Analog Devices Inc./Maxim Integrated MAX16125WTCS16+T

Overview

MAX16125WTCS16+T from Maxim Integrated is a dual-function pushbutton controller with integrated V_CC supply monitoring and manual reset supervision. It features one debounced manual reset input (MR), active-low open-drain RESET and SRESET outputs, factory-trimmed 2.93V reset threshold (±2.5%), 13s setup delay (SEL = GND), and 7.2ms reset timeout period - designed for reliable hard-reset activation in portable medical and consumer devices operating from 1.6V to 5.5V.

For engineers reviewing the MAX16125WTCS16+T datasheet, MAX16125WTCS16+T pinout, MAX16125WTCS16+T application, or MAX16125WTCS16+T equivalent, key selection criteria include its 5µA quiescent current at 3V, guaranteed RESET validity down to V_CC = 0.95V, 20ms input deglitching, resistor- or pin-selectable setup delay, and automotive-grade −40°C to +125°C operation in a 0.86mm × 1.25mm WLP package.

Technical Context

The MAX16125WTCS16+T implements a dedicated analog comparator for V_CC monitoring with 30ppm/°C tempco and 2% hysteresis, coupled with digital timing logic for manual reset assertion. Its MR input includes a fixed 20ms deglitch block and internal 50kΩ pullup, while SEL pin configuration selects t_SU = 13s per Table 1a (suffix 'D').

RESET and SRESET outputs are open-drain with 0.4V VOL at 100µA sink, and SRESET mirrors MR state after debouncing. The device guarantees valid output logic for V_CC ≥ 0.95V and tolerates falling transients ≤10µs when overdriven by 0.1V below V_TH.

Key Specifications

Pinout & Package

MAX16125WTCS16+T uses a 0.86mm × 1.25mm, 6-bump wafer-level package (WLP) with bottom-side solder bumps. Pin mapping follows standard bump layout: A1 = RESET, A2 = SRESET, B1 = SEL, B2 = MR, C1 = V_CC, C2 = GND.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar pushbutton supervisor applications.

Compared with MAX16124WTCS16+T, MAX16125WTCS16+T offers open-drain flexibility for bus sharing but requires a pullup; versus TPS3808G33DBVR, it adds full pushbutton control and 13s setup delay - critical for medical and portable UI safety compliance.

Availability

MAX16125WTCS16+T is available at Aetrix Electronics and suitable for glucose monitors, smartphones, eBook readers, and portable instrumentation requiring stable component supply, automotive-grade temperature resilience, and ultra-low-power reset supervision.

Supply support for MAX16125WTCS16+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 portable applications.

The MAX16122–MAX16125 family delivers compact, low-power pushbutton supervisors with integrated supply monitoring - engineered specifically for space-constrained, battery-operated devices needing certified reset reliability and ESD-hardened front-panel interfaces.

FAQ

What is the factory-set reset threshold voltage for MAX16125WTCS16+T?

The MAX16125WTCS16+T has a factory-trimmed V_CC reset threshold of 2.93V ±2.5%, optimized for accurate monitoring of 3.3V power rails. This value is laser-trimmed during production and does not require external components. The threshold remains stable across temperature with a 30ppm/°C tempco, and hysteresis is fixed at 2% to prevent chatter near the trip point. This specification is confirmed in Table 3 of the official datasheet.

How is the 13-second manual reset setup delay configured on MAX16125WTCS16+T?

The 13-second setup delay (t_SU) on MAX16125WTCS16+T is set by connecting the SEL pin to GND, as defined by the 'D' suffix in the part number per Table 1a. No external resistor is required. The device internally routes SEL = GND to select the 13s option; leaving SEL unconnected or tying it to V_CC would yield 15s or 17s respectively. This configuration is validated in the Functional Diagram and Typical Operating Circuits sections.

Does MAX16125WTCS16+T support both push-pull and open-drain RESET outputs?

No - MAX16125WTCS16+T features open-drain RESET and SRESET outputs exclusively, as indicated by the '5' in the part number and confirmed in the Selector Guide. The MAX16124WTCS16+T variant provides push-pull outputs. Open-drain operation requires an external pullup resistor but enables wired-OR connections and voltage-level translation, which is essential for interfacing with diverse microprocessor reset inputs.

What is the minimum V_CC level at which MAX16125WTCS16+T guarantees valid RESET output logic?

MAX16125WTCS16+T guarantees correct RESET output logic (high-impedance or pulled low) for V_CC ≥ 0.95V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. Below 0.95V, output behavior is not guaranteed - a critical design boundary for brownout recovery sequencing. This parameter is measured and production-tested across the full −40°C to +125°C range.

Can MAX16125WTCS16+T debounce multiple pushbutton inputs simultaneously?

No - MAX16125WTCS16+T has only one manual reset input (MR), unlike the dual-input MAX16122/MAX16123 variants. It debounces that single MR input with a fixed 20ms deglitch period (t_DB), rejecting contact bounce and EMI transients. The SRESET output mirrors the debounced MR state, providing a clean soft-reset signal. For dual-button applications, MAX16122WTCS16+T or MAX16123WTCS16+T must be selected.