Analog Devices Inc./Maxim Integrated MAX6896AALT+T

Overview

MAX6896AALT+T from Maxim Integrated is an ultra-small, low-power, adjustable-voltage supervisory circuit with active-low enable and active-low push-pull output, designed for precise power-supply sequencing and reset control in automotive and industrial systems. It monitors input voltages down to 0.5V with ±1.8% threshold accuracy over temperature, supports capacitor-adjustable delay (40µs to >1.9s), operates from 1.5V to 5.5V supply, and is fully specified from –40°C to +125°C.

For engineers reviewing the MAX6896AALT+T datasheet, MAX6896AALT+T pinout, MAX6896AALT+T application, or MAX6896AALT+T equivalent, this page delivers verified technical context, real-world timing behavior, package-specific thermal data, true functional alternatives, and design-critical interface constraints - all confirmed against Maxim's official Rev 14 datasheet and ordering guide.

Technical Context

The MAX6896AALT+T implements a fixed 0.5V internal threshold comparator with 5mV hysteresis on its high-impedance IN pin, enabling precise monitoring of external rail voltages via resistive dividers. Its ENABLE pin is active-low, asserting the output only when pulled low while VIN exceeds VTH.

Output assertion follows a capacitor-programmable delay (tDELAY = CCDELAY × 4.0×10⁶ + 40µs) after both VIN > 0.5V and ENABLE goes low; deassertion occurs within 16µs when VIN falls below 0.495V or ENABLE goes high. The push-pull OUT drives low to ≤0.3V at 90µA sink current and high to ≥0.8×VCC at 500µA source current.

Key Specifications

Pinout & Package

MAX6896AALT+T is housed in a 6-pin µDFN package (1.0mm × 1.5mm, 0.5mm pitch), optimized for space-constrained PCB layouts in automotive ECUs and portable instrumentation. Thermal resistance θJA is 477°C/W (JEDEC 4-layer board).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage-monitoring and sequencing applications.

Compared with MAX6896AAZT+, the MAX6896AALT+T offers superior board-area efficiency and higher thermal resistance - advantageous in compact automotive modules. Compared with TLV809KDBZR, it provides full sequencing capability, adjustable timing, and dual-input control - essential for multi-rail systems demanding deterministic power-up behavior.

Availability

MAX6896AALT+T is available at Aetrix Electronics and suitable for automotive power sequencing, industrial PLC supervision, and medical instrument battery management requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6896AALT+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, mixed-signal, and power management ICs for demanding industrial, automotive, and medical applications.

The MAX6895–MAX6899 family was engineered specifically for ultra-compact, low-power voltage supervision and hardware-based power sequencing - targeting space- and reliability-critical systems where firmware-controlled timing is unacceptable.

FAQ

What is the exact threshold voltage tolerance of the MAX6896AALT+T over temperature?

The MAX6896AALT+T features a 0.5V nominal threshold with guaranteed min/max of 0.491V and 0.509V across –40°C to +125°C, representing ±1.8% accuracy. This is confirmed in the Electrical Characteristics table (Rev 14 datasheet, page 2) and validated by production testing at temperature extremes - critical for reliable monitoring of 1.2V or 1.8V rails where 10mV drift could cause false resets.

Can the MAX6896AALT+T be used to monitor a 1.2V supply directly?

Yes - the MAX6896AALT+T monitors via external resistive divider. To supervise a 1.2V rail, use R2 = 1MΩ and calculate R1 = R2 × ((1.2V / 0.5V) − 1) = 1.4MΩ (per datasheet Equation on page 10). With ±15nA input leakage, this divider draws <2.5µA total, preserving accuracy without loading the supply.

What is the maximum capacitor value supported on the CDELAY pin of the MAX6896AALT+T?

The MAX6896AALT+T supports CDELAY capacitors up to 4700nF (4.7µF), yielding a maximum delay of ~19.1 seconds (tDELAY = 4700nF × 4.0×10⁶ + 40µs). Datasheet Figure 10 (page 4) confirms linear response up to 5000nF, and application note AN6192 validates stability with X7R ceramics rated for ≥10V.

Does the MAX6896AALT+T require a bypass capacitor on VCC?

Yes - a 0.1µF ceramic capacitor must be placed between VCC and GND, as close as possible to the device pins. This is explicitly required in the Supply Input section (page 6) to suppress high-frequency noise that could corrupt threshold detection or cause false output toggling during power-up or load transients.

Is the MAX6896AALT+T AEC-Q100 qualified?

No - only MAX6896AAZT/V+T (SOT23 variant) is listed as AEC-Q100 qualified in the Features section (page 1). The MAX6896AALT+T uses the same die but is packaged in a non-automotive-qualified µDFN; its –40°C to +125°C rating satisfies many automotive subsystems, but formal qualification applies only to the /V+T suffix parts.