Analog Devices Inc./Maxim Integrated MAX6897PALT+T

Overview

The MAX6897PALT+T from Maxim Integrated is an ultra-small, low-power voltage supervisory circuit with adjustable threshold monitoring and fixed 150ns enable-to-output propagation delay. It features an active-high enable input, active-high open-drain output (28V-tolerant), 0.5V internal threshold with 1.8% accuracy over temperature, and operates from 1.5V to 5.5V supply across –40°C to +125°C. It is used in power-supply sequencing for multi-rail systems requiring precise timing control and rail-dependent enable coordination.

For engineers reviewing the MAX6897PALT+T datasheet, MAX6897PALT+T pinout, MAX6897PALT+T application, or MAX6897PALT+T equivalent, this page delivers verified functional identity, confirmed µDFN-6 package mapping, validated terminal roles, exact timing behavior (150ns tPROPP), and real-world sequencing use cases - all extracted from Maxim's official datasheet Rev 14 (9/18).

Technical Context

The MAX6897PALT+T implements a high-impedance monitor input (IN) with fixed 0.5V rising threshold and 5mV hysteresis, enabling precise external voltage monitoring via resistive dividers. Its active-high ENABLE input controls output assertion independently of IN state, with guaranteed 150ns propagation delay (tPROPP) from enable assertion to OUT transition - distinct from capacitor-adjustable A-versions.

This P-version device uses an open-drain output referenced to external pull-up (up to 28V), supporting level-shifting and wired-OR configurations. It draws only 10µA typical supply current and maintains full specification across automotive-grade temperature range (–40°C to +125°C), with UVLO protection at 1.20V VCC falling.

Key Specifications

Pinout & Package

MAX6897PALT+T is housed in a 6-pin ultra-small µDFN package (1.0mm × 1.5mm, 0.5mm pitch), optimized for thermal performance (θJA = 477°C/W) and board area efficiency.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6897AALT+T, the MAX6897PALT+T removes capacitor dependency for faster design validation and tighter timing control; compared with TLV809EADBZR, it adds active enable, adjustable threshold, and open-drain flexibility essential for complex power architectures.

Availability

MAX6897PALT+T is available at Aetrix Electronics and suitable for automotive body control modules, medical sensor subsystems, FPGA power sequencing, and industrial PLC I/O power management requiring stable component supply and long-term lifecycle support.

Supply support for MAX6897PALT+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 demanding industrial, automotive, and medical applications.

The MAX6895–MAX6899 family was engineered specifically for ultra-compact, low-power voltage supervision and multi-rail sequencing in space- and power-constrained systems - emphasizing timing determinism, wide supply range, and automotive-grade reliability.

FAQ

What is the function of the CDELAY pin on the MAX6897PALT+T?

The CDELAY pin on the MAX6897PALT+T is internally bypassed and unused. Unlike the A-versions, the P-version implements a fixed 150ns enable-to-output propagation delay (tPROPP), eliminating the need for an external timing capacitor. This simplifies layout, reduces BOM count, and improves timing consistency across temperature and voltage variations - a key differentiator of the MAX6897PALT+T within the MAX6895–MAX6899 family.

Does the MAX6897PALT+T require an external pull-up resistor on the OUT pin?

Yes, the MAX6897PALT+T features an active-high open-drain output, so an external pull-up resistor is mandatory for proper logic-level generation. The pull-up can be connected to any voltage up to 28V, enabling level-shifting to higher-voltage domains. Typical values range from 10kΩ (for fast rise times) to 100kΩ (for ultra-low current), depending on bus capacitance and required slew rate - as specified in Maxim's application guidance for MAX6897PALT+T.

What is the minimum supply voltage required for guaranteed operation of the MAX6897PALT+T?

The MAX6897PALT+T requires a minimum supply voltage of 1.5V for guaranteed 0.5V threshold accuracy and full specification compliance. Below 1.5V, the internal reference may deviate; below 1.2V (UVLO threshold), the output state becomes indeterminate. For reliable operation across –40°C to +125°C, maintain VCC ≥1.5V and bypass with a 0.1µF ceramic capacitor close to the VCC pin - a requirement explicitly defined in the MAX6897PALT+T datasheet.

Can the MAX6897PALT+T be used in automotive applications?

Yes, the MAX6897PALT+T is qualified per AEC-Q100 Grade 0 (–40°C to +125°C) and is explicitly listed in Maxim's automotive-qualified ordering table. Its 1.8% threshold accuracy over temperature, 10µA supply current, and robust ESD/EMI performance make it suitable for body control modules, infotainment power sequencing, and ADAS domain controllers - provided the PCB layout follows Maxim's recommended grounding and decoupling practices for MAX6897PALT+T.

How does the enable input behavior differ between MAX6897PALT+T and MAX6897AALT+T?

The MAX6897PALT+T uses an active-high ENABLE input with a fixed 150ns propagation delay (tPROPP) from enable assertion to output transition, whereas the MAX6897AALT+T uses the same active-high ENABLE but with a capacitor-adjustable delay (tPROPA). Both share identical pinout, threshold, and open-drain output, but only the P-version guarantees deterministic, component-free timing - a critical distinction for time-critical power sequencing in the MAX6897PALT+T implementation.