Analog Devices Inc./Maxim Integrated MAX6754UKZD0+

Overview

The MAX6754UKZD0+ from Analog Devices is a low-power, single-supply window voltage detector monitoring 2.5V system supplies with ±5% threshold window (UVTH = 2.25V–2.375V, OVTH = 2.625V–2.75V), 20μs typical reset timeout, active-low open-drain RESET output, and manual reset input - used in DC-DC converter modules to prevent microprocessor operation during out-of-spec rail conditions.

For engineers reviewing the MAX6754UKZD0+ datasheet, MAX6754UKZD0+ pinout, MAX6754UKZD0+ application, or MAX6754UKZD0+ equivalent, key selection criteria include factory-trimmed 2.5V monitoring accuracy, -40°C to +125°C operation, 10μA supply current, SOT23-5 package compatibility, and immunity to sub-300ns transients in telecom power sequencing.

Technical Context

The MAX6754UKZD0+ implements a fixed-ratio internal voltage divider to set nominal thresholds at 2.5V, with SET pin tied to GND to configure ±5% window hysteresis (VHYST = 0.7%). It uses a bandgap reference and comparator architecture with propagation delay of 20μs for both UV and OV detection events.

It features a manual reset input (MR) with 26kΩ internal pullup, 4μs minimum pulse width support, and 300ns transient immunity. The open-drain RESET output asserts low when VCC falls below UVTH or rises above OVTH, deasserting after 20μs once VCC returns within window - no latched behavior or dual-voltage monitoring.

Key Specifications

Pinout & Package

The MAX6754UKZD0+ is housed in a 5-pin SOT23 package (package code U5+1A, outline 21-0057), with exposed pad not present. Thermal resistance θJA = 255.9°C/W on multilayer board ensures stable operation at full temperature range without heatsinking.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6754UKTD0+ and TLV809E25DBZR, the MAX6754UKZD0+ uniquely delivers factory-trimmed 2.5V window detection with 20μs recovery, manual reset capability, and ±5% hysteresis - essential for high-reliability 2.5V FPGA and ASIC power management where timing margins and configurability are critical.

Availability

MAX6754UKZD0+ is available at Aetrix Electronics and suitable for telecom power sequencing, server VRM monitoring, and industrial motor drive control requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6754UKZD0+ 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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The MAX6754UKZD0+ belongs to the MAX6754–MAX6764 family of low-power window voltage detectors, designed specifically for robust, high-accuracy power supply monitoring in harsh environments with wide temperature and noise challenges.

FAQ

What is the exact undervoltage and overvoltage threshold range for MAX6754UKZD0+ at full temperature?

The MAX6754UKZD0+ has a guaranteed undervoltage threshold (UVTH) of 2.25V (min) to 2.375V (max) and overvoltage threshold (OVTH) of 2.625V (min) to 2.75V (max) across -40°C to +125°C. These values derive from its Z-suffix 2.5V nominal rating with ±5% window and 0.7% hysteresis, confirmed in Analog Devices' Electrical Characteristics table on page 3 of the datasheet.

Does MAX6754UKZD0+ support manual reset functionality, and what are its timing requirements?

Yes, MAX6754UKZD0+ includes an active-low manual reset (MR) input with internal 26kΩ pullup to VCC. It requires a minimum 4μs pulse width and provides 300ns transient immunity. After MR goes high, RESET remains asserted for the propagation delay tD-MR (300ns), then deasserts - no timeout dependency on MR assertion.

What package type and pin configuration does MAX6754UKZD0+ use, and is it RoHS compliant?

MAX6754UKZD0+ uses a 5-pin SOT23 package (outline 21-0057, land pattern 90-0174) with pinout: 1=VCC, 2=GND, 3=MR, 4=RESET, 5=SET. The "+" suffix confirms lead-free (RoHS-compliant) construction per JEDEC J-STD-609A marking standard.

Can MAX6754UKZD0+ monitor voltages below 1.0V, and what is its minimum operating VCC?

No, MAX6754UKZD0+ cannot monitor voltages below 1.0V. Its absolute minimum VCC is 1.0V, and outputs remain asserted in correct logic state down to that level. However, accurate window detection requires VCC ≥ 1.4V per datasheet Note 2; operation below 1.4V yields undefined threshold accuracy though RESET state remains valid.

How does the SET pin function on MAX6754UKZD0+, and what happens if left unconnected?

On MAX6754UKZD0+, the SET pin must be tied to GND to configure the ±5% window. If left floating, threshold accuracy degrades significantly - the internal bias network becomes unstable, causing UVTH/OVTH shifts beyond specification. Datasheet Figure 5 and Pin Description explicitly require GND connection for Z-suffix parts.