Analog Devices Inc./Maxim Integrated MAX6754UKWD0

Overview

The MAX6754UKWD0 from Maxim Integrated is a low-power, single-voltage window detector IC that monitors system supply voltage (VCC) for undervoltage and overvoltage conditions, asserting a combined RESET output when thresholds are violated. It features factory-trimmed 3.3V nominal monitoring (±10% window), 20µs typical propagation delay, manual reset input (MR), and operates from -40°C to +125°C in a 5-pin SOT23-5 package - used in microprocessor power supervision for telecom and industrial control systems.

For engineers reviewing the MAX6754UKWD0 datasheet, MAX6754UKWD0 pinout, MAX6754UKWD0 application, or MAX6754UKWD0 equivalent, key selection criteria include its fixed 3.3V threshold with ±10% window select via SET pin, push-pull active-low RESET output, 10µA supply current, and compatibility with 1V–6V VCC operation - critical for reliable brownout and overvoltage detection in space-constrained embedded designs.

Technical Context

The MAX6754UKWD0 implements dual comparators with internal reference and hysteresis (0.7%) to detect VCC crossing UVTH (falling) or OVTH (rising). Its SET pin configures window width (GND = ±5%, VCC = ±10%, VCC/2 = ±15%), and MR provides asynchronous reset assertion with 4µs minimum pulse width and 26kΩ internal pullup.

It uses a precision bandgap reference and rail-to-rail input stage enabling valid operation down to VCC = 1.0V, while maintaining guaranteed RESET logic state and 300ns transient immunity. The 20µs D0 timeout option eliminates external timing components and supports fast fault response in real-time systems.

Key Specifications

Pinout & Package

MAX6754UKWD0 is housed in a 5-pin SOT23-5 package with exposed pad (not connected internally per datasheet; optional GND connection for thermal enhancement).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6755UKWD0 and TLV809K33DBZR, the MAX6754UKWD0 uniquely delivers combined UV/OV detection with user-selectable window width and sub-100µs fault response - making it optimal for systems requiring comprehensive supply integrity validation without design compromises.

Availability

MAX6754UKWD0 is available at Aetrix Electronics and suitable for telecom infrastructure, industrial automation, and automotive electronics requiring stable component supply with extended temperature support and low-power supervision.

Supply support for MAX6754UKWD0 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 applications across industrial, automotive, and communications markets.

The MAX6754UKWD0 belongs to the MAX6754–MAX6764 family of low-power window detectors engineered specifically for robust, single-supply voltage monitoring in space- and power-constrained embedded systems.

FAQ

What is the exact undervoltage and overvoltage threshold for MAX6754UKWD0?

The MAX6754UKWD0 has a factory-trimmed nominal 3.3V threshold with ±10% window selected by connecting the SET pin to VCC. This yields an undervoltage threshold (UVTH) of approximately 2.97V (falling) and overvoltage threshold (OVTH) of approximately 3.63V (rising), with 0.7% hysteresis. These values are specified over -40°C to +125°C and confirmed in the MAX6754–MAX6764 datasheet Tables.

Does MAX6754UKWD0 support operation below 1.4V VCC?

Yes, MAX6754UKWD0 guarantees correct RESET output logic state for VCC down to 1.0V, though voltage monitoring functionality requires VCC ≥ 1.4V per datasheet Note 2. Below 1.4V, the device maintains asserted RESET but cannot detect further UV/OV transitions - a critical feature for safe brownout holdover in ultra-low-power systems.

How is the SET pin configured for ±10% window on MAX6754UKWD0?

For ±10% window operation, the SET pin of MAX6754UKWD0 must be connected directly to VCC. This configuration is explicitly defined in the Pin Description table and Functional Diagrams. Pulling SET to GND selects ±5%; biasing to VCC/2 (via resistor divider) selects ±15%. No external components are needed for the ±10% mode.

What is the function of the MR pin on MAX6754UKWD0, and what is its internal pullup value?

The MR pin on MAX6754UKWD0 is an active-low manual reset input that forces the RESET output low regardless of VCC status. It features an internal 26kΩ pullup resistor to VCC, eliminating the need for an external pullup. Minimum MR pulse width is 4µs, and propagation delay (tMR_P) matches the D0 option at 20µs typical.

Can MAX6754UKWD0 be used in automotive applications?

Yes, MAX6754UKWD0 is rated for -40°C to +125°C operation and offered in lead-free packaging, meeting baseline requirements for under-hood and body-control automotive applications. While not AEC-Q100 qualified by default, its temperature range, transient immunity (300ns), and supply robustness make it suitable for non-safety-critical automotive subsystems where qualification is managed at the module level.