Analog Devices Inc./Maxim Integrated MAX6714AUB+T

Overview

The MAX6714AUB+T from Maxim Integrated is a quad voltage monitor IC with one fixed VCC reset channel and three adjustable power-fail comparators, operating from 2.0V to 5.5V supply, featuring ±2.0% threshold accuracy, 140ms min reset timeout, and 60µA typical supply current. It serves as a system supervisory device in multivoltage embedded systems requiring reliable power sequencing and brownout detection.

For engineers reviewing the MAX6714AUB+T datasheet, MAX6714AUB+T pinout, MAX6714AUB+T application, or MAX6714AUB+T equivalent, this page delivers verified functional identity, confirmed pin roles, exact threshold behavior for 5V VCC with 10% tolerance, real-world timing constraints, and validated alternative options for power-good monitoring in telecom and computing platforms.

Technical Context

The MAX6714AUB+T integrates a precision 0.62V internal reference, three high-impedance PFI inputs (PFI1–PFI3), and a dedicated VCC reset input with built-in 140ms timeout circuitry. Its RESET output asserts low on either VCC undervoltage or manual reset initiation, remaining asserted for the full timeout period after recovery.

All three PFI inputs compare external voltages-scaled via resistor dividers-to the 0.62V reference; each drives a corresponding open-drain PFO output (PFO1–PFO3) with 10µA internal pullup. The device includes an internal 20kΩ MR pullup and supports wire-ORed outputs across logic domains up to 5.5V.

Key Specifications

Pinout & Package

MAX6714AUB+T is housed in a 10-pin µMAX package (3.0mm × 3.0mm, 0.6mm height), lead-free and RoHS-compliant, with exposed pad for thermal enhancement.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6714DUB+T, the MAX6714AUB+T provides higher VCC reset threshold (4.25V vs. 2.85V) suited to 5V systems, while both share identical PFI flexibility and timing behavior; TPS3808G33DBVR offers ultra-low current but omits the core multirail supervision capability essential to MAX6714AUB+T's design purpose.

Availability

MAX6714AUB+T is available at Aetrix Electronics and suitable for telecommunications infrastructure, server board design, and industrial PLC development requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for MAX6714AUB+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 industrial and communications markets.

The MAX6714AUB+T belongs to Maxim's voltage supervisor product line, engineered specifically for multivoltage system supervision in space-constrained, thermally demanding environments where accuracy, low power, and integrated timing are critical.

FAQ

What is the exact reset threshold voltage for MAX6714AUB+T?

The MAX6714AUB+T has a factory-trimmed VCC reset threshold of 4.25V (min), 4.38V (typ), and 4.50V (max) - specified for 10% tolerance on a 5.0V nominal supply. This threshold is internally set and not user-adjustable; it triggers the RESET output when VCC falls below this range during power-down or brownout events.

Can MAX6714AUB+T monitor voltages higher than 5V?

Yes - the MAX6714AUB+T can monitor voltages above 5V using its three PFI inputs (PFI1–PFI3) with external resistor dividers. Each PFI input compares the divided voltage to a precise 0.62V internal reference, enabling accurate monitoring of rails up to 24V or higher depending on divider ratio and voltage rating of external resistors.

Does MAX6714AUB+T require external pullup resistors on its open-drain outputs?

No - the MAX6714AUB+T includes 10µA internal pullup current sources on RESET, PFO1, PFO2, and PFO3, eliminating the need for external pullups in most 3.3V or 5V logic interfacing. External pullups are only required when interfacing to logic supplies outside the 2.0V–5.5V range or when stronger drive capability is needed.

How does the manual reset (MR) function interact with the VCC reset in MAX6714AUB+T?

In the MAX6714AUB+T, asserting MR low forces RESET low immediately, regardless of VCC status. After MR is released, RESET remains low for the full 140ms minimum timeout period - identical to the delay after VCC recovery. Both events trigger the same internal timer, ensuring consistent reset pulse width whether initiated by supply fault or operator action.

Is MAX6714AUB+T pin-compatible with MAX6709 series devices?

No - MAX6714AUB+T and MAX6709 share the same 10-pin µMAX package footprint but have fundamentally different pinouts and functions. MAX6709 uses pins 1–4 for IN1–IN4 and pins 6–9 for PWRGD1–PWRGD4, whereas MAX6714AUB+T assigns pins 1–3 to PFI3–PFI1, pin 5 to MR, and pins 7–9 to PFO1–PFO3. PCB layout is not interchangeable.