Analog Devices Inc./Maxim Integrated MAX16169AALTA+T

Overview

MAX16169AALTA+T from Analog Devices is a nanoPower pushbutton on/off controller and battery freshness seal IC with integrated switch debouncer, latched output, and one-shot interrupt generator. It operates from 1.3V to 5.5V, draws ≤40nA standby current, supports ±60V robust PB_IN input, and delivers 200mA latched output with <30mV drop - enabling direct load power control in disposable low-power electronics.

For engineers reviewing the MAX16169AALTA+T datasheet, MAX16169AALTA+T pinout, MAX16169AALTA+T application, or MAX16169AALTA+T equivalent, this device is selected for ultra-low-quiescent-power system enablement where mechanical switch noise immunity, battery longevity, and ESD-hardened input integrity are critical design requirements.

Technical Context

The MAX16169AALTA+T implements a deterministic timing-based state machine that latches OUT high after a 50ms debounce window (t_DB) at PB_IN and deasserts OUT upon switch closure exceeding 8s (t_SO). Its internal logic ignores transients <50ms and enforces CLR lockout for 2×t_INT (64–256ms) post-assertion to prevent spurious resets.

It features dual-path input protection: clamping diodes handle ±60V continuous overvoltage at PB_IN/PB_IN, while ±40kV HBM ESD structures are validated per JEDEC JS-001. The INT output is open-drain, active-low, and timed to 32ms (short press) or 128ms (long press), providing unambiguous system-level event signaling.

Key Specifications

Pinout & Package

MAX16169AALTA+T is housed in a 2mm × 2mm, 6-pin micro Dual-Flat No-Lead (µDFN) package (package code L622+1C, outline 21-0164), optimized for space-constrained portable and disposable electronics.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX16168AALTA+T and TPL7407LPGEDR, the MAX16169AALTA+T uniquely combines 40nA standby current, hardware-configured 50ms/8s timing, ±40kV ESD-hardened PB_IN, and 200mA latched output - delivering a complete, self-contained power-enable solution with zero firmware overhead.

Availability

MAX16169AALTA+T is available at Aetrix Electronics and suitable for portable medical devices, IoT asset trackers, and handheld consumer electronics requiring stable component supply, long-term shelf-life assurance, and robust mechanical switch interfacing.

Supply support for MAX16169AALTA+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

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, industrial automation, healthcare, and communications markets.

The MAX16169AALTA+T belongs to Analog Devices' nanoPower system-management portfolio, designed specifically for ultra-low-power, battery-sealed, and ESD-critical applications in disposable and portable electronics.

FAQ

What is the debounce time configuration for MAX16169AALTA+T?

The MAX16169AALTA+T is configured with a fixed 50ms debounce time (t_DB) as specified in its ordering information. This value is factory-trimmed and non-adjustable; it ensures reliable rejection of mechanical switch bounce while maintaining responsiveness to intentional short presses. The 50ms timing is validated across the full -40°C to +125°C temperature range and 1.3V–5.5V supply range.

Does MAX16169AALTA+T support active-high or active-low pushbutton inputs?

Yes, MAX16169AALTA+T supports both configurations via its dual-marked PB_IN / PB_IN pin. Internally, PB_IN is pulled up to VCC, enabling direct connection to ground for active-low operation. For active-high use, an external pull-down resistor can be added - the input tolerates voltages up to ±60V and includes ±40kV HBM ESD protection regardless of polarity.

How does the CLR input behave during MAX16169AALTA+T operation?

The CLR input on MAX16169AALTA+T is asynchronous and active-low. When asserted, it forces the latched OUT signal low immediately - even if PB_IN remains active. However, CLR is ignored for 2×t_INT (64–256ms) after OUT assertion begins, preventing accidental reset during the debounce or interrupt window. This lockout ensures deterministic state transitions.

Can MAX16169AALTA+T drive a 200mA load directly without external components?

Yes, MAX16169AALTA+T's OUT pin is rated for 200mA continuous sink/source with less than 30mV voltage drop at V_CC = 3.3V. This allows direct connection to low-power MCUs, sensors, or RF modules without external MOSFETs or drivers. Thermal derating applies above +70°C ambient, but the 2mm × 2mm µDFN package maintains safe junction temperatures under typical 200mA loads.

What is the purpose of the extended interrupt pulse in MAX16169AALTA+T?

The extended 128ms interrupt pulse in MAX16169AALTA+T is triggered only when the PB_IN switch closure exceeds the 8s shutdown period (t_SO). This longer pulse distinguishes intentional long-press shutdown commands from normal ON presses (which generate 32ms INT). It enables firmware to initiate controlled system shutdown, memory save, or secure erase - without requiring additional GPIOs or timing logic.