Analog Devices Inc./Maxim Integrated MAX16073RS22D3+T

Overview

MAX16073RS22D3+T from Maxim Integrated is a nanoPower microprocessor supervisory circuit with push-pull, active-high reset output, 2.20V factory-trimmed threshold (±2.5% over temperature), 140ms reset timeout, and 0.7µA supply current at 1.8V. It monitors VCC in portable battery-powered systems to assert reset during power-up, brownout, or manual reset events.

For engineers reviewing the MAX16073RS22D3+T datasheet, MAX16073RS22D3+T pinout, MAX16073RS22D3+T application, or MAX16073RS22D3+T equivalent, this device is selected for ultra-low-power, space-constrained embedded systems requiring guaranteed reset assertion down to VCC = 1.0V, immunity to sub-100ns VCC transients, and no external component dependencies.

Technical Context

The MAX16073RS22D3+T integrates a precision band-gap reference, comparator, and internally trimmed resistors to set its 2.20V detection threshold with ±2.5% accuracy across –40°C to +85°C. Its push-pull active-high RESET output drives high when VCC falls below 2.20V or MR is pulled low, remaining high for 140ms after VCC exceeds threshold and MR is released.

It features a 50kΩ internal MR pullup, guarantees valid reset operation down to VCC = 1.0V, and rejects fast VCC transients via built-in glitch filtering (100ns minimum rejection width). The device operates from 1.2V to 5.5V supply and draws only 0.7µA at 1.8V, enabling multi-year battery life in always-on monitoring applications.

Key Specifications

Pinout & Package

MAX16073RS22D3+T is housed in a 1mm × 1mm, 4-bump UCSP™ chip-scale package (R41C1-1 outline), 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 MAX16073RS22D2+T and TPS3808G33DBVR, the MAX16073RS22D3+T uniquely delivers 2.20V precision threshold, 140ms timeout, and 0.7µA current in a 1mm² UCSP-enabling longest battery life and smallest layout in 2.2V–2.4V rail systems.

Availability

MAX16073RS22D3+T is available at Aetrix Electronics and suitable for portable medical sensors, wireless earbuds, smart wearables, industrial handheld scanners, and battery-backed IoT edge nodes requiring stable component supply and long-term lifecycle support.

Supply support for MAX16073RS22D3+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 industrial, automotive, communications, and consumer applications.

The MAX1607x family targets ultra-low-power, space-constrained embedded systems-delivering nanoPower supervision with factory-trimmed thresholds and minimal external components for battery longevity and PCB miniaturization.

FAQ

What is the exact reset threshold voltage of MAX16073RS22D3+T and how accurate is it over temperature?

The MAX16073RS22D3+T has a factory-trimmed reset threshold of 2.20V at +25°C, with guaranteed accuracy of ±2.5% across the full –40°C to +85°C operating range. This is achieved using internally trimmed resistors and a precision band-gap reference, eliminating need for external calibration. The MAX16073RS22D3+T maintains this tolerance without drift or adjustment throughout its specified temperature envelope.

Does MAX16073RS22D3+T guarantee reset functionality at very low supply voltages?

Yes, the MAX16073RS22D3+T guarantees valid reset assertion down to VCC = 1.0V, as confirmed in the Absolute Maximum Ratings and Electrical Characteristics tables. This ensures fail-safe behavior during deep brownout or end-of-life battery conditions where other supervisors may cease operation. The MAX16073RS22D3+T remains fully functional and asserts RESET correctly even at this minimum voltage.

What is the reset timeout period for MAX16073RS22D3+T and how is it implemented?

The MAX16073RS22D3+T provides a fixed 140ms (typical) reset timeout period, denoted by the "D3" suffix per Table 2. This timeout begins after VCC rises above the 2.20V threshold and MR is released, holding RESET high for the full duration to ensure complete µP initialization. The MAX16073RS22D3+T implements this internally with no external capacitor or resistor required.

How does the manual reset (MR) input function on MAX16073RS22D3+T?

The MR input on MAX16073RS22D3+T is active-low with an internal 50kΩ pullup to VCC, allowing direct connection of a momentary switch to GND-no external components needed. When MR is pulled low, RESET immediately goes high (active); RESET remains high for the full 140ms timeout after MR returns high. The MAX16073RS22D3+T also rejects sub-100ns glitches on MR, ensuring noise immunity.

What package type and footprint does MAX16073RS22D3+T use, and is it RoHS-compliant?

The MAX16073RS22D3+T uses a 1mm × 1mm, 4-bump UCSP™ (Ultra Compact Silicon Package) with R41C1-1 outline, designed for ultra-dense PCB layouts. The "+" suffix confirms lead(Pb)-free and RoHS-compliant construction. This package requires precise stencil design and reflow profile control but delivers >70% area reduction versus SOT-23 alternatives. The MAX16073RS22D3+T's bump map is fully documented in the Maxim datasheet for reliable assembly.