Analog Devices Inc./Maxim Integrated MAX16074RS15D3+T

Overview

MAX16074RS15D3+T from Maxim Integrated is an ultra-low-power, open-drain active-low microprocessor supervisory circuit in a 1mm × 1mm UCSP package, featuring 1.58V factory-trimmed reset threshold (±2.5% over temperature), 140ms reset timeout, 0.7μA supply current at 1.8V, and guaranteed reset assertion down to VCC = 1.0V - used for reliable power-on reset and brownout detection in space-constrained portable electronics.

For engineers reviewing the MAX16074RS15D3+T datasheet, MAX16074RS15D3+T pinout, MAX16074RS15D3+T application, or MAX16074RS15D3+T equivalent, key selection criteria include open-drain reset compatibility with bidirectional µP reset pins, immunity to sub-100ns VCC transients, manual reset input with internal 50kΩ pullup, and operation across 1.2V–5.5V supply range with minimal quiescent current.

Technical Context

The MAX16074RS15D3+T implements a precision band-gap reference and comparator with internally trimmed resistors to set a fixed 1.58V detection threshold, with hysteresis of 6.3mV and tempco of 40ppm/°C. Its open-drain RESET output supports wired-OR configurations and interfaces directly with µPs having bidirectional reset pins using a single external pullup resistor.

It features dual-trigger reset assertion: via VCC falling below 1.58V (with 20µs propagation delay) or via active-low MR input (with 1–2µs tOFF delay). Reset remains active for 140ms after VCC rises above threshold or MR returns high, and the device ignores transients <100ns at typical overdrive levels.

Key Specifications

Pinout & Package

MAX16074RS15D3+T uses a 4-bump, 1mm × 1mm UCSP™ chip-scale package (outline R41C1-1) with bottom-side bumps and no leads. The package is RoHS-compliant (denoted by '+' suffix) and rated for reflow up to +260°C.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microprocessor supervisory applications.

Compared with MAX16074RS15D3+T, TPS3123E15DBVR offers higher drive strength but sacrifices MR integration and miniaturization, while ADM6806-15ARTZ-R7 matches footprint and function but demands careful pin mapping validation to avoid misconnection.

Availability

MAX16074RS15D3+T is available at Aetrix Electronics and suitable for portable medical sensors, wearable fitness trackers, digital point-of-care diagnostics, smart hearing aids, and battery-powered IoT edge nodes requiring stable component supply with long-term lifecycle support.

Supply support for MAX16074RS15D3+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 precision analog, mixed-signal, and power management ICs for demanding industrial, medical, and communications applications.

The MAX1607x family targets ultra-low-power, space-constrained embedded systems requiring reliable, calibration-free power supervision - especially where battery longevity and PCB real estate are critical constraints.

FAQ

What is the exact reset threshold voltage of MAX16074RS15D3+T and how is it trimmed?

The MAX16074RS15D3+T has a factory-trimmed reset threshold of 1.58V (typical at +25°C), with tolerance of ±2.5% over the full -40°C to +85°C operating range. This value is set by laser-trimming internal resistors during wafer test, eliminating the need for external components or post-assembly calibration. The '15' in the part number directly references Table 1's 1.58V threshold option.

Does MAX16074RS15D3+T support manual reset, and what is the MR input behavior?

Yes, MAX16074RS15D3+T includes an active-low manual reset input (MR) with an internal 50kΩ pullup to VCC. Driving MR low asserts RESET immediately; RESET remains low for the full 140ms timeout after MR returns high. MR accepts TTL/CMOS logic levels and may be left unconnected if unused - no external pullup is required.

What is the maximum VCC supply voltage the MAX16074RS15D3+T can tolerate, and what happens below 1.2V?

MAX16074RS15D3+T operates from 1.2V to 5.5V per specification, but its RESET output is guaranteed functional down to VCC = 1.0V. Below 1.2V, the device remains powered and continues asserting RESET (in open-drain low state) until VCC drops below absolute minimum ratings (-0.3V), ensuring fail-safe behavior during deep brownout conditions.

How does the open-drain RESET output of MAX16074RS15D3+T differ from push-pull versions like MAX16072?

The open-drain RESET output of MAX16074RS15D3+T requires an external pullup resistor and enables wired-OR connectivity with other reset sources (e.g., watchdog timers or other supervisors) on a shared reset bus. Unlike push-pull outputs, it avoids contention and supports bidirectional µP reset pins - a key advantage in complex SoC systems where multiple devices control reset timing.

Is MAX16074RS15D3+T RoHS-compliant and what does the '+' suffix indicate?

Yes, MAX16074RS15D3+T is RoHS-compliant and lead(Pb)-free, as confirmed by the '+' suffix in the part number per Maxim Integrated's packaging nomenclature. The '+' denotes compliance with EU RoHS Directive 2011/65/EU and related restrictions on hazardous substances, verified through material declarations and manufacturing process controls.