Analog Devices Inc./Maxim Integrated MAX16054AZT+T

Overview

MAX16054AZT+T from Maxim Integrated is a pushbutton on/off controller IC with integrated switch debouncing, latched complementary outputs (OUT/OUT), ±15kV ESD-protected input, and undervoltage lockout. It accepts noisy mechanical switch inputs (±25V tolerant), produces clean toggled digital outputs after a factory-fixed 5–99ms debounce delay, and operates from +2.7V to +5.5V over –40°C to +125°C - ideal for portable instrumentation and automotive infotainment power sequencing.

For engineers reviewing the MAX16054AZT+T datasheet, MAX16054AZT+T pinout, MAX16054AZT+T application, or MAX16054AZT+T equivalent, key selection criteria include its latch behavior on IN falling edge only, asynchronous CLEAR functionality, 7µA supply current, ±25V robust input range, and thin SOT23-6 automotive-grade packaging.

Technical Context

The MAX16054AZT+T implements a toggle-on-falling-edge architecture using an internal oscillator, counter, D flip-flop, and T flip-flop to enforce stable state transitions only after ≥50ms (typ) of input stability. Its debounce qualification logic ignores rising edges and changes output exclusively on validated falling edges of the IN signal.

Undervoltage lockout (1.8V–2.4V threshold) forces OUT low during power-up until VCC exceeds the UVLO threshold; the ±25V-tolerant IN pin includes a 63kΩ internal pullup and proprietary ESD structures that survive ±15kV HBM and ±15kV IEC 61000-4-2 air-gap discharge without latchup or functional interruption.

Key Specifications

Pinout & Package

The MAX16054AZT+T is housed in a 6-pin thin SOT23 package (Z6-1 footprint), 2.9mm × 1.6mm × 1.1mm, with exposed pad not connected internally.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar pushbutton on/off controller applications.

Compared with TPS3808G01DBVR and MAX6816EUT+T, the MAX16054AZT+T uniquely integrates toggle latching, UVLO, ±25V input tolerance, and complementary outputs in one thin SOT23 package - making it the only drop-in solution for robust, self-contained pushbutton power control in space-constrained automotive and portable systems.

Availability

MAX16054AZT+T is available at Aetrix Electronics and suitable for portable instrumentation, automotive infotainment, and white goods control panels requiring stable component supply, extended temperature operation, and high-reliability ESD resilience.

Supply support for MAX16054AZT+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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and consumer applications.

The MAX16054AZT+T belongs to Maxim's power-supply supervisory and interface controller product line, designed specifically to replace microcontroller-based power sequencing logic in battery-powered and ESD-sensitive systems.

FAQ

What is the debounce delay of the MAX16054AZT+T, and is it adjustable?

The MAX16054AZT+T features a factory-fixed debounce delay ranging from 5ms to 99ms, with typical value of 50ms across temperature. This delay is not user-adjustable - it is implemented via internal oscillator and counter logic optimized for mechanical switch bounce rejection. The MAX16054AZT+T does not support external capacitor or resistor programming of the debounce time.

Does the MAX16054AZT+T require external components to operate?

No, the MAX16054AZT+T requires zero external components for basic operation: it integrates an internal 63kΩ pullup resistor on the IN pin, oscillator, debounce logic, latch, and UVLO circuitry. Only a 0.1µF ceramic bypass capacitor on VCC to GND is recommended for noise immunity - no timing capacitors, resistors, or external ESD protection devices are needed.

How does the CLEAR input function on the MAX16054AZT+T?

The CLEAR input on the MAX16054AZT+T is an asynchronous active-high signal that forces the internal T flip-flop to reset, driving OUT low and OUT high regardless of the IN state or debounce status. When unused, CLEAR must be connected to GND; leaving it floating may cause unpredictable output behavior due to noise coupling.

What happens to the outputs of the MAX16054AZT+T during power-up?

During power-up, the undervoltage-lockout (UVLO) circuitry holds OUT low and ignores all IN transitions until VCC rises above the UVLO threshold (1.8V–2.4V). This ensures the MAX16054AZT+T starts in a known OFF state, preventing spurious system wake-up or partial power activation before stable supply is established.

Can the MAX16054AZT+T drive a p-channel MOSFET directly for power switching?

Yes, the MAX16054AZT+T's OUT output can directly drive the gate of a p-channel MOSFET in high-side switch configurations. With VOH ≥ VCC – 1.0V (at 0.4mA) and VOL ≤ 0.4V (at 1.6mA), it provides sufficient voltage margin to fully enhance or cut off common logic-level p-MOSFETs. The MAX16054AZT+T datasheet includes a verified "ON/OFF WITH p-CHANNEL MOSFET" reference circuit.