Analog Devices Inc./Maxim Integrated MAX6463XR30+T

Overview

MAX6463XR30+T from Maxim Integrated is a precision ultra-low-power voltage detector with active-low open-drain output, 3.0V nominal trip threshold (VTH− = 3.000V), ±2.5% threshold accuracy over −40°C to +125°C, 1.0µA supply current at 3.6V, and 17µs propagation delay. It monitors system supply rails in battery-powered portable medical devices and cellular handsets where reliable power-fail detection without external components is critical.

For engineers reviewing the MAX6463XR30+T datasheet, MAX6463XR30+T pinout, MAX6463XR30+T application, or MAX6463XR30+T equivalent, key selection criteria include its factory-trimmed 3.0V threshold, SC70-3 package footprint, open-drain output compatibility with mixed-voltage logic interfaces, and guaranteed operation down to 1.2V VCC.

Technical Context

The MAX6463XR30+T implements a precision bandgap reference and comparator with internally trimmed resistor networks to set VTH− = 3.000V (±2.5% over temperature) and VTH+ = 3.135V (5% hysteresis). Its open-drain output requires an external pullup and sinks up to 1.0mA while maintaining VOL ≤ 0.3V at VCC ≥ 1.2V.

Designed for single-supply monitoring, it asserts output low when VCC falls below VTH− and releases only after VCC rises above VTH+, eliminating chatter during slow-rising or noisy supply conditions. No external capacitors or resistors are needed for basic reset or brownout detection functionality.

Key Specifications

Pinout & Package

MAX6463XR30+T is housed in a 3-pin SC70-3 package (2.0mm × 2.1mm × 0.9mm), optimized for space-constrained portable designs. Pin 1 is OUT (open-drain, active-low), Pin 2 is GND, and Pin 3 is VCC (monitored supply input).

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EB30DBVR and APX803S-30SA-7, MAX6463XR30+T uniquely delivers factory-trimmed 5% hysteresis, full automotive-grade temperature range, and open-drain flexibility in a 2.0mm × 2.1mm SC70-3 package-making it optimal for space- and reliability-critical portable systems.

Availability

MAX6463XR30+T is available at Aetrix Electronics and suitable for portable medical sensors, cellular handset power management, and industrial wireless sensor nodes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6463XR30+T 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.

The MAX6461–MAX6466 family was designed specifically for ultra-low-power voltage supervision in battery-critical portable electronics, emphasizing minimal ICC, factory-trimmed thresholds, and robust transient immunity without external components.

FAQ

What is the exact threshold voltage and tolerance of MAX6463XR30+T?

The MAX6463XR30+T has a nominal lower trip threshold (VTH−) of 3.000V with ±2.5% accuracy over the full −40°C to +125°C operating temperature range. At +25°C, VTH− is specified between 2.955V (min) and 3.045V (max); the upper threshold VTH+ is 3.135V (VTH− × 1.05), providing built-in 5% hysteresis. These values are factory-trimmed and do not require external calibration.

Does MAX6463XR30+T require external components to operate?

No, MAX6463XR30+T operates autonomously with no external components required for basic voltage detection. Its precision bandgap reference, comparator, and trimmed resistor network are fully integrated. Only an external pullup resistor is needed on the open-drain OUT pin to establish the logic-high level-no voltage dividers, capacitors, or hysteresis resistors are necessary.

What package type and pinout does MAX6463XR30+T use?

MAX6463XR30+T uses the SC70-3 package (2.0mm × 2.1mm × 0.9mm). Pin 1 is OUT (active-low open-drain), Pin 2 is GND, and Pin 3 is VCC-the same pin serves as both power supply and monitored voltage input. This 3-pin configuration minimizes PCB footprint while supporting direct integration into compact portable designs.

How does the 5% hysteresis in MAX6463XR30+T improve system reliability?

The 5% hysteresis in MAX6463XR30+T creates distinct rising (VTH+ = 3.135V) and falling (VTH− = 3.000V) thresholds, preventing output chatter when VCC lingers near the trip point due to noise, ripple, or slow power-up sequences. This eliminates false resets in noisy environments like motor-driven industrial sensors or RF-intensive cellular handsets-ensuring deterministic behavior without software debouncing.

Can MAX6463XR30+T interface with logic supplies different from its VCC rail?

Yes, MAX6463XR30+T's open-drain OUT pin can interface with logic supplies from 0V to 6V using an external pullup resistor. For example, when VCC = 3.0V (Li-ion), OUT can be pulled to a 1.8V I/O rail-enabling direct connection to low-voltage MCUs without level shifters. The device sinks ≤0.3V when asserted, meeting standard CMOS low-level input requirements across voltage domains.