Analog Devices Inc./Maxim Integrated MAX6714BUB+T

Overview

MAX6714BUB+T from Maxim Integrated is a quad voltage monitor IC with integrated reset timing, designed for multivoltage system supervision. It monitors one fixed VCC supply (5.0V ±5%) and three adjustable power-fail inputs (PFI1–PFI3) referenced to 0.62V, delivers active-low open-drain RESET and three PFO outputs, consumes 60µA typical supply current, and operates from 2.0V to 5.5V across –40°C to +85°C.

For engineers reviewing the MAX6714BUB+T datasheet, MAX6714BUB+T pinout, MAX6714BUB+T application, or MAX6714BUB+T equivalent, this page provides verified functional identity, confirmed pin roles, factory-trimmed threshold accuracy (±2.0%), 140ms min reset timeout, and real-world multivoltage monitoring use cases in telecom and computing systems.

Technical Context

The MAX6714BUB+T implements a dedicated VCC reset channel with internal undervoltage lockout and a 140ms minimum timeout period, plus three independent high-impedance power-fail comparators each referenced to a stable 0.62V internal bandgap. All outputs are active-low, open-drain with 10µA internal pullup to VCC.

It features built-in 0.3% threshold hysteresis, immunity to supply transients up to 100ns, manual reset (MR) input with 20kΩ internal pullup, and supports external resistor-divider networks on PFI inputs to monitor voltages down to 0.62V or up to 5.5V - with no external components required for basic operation.

Key Specifications

Pinout & Package

Package: 10-pin µMAX (3.0mm × 3.0mm, 0.6mm height, 0.5mm pitch), lead-free, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6714CUB+T and TPS3307-18DGNR, the MAX6714BUB+T uniquely combines 5.0V ±5% VCC reset precision, three scalable PFI inputs, and integrated 140ms timeout - making it optimal for compact, high-accuracy multivoltage supervision where auxiliary rail thresholds are nonstandard.

Availability

MAX6714BUB+T is available at Aetrix Electronics and suitable for telecommunications infrastructure, server board management, and notebook platform development requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant packaging.

Supply support for MAX6714BUB+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 and mixed-signal ICs for power management, sensing, and interface applications - with emphasis on high reliability and integration density.

The MAX67xx family targets multivoltage system supervision, delivering factory-trimmed accuracy, ultra-low quiescent current, and compact packaging for space-constrained computing and communications equipment.

FAQ

What is the exact reset threshold voltage for MAX6714BUB+T?

The MAX6714BUB+T has a VCC reset threshold of 4.50V (min), 4.63V (typ), and 4.75V (max) - corresponding to 5.0V nominal supply with ±5% tolerance. This threshold is factory-trimmed and guaranteed across –40°C to +85°C, referenced to an internal bandgap for stability.

Does MAX6714BUB+T require external components to monitor a 12V supply?

Yes - to monitor 12V with MAX6714BUB+T, connect the supply to a PFI pin (e.g., PFI1) through an external resistor divider that scales 12V down to ≤0.635V at the PFI input. The internal 0.62V reference enables precise scaling; no other external components (e.g., capacitors or comparators) are needed.

Can MAX6714BUB+T generate a reset signal from a power-fail condition?

Yes - connect a PFO output (e.g., PFO1) to the MR input. When the associated PFI input drops below threshold, PFO1 goes low and triggers the internal reset timer. MAX6714BUB+T then asserts RESET for the full 140ms minimum timeout period, providing a clean, timed reset from auxiliary rail faults.

What is the function of the MR pin on MAX6714BUB+T?

The MR pin on MAX6714BUB+T is an active-low manual reset input with a 20kΩ internal pullup to VCC. Driving MR low asserts RESET immediately; RESET remains low for the full 140ms timeout after MR returns high - ensuring µP reset compliance even if MR pulse is brief.

Is MAX6714BUB+T pin-compatible with MAX6709BUB+T?

No - MAX6714BUB+T and MAX6709BUB+T have different pinouts and functions. MAX6714BUB+T uses pins 1–4 for PFI inputs and pins 6–9 for PFO/RESET, while MAX6709BUB+T uses pins 1–4 for IN1–IN4 and pins 6–9 for PWRGD outputs. PCB layout and firmware interface must be redesigned for substitution.