Analog Devices Inc./Maxim Integrated MAX8216CPD+

Overview

MAX8216CPD+ from Maxim Integrated is a precision 5-channel microprocessor voltage monitor IC designed for ±5V, ±15V supply rail supervision in embedded control and industrial systems. It integrates four dedicated comparators (±5V, ±15V) with ±1.5% trip accuracy, one auxiliary comparator with programmable over/undervoltage detection, an internal 1.24V reference (±1% initial accuracy), and open-drain outputs - all operating from a 2.7V–11V supply while consuming ≤250µA over temperature.

For engineers reviewing the MAX8216CPD+ datasheet, MAX8216CPD+ pinout, MAX8216CPD+ application, or MAX8216CPD+ equivalent, this device serves as a drop-in solution for dual-rail power sequencing, microprocessor reset generation with time delay, and fault-tolerant supply monitoring where ±15V rails require tight trip-point tolerance and built-in hysteresis eliminates external resistor networks.

Technical Context

The MAX8216CPD+ implements five independent comparators: four fixed-threshold channels for +5V, −5V, +15V, and −15V monitoring, plus a fifth uncommitted comparator (DIN/DOUT) whose noninverting input is externally accessible and inverting input tied to the internal 1.24V reference. All comparators feature on-chip hysteresis and open-drain outputs requiring external pull-ups.

Its internal reference delivers ±1% initial accuracy and <15ppm/°C tempco, enabling stable trip-point derivation across −40°C to +85°C. The auxiliary comparator supports programmable overvoltage/undervoltage detection via external resistor dividers, with hysteresis voltage fixed at 16mV (typ), and response time of 20µs under 30mV overdrive.

Key Specifications

Pinout & Package

MAX8216CPD+ is housed in a 14-pin plastic DIP (PDIP) package with 0.300-inch width, lead-free finish (+ suffix), and operating temperature range of 0°C to +70°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TL7705ACPSR and ADM6315-463YARTZ-RL, the MAX8216CPD+ uniquely delivers integrated ±5V/±15V monitoring, programmable auxiliary detection, and on-chip reference/hysteresis - making it irreplaceable in applications demanding coordinated multi-rail fault management without design compromises.

Availability

MAX8216CPD+ is available at Aetrix Electronics and suitable for industrial controllers, portable instruments, and data-acquisition systems requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for MAX8216CPD+ 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, automotive, and communications markets.

The MAX8215/MAX8216 product line was engineered specifically for robust, low-power microprocessor voltage monitoring in harsh industrial environments - emphasizing rail accuracy, built-in hysteresis, and seamless integration into multi-supply systems.

FAQ

What is the operating temperature range for MAX8216CPD+?

The MAX8216CPD+ is rated for 0°C to +70°C ambient operation. This commercial-grade temperature range aligns with its PDIP packaging and is validated per Maxim's ordering information table. The device maintains full electrical performance - including ±1.5% ±15V trip accuracy and ≤250µA supply current - across this entire span. For extended-range alternatives, consider MAX8216EPD (−40°C to +85°C) or MAX8216MPD (−55°C to +125°C).

Does MAX8216CPD+ support monitoring of both positive and negative supply rails?

Yes, MAX8216CPD+ directly monitors +5V, −5V, +15V, and −15V rails using its four dedicated comparators. Each input is internally configured for its respective rail polarity and trip point - for example, Pin 5 accepts +15V and triggers OUT3 when voltage falls below ~13.235V, while Pin 6 accepts −15V and triggers OUT4 when voltage rises above ~−13.235V. This eliminates external level-shifting circuitry required by generic comparators.

Can MAX8216CPD+ generate a time-delayed reset signal?

Yes, MAX8216CPD+ supports time-delayed reset generation using its auxiliary comparator (DIN/DOUT) in conjunction with external RC components. As shown in Figure 5 of the datasheet, connecting a 680kΩ resistor and 1µF capacitor to DIN creates a 200ms delay on DOUT release after the +5V rail recovers. This functionality is fully implemented within the MAX8216CPD+ architecture and does not require additional timers or microcontroller intervention.

What is the purpose of the PGND pin on MAX8216CPD+?

The PGND (Pin 8) on MAX8216CPD+ is the dedicated power-supply ground terminal, distinct from signal ground (GND, Pin 2). It must be used to bypass VDD (Pin 14) with a 0.1µF capacitor to suppress supply noise that could destabilize the internal 1.24V reference. Separating PGND from GND prevents ground-loop coupling and ensures accurate trip-point stability - especially critical in high-noise industrial settings where reference bounce would cause false fault assertions.

How does the auxiliary comparator (DIN/DOUT) differ from the four dedicated comparators in MAX8216CPD+?

The auxiliary comparator in MAX8216CPD+ differs fundamentally: its noninverting input (DIN, Pin 7) is externally accessible for custom voltage monitoring, while its inverting input is hardwired to the internal 1.24V reference. In contrast, the four dedicated comparators have fixed internal thresholds for ±5V/±15V. This makes the auxiliary comparator programmable for overvoltage/undervoltage detection at arbitrary voltages - e.g., monitoring a 3.3V LDO output - using only two external resistors, unlike the fixed-function dedicated channels.