The -5V, +15V, and -15V inputs are explicitly characterized in the Electrical Characteristics table with ±1.5% accuracy. Input voltage ratings extend to ±50V on negative rails and +20V on +5V, allowing safe operation even during transient overvoltage events without external clamping.

How is the auxiliary comparator (DIN/DOUT) used in MAX8216ESD+?

The auxiliary comparator in MAX8216ESD+ uses DIN as its noninverting input (internally referenced to the 1.24V VREF), enabling programmable overvoltage or undervoltage detection via external resistor dividers. Its DOUT output is open-drain and can generate reset signals, fault flags, or time-delayed responses - as demonstrated in Figures 4–7 of the datasheet. Unlike the four dedicated comparators, it offers full flexibility for custom trip points outside the standard ±5V/±15V set.

What package type and lead finish does MAX8216ESD+ use?

MAX8216ESD+ is supplied in a 14-pin SO (Small Outline) package with lead-free (RoHS-compliant) finish, indicated by the '+' suffix per Maxim's ordering convention. The package conforms to JEDEC MS-012AC dimensions (3.90mm × 8.65mm body, 1.27mm pitch) and supports reflow soldering per J-STD-020. It replaces the leaded MAX8216ESD variant while maintaining identical pinout and thermal characteristics.

Can MAX8216ESD+ operate from a 3.3V supply?

Yes, MAX8216ESD+ operates from 2.7V to 11V, fully supporting 3.3V system rails. Its comparators function correctly down to 2.7V supply, and the 1.24V reference remains stable with ±1% initial accuracy. The open-drain outputs can sink current at VDD = 3.3V (VOL ≤ 0.3V at 2mA), making it suitable for interfacing with 3.3V logic families without level shifters - a key advantage over older 5V-only supervisors.