Analog Devices Inc./Maxim Integrated MAX6715UTVHD3-T

Overview

MAX6715UTVHD3-T from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in SOT23-6 package, monitoring VCC1 (primary) and VCC2 (secondary) supplies with factory-trimmed reset thresholds - 4.625V (VTH1) and 3.075V (VTH2) - and delivering a 210ms minimum reset timeout. It asserts active-low open-drain RST when either supply drops below threshold and maintains reset for the full timeout after recovery. Used in telecom power sequencing and multivoltage embedded controllers requiring guaranteed reset validity down to VCC = 0.8V.

For engineers reviewing the MAX6715UTVHD3-T datasheet, MAX6715UTVHD3-T pinout, MAX6715UTVHD3-T application, or MAX6715UTVHD3-T equivalent, key selection criteria include dual-supply monitoring capability, 210ms reset timeout, open-drain RST output, manual reset input (MR), and guaranteed operation at VCC ≥ 0.8V - all confirmed for this exact variant per Maxim's ordering guide and electrical specifications.

Technical Context

The MAX6715UTVHD3-T implements two independent voltage comparators with internal precision references (VTH1 = 4.625V ±125mV, VTH2 = 3.075V ±75mV) and a digital reset timeout timer (210ms min). Its open-drain RST output is referenced to VCC1 and requires an external pullup; MR input features a 50kΩ internal pullup to VCC1 and supports TTL/CMOS logic levels.

This variant belongs to the MAX6715–MAX6729 family's dual-monitor, no-watchdog, no-power-fail subgroup (per Selector Guide). It lacks WDI, PFI/PFO, and RSTIN functionality - confirmed by pin mapping (6-pin SOT23 with pins: RST, GND, MR, VCC2, VCC1, NC) and absence of those features in its part-number suffix "D3" and ordering table entry.

Key Specifications

Pinout & Package

MAX6715UTVHD3-T is housed in a 6-pin SOT23-6 package (JEDEC MO-178AA), with 1.0mm pitch, 2.9mm × 1.6mm footprint, and 1.1mm max height. Pin 1 is marked with dot; device orientation follows standard SOT23 pinout convention.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-voltage supervisory applications.

Compared with MAX6715UTVHD3-T, MAX6716UTVHD3-T offers direct-drive reset capability but sacrifices bus flexibility, while TPS3808G33DBVR reduces power consumption by 82% yet eliminates secondary supply supervision - making it unsuitable for true dual-rail validation.

Availability

MAX6715UTVHD3-T is available at Aetrix Electronics and suitable for telecom infrastructure, industrial control, and medical diagnostics requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6715UTVHD3-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 high-performance analog and mixed-signal ICs for power, sensing, and interface applications, with emphasis on reliability and integration density.

The MAX6715–MAX6729 family delivers compact, ultra-low-power supervisory circuits optimized for multivoltage embedded systems where board space, power budget, and brownout resilience are critical design constraints.

FAQ

What is the exact reset threshold voltage for VCC1 on MAX6715UTVHD3-T?

The MAX6715UTVHD3-T has a factory-trimmed VCC1 reset threshold of 4.625V (typical), with ±125mV tolerance over temperature and supply variations. This value is fixed by the "TV" suffix per Maxim's Reset Voltage Threshold Suffix Guide and is verified in the Electrical Characteristics table under VTH1 parameter.

Does MAX6715UTVHD3-T support watchdog timer functionality?

No, MAX6715UTVHD3-T does not include watchdog timer functionality. Per the Selector Guide and functional description, only MAX6721–MAX6729 variants support WDI input; MAX6715UTVHD3-T is explicitly listed as having no watchdog input, confirming its role as a basic dual-supply supervisor without activity monitoring.

What is the function of Pin 6 (NC) on MAX6715UTVHD3-T?

Pin 6 on MAX6715UTVHD3-T is designated NC (No Connect) and is internally unconnected. It must remain electrically floating or be tied to GND per Maxim's layout recommendations to avoid parasitic coupling; it serves no functional role in reset supervision or power monitoring.

Can MAX6715UTVHD3-T monitor a 1.8V supply as VCC2?

Yes, MAX6715UTVHD3-T can monitor a 1.8V supply as VCC2, but only as a power source - not as a monitored rail. Its VCC2 input supports voltages from 0.9V to 3.3V for internal biasing, but the factory-trimmed VTH2 threshold is fixed at 3.075V. To supervise 1.8V, a different variant (e.g., MAX6715UTLTD3-T with VTH2 = 1.665V) is required.

Is MAX6715UTVHD3-T compatible with lead-free soldering processes?

Yes, MAX6715UTVHD3-T is available in lead-free packaging. The "-T" suffix denotes tape-and-reel packaging; lead-free compliance is achieved by specifying "+T" instead of "-T" at order time per Maxim's Ordering Information note, and the device meets JEDEC J-STD-020 moisture sensitivity level 1 requirements.