Analog Devices Inc./Maxim Integrated MAX9065AEWS+T

Overview

MAX9065AEWS+T from Maxim Integrated is a nanoPower window comparator IC designed for battery voltage monitoring in space-constrained portable electronics. It features 0.6V/1.2V threshold voltages, 1μA max supply current, -40°C to +85°C operation, and a 4-bump WLP package with 0.5mm pitch. It serves as a precision voltage window detector in lithium-ion battery protection circuits.

For engineers reviewing the MAX9065AEWS+T datasheet, MAX9065AEWS+T pinout, MAX9065AEWS+T application, or MAX9065AEWS+T equivalent, this page delivers verified electrical parameters, validated WLP pin mapping, confirmed 0.6V/1.2V trip-point behavior, and real-world selection guidance for ultra-low-power voltage supervision.

Technical Context

The MAX9065AEWS+T implements a dual-comparator architecture with an internal 200mV reference and programmable resistor-divider network. Its digital logic performs AND-gating of both comparator outputs to generate a push-pull window output state.

It operates from 1.0V to 5.5V supply, supports input common-mode range from -0.3V to +5.5V, and achieves 25µs propagation delay with ±100mV overdrive. Hysteresis is fixed at ±1% of threshold voltage, enabling stable switching without external components.

Key Specifications

Pinout & Package

MAX9065AEWS+T uses a 4-bump Wafer-Level Package (WLP), 0.5mm pitch, 1.0mm × 1.0mm footprint, RoHS-compliant, top-mark "AGO". Bump configuration: A1 = OUT, A2 = IN, B1 = VCC, B2 = GND.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar window comparator applications.

Compared with TLV7032IDR and MAX9064AEBS+T, the MAX9065AEWS+T uniquely combines true nanoPower operation, factory-trimmed 0.6V/1.2V thresholds, built-in hysteresis, and WLP packaging - making it optimal for next-generation wearables and ultra-miniaturized battery management.

Availability

MAX9065AEWS+T is available at Aetrix Electronics and suitable for portable medical devices, battery-powered IoT sensors, and compact consumer electronics requiring stable component supply and long-term lifecycle support.

Supply support for MAX9065AEWS+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 power, sensing, and interface applications in industrial, automotive, and portable markets.

The MAX9065 family targets ultra-low-power voltage supervision in space-constrained battery-operated systems, emphasizing nanoPower consumption, integrated hysteresis, and minimal external component count.

FAQ

What is the exact threshold voltage accuracy of MAX9065AEWS+T over temperature?

The MAX9065AEWS+T guarantees lower threshold voltage (LTV) of 0.566V to 0.634V and upper threshold voltage (UTV) of 1.132V to 1.268V across -40°C to +85°C. These ranges reflect full-temperature min/max specifications-not just room-temperature typicals-ensuring robust battery monitoring under all operating conditions. The MAX9065AEWS+T maintains this accuracy without calibration or external components.

Does MAX9065AEWS+T require external resistors to set its 0.6V/1.2V thresholds?

No. The MAX9065AEWS+T integrates a precision resistor-divider network and 200mV internal reference to deliver factory-trimmed 0.6V and 1.2V thresholds. No external resistors, dividers, or trimming components are needed-reducing BOM count, PCB area, and calibration effort. This is a core differentiator of the MAX9065AEWS+T versus general-purpose comparators.

Can MAX9065AEWS+T operate from a 1.0V supply while maintaining full functionality?

Yes. The MAX9065AEWS+T is fully specified down to VCC = 1.0V, including guaranteed propagation delay, threshold accuracy, and output drive capability. At 1.0V, supply current remains ≤1.0µA, and output high voltage reaches VCC – 0.2V (≥0.8V), enabling direct interfacing with 1.0V–1.2V logic families. This makes the MAX9065AEWS+T uniquely suited for emerging ultra-low-voltage systems.

How does the push-pull output of MAX9065AEWS+T simplify system design compared to open-drain alternatives?

The MAX9065AEWS+T push-pull output actively drives both high and low states without requiring an external pull-up resistor. This eliminates I²R losses, reduces standby current, removes timing uncertainty from RC time constants, and simplifies GPIO interfacing-especially critical in battery-critical applications. Unlike open-drain comparators, the MAX9065AEWS+T ensures deterministic rise/fall times (30ns/14ns) independent of external components.

Is MAX9065AEWS+T pin-compatible with other variants in the MAX9065 family?

No. The MAX9065AEWS+T uses a 4-bump WLP (W41E1+1) package with 0.5mm pitch and top-mark "AGO", whereas MAX9065EBS+ uses 4-bump UCSP (B4+1) with top-mark "AGC", and MAX9065EUK+ uses 5-pin SOT23. While electrically identical in threshold behavior, mechanical footprints differ-requiring separate land patterns. The MAX9065AEWS+T is not a drop-in replacement for those variants without PCB redesign.