Analog Devices Inc./Maxim Integrated MAX8216CSD+

Overview

MAX8216CSD+ from Maxim Integrated is a precision quad-supply voltage monitor IC with one auxiliary comparator, designed to supervise ±5V and ±15V rails in microprocessor-based systems. It features on-chip 1.24V reference (±1% initial accuracy), built-in hysteresis, open-drain outputs, and consumes ≤250µA over temperature. Used for power-good signaling and reset generation in industrial controllers and portable instruments.

For engineers reviewing the MAX8216CSD+ datasheet, MAX8216CSD+ pinout, MAX8216CSD+ application, or MAX8216CSD+ equivalent, key selection criteria include ±15V trip accuracy (±1.5%), auxiliary comparator programmability for over/undervoltage detection, SO-14 package compatibility, and operation down to 2.7V supply voltage.

Technical Context

The MAX8216CSD+ integrates five independent comparators: four dedicated to fixed thresholds (+5V, −5V, +15V, −15V) and one uncommitted auxiliary comparator with external noninverting input (DIN) referenced to the internal 1.24V bandgap. All outputs are open-drain, requiring external pull-ups for logic-level translation or wire-OR functionality.

Its internal hysteresis eliminates external feedback components, with typical hysteresis of 16mV and ±1.5% trip accuracy for ±15V inputs. The device operates across 2.7V–11V supply range and maintains valid output states down to VDD = 0.8V - enabling self-monitoring of its own supply rail in undervoltage scenarios.

Key Specifications

Pinout & Package

MAX8216CSD+ is housed in a 14-pin SO (Small Outline) package per JEDEC MS-012, with 1.27mm pitch, body size 8.75mm × 3.90mm, and lead-free finish indicated by the '+' suffix.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TL7705ACDR and ADM6315-33D3ARTZ-RL, the MAX8216CSD+ uniquely delivers simultaneous ±5V/±15V supervision with programmable auxiliary detection and a precision reference - making it irreplaceable in mixed-signal industrial equipment requiring comprehensive power integrity assurance.

Availability

MAX8216CSD+ is available at Aetrix Electronics and suitable for industrial controllers, portable instruments, and medical signal conditioning systems requiring stable component supply and long-term manufacturability.

Supply support for MAX8216CSD+ 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, automotive, and communications markets.

The MAX8216 belongs to Maxim's precision voltage monitor product line, engineered specifically for robust, multi-rail power supervision in noise-prone industrial and portable environments where reliability and accuracy are non-negotiable.

FAQ

What is the exact ±15V trip voltage tolerance for MAX8216CSD+ over temperature?

The MAX8216CSD+ exhibits a +15V trip level ranging from 12.904V to 13.566V and a −15V trip level from −12.904V to −13.566V across its full operating temperature range (0°C to +70°C for the 'C' grade). This ±1.5% accuracy specification applies to both rails and is confirmed in the Electrical Characteristics table under "+15V Trip Level" and "−15V Trip Level" parameters.

Can MAX8216CSD+ monitor its own VDD supply?

Yes, the MAX8216CSD+ can monitor its own VDD supply using the +5V comparator and auxiliary comparator in combination. As documented in Figure 4 and the "Monitoring the Supply Voltage" section, the +5V input monitors undervoltage while DIN/DOUT detects overvoltage - and the device functions correctly down to VDD = 0.8V, enabling self-supervision in brownout scenarios.

Does MAX8216CSD+ require external hysteresis components?

No, the MAX8216CSD+ does not require external hysteresis components. Its five comparators feature built-in hysteresis - typically 16mV - which eliminates oscillation near trip points and removes the need for external positive feedback resistors, simplifying PCB layout and improving noise immunity in industrial environments.

What is the purpose of the separate PGND and GND pins on MAX8216CSD+?

The MAX8216CSD+ separates PGND (Pin 8) and GND (Pin 2) to isolate power-ground return paths from signal-reference grounds. PGND serves exclusively as the return for the VDD bypass capacitor, minimizing switching noise injection into the sensitive comparator input and reference circuitry referenced to GND - a critical layout practice for maintaining ±1.5% trip accuracy.

Is the VREF output on MAX8216CSD+ buffered and load-capable?

Yes, the VREF pin (Pin 1) on MAX8216CSD+ provides a buffered 1.24V reference with ±1% initial accuracy and load regulation of ≤3.3µV/µA. It can source up to 40µA while maintaining stability, making it suitable for driving external ADC references or resistor-divider networks for the auxiliary comparator without requiring additional buffering.