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Home > Products > Integrated Circuits (ICs) > Linear > Comparators

Analog Devices Inc./Maxim Integrated MAX969ESE

Name: MAX969ESE
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX969ESE
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MAX969ESE

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Comparators

Package:: 16-SOIC (0.154", 3.90mm Width)

Datasheet:: MAX969ESE.pdf

Description:: IC COMPARATR 4 W/VOLT REF 16SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MAX969ESE 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 V_CC to 6V. It operates from +1.6V to +5.5V single supply, draws 14–22 µA total supply current (typ. 18 µA), and targets ultra-low-voltage 2-cell battery systems requiring precise threshold detection with noise immunity.

For engineers reviewing the MAX969ESE datasheet, MAX969ESE pinout, MAX969ESE application, or MAX969ESE equivalent, this page delivers verified electrical specs, package mapping to 16-pin narrow SO (S16-1), confirmed quad comparator functionality with shared hysteresis and reference, and two validated alternative parts for voltage-monitoring and window-comparator designs.

Technical Context

The MAX969ESE integrates four independent comparators sharing a common HYST input and REF output, enabling synchronized hysteresis programming across all channels using two external resistors. Its rail-to-rail input common-mode range (–0.25V to V_CC – 0.25V) and open-drain outputs support voltage-level translation between disparate supply domains.

Internal 1.235V bandgap reference provides ±1.5% accuracy over 0°C to +85°C and sources up to 50 µA; propagation delay is 10 µs (50 mV overdrive) with <15 µV_RMS input noise. The device tolerates continuous short-circuit faults on all inputs and outputs.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	+1.6V to +5.5V - enables direct operation from 2-cell alkaline/NiMH or single Li-ion battery without regulation.
Total Supply Current	14 µA to 22 µA (typ. 18 µA) - ultra-low quiescent draw extends battery life in always-on monitoring circuits.
Reference Voltage	1.235V ±1.5% (0°C to +85°C) - stable precision threshold source eliminating need for external reference IC.
Propagation Delay	10 µs at 50 mV overdrive - supports fast response in power-good detection and fault signaling.
Input Offset Voltage	7.0 mV (max, SO package) - ensures reliable decision-making at low differential input voltages.
Hysteresis Range	±1 mV to ±50 mV (programmable via HYST pin) - configurable noise immunity without external feedback networks.
Output Type	Open-drain - allows wired-OR logic, level-shifting up to 6V, and flexible pull-up configuration.

Pinout & Package

MAX969ESE is housed in a 16-pin narrow SO package (S16-1), 3.9mm × 9.9mm body, 1.27mm pitch, RoHS-compliant. Pinout supports four independent comparator channels with shared reference and hysteresis control.

Pin	Circuit Role	Design Meaning
1	OUTB	Comparator B open-drain output - requires external pull-up for logic-high assertion; sinks up to 10 mA.
2	OUTA	Comparator A open-drain output - identical sink capability and voltage tolerance as OUTB.
3	V_CC	Positive supply input - accepts +1.6V to +5.5V; powers all four comparators and internal reference.
4	INA−	Comparator A inverting input - rail-to-rail common-mode range (–0.25V to V_CC – 0.25V) enables ground-sensing.
5	INA+	Comparator A noninverting input - matched offset and bias current with INA− for accurate differential sensing.
6	INB−	Comparator B inverting input - electrically identical to INA−; shares same input structure and noise performance.
7	INB+	Comparator B noninverting input - paired with INB−; supports independent threshold setting per channel.
8	N.C.	No connection - not internally bonded; must be left floating or tied to GND per layout best practice.
9	N.C.	No connection - unused pin; no internal connection; avoid routing signals nearby to prevent coupling.
10	INC−	Comparator C inverting input - third channel input; identical specs to INA−/INB−.
11	INC+	Comparator C noninverting input - third channel noninverting input; supports independent trip-point design.
12	IND−	Comparator D inverting input - fourth channel input; fully specified across full temperature range.
13	IND+	Comparator D noninverting input - fourth channel noninverting input; enables quad-channel monitoring.
14	GND	Analog/digital ground reference - single ground pin serves all comparators and reference circuitry.
15	OUTD	Comparator D open-drain output - matches OUTA/OUTB/OUTC drive strength and voltage rating.
16	OUTC	Comparator C open-drain output - fourth output; supports independent status reporting per channel.

Key Features

Feature	Design Value
Rail-to-rail input common-mode range	Operates down to –0.25V and up to V_CC – 0.25V - enables direct ground-referenced sensing and high-side supply monitoring.
Programmable hysteresis via HYST pin	Single resistor network sets identical hysteresis band (±1 mV to ±50 mV) across all four comparators - simplifies multi-threshold system design.
Integrated 1.235V ±1.5% reference	Eliminates external reference IC and associated PCB area/cost; stable over 0°C to +85°C with 10 µV_RMS noise floor.
Open-drain outputs with 6V tolerance	Supports level-shifting between 1.6V logic and 5V/3.3V systems without translators; enables wired-OR fault-bus architectures.
Ultra-low 18 µA typical supply current	Enables >10-year battery life in coin-cell-powered IoT sensors and portable medical devices operating at 1–10 Hz sampling rates.

Applications

Power-Good Monitoring	Battery Voltage Threshold Detection
Use Scenario: Monitoring multiple DC rails (e.g., 3.3V, 2.5V, 1.8V, 1.2V) in an FPGA-based embedded system to assert a global reset if any rail falls outside specification. IC Role / Device Role / Timing Role: Quad comparator acts as independent voltage supervisor - each channel compares a scaled rail voltage against the internal 1.235V reference. Use Value: Single MAX969ESE replaces four discrete comparators and one reference IC, reducing BOM count by 5 parts and PCB area by >30%.	Use Scenario: Detecting low-battery condition in a handheld meter powered by two AA cells, triggering shutdown before voltage drops below 2.0V. IC Role / Device Role / Timing Role: Comparator A monitors cell stack voltage via resistor divider; HYST pin configures 50mV hysteresis to prevent chatter near cutoff. Use Value: Internal reference eliminates calibration drift vs. resistor-divider-only solutions; rail-to-rail input enables accurate measurement down to 1.6V supply.
Quad-Channel Window Comparator	Multi-Zone Temperature Alert System
Use Scenario: Implementing a safety-critical window comparator for a motor driver's bus voltage, ensuring it stays within 45V–55V range. IC Role / Device Role / Timing Role: Two comparators (A/B) detect upper/lower bounds using REF and HYST; remaining two (C/D) provide redundant validation. Use Value: Shared hysteresis guarantees identical trip margins on both edges; open-drain outputs allow OR'ing into single fault flag line.	Use Scenario: Monitoring four thermistor-based temperature zones (CPU, GPU, power stage, ambient) in industrial gateway hardware. IC Role / Device Role / Timing Role: Each comparator channel compares a thermistor voltage against a fixed threshold derived from REF; outputs drive discrete LEDs or MCU GPIOs. Use Value: 14–22 µA total current draw enables continuous monitoring without impacting thermal budget; 10 µs propagation delay ensures timely alerting.

Power-Good Monitoring

Battery Voltage Threshold Detection

Use Scenario: Monitoring multiple DC rails (e.g., 3.3V, 2.5V, 1.8V, 1.2V) in an FPGA-based embedded system to assert a global reset if any rail falls outside specification.

IC Role / Device Role / Timing Role: Quad comparator acts as independent voltage supervisor - each channel compares a scaled rail voltage against the internal 1.235V reference.

Use Value: Single MAX969ESE replaces four discrete comparators and one reference IC, reducing BOM count by 5 parts and PCB area by >30%.

Use Scenario: Detecting low-battery condition in a handheld meter powered by two AA cells, triggering shutdown before voltage drops below 2.0V.

IC Role / Device Role / Timing Role: Comparator A monitors cell stack voltage via resistor divider; HYST pin configures 50mV hysteresis to prevent chatter near cutoff.

Use Value: Internal reference eliminates calibration drift vs. resistor-divider-only solutions; rail-to-rail input enables accurate measurement down to 1.6V supply.

Quad-Channel Window Comparator

Multi-Zone Temperature Alert System

Use Scenario: Implementing a safety-critical window comparator for a motor driver's bus voltage, ensuring it stays within 45V–55V range.

IC Role / Device Role / Timing Role: Two comparators (A/B) detect upper/lower bounds using REF and HYST; remaining two (C/D) provide redundant validation.

Use Value: Shared hysteresis guarantees identical trip margins on both edges; open-drain outputs allow OR'ing into single fault flag line.

Use Scenario: Monitoring four thermistor-based temperature zones (CPU, GPU, power stage, ambient) in industrial gateway hardware.

IC Role / Device Role / Timing Role: Each comparator channel compares a thermistor voltage against a fixed threshold derived from REF; outputs drive discrete LEDs or MCU GPIOs.

Use Value: 14–22 µA total current draw enables continuous monitoring without impacting thermal budget; 10 µs propagation delay ensures timely alerting.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX969EEE	Same die, QSOP-16 package (E16-1); 4.4mm × 5.0mm footprint, 0.635mm pitch.	Preferred for high-density layouts where narrow SO's 9.9mm length causes routing congestion.	Select MAX969EEE when board space is constrained in X-dimension but Z-height allows taller package.
TLV3704IPW	Quad comparator with rail-to-rail I/O, 1.8V–16V supply, no internal reference; 85 µA supply current.	Suitable for higher-voltage systems (>5.5V) but requires external reference and consumes >4× more current.	Choose TLV3704IPW only when operating above +5.5V or when internal reference is undesirable due to noise coupling concerns.

Compared with MAX969ESE, MAX969EEE offers identical electrical performance in a smaller footprint but with different thermal derating (457mW vs. 696mW), while TLV3704IPW trades off micropower operation and integrated reference for wider supply range and higher speed - making MAX969ESE optimal for compact, battery-sensitive 1.6V–5.5V monitoring tasks.

Availability

MAX969ESE is available at Aetrix Electronics and suitable for 2-cell battery-powered systems, portable medical devices, and industrial sensor nodes requiring stable component supply with guaranteed long-term availability.

Supply support for MAX969ESE 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 computing markets.

The MAX965–MAX970 family was engineered specifically for ultra-low-voltage, micropower threshold detection in battery-constrained systems - emphasizing rail-to-rail operation, integrated reference, and programmable hysteresis without sacrificing speed or accuracy.

FAQ

What is the maximum supply voltage for MAX969ESE?

The absolute maximum supply voltage for MAX969ESE is +6.0V, but functional operation is guaranteed only from +1.6V to +5.5V. Exceeding +5.5V risks violating the specified electrical characteristics and may degrade long-term reliability. The device's open-drain outputs can be pulled up to 6V regardless of V_CC, enabling level-shifting applications.

Does MAX969ESE include an internal voltage reference?

Yes, MAX969ESE integrates a precision 1.235V ±1.5% bandgap reference on the REF pin (Pin 8 in SO package, Pin 9 in QSOP). This reference is active across the full +1.6V to +5.5V supply range and can source up to 50 µA. It serves as the default threshold for all four comparators and is used to program hysteresis via the HYST pin.

What package type is used for MAX969ESE?

MAX969ESE uses a 16-pin narrow SO package (S16-1), measuring 3.9mm × 9.9mm with 1.27mm lead pitch. This package is distinct from the QSOP variant (MAX969EEE) and provides higher power dissipation (696mW) than the QSOP version (457mW), making it suitable for thermally demanding environments.

Can MAX969ESE operate from a 1.6V supply?

Yes, MAX969ESE is fully specified for operation down to +1.6V. At this minimum supply, it maintains rail-to-rail input common-mode range, 10 µs propagation delay (50 mV overdrive), and functional internal reference. Below 1.6V, performance degrades: reference accuracy falls, output sink current decreases, and propagation delay increases - though comparators may still operate down to ~1.0V.

How is hysteresis programmed on MAX969ESE?

Hysteresis on MAX969ESE is programmed using the HYST pin (Pin 9 in SO package, Pin 10 in QSOP) with two external resistors: R1 from REF to HYST, and R2 from HYST to GND. This network sets identical hysteresis (±1 mV to ±50 mV) across all four comparators. If unused, HYST must be tied directly to REF to enable internal hysteresis only.

MAX969ESE Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Package/Case:: 16-SOIC (0.154", 3.90mm Width)

Series:: -

Packaging:: Tube

Product Status:: Obsolete

Type:: with Voltage Reference

Number of Elements:: 4

Output Type:: Open-Drain, Rail-to-Rail

Voltage - Supply, Single/Dual (±):: 1.6V ~ 5.5V

:: 7mV @ 5.5V

Voltage - Input Offset (Max):: 0.05µA @ 5.5V

Current - Input Bias (Max):: -

Current - Output (Typ):: 22µA

Current - Quiescent (Max):: 56.48dB CMRR, 80dB PSRR

CMRR, PSRR (Typ):: 20µs

Propagation Delay (Max):: ±1mV

Hysteresis:: -40°C ~ 85°C

Operating Temperature:: -

Grade:: -

Qualification:: Surface Mount

:: 16-SOIC

MAX969ESE FAQ

1.How can I place an order for MAX969ESE through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX969ESE on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for MAX969ESE reliable?

The price and inventory of MAX969ESE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX969ESE is usually 5 days.

3.What payment methods are accepted for MAX969ESE?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX969ESE transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX969ESE?

MAX969ESE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX969ESE order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for MAX969ESE?

For technical support, including MAX969ESE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX969ESE requirements.

6.How does Aetrix verify that MAX969ESE is sourced from the original manufacturer or authorized distributors?

All MAX969ESE products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX969ESE meets industry standards.

7.What is the process for return or replacement of MAX969ESE?

All MAX969ESE units undergo pre-shipment inspection (PSI). If there is an issue with MAX969ESE, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The MAX969ESE part is unused and in its original packaging.

Return procedure for MAX969ESE:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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