Analog Devices Inc./Maxim Integrated MAX16074RS17D2+T

Overview

MAX16074RS17D2+T from Maxim Integrated is an ultra-low-power microprocessor supervisory circuit with open-drain active-low reset output, 1.67V factory-trimmed reset threshold (±2.5% over temperature), 34ms reset timeout, 0.7µA supply current at 1.8V, and guaranteed reset assertion down to VCC = 1.0V - used in battery-powered portable electronics for reliable power-on reset and brownout detection.

For engineers reviewing the MAX16074RS17D2+T datasheet, MAX16074RS17D2+T pinout, MAX16074RS17D2+T application, or MAX16074RS17D2+T equivalent, key selection criteria include open-drain reset compatibility with bidirectional µP reset pins, nanoscale 1mm × 1mm UCSP packaging, immunity to sub-100ns VCC transients, and manual reset input with internal 50kΩ pullup.

Technical Context

The MAX16074RS17D2+T implements a precision band-gap reference and comparator with internally trimmed resistors to set its 1.67V reset threshold, featuring ±2.5% accuracy across –40°C to +85°C and 40ppm/°C tempco. Its open-drain RESET output interfaces directly with µPs having bidirectional reset pins using a single external pullup resistor.

It incorporates glitch rejection on MR (100ns) and VCC (transient immunity up to 45µs at 100mV overdrive), with propagation delays of 1–2µs (MR→RESET) and 20–90µs (VCC→RESET), and guarantees valid reset operation even as VCC falls to 1.0V - critical for deep-brownout recovery in low-voltage systems.

Key Specifications

Pinout & Package

MAX16074RS17D2+T is housed in a 1mm × 1mm, 4-bump chip-scale package (UCSP™) with bottom-side bumps, optimized for ultra-dense portable PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6369HXR29+T and TPS3123E16DBVR, the MAX16074RS17D2+T delivers the smallest form factor (1mm²), lowest quiescent current (0.7µA), and optimal reset timing (34ms) for space-constrained, battery-critical applications - while its open-drain output uniquely supports bidirectional reset bus sharing without added components.

Availability

MAX16074RS17D2+T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, cell phones, and digital cameras requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for MAX16074RS17D2+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.

The MAX1607x family targets ultra-low-power, space-constrained portable electronics - delivering nano-power supervision with factory-trimmed thresholds and chip-scale packaging to eliminate external components and reduce system-level design complexity.

FAQ

What is the reset threshold voltage of the MAX16074RS17D2+T and how accurate is it over temperature?

The MAX16074RS17D2+T has a factory-trimmed reset threshold of 1.67V at +25°C, with ±2.5% accuracy over the full –40°C to +85°C operating range. This specification is guaranteed by design and verified per Maxim's production test flow. The device uses a precision band-gap reference and internally trimmed resistors to achieve this stability without external calibration. The MAX16074RS17D2+T maintains this accuracy across temperature due to its 40ppm/°C tempco and built-in hysteresis of 6.3mV.

Does the MAX16074RS17D2+T require an external pullup resistor on its RESET pin?

Yes, the MAX16074RS17D2+T features an open-drain active-low RESET output and requires an external pullup resistor to VCC or another appropriate rail to establish a defined high state when reset is inactive. Typical values range from 10kΩ to 100kΩ depending on bus capacitance and rise-time requirements. The MAX16074RS17D2+T does not include an internal pullup on RESET - only on the MR input (50kΩ). This open-drain architecture enables wired-OR configurations with other reset sources.

What is the function of the MR pin on the MAX16074RS17D2+T and can it be left unconnected?

MR is an active-low manual reset input that forces the MAX16074RS17D2+T to assert RESET when pulled low. It includes an internal 50kΩ pullup resistor to VCC, so it may be left unconnected if manual reset functionality is not required. When used, a normally open momentary switch from MR to GND provides reset initiation without external debouncing. The MAX16074RS17D2+T specifies MR minimum pulse width of 0.8µs and glitch rejection of 100ns, making it robust against contact bounce and EMI.

What reset timeout period is implemented in the MAX16074RS17D2+T and how is it selected?

The MAX16074RS17D2+T implements a 34ms typical reset timeout period, indicated by the "D2" suffix in its part number. This value is factory-programmed and corresponds to the middle option among four available timeouts: 20µs (D0), 8ms (D1), 34ms (D2), and 140ms (D3). The timeout begins after VCC rises above the reset threshold and MR goes high, holding RESET low for the full duration to ensure reliable µP initialization. No external components are needed to set or adjust this timing.

Is the MAX16074RS17D2+T compatible with systems operating below 1.8V, and what is its minimum functional VCC?

Yes, the MAX16074RS17D2+T operates down to VCC = 1.2V over temperature and guarantees valid reset assertion down to VCC = 1.0V - critical for detecting brownout in deeply discharged battery systems. While its specified monitoring range covers nominal 1.8V–3.6V rails, the device remains fully functional as VCC drops to 1.0V, ensuring the RESET output stays asserted until supply recovers. This capability is explicitly tested and guaranteed per the datasheet, distinguishing the MAX16074RS17D2+T from many competitors that lose reset validity below 1.2V.