Analog Devices Inc./Maxim Integrated MAX8215ESD+T

Overview

MAX8215ESD+T from Maxim Integrated is a precision quad +5V/–5V/+12V/–12V and auxiliary voltage monitor IC with five integrated comparators, open-drain outputs, on-chip 1.24V reference (±1% initial accuracy), built-in hysteresis, and 250µA max supply current over temperature. It operates from 2.7V to 11V and is used in microprocessor supervisory circuits for power-good signaling and reset generation in industrial controllers and data-acquisition systems.

For engineers reviewing the MAX8215ESD+T datasheet, MAX8215ESD+T pinout, MAX8215ESD+T application, or MAX8215ESD+T equivalent, this page delivers verified electrical specifications, package-confirmed pin functions, real-world monitoring use cases, and validated alternative parts - all grounded in Maxim's official documentation for the -40°C to +85°C extended-temperature SO-14 variant.

Technical Context

The MAX8215ESD+T integrates four dedicated comparators for fixed ±5V and ±12V supply monitoring plus one uncommitted auxiliary comparator with externally accessible noninverting input (DIN) and internal reference-connected inverting input. All comparators feature built-in hysteresis (±1.25% for +5V, ±1.5% for others) and open-drain outputs requiring external pull-ups.

Its internal 1.24V reference (±1% initial accuracy, ±15ppm/°C tempco) serves as the trip threshold anchor for all comparators. The device supports supply voltages from 2.7V to 11V and maintains valid output low down to 0.8V VDD - enabling direct monitoring of its own supply rail in undervoltage detection applications.

Key Specifications

Pinout & Package

MAX8215ESD+T is housed in a 14-pin plastic small-outline (SO) package per JEDEC MS-012, with 1.27mm pitch, body dimensions 8.65mm × 3.90mm × 1.75mm (max), and lead-free finish (indicated by '+' suffix).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX8215ESD+T, MAX8216ESD+T offers identical functionality but targets ±15V systems, while TL7705ACDR provides minimal 5V supervision at lower integration - making MAX8215ESD+T the only solution supporting simultaneous ±5V/±12V monitoring with programmable auxiliary detection.

Availability

MAX8215ESD+T is available at Aetrix Electronics and suitable for industrial controllers, data-acquisition systems, and portable instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX8215ESD+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 high-performance analog and mixed-signal ICs for power management, sensing, and interface applications in industrial, automotive, and communications markets.

The MAX8215ESD+T belongs to Maxim's microprocessor voltage monitor product line, engineered specifically for robust, multi-rail power supervision in noise-prone industrial environments with guaranteed operation from –40°C to +85°C.

FAQ

What is the operating temperature range for the MAX8215ESD+T?

The MAX8215ESD+T is rated for –40°C to +85°C operation, confirmed in the Ordering Information table and Absolute Maximum Ratings section. This extended temperature grade makes it suitable for industrial control cabinets and outdoor instrumentation where ambient conditions exceed commercial-grade limits. The 'E' suffix in MAX8215ESD+T explicitly denotes the –40°C to +85°C range, distinct from the 'C' (0°C to +70°C) and 'M' (–55°C to +125°C) variants.

Does the MAX8215ESD+T require external resistors for hysteresis?

No, the MAX8215ESD+T does not require external resistors for hysteresis. As stated in the Features and Detailed Description sections, all five comparators include built-in hysteresis - 16mV typical - eliminating the need for external feedback networks. This simplifies PCB layout, improves repeatability across units, and avoids drift associated with external resistor tolerances. The hysteresis is factory-trimmed and specified as ±1.25% for the +5V comparator and ±1.5% for the others.

Can the MAX8215ESD+T monitor its own VDD supply?

Yes, the MAX8215ESD+T can monitor its own VDD supply. Figure 4 and the "Monitoring the Supply Voltage" section confirm that the +5V comparator and auxiliary comparator (DIN) can jointly detect both undervoltage and overvoltage on the VDD rail. The device operates down to 0.8V VDD, ensuring valid output behavior even during deep brownout conditions. This capability enables self-supervision without additional components beyond the recommended 0.1µF bypass capacitor.

What is the purpose of the PGND pin on the MAX8215ESD+T?

The PGND (Pin 8) on the MAX8215ESD+T serves as the dedicated power-ground return path for VDD bypassing and internal reference stability. Unlike GND (Pin 2), which is the analog reference ground, PGND provides a low-inductance path for high-frequency supply currents. Maxim's Application Information stresses bypassing VDD to PGND with a 0.1µF capacitor to prevent reference "bounce" and false comparator outputs in noisy environments - a critical design requirement explicitly called out in the datasheet.

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

The auxiliary comparator (DIN/DOUT) differs fundamentally: its noninverting input (DIN) is brought out to a pin for external voltage programming, while its inverting input is permanently tied to the internal 1.24V reference. In contrast, the four dedicated comparators have fixed internal scaling ratios - e.g., +5V input maps to ~3.65× VREF - and no external access to their internal nodes. This makes the auxiliary comparator uniquely suited for custom trip points (e.g., 3.3V, 2.5V) via resistor dividers, whereas the dedicated comparators are optimized for standard supply rails.