Analog Devices Inc./Maxim Integrated MAX6716UTSVD3

Overview

MAX6716UTSVD3 from Maxim Integrated is a dual-voltage microprocessor supervisory circuit in 6-pin SOT23 package, monitoring VCC1 (4.625V threshold) and VCC2 (3.075V threshold) with 210ms reset timeout, push-pull active-low RST output, and guaranteed reset validity down to VCC1 or VCC2 = 0.8V - used in telecom power sequencing and industrial embedded controllers.

For engineers reviewing the MAX6716UTSVD3 datasheet, MAX6716UTSVD3 pinout, MAX6716UTSVD3 application, or MAX6716UTSVD3 equivalent, key selection criteria include dual-supply threshold accuracy (±1.5% over temperature), ultra-low 14µA supply current at 3.6V, immunity to sub-20µs VCC transients, and compatibility with manual-reset and watchdog-free system architectures.

Technical Context

The MAX6716UTSVD3 implements two independent voltage comparators with factory-trimmed thresholds (VTH1 = 4.625V, VTH2 = 3.075V), each referenced to internal bandgap and featuring 20ppm/°C tempco and 0.5% hysteresis. It uses a digital timeout counter triggered on any threshold violation, with reset assertion held for 210ms (typ) after all monitored supplies recover.

Its push-pull RST output is referenced to VCC1, delivers VOL ≤ 0.4V at 3.2mA sink, and maintains valid logic state even when VCC1 or VCC2 drops to 0.8V - enabling brownout detection in low-power wake-up circuits without external biasing.

Key Specifications

Pinout & Package

MAX6716UTSVD3 is housed in a 6-pin SOT23 package (2.9mm × 1.6mm × 1.1mm), RoHS-compliant, with gull-wing leads and thermal pad not connected internally.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS3808G33DBVR and ADM6716ARTZ-4625-R7, MAX6716UTSVD3 provides tighter threshold tolerance (±1.5% vs ±2.5%), lower supply current (14µA vs 20µA), and native dual-rail support without external components - making it optimal for space-constrained, multi-rail industrial controllers requiring high accuracy.

Availability

MAX6716UTSVD3 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial PLCs, and automotive body electronics requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6716UTSVD3 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, sensing, and interface applications in harsh environments.

The MAX6715A–MAX6729A family targets compact, high-reliability supervisory functions in multi-rail embedded systems - specifically engineered to replace discrete reset solutions with guaranteed operation down to 0.8V and minimal board space.

FAQ

What is the exact reset threshold voltage for VCC1 and VCC2 on MAX6716UTSVD3?

The MAX6716UTSVD3 has factory-trimmed VCC1 reset threshold of 4.625V (±1.5%) and VCC2 reset threshold of 3.075V (±1.5%), both specified over -40°C to +125°C. These values are encoded in the "TS" (VTH1 = 4.625V) and "V" (VTH2 = 3.075V) suffixes per Maxim's Reset Voltage Threshold Suffix Guide, and confirmed in the Electrical Characteristics table on page 2 of the datasheet.

Does MAX6716UTSVD3 support manual reset functionality?

Yes, MAX6716UTSVD3 includes an active-low manual-reset input (MR) on Pin 3, with internal 50kΩ pullup to VCC1. Pulling MR low forces reset assertion for the full 210ms timeout period, then holds reset for that duration after MR returns high. This enables hardware-initiated recovery without firmware involvement - critical for field-service diagnostics in industrial equipment using MAX6716UTSVD3.

Is the reset output of MAX6716UTSVD3 push-pull or open-drain?

The MAX6716UTSVD3 features a push-pull active-low RST output on Pin 1, referenced to VCC1. It sinks up to 3.2mA while asserted (VOL ≤ 0.4V) and sources current when deasserted (VOH ≥ 0.8 × VCC1). This eliminates the need for an external pullup resistor, simplifying layout and improving noise immunity compared to open-drain alternatives - a key differentiator of MAX6716UTSVD3 in high-density designs.

What is the minimum supply voltage at which MAX6716UTSVD3 guarantees valid reset operation?

MAX6716UTSVD3 guarantees correct reset output logic state when either VCC1 or VCC2 remains greater than 0.8V - explicitly stated in the General Description and Absolute Maximum Ratings sections. This 0.8V minimum enables reliable brownout detection in battery-powered systems where supply may sag below 1.0V during peak load, a capability confirmed across all temperature grades and central to MAX6716UTSVD3's use in automotive and medical applications.

Can MAX6716UTSVD3 monitor a third voltage rail?

No, MAX6716UTSVD3 is a dual-supply supervisor and does not include RSTIN, WDI, PFI, or other auxiliary inputs. The "D3" suffix denotes 210ms timeout and push-pull RST, but no third-rail capability. Models like MAX6720AUTLTD3-T add RSTIN for triple-voltage monitoring; MAX6716UTSVD3 is strictly optimized for two-rail systems where simplicity, size, and cost are prioritized - making it ideal for applications where only primary and secondary supplies require supervision.