Analog Devices Inc./Maxim Integrated MAX6465XR17+T

Overview

MAX6465XR17+T from Maxim Integrated is a micropower supervisory circuit with active-high push-pull output, 1.700V lower trip threshold (VTH−), ±2.5% threshold accuracy over −40°C to +125°C, 150ms minimum reset timeout, and 1.0µA supply current at 3.6V - used for reliable power-on reset generation in battery-powered medical sensors and portable instrumentation.

For engineers reviewing the MAX6465XR17+T datasheet, MAX6465XR17+T pinout, MAX6465XR17+T application, or MAX6465XR17+T equivalent, key selection criteria include guaranteed reset assertion duration, ultra-low quiescent current across full temperature range, factory-trimmed voltage threshold stability, and compatibility with 3-pin SC70-3 footprint for space-constrained PCB layouts.

Technical Context

The MAX6465XR17+T implements a precision bandgap reference and comparator with internally trimmed resistor networks to set VTH− = 1.700V (±2.5%) and VTH+ = VTH− × 1.05 = 1.785V. It asserts its active-high push-pull output when VCC falls below VTH− and holds it asserted for ≥150ms after VCC rises above VTH+, ensuring robust reset timing independent of supply ramp rate.

This device uses internal 5% hysteresis to prevent output chatter during slow or noisy supply transitions and features immunity to short VCC transients - validated up to 20µs duration for 100mV overdrive - making it suitable for noisy DC/DC converter outputs and Li+-battery systems where brownout recovery must be deterministic.

Key Specifications

Pinout & Package

MAX6465XR17+T is housed in a 3-pin SC70-3 package (2.0mm × 2.1mm × 0.9mm), optimized for high-density portable designs. Pin 1 = OUT (active-high push-pull), Pin 2 = GND, Pin 3 = VCC. No NC or auxiliary pins - minimal footprint with full supervisory functionality.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar µP supervisory applications.

Compared with MAX6465UR17+T, the MAX6465XR17+T offers identical performance in a smaller SC70-3 package ideal for ultra-compact wearables; versus TPS3808G17DBVR, it delivers lower ICC, push-pull drive, and tighter timeout control - critical for battery-sensitive, space-constrained µP reset applications.

Availability

MAX6465XR17+T is available at Aetrix Electronics and suitable for portable medical devices, battery-powered data loggers, and industrial handheld scanners requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.

Supply support for MAX6465XR17+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 - emphasizing low power, high reliability, and small form factor.

The MAX6461–MAX6466 family targets ultra-low-power supervisory needs in battery-critical systems, delivering factory-trimmed voltage detection and deterministic reset timing without external components.

FAQ

What is the exact lower voltage threshold (VTH−) of the MAX6465XR17+T?

The MAX6465XR17+T has a nominal lower trip threshold of 1.700V at +25°C, with guaranteed tolerance of ±2.5% across the full −40°C to +125°C operating range. This value is factory-trimmed and documented in Table 1a of the MAX6461–MAX6466 datasheet; the "17" suffix explicitly denotes the 1.700V option.

Does the MAX6465XR17+T require an external pull-up resistor on its output?

No - the MAX6465XR17+T features an active-high push-pull output stage, meaning it actively drives both high and low states without needing an external pull-up. This distinguishes it from open-drain variants like MAX6466XR17+T and simplifies interface to most µP RESET inputs.

What is the minimum reset timeout period for the MAX6465XR17+T?

The MAX6465XR17+T guarantees a minimum reset timeout period of 150ms, measured from the moment VCC rises above VTH+ until the OUT pin de-asserts (goes low). This fixed timeout replaces propagation delay as the primary timing parameter and ensures reliable µP initialization across all operating conditions.

Can the MAX6465XR17+T operate from a 1.8V supply?

Yes - the MAX6465XR17+T operates over a VCC range of +1.2V to +6.0V, fully supporting 1.8V systems. Its 1.700V threshold is intentionally set just below 1.8V to provide meaningful undervoltage detection while maintaining margin for supply tolerance and noise.

Is the MAX6465XR17+T pin-compatible with other members of the MAX6461–MAX6466 family?

Yes - all SC70-3 packaged members of the MAX6461–MAX6466 family, including MAX6465XR17+T, share identical pinout (OUT–GND–VCC), allowing direct substitution within the same package variant. However, functional differences (e.g., voltage threshold, output polarity, timeout) must be verified per application requirements.