Analog Devices Inc./Maxim Integrated MAX6895AAZT/V+T

Overview

MAX6895AAZT/V+T from Maxim Integrated is an automotive-grade, ultra-small supervisory circuit with adjustable voltage monitoring (0.5V threshold), capacitor-programmable delay, active-high enable input, and active-high push-pull output. It operates from 1.5V to 5.5V supply, draws only 10µA typical supply current, and is fully specified over –40°C to +125°C for power-supply sequencing in automotive ECUs.

For engineers reviewing the MAX6895AAZT/V+T datasheet, MAX6895AAZT/V+T pinout, MAX6895AAZT/V+T application, or MAX6895AAZT/V+T equivalent, this page delivers verified technical context, AEC-Q100-qualified timing behavior, precise IN-to-OUT delay calculation (t_DELAY = C_CDELAY × 4.0×10⁶ + 40µs), and real-world sequencing design guidance for multi-rail systems.

Technical Context

The MAX6895AAZT/V+T implements a fixed 0.5V internal threshold with 5mV hysteresis on the high-impedance IN pin, enabling precise monitoring of voltages down to 0.5V via external resistive dividers. Its ENABLE pin is active-high with logic thresholds of V_IL = 0.4V and V_IH = 1.4V, and it supports both capacitor-adjustable delay (A version) and 150ns propagation delay (P version) - this part is the A variant.

It features a push-pull output referenced to V_CC, delivering VOH ≥ 0.8×V_CC at 500µA source current and VOL ≤ 0.3V at 90µA sink current. The CDELAY pin sources a tightly controlled 250nA (typ) current to charge an external capacitor, establishing a linear, temperature-stable delay from VIN rise to OUT assertion.

Key Specifications

Pinout & Package

MAX6895AAZT/V+T is housed in a 6-pin thin SOT23 package (1.60mm × 2.90mm), RoHS-compliant and optimized for high-density automotive PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6895AAZT/V+T, MAX6897AAZT/V+T adds 28V-tolerant open-drain flexibility at the cost of requiring a pull-up resistor, while MAX6896AAZT/V+T provides active-low control compatibility but inverts both enable and output logic - neither is pin-compatible without schematic revision.

Availability

MAX6895AAZT/V+T is available at Aetrix Electronics and suitable for automotive power sequencing, critical microprocessor reset, and low-voltage battery monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX6895AAZT/V+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 communications applications.

The MAX6895AAZT/V+T belongs to the MAX6895–MAX6899 family of ultra-small, adjustable sequencing/supervisory circuits engineered specifically for AEC-Q100-compliant power-rail monitoring and sequencing in space-constrained automotive electronics.

FAQ

What is the exact function of the CDELAY pin on the MAX6895AAZT/V+T?

The CDELAY pin on the MAX6895AAZT/V+T sources a precision 250nA (typ) current that charges an external capacitor to 1.00V, triggering the output assertion after t_DELAY = C_CDELAY × 4.0×10⁶ + 40µs. This provides deterministic, temperature-stable delay without requiring a microcontroller or external timer - a core feature enabling autonomous power sequencing in the MAX6895AAZT/V+T.

Is the MAX6895AAZT/V+T pin-compatible with other members of the MAX6895–MAX6899 family?

No - while the MAX6895AAZT/V+T shares the same 6-pin thin SOT23 footprint with other family members, its pin functions are specific to the MAX6895 variant: ENABLE (pin 1) is active-high, OUT (pin 4) is active-high push-pull, and IN (pin 3) has fixed 0.5V threshold. Substituting MAX6896AAZT/V+T or MAX6897AAZT/V+T would invert logic polarity or change output type, requiring schematic and firmware updates.

Does the MAX6895AAZT/V+T require an external pull-up resistor on its OUT pin?

No - the MAX6895AAZT/V+T features an active-high push-pull output, meaning it actively drives both high (to V_CC) and low (to GND). Unlike open-drain variants (e.g., MAX6897), it does not require an external pull-up resistor, simplifying board layout and reducing component count in designs using the MAX6895AAZT/V+T.

How does the MAX6895AAZT/V+T achieve AEC-Q100 qualification?

The MAX6895AAZT/V+T achieves AEC-Q100 qualification through device-level stress testing including HTOL (high-temperature operating life), TCT (temperature cycling), and ESD per Rev H requirements - confirmed in the official Maxim datasheet ordering table which explicitly lists "MAX6895AAZT/V+T" under AEC-Q100-qualified parts. This qualification validates its reliability for automotive under-hood and chassis applications.

Can the MAX6895AAZT/V+T monitor a 1.2V rail directly?

Yes - the MAX6895AAZT/V+T monitors any rail ≥0.5V using an external resistive divider. For a 1.2V rail, set R2 = 1MΩ and calculate R1 = R2 × (1.2V / 0.5V − 1) ≈ 1.4MΩ. With ±15nA input leakage, the divider error remains negligible, enabling accurate 1.2V supervision without additional components - a key capability of the MAX6895AAZT/V+T.