Analog Devices Inc./Maxim Integrated MAX6462XR29+T

Overview

MAX6462XR29+T from Maxim Integrated is a precision ultra-low-power voltage detector IC designed for battery and power-supply monitoring in space-constrained portable systems. It features a factory-set 2.90V lower trip threshold (VTH−), ±2.5% threshold accuracy over −40°C to +125°C, 1.0µA supply current at 3.6V, and 17µs propagation delay. It operates in SC70-3 package and asserts active-high push-pull output when VCC falls below VTH−.

For engineers reviewing the MAX6462XR29+T datasheet, MAX6462XR29+T pinout, MAX6462XR29+T application, or MAX6462XR29+T equivalent, key selection criteria include threshold accuracy across temperature, ultra-low quiescent current for battery longevity, hysteresis-enabled noise immunity, and compatibility with 3-pin SC70 footprint in harsh industrial environments.

Technical Context

The MAX6462XR29+T implements a precision bandgap reference and comparator-based detection architecture with internally trimmed resistor networks. Its fixed 2.90V VTH− threshold (±2.5% over −40°C to +125°C) and 5% internal hysteresis (VTH+ = VTH− × 1.05 ≈ 3.045V) eliminate external calibration components. The device uses BiCMOS process technology and integrates no external timing capacitors.

As a member of the MAX6461–MAX6466 family, it belongs specifically to the voltage detector subgroup (not µP supervisory), distinguishing it from MAX6464–MAX6466 variants by its 17µs propagation delay and absence of reset timeout functionality. Its active-high push-pull output drives directly into CMOS logic without pull-up resistors.

Key Specifications

Pinout & Package

MAX6462XR29+T is housed in a 3-pin SC70-3 package (2.0mm × 2.1mm, 0.5mm pitch), optimized for high-density PCB layouts in portable and battery-powered devices.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EB29DBZR and MAX6315US29D3+T, the MAX6462XR29+T uniquely delivers factory-trimmed 2.90V detection with integrated 5% hysteresis and active-high push-pull drive in SC70-3 - enabling drop-in replacement in noise-sensitive, space-constrained designs without layout or firmware changes.

Availability

MAX6462XR29+T is available at Aetrix Electronics and suitable for battery voltage monitoring, power-rail sequencing control, and noise-immune microcontroller reset applications requiring stable component supply across automotive, industrial, and portable medical product lifecycles.

Supply support for MAX6462XR29+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 analog and mixed-signal ICs for power management, sensing, and interface applications.

The MAX6461–MAX6466 family was engineered for ultra-low-power voltage supervision in portable and battery-operated systems where size, current consumption, and temperature stability are critical design constraints.

FAQ

What is the exact threshold voltage of MAX6462XR29+T and how does it vary with temperature?

The MAX6462XR29+T has a nominal lower trip threshold (VTH−) of 2.900V at +25°C, with guaranteed tolerance of ±2.5% across −40°C to +125°C. Per Table 1a, its VTH− ranges from 2.828V (min) to 2.973V (max) over temperature. The upper threshold VTH+ is derived as VTH− × 1.05, resulting in approximately 2.969V to 3.122V. This tight specification eliminates need for field calibration in battery monitoring systems.

Does MAX6462XR29+T include a reset timeout function like some other supervisory ICs?

No, MAX6462XR29+T does not include a reset timeout function. It is a pure voltage detector (not a µP supervisory circuit), as confirmed by its 17µs propagation delay specification and absence of tRP parameter in its electrical characteristics table. Timeout functionality is exclusive to MAX6464–MAX6466 variants. MAX6462XR29+T asserts output immediately upon VCC crossing VTH− and releases it immediately upon crossing VTH+, with no built-in delay.

What is the output configuration of MAX6462XR29+T and how does it interface with common logic families?

MAX6462XR29+T features an active-high push-pull output stage. When VCC ≥ VTH+, OUT is driven to VOH ≥ 0.8×VCC (e.g., ≥2.32V at VCC=2.9V); when VCC ≤ VTH−, OUT is driven to VOL ≤ 0.3V. This allows direct interfacing with 1.8V, 2.5V, 3.3V, and 5V CMOS inputs without pull-up resistors. The output can sink up to 9mA and source up to 8mA, supporting fan-out to multiple gates.

Can MAX6462XR29+T operate reliably below 1.6V supply voltage?

MAX6462XR29+T is specified to operate down to VCC = +1.2V per Absolute Maximum Ratings and Electrical Characteristics tables. However, its 2.90V threshold means it will assert output continuously when VCC < 2.828V (minimum VTH−). Below ~1.0V, output sinking capability degrades; for guaranteed valid low-state down to 0V, a 100kΩ pull-down resistor is recommended per Applications Information section.

Is MAX6462XR29+T pin-compatible with other members of the MAX6461–MAX6466 family in SC70-3 package?

Yes, all SC70-3 variants in the MAX6461–MAX6466 family - including MAX6461XR29+T (active-low push-pull), MAX6462XR29+T (active-high push-pull), and MAX6463XR29+T (active-low open-drain) - share identical SC70-3 pinout (OUT, GND, VCC). This enables hardware reuse across detection polarity and output stage requirements without PCB redesign.