Analog Devices Inc./Maxim Integrated MAX8215EPD+

Overview

MAX8215EPD+ from Maxim Integrated is a precision 5-channel voltage monitor IC designed for microprocessor supply supervision, featuring four dedicated comparators for +5V, −5V, +12V, and −12V rails plus one auxiliary comparator for programmable over/undervoltage detection. It delivers ±1.25% accuracy on the +5V channel, ±1.5% on ±12V channels, built-in hysteresis, 1.24V reference (±1% initial accuracy), and open-drain outputs - all in a 14-pin plastic DIP package rated for −40°C to +85°C operation.

For engineers reviewing the MAX8215EPD+ datasheet, MAX8215EPD+ pinout, MAX8215EPD+ application, or MAX8215EPD+ equivalent, this device serves as a drop-in solution for multi-rail power sequencing, reset generation with delay, and industrial-grade supply monitoring where rail-specific trip accuracy, low quiescent current (250µA max), and internal reference stability are critical selection criteria.

Technical Context

The MAX8215EPD+ integrates five independent comparators: four fixed-threshold channels (+5V, −5V, +12V, −12V) with factory-trimmed trip points referenced to an internal 1.24V bandgap, and one auxiliary comparator (DIN/DOUT) whose noninverting input is exposed for external resistor-programmable thresholds. All comparators feature built-in hysteresis (1.25–2.25% typical) and open-drain outputs requiring external pull-ups.

It operates across a wide 2.7V to 11V VDD range, maintains valid output states down to 0.8V supply, and includes PGND and GND separation for noise-sensitive applications. Input bias current is ≤10nA (TA = +25°C), and response time is 20µs with 30mV overdrive - enabling reliable detection of fast supply transients in embedded controllers and data-acquisition systems.

Key Specifications

Pinout & Package

MAX8215EPD+ uses a 14-pin plastic DIP (dual in-line package) with 0.300″ body width and 0.100″ lead pitch per JEDEC MS-001. Pin 1 is located at the left end of the top row when viewed from the top with the notch or dot oriented left.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX8216EPD+, the MAX8215EPD+ offers tighter trip accuracy for ±12V rails and matches legacy industrial designs; compared with TPS3808G33DBVR, it provides five independent monitoring channels, programmable thresholds, and guaranteed performance across extended temperature - making it irreplaceable in complex, multi-supply embedded systems.

Availability

MAX8215EPD+ is available at Aetrix Electronics and suitable for industrial controllers, portable instruments, and data-acquisition systems requiring stable component supply across −40°C to +85°C with guaranteed long-term availability and traceable sourcing.

Supply support for MAX8215EPD+ 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.

The MAX8215EPD+ belongs to Maxim's precision voltage monitor product line, engineered specifically for robust, multi-rail power supervision in mission-critical embedded systems where rail-specific accuracy, low power, and extended temperature operation are mandatory.

FAQ

What is the operating temperature range of the MAX8215EPD+?

The MAX8215EPD+ is specified for operation from −40°C to +85°C. This extended temperature grade makes it suitable for industrial control panels, outdoor instrumentation, and mobile radio applications where ambient conditions exceed commercial-grade limits. All electrical characteristics - including trip accuracy, supply current, and reference stability - are guaranteed across this full range.

Does the MAX8215EPD+ require external hysteresis components?

No, the MAX8215EPD+ does not require external hysteresis components. Each of its five comparators includes factory-trimmed internal hysteresis (1.25–2.25% typical), eliminating the need for external feedback resistors. This simplifies PCB layout, reduces BOM count, and ensures consistent noise immunity across all monitored rails without design iteration.

Can the MAX8215EPD+ monitor its own VDD supply?

Yes, the MAX8215EPD+ can monitor its own VDD supply. The +5V comparator can be used for undervoltage detection on VDD when VDD ≥ 4.5V, and the auxiliary comparator (DIN/DOUT) can be configured with external resistors to detect overvoltage or lower undervoltage thresholds - enabling complete self-supervision with no additional ICs.

What is the function of the PGND pin on the MAX8215EPD+?

The PGND (power ground) pin on the MAX8215EPD+ serves as the dedicated return path for the VDD supply and the 0.1µF bypass capacitor. It must be connected to system power ground and kept separate from signal ground (GND) to minimize noise coupling into the reference and comparator inputs - a key requirement for stable operation in noisy industrial environments.

How do the open-drain outputs of the MAX8215EPD+ interface with microcontroller GPIOs?

The open-drain outputs of the MAX8215EPD+ interface directly with microcontroller GPIOs configured as interrupt inputs. Each output requires a pull-up resistor (≥2.7kΩ to VDD or another logic rail); the resulting active-low signal asserts when its monitored rail falls outside tolerance. Multiple outputs can be wire-OR'd to a single MCU interrupt line for consolidated fault reporting.