Analog Devices Inc./Maxim Integrated MAX6462UK29+T

Overview

MAX6462UK29+T from Maxim Integrated is a precision ultra-low-power voltage detector with 2.9V lower trip threshold (VTH−), ±2.5% threshold accuracy over −40°C to +125°C, 17µs propagation delay, and push-pull active-high output in SOT23-5 package. It monitors system supply rails in battery-powered medical devices and portable instrumentation where reliable reset assertion during brownout is critical.

For engineers reviewing the MAX6462UK29+T datasheet, MAX6462UK29+T pinout, MAX6462UK29+T application, or MAX6462UK29+T equivalent, key selection criteria include guaranteed 2.9V detection with 5% hysteresis, sub-2µA supply current at 3.6V, operation down to 1.2V VCC, and full automotive-grade temperature range support without external components.

Technical Context

The MAX6462UK29+T implements a precision bandgap reference and comparator with internally trimmed resistor networks to set VTH− = 2.900V (±2.5%) and VTH+ = 3.031V (±2.5%), delivering fixed 5% hysteresis. Its push-pull active-high output asserts high when VCC falls below VTH− and remains asserted until VCC rises above VTH+.

This device belongs to the MAX6461–MAX6466 family of voltage detectors (not supervisory circuits with timeout), confirmed by its 17µs propagation delay and absence of reset timeout functionality. It operates from 1.2V to 6.0V VCC and draws only 1.0µA typical supply current at 3.6V and +25°C.

Key Specifications

Pinout & Package

SOT23-5 package: 5-pin surface-mount plastic package with exposed pad option; footprint compatible with JEDEC MO-178AB; rated for −40°C to +125°C operation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV803EB29DBVR and TPS3808G33DBVR, the MAX6462UK29+T uniquely delivers factory-set 2.9V detection with 5% hysteresis, push-pull active-high drive, and guaranteed −40°C to +125°C operation - enabling direct interface to 3.3V logic without level translation or timing ambiguity.

Availability

MAX6462UK29+T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, and industrial handheld scanners requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6462UK29+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) designs precision analog and mixed-signal ICs for power management, sensing, and interface applications in industrial, medical, and automotive markets.

The MAX6461–MAX6466 family was engineered specifically for ultra-low-power voltage monitoring in space-constrained, battery-operated systems - eliminating external resistors while maintaining ±2.5% threshold accuracy across extreme temperatures.

FAQ

What is the exact voltage threshold and hysteresis of the MAX6462UK29+T?

The MAX6462UK29+T has a factory-set lower trip threshold (VTH−) of 2.900V ±2.5% over −40°C to +125°C, with upper trip threshold (VTH+) of 3.031V ±2.5%, yielding 5% hysteresis (VTH+ = VTH− × 1.05). This is confirmed in Table 1a and 1b of the datasheet for suffix "29", and applies specifically to the MAX6462UK29+T variant.

Does the MAX6462UK29+T provide a reset timeout function?

No, the MAX6462UK29+T does not include a reset timeout period. It is a voltage detector (not a µP supervisory circuit), as confirmed by its 17µs propagation delay and absence of tRP specification. Only MAX6464–MAX6466 variants offer the 150ms minimum timeout; the MAX6462UK29+T asserts output immediately on threshold breach and releases it immediately upon recovery.

What is the output configuration of the MAX6462UK29+T and how does it interface with logic?

The MAX6462UK29+T features a push-pull active-high output stage. When VCC drops below 2.9V, OUT goes high; when VCC rises above 3.031V, OUT returns low. It drives CMOS inputs directly without external pull-up, sinking up to 9mA at VCC ≥ 4.5V and sourcing 0.8×VCC at 8mA - making it compatible with standard 3.3V or 5V logic families.

Can the MAX6462UK29+T operate with supply voltages below 2.9V?

Yes, the MAX6462UK29+T operates from VCC = 1.2V to 6.0V per Absolute Maximum Ratings and Electrical Characteristics tables. Its internal bandgap and comparator remain functional down to 1.2V, though output sink capability degrades below 1.8V. Detection continues reliably until VCC falls below the 2.9V threshold - the device itself does not require VCC > 2.9V to operate.

Is the MAX6462UK29+T pin-compatible with other packages in the MAX646x family?

No, the MAX6462UK29+T uses the 5-pin SOT23-5 package (pins: 1=OUT, 2=GND, 3=VCC, 4=GND, 5=N.C.), which is not pin-compatible with the 3-pin SC70-3 or SOT23-3 variants. The duplicate GND pin (pin 4) and N.C. pin (pin 5) are unique to the SOT23-5 configuration and require dedicated PCB layout - migration from 3-pin versions necessitates board revision.