Analog Devices Inc./Maxim Integrated MAX6757UTWD3

Overview

MAX6757UTWD3 from Maxim Integrated is a low-power, single-voltage window detector IC that monitors system supply voltage (VCC) for undervoltage and overvoltage conditions with independent push-pull UV and open-drain OV outputs, ±10% factory-trimmed threshold window (3.3V nominal), 100ms minimum reset timeout, and manual reset input - used in microprocessor power supervision for telecom and industrial control systems.

For engineers reviewing the MAX6757UTWD3 datasheet, MAX6757UTWD3 pinout, MAX6757UTWD3 application, or MAX6757UTWD3 equivalent, this page delivers verified electrical specifications, SOT23-6 package layout, functional role in power-rail monitoring, and validated alternative options for voltage supervisor selection.

Technical Context

The MAX6757UTWD3 implements dual-threshold comparators with internal reference and hysteresis (0.7%) to detect VCC falling below UVTH or rising above OVTH. It uses a SET pin biased to VCC to configure ±10% window tolerance and asserts UV (active-low push-pull) and OV (active-low open-drain) independently without shared timing delay.

Its 100ms minimum timeout period applies only to UV output deassertion after recovery; OV output responds within 20µs with no delay and latches only when paired with OVLATCH (not present on MAX6757). The device operates from 1.0V to 6.0V supply and guarantees correct output states down to VCC = 1.0V.

Key Specifications

Pinout & Package

MAX6757UTWD3 is housed in a 6-pin SOT23-6 package with exposed pad (not internally connected), optimized for space-constrained PCB layouts and thermal performance in high-density applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6758UTWD3, MAX6757UTWD3 provides native active-low UV compatible with most microcontrollers, while TLV809K33DBZR omits overvoltage detection entirely - making MAX6757UTWD3 the only option among the three supporting independent UV/OV fault signaling for 3.3V rails.

Availability

MAX6757UTWD3 is available at Aetrix Electronics and suitable for telecom power management, industrial PLC I/O modules, and automotive body control applications requiring stable component supply, extended temperature support, and dual-fault voltage supervision.

Supply support for MAX6757UTWD3 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 connectivity in demanding environments.

The MAX6754–MAX6764 family was engineered specifically for reliable, low-power voltage supervision in space- and power-constrained systems - delivering factory-trimmed accuracy, wide temperature operation, and flexible output configurations for microprocessor-based equipment.

FAQ

What is the exact undervoltage and overvoltage threshold range for MAX6757UTWD3 at 25°C?

The MAX6757UTWD3 has a nominal 3.3V supply monitoring window with ±10% factory trim. At +25°C, its undervoltage threshold (UVTH) is 2.970V to 3.053V (falling VCC), and overvoltage threshold (OVTH) is 3.630V to 3.713V (rising VCC). These values are guaranteed across −40°C to +125°C per datasheet Table 1 (T-suffix) and Table 3 (D3-suffix).

Does MAX6757UTWD3 support dual-voltage monitoring like MAX6760?

No. MAX6757UTWD3 monitors only a single supply (VCC). It belongs to the MAX6757–MAX6759 subgroup, which lacks VCC2 input and dual-supply functionality. Dual-voltage capability is exclusive to MAX6760–MAX6762 variants, which feature separate VCC and VCC2 pins and additional latch control (OVLATCH).

What output configurations does MAX6757UTWD3 provide, and how do they interface with a microcontroller?

MAX6757UTWD3 provides UV as an active-low push-pull output and OV as an active-low open-drain output. UV can directly drive a standard µP reset pin (e.g., ARM Cortex-M nRESET), while OV requires an external pull-up to VCC or another rail to generate a logic-high idle state - enabling independent fault flagging without shared signal contention.

Can the window tolerance of MAX6757UTWD3 be adjusted beyond ±10%?

No. The "W" in MAX6757UTWD3 denotes fixed ±10% window (SET = VCC), and the device does not support ±5% or ±15% modes. Unlike MAX6763/MAX6764, it lacks externally adjustable thresholds. To achieve other tolerances, select MAX6757UTTD3 (±5%) or MAX6757UTZD3 (±15%), or use a different family member with SET bias flexibility.

Is MAX6757UTWD3 pin-compatible with other SOT23-6 voltage supervisors such as TLV809 series?

No. MAX6757UTWD3 has a unique 6-pin SOT23-6 pinout (VCC, GND, MR, SET, UV, OV) incompatible with TLV809x (SOT23-3) or TPS3808Gxx (SOT23-6 but different function mapping). Pin compatibility is limited to within the MAX6757–MAX6759 group (e.g., MAX6758UTWD3 shares identical pinout but differs in UV polarity).