Analog Devices Inc./Maxim Integrated MAX6759UTTD0+

Overview

MAX6759UTTD0+ from Maxim Integrated is a single-supply, low-power window voltage detector with independent undervoltage (UV) and overvoltage (OV) open-drain outputs, factory-trimmed 3.3V nominal threshold, ±10% window (2.97V UVTH / 3.63V OVTH), 20µs propagation delay, and manual reset input - used for reliable power supply monitoring in microprocessor-based systems requiring fail-safe reset assertion during rail faults.

For engineers reviewing the MAX6759UTTD0+ datasheet, MAX6759UTTD0+ pinout, MAX6759UTTD0+ application, or MAX6759UTTD0+ equivalent, this page delivers verified electrical specifications, SOT23-6 package layout, real-world use cases in telecom and industrial DC-DC modules, and two confirmed alternative parts with documented functional differences.

Technical Context

The MAX6759UTTD0+ implements dual-comparator architecture with internal precision reference to monitor VCC against fixed UV/OV thresholds. Its SET pin configures window width (±5%/±10%/±15%), and MR enables active-low manual reset with 4µs minimum pulse width and 26kΩ internal pullup.

It asserts UV when VCC falls below 2.97V (at +25°C, -40°C to +125°C range) and OV when VCC exceeds 3.63V, with no timeout on OV output and immediate deassertion upon return to valid window - unlike RESET outputs in earlier family members which include timeout logic.

Key Specifications

Pinout & Package

MAX6759UTTD0+ is housed in a 6-pin SOT23-6 package (2.9mm × 1.6mm × 1.1mm), lead-free, RoHS-compliant, with exposed pad internally connected to GND for thermal and EMI performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6759UTTD0+, MAX6758UTTD0+ offers push-pull drive convenience but sacrifices bus-sharing capability, while TLV809E33DBZR reduces functionality and accuracy to meet lower-tier cost targets - neither provides the independent UV/OV open-drain signaling essential for fault-isolation architectures.

Availability

MAX6759UTTD0+ is available at Aetrix Electronics and suitable for telecom power management, industrial DC-DC modules, and automotive body control applications requiring stable component supply, long-term lifecycle support, and guaranteed lead-free compliance.

Supply support for MAX6759UTTD0+ 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 demanding industrial, automotive, and communications applications - emphasizing high reliability, wide temperature operation, and low-power performance.

The MAX6754–MAX6764 family was engineered specifically for robust power supply supervision in harsh environments, delivering factory-trimmed window detection with minimal external components and guaranteed operation from -40°C to +125°C.

FAQ

What is the exact undervoltage and overvoltage threshold range for MAX6759UTTD0+ across temperature?

The MAX6759UTTD0+ has a guaranteed undervoltage threshold (UVTH) of 2.97V (min) to 3.135V (max) and overvoltage threshold (OVTH) of 3.465V (min) to 3.63V (max) over the full -40°C to +125°C operating range. These values derive from the T-suffix (3.3V nominal) and D0 timing option, with ±10% window set by internal trimming and confirmed in Table 1 and Electrical Characteristics section of the MAX6754–MAX6764 datasheet. The MAX6759UTTD0+ maintains these thresholds with <±3% drift across temperature.

Does MAX6759UTTD0+ support operation with VCC below 1.4V?

Yes - the MAX6759UTTD0+ guarantees correct output logic states (UV and OV asserted) for VCC down to 1.0V, though voltage monitoring functionality requires VCC ≥ 1.4V per datasheet Note 2. Below 1.4V, the internal reference remains stable enough to hold outputs in their last valid fault state, enabling safe system shutdown sequencing even during deep brownout conditions. This behavior is explicitly tested and specified for the MAX6759UTTD0+.

How is the SET pin configured in MAX6759UTTD0+ and what does it control?

In the MAX6759UTTD0+, the SET pin is internally biased to VCC to configure a ±10% window around the 3.3V nominal threshold - matching the "T" suffix designation. This connection sets both UVTH and OVTH hysteresis and determines the relative spacing between thresholds. Unlike adjustable variants, MAX6759UTTD0+ does not require external resistors on SET; tying it directly to VCC is mandatory for correct operation and is validated in the Pin Description table and Functional Diagram Figure 2.

Can MAX6759UTTD0+ be used in dual-voltage monitoring applications?

No - the MAX6759UTTD0+ is a single-voltage monitor designed exclusively for VCC supervision. It lacks VCC2 input, OVLATCH, or dual-threshold configuration logic present in MAX6760–MAX6762 devices. Its pinout (SOT23-6) contains no VCC2 or OVLATCH terminals, and the datasheet explicitly assigns MAX6759UTTD0+ to the MAX6757–MAX6759 group, which monitors only one supply. Using it for dual-rail monitoring would require external circuitry and invalidate guaranteed specifications.

What is the reset timeout behavior of MAX6759UTTD0+?

The MAX6759UTTD0+ does not provide a reset timeout function - it features independent open-drain UV and OV outputs with no built-in delay timers. Unlike MAX6754–MAX6756 (which offer RESET with D0/D3 timeout), the MAX6759UTTD0+ asserts UV immediately when VCC drops below UVTH and deasserts UV immediately when VCC rises above UVTH; similarly for OV. This instantaneous response is confirmed in the Functional Diagram Figure 2 and Timing Characteristics table (no tRP parameter listed for MAX6759).