Analog Devices Inc./Maxim Integrated MAX6898PALT+T

Overview

MAX6898PALT+T from Maxim Integrated is an ultra-small, low-power, active-low enable / active-low open-drain supervisory circuit with capacitor-adjustable input-to-output delay and 150ns enable-to-output propagation delay. It monitors voltages down to 0.5V via external resistive divider, operates from 1.5V to 5.5V supply, and is fully specified over –40°C to +125°C for automotive-grade power sequencing in multi-rail systems.

For engineers reviewing the MAX6898PALT+T datasheet, MAX6898PALT+T pinout, MAX6898PALT+T application, or MAX6898PALT+T equivalent, this page delivers verified technical context, precise pin functions, real-world sequencing use cases, and validated alternative options for voltage monitoring and reset control in harsh-environment embedded systems.

Technical Context

The MAX6898PALT+T implements a fixed 150ns enable-to-output propagation delay (P-version), unlike A-versions with capacitor-programmable enable delay. Its IN input uses a precise 0.5V threshold with 5mV hysteresis and ±15nA leakage, enabling high-impedance monitoring of sub-1V rails via external resistor dividers.

It features an active-low ENABLE input (VIH = 1.4V, VIL = 0.4V) and active-low open-drain OUT capable of 28V tolerant sinking (ILKG ≤ 1µA at 28V). The CDELAY pin sources 250nA to charge an external capacitor, setting the IN-to-OUT delay per tDELAY = CCDELAY × 4.0×10⁶ + 40µs.

Key Specifications

Pinout & Package

MAX6898PALT+T is housed in a 6-pin µDFN package (1.0mm × 1.5mm, 0.5mm pitch), optimized for space-constrained PCB layouts in portable and automotive modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6896PALT+T and TLV809EC26DBVR, MAX6898PALT+T uniquely combines active-low open-drain output with 150ns enable propagation and capacitor-adjustable input delay-enabling robust, level-shifted, and precisely timed power sequencing in multi-voltage systems where isolation and timing determinism are critical.

Availability

MAX6898PALT+T is available at Aetrix Electronics and suitable for automotive power sequencing, industrial PLC supervision, medical imaging bias control, and telecom hot-swap applications requiring stable component supply across extended temperature and long product lifecycles.

Supply support for MAX6898PALT+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 communications applications.

The MAX6895–MAX6899 family-including MAX6898PALT+T-is engineered for ultra-small, low-power voltage supervision and sequencing in space- and power-constrained systems operating across –40°C to +125°C.

FAQ

What is the exact function of the CDELAY pin on the MAX6898PALT+T?

The CDELAY pin on the MAX6898PALT+T sources a precise 250nA current to charge an external capacitor to 1.0V, determining the time delay between IN rising above 0.5V and OUT asserting low. The delay follows tDELAY = CCDELAY × 4.0×10⁶ + 40µs. This pin does not affect the 150ns ENABLE-to-OUT propagation delay, which is fixed in the P-version. For MAX6898PALT+T, CDELAY only governs input-triggered timing-not enable-triggered timing.

Can the MAX6898PALT+T monitor a 1.2V supply directly?

No-the MAX6898PALT+T has a fixed 0.5V input threshold and must be used with an external resistive divider. To monitor a 1.2V rail, connect R1 and R2 such that V_IN = 1.2V × R2/(R1 + R2) = 0.5V. For example, with R2 = 1MΩ, R1 ≈ 1.4MΩ yields ~0.5V at IN. Input leakage (±15nA) ensures minimal error even with MΩ-level resistors, making 1.2V monitoring accurate and practical using MAX6898PALT+T.

What is the maximum sink current supported by the MAX6898PALT+T open-drain output?

The MAX6898PALT+T open-drain output guarantees VOL ≤ 0.3V at ISINK = 90µA (for VCC ≥ 1.2V), and ≤ 0.4V at ISINK = 1mA (for VCC ≥ 4.5V). While absolute maximum rating allows ±20mA, design practice limits continuous sink current to ≤ 1mA to maintain specified VOL and avoid thermal stress. The 28V tolerance applies to voltage applied to OUT-not current magnitude-and requires appropriate external pullup sizing per application voltage.

Is the MAX6898PALT+T AEC-Q100 qualified?

No-MAX6898PALT+T is not AEC-Q100 qualified. Only specific variants in the MAX6895–MAX6899 family carry AEC-Q100 qualification: MAX6895AAZT/V+T, MAX6896AAZT/V+T, and MAX6897AAZT/V+. MAX6898PALT+T is rated for –40°C to +125°C operation and meets all electrical specifications across that range, but lacks formal automotive qualification documentation and test reports required for AEC-Q100 compliance.

How does the ENABLE pin behavior differ between MAX6898PALT+T and MAX6898AALT+T?

Both MAX6898PALT+T and MAX6898AALT+T feature active-low ENABLE, but their timing responses differ fundamentally: MAX6898PALT+T asserts OUT within 150ns after ENABLE goes low, regardless of CDELAY; MAX6898AALT+T delays OUT assertion by the full CDELAY-programmed period after ENABLE goes low. Thus, MAX6898PALT+T provides fast, deterministic enable control, while MAX6898AALT+T offers programmable enable delay-making MAX6898PALT+T preferable for tight-timing synchronization and MAX6898AALT+T for variable-delay staging.