Analog Devices Inc./Maxim Integrated MAX969ESE+T

Overview

MAX969ESE+T from Maxim Integrated is a quad micropower comparator with rail-to-rail inputs/outputs, 1.235V ±1.5% internal reference, programmable hysteresis, and open-drain outputs capable of swinging beyond VCC to +6V. It operates from +1.6V to +5.5V single supply, draws 14–22 µA total supply current (3.5–5.5 µA per comparator), and is specified for -40°C to +85°C. It is used in 2-cell battery-powered threshold detection and window-comparator circuits.

For engineers reviewing the MAX969ESE+T datasheet, MAX969ESE+T pinout, MAX969ESE+T application, or MAX969ESE+T equivalent, key selection factors include its quad-channel ultra-low-power operation, integrated precision reference, hysteresis programmability via HYST pin, rail-to-rail input common-mode range down to -0.25V, and compatibility with multivoltage level-shifting architectures.

Technical Context

The MAX969ESE+T implements four independent comparators sharing a common internal 1.235V bandgap reference and a single HYST pin that programs identical hysteresis across all channels. Its input stage supports rail-to-rail common-mode voltage from -0.25V to (VCC – 0.25V), enabling direct sensing near ground or supply rails. The open-drain outputs tolerate continuous short-circuit to GND or VCC and support pull-up voltages up to +6V independent of VCC.

Propagation delay is 10 µs (50 mV overdrive) with typical output low voltage of 0.2 V at 100 µA sink current (1.6V < VCC < 2.7V). Input offset voltage is 4.0 mV (µMAX, 0°C to +85°C) and 6.0 mV over full temperature range, while input bias current is ±5 nA over common-mode range and ±50 nA over full range.

Key Specifications

Pinout & Package

MAX969ESE+T is housed in a 16-pin narrow SO package (S16-1), 3.9mm × 9.9mm body, 1.27mm pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TLV3704IPW and LM339AVQDR, MAX969ESE+T uniquely combines quad-channel micropower operation, integrated precision reference, programmable hysteresis, and true rail-to-rail input capability in a single 16-pin SO package-making it optimal for space- and energy-constrained 2-cell battery systems requiring multi-threshold detection without external components.

Availability

MAX969ESE+T is available at Aetrix Electronics and suitable for 2-cell battery-powered systems, precision threshold detectors, and multivoltage level-shifting applications requiring stable component supply and long-term production continuity.

Supply support for MAX969ESE+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, medical, and consumer markets.

The MAX965–MAX970 family was engineered specifically for ultra-low-voltage, micropower comparator applications in battery-operated equipment-emphasizing rail-to-rail operation, integrated references, and hysteresis programmability to minimize external components.

FAQ

What is the operating supply voltage range for MAX969ESE+T?

The MAX969ESE+T operates from a single supply of +1.6V to +5.5V. This range supports direct connection to 2-cell alkaline/NiMH batteries (nominal 3.0V, discharge down to ~2.0V) and single Li-ion cells (2.7–4.2V). Operation below 1.6V degrades reference accuracy and output sink capability, though comparator functionality may persist down to ~1.0V in some conditions.

Does MAX969ESE+T include an internal voltage reference?

Yes, MAX969ESE+T integrates a precision 1.235V ±1.5% bandgap reference (over 0°C to +85°C) on the REF pin. It can source up to 50 µA and is specified for stability across the full supply range (+1.6V to +5.5V). A 0.1 µF ceramic capacitor is recommended between REF and GND to reduce output noise to ~1.0 mV peak-to-peak.

How is hysteresis programmed on MAX969ESE+T?

Hysteresis on MAX969ESE+T is programmed using the HYST pin, which accepts voltages from (REF – 50 mV) to REF. Connecting external resistors between REF, HYST, and GND sets a hysteresis band from ±1 mV to ±50 mV, applied identically to all four comparators. If unused, HYST must be tied directly to REF to enable default internal hysteresis.

What package type is used for MAX969ESE+T?

MAX969ESE+T uses a 16-pin narrow SO package (S16-1), measuring 3.9 mm × 9.9 mm with 1.27 mm lead pitch. It is RoHS-compliant and pin-compatible with industry-standard 16-pin SO footprints. This package differs from the QSOP variant (MAX969EEE) and supports automated assembly with standard reflow profiles.

Can MAX969ESE+T outputs drive 5V logic when powered from a 3.3V supply?

Yes, MAX969ESE+T open-drain outputs are 6V-tolerant and can be pulled up to 5V even when VCC = 3.3V. This enables seamless level translation between 3.3V domains (e.g., MCU I/O) and 5V peripherals (e.g., legacy UART or GPIO). The output low voltage remains ≤0.4 V at 500 µA sink current, ensuring valid TTL/CMOS low-level recognition.