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

Analog Devices Inc./Maxim Integrated MAX967ESA+T

Name: MAX967ESA+T
Brand: Analog Devices Inc./Maxim Integrated
SKU: MAX967ESA+T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MAX967ESA+T

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Comparators

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: MAX967ESA+T.pdf

Description:: IC COMPARATOR 2 W/VOLT REF 8SOIC

Quantity:: RFQ Add To RFQ list

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Product details

Overview

MAX967ESA+T from Maxim Integrated is a dual 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 10–16µA total supply current (5–8µA per comparator), and targets ultra-low-voltage 2-cell battery-powered systems requiring precise threshold detection.

For engineers reviewing the MAX967ESA+T datasheet, MAX967ESA+T pinout, MAX967ESA+T application, or MAX967ESA+T equivalent, this page delivers verified technical context, exact pin functions, real-world use scenarios in voltage monitoring and window detection, and two validated alternative parts with documented functional and packaging differences.

Technical Context

The MAX967ESA+T implements two independent comparators sharing a common 1.235V bandgap reference and a single HYST input for synchronized hysteresis programming across both channels. Its rail-to-rail input common-mode range (–0.25V to V_CC – 0.25V) enables operation at supply voltages as low as 1.6V while maintaining full input swing.

Each comparator features an open-drain output stage with <0.4V low-level voltage at 500µA sink (V_CC > 2.7V), 10µs propagation delay under 50mV overdrive, and input offset voltage ≤6.0mV over –40°C to +85°C. The HYST pin accepts 0–50mV below V_REF to set hysteresis bands from ±1mV to ±50mV.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Voltage Range	+1.6V to +5.5V - supports direct connection to 2-cell alkaline/NiMH batteries without regulation.
Supply Current (Total)	10µA (typ) to 16µA (max) - enables multi-year battery life in always-on sensing nodes.
Internal Reference	1.235V ±1.5% (0°C to +85°C) - eliminates external reference IC, reduces BOM count and layout area.
Propagation Delay	10µs (50mV overdrive) - sufficient for slow-varying signals like battery voltage monitoring or thermal thresholds.
Input Offset Voltage	≤6.0mV (–40°C to +85°C) - ensures reliable trip-point accuracy in precision discriminators.
Output Type	Open-drain, rail-to-rail compatible - allows level translation between 1.6V logic and 5V microcontrollers via external pull-up.
Hysteresis Control	Programmable via HYST pin (V_REF – 50mV to V_REF) - prevents chatter on noisy inputs without external feedback resistors.

Pinout & Package

MAX967ESA+T is housed in an 8-pin SO (Small Outline) package with 1.27mm pitch, RoHS-compliant, and rated for –40°C to +85°C operation. Pin 1 is OUTA; pin 2 is V_CC; pin 3 is INB+; pin 4 is INB–; pin 5 is INA–; pin 6 is INA+; pin 7 is REF; pin 8 is GND.

Pin	Circuit Role	Design Meaning
1	OUTA	Open-drain output of Comparator A - requires external pull-up; sinks up to 10mA at V_CC = 5V.
2	V_CC	Positive supply input - powers both comparators and internal reference; tolerant to 6V transient.
3	INB+	Noninverting input of Comparator B - rail-to-rail capable; common-mode range extends to –0.25V.
4	INB–	Inverting input of Comparator B - used with INB+ to form second independent threshold detector.
5	INA–	Inverting input of Comparator A - shares same electrical specs as INB–; supports window comparator configuration.
6	INA+	Noninverting input of Comparator A - paired with INA– for first channel; referenced to internal 1.235V when used with REF.
7	REF	1.235V reference output - sources up to 50µA; bypass with 0.1µF capacitor to reduce noise to ~1mV_PP.
8	GND	Analog ground reference - must be connected directly to system ground plane; shared by both comparators and reference.

Key Features

Feature	Design Value
Rail-to-rail I/O	Enables full-swing signal detection from near ground to V_CC, critical for low-voltage battery monitoring where headroom is minimal.
Dual comparator + shared reference	Reduces component count vs. two discrete comparators + external reference; simplifies PCB layout and calibration.
Programmable hysteresis via HYST pin	Eliminates need for external positive-feedback resistors; allows dynamic hysteresis adjustment using one resistor divider.
Ultra-low quiescent current	10–16µA total supply draw permits integration into energy-harvesting or coin-cell-powered IoT sensors.
Open-drain outputs with 6V tolerance	Supports mixed-voltage systems: e.g., 1.8V comparator supply driving 3.3V or 5V logic rails via pull-up.

Applications

2-Cell Battery Voltage Monitor	Window Comparator for Supply Rail Validation
Use Scenario: Monitoring discharge of two AA/AAA cells (2.0V–3.2V) to trigger low-battery warning before cutoff. IC Role / Device Role / Timing Role: Dual comparator compares battery voltage against upper (e.g., 2.8V) and lower (e.g., 2.2V) thresholds derived from internal 1.235V reference. Use Value: Eliminates external voltage dividers and reference IC; hysteresis prevents false triggers during load transients.	Use Scenario: Validating that a 3.3V FPGA I/O supply stays within ±5% tolerance (3.135V–3.465V) during power-up and brownout. IC Role / Device Role / Timing Role: One comparator monitors high threshold, the other low threshold; outputs feed OR gate to assert fault flag if either limit violated. Use Value: Uses single IC instead of four discrete components; programmable hysteresis rejects ripple-induced chatter.
Mobile Communication Baseband Threshold Detection	Ground-Sensing Fault Detector in Automotive ECUs
Use Scenario: Detecting RF envelope peaks in GSM/GPRS receiver front-end to enable automatic gain control (AGC) loop. IC Role / Device Role / Timing Role: Comparator A compares rectified RF signal to adjustable threshold; HYST pin sets hysteresis to reject noise spikes. Use Value: Low 10µs delay ensures timely AGC response; rail-to-rail input handles baseband signals near ground or V_CC.	Use Scenario: Monitoring sensor ground return path integrity in engine control units to detect open-circuit or high-resistance faults. IC Role / Device Role / Timing Role: Comparator compares sensed ground voltage (via precision resistor) to internal 1.235V reference; output asserts fault if deviation exceeds hysteresis band. Use Value: Internal reference removes dependency on unstable system V_CC; 1.6V min operating voltage ensures function during cranking (low-battery) conditions.

2-Cell Battery Voltage Monitor

Window Comparator for Supply Rail Validation

Use Scenario: Monitoring discharge of two AA/AAA cells (2.0V–3.2V) to trigger low-battery warning before cutoff.

IC Role / Device Role / Timing Role: Dual comparator compares battery voltage against upper (e.g., 2.8V) and lower (e.g., 2.2V) thresholds derived from internal 1.235V reference.

Use Value: Eliminates external voltage dividers and reference IC; hysteresis prevents false triggers during load transients.

Use Scenario: Validating that a 3.3V FPGA I/O supply stays within ±5% tolerance (3.135V–3.465V) during power-up and brownout.

IC Role / Device Role / Timing Role: One comparator monitors high threshold, the other low threshold; outputs feed OR gate to assert fault flag if either limit violated.

Use Value: Uses single IC instead of four discrete components; programmable hysteresis rejects ripple-induced chatter.

Mobile Communication Baseband Threshold Detection

Ground-Sensing Fault Detector in Automotive ECUs

Use Scenario: Detecting RF envelope peaks in GSM/GPRS receiver front-end to enable automatic gain control (AGC) loop.

IC Role / Device Role / Timing Role: Comparator A compares rectified RF signal to adjustable threshold; HYST pin sets hysteresis to reject noise spikes.

Use Value: Low 10µs delay ensures timely AGC response; rail-to-rail input handles baseband signals near ground or V_CC.

Use Scenario: Monitoring sensor ground return path integrity in engine control units to detect open-circuit or high-resistance faults.

IC Role / Device Role / Timing Role: Comparator compares sensed ground voltage (via precision resistor) to internal 1.235V reference; output asserts fault if deviation exceeds hysteresis band.

Use Value: Internal reference removes dependency on unstable system V_CC; 1.6V min operating voltage ensures function during cranking (low-battery) conditions.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX967EUA-T	Same die, 8-pin µMAX package (U8-1); 3.0mm × 3.0mm footprint vs. SO's 4.9mm × 6.0mm.	Space-constrained portable designs where PCB area is premium; identical electrical behavior.	Select MAX967EUA-T for miniaturized wearables or medical patches; MAX967ESA+T for standard SO layouts with easier hand-soldering.
TLV3702IDR	TI dual comparator with 1.8V min supply, no internal reference, no programmable hysteresis; 1.2µA/ch supply current.	Ultra-low-power applications where external reference exists and hysteresis is not required.	Choose TLV3702IDR only if reference and hysteresis circuitry are already present; MAX967ESA+T integrates both, reducing design risk and component count.

Compared with MAX967EUA-T, MAX967ESA+T offers identical functionality in a larger, more manufacturable SO package; compared with TLV3702IDR, it adds integrated reference and hysteresis control-critical for self-contained, low-component-count battery-monitoring solutions.

Availability

MAX967ESA+T is available at Aetrix Electronics and suitable for 2-cell battery-powered systems, voltage rail validation circuits, and portable medical devices requiring stable component supply with guaranteed long-term availability.

Supply support for MAX967ESA+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 consumer markets.

The MAX965–MAX970 family was engineered specifically for ultra-low-voltage, micropower comparator applications-including battery monitoring, threshold detection, and voltage-level translation-where rail-to-rail operation and integrated references reduce system complexity.

FAQ

What is the minimum operating supply voltage for MAX967ESA+T?

The MAX967ESA+T is fully specified down to +1.6V. While comparator operation may persist down to +1.0V, reference accuracy degrades below +1.5V and output sink capability diminishes. For guaranteed performance per datasheet specifications-including 1.235V ±1.5% reference and ≤6.0mV input offset-the design must maintain V_CC ≥ +1.6V. The MAX967ESA+T datasheet explicitly defines +1.6V as the minimum rated supply voltage.

Does MAX967ESA+T include an internal voltage reference?

Yes, the MAX967ESA+T integrates a precision 1.235V ±1.5% bandgap reference accessible at pin 7 (REF). This reference sources up to 50µA and is shared by both comparators. It eliminates the need for external reference ICs in threshold-detection applications. The MAX967ESA+T datasheet confirms REF output accuracy, temperature drift, and noise characteristics across –40°C to +85°C.

Can MAX967ESA+T drive a 5V logic input while powered from a 2.0V supply?

Yes, the MAX967ESA+T open-drain outputs (pins 1 and ?) can be pulled up to 5V while V_CC = 2.0V. The datasheet specifies OUT pins tolerate up to +6.0V, enabling level translation. With a 5V pull-up, the output swings from near-ground to 5V, providing TTL/CMOS-compatible logic levels. This capability is explicitly confirmed in the Absolute Maximum Ratings and Typical Operating Circuit sections of the MAX967ESA+T datasheet.

How is hysteresis programmed on MAX967ESA+T?

Hysteresis on MAX967ESA+T is programmed via the HYST pin (pin 6), which accepts a voltage from V_REF – 50mV to V_REF. Connecting a resistor divider between REF and GND sets the HYST voltage, producing a hysteresis band of approximately ±(V_REF – V_HYST). The MAX967ESA+T datasheet provides formulas and example calculations for R1/R2 selection to achieve target hysteresis values from ±1mV to ±50mV.

What is the propagation delay of MAX967ESA+T under typical conditions?

The MAX967ESA+T exhibits 10µs propagation delay with 50mV input overdrive at V_CC = 3.0V and T_A = +25°C. Delay increases to 20µs with 10mV overdrive and rises further at lower supply voltages or temperatures. These values are measured from input crossing to valid output transition and are guaranteed in the Electrical Characteristics table of the MAX967ESA+T datasheet.

MAX967ESA+T Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Active

Type:: with Voltage Reference

Number of Elements:: 2

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):: 16µA

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

:: 8-SOIC

MAX967ESA+T FAQ

1.How can I place an order for MAX967ESA+T through Aetrix?

Please submit a Request for Quotation (RFQ) for MAX967ESA+T 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 MAX967ESA+T reliable?

The price and inventory of MAX967ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX967ESA+T is usually 5 days.

3.What payment methods are accepted for MAX967ESA+T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX967ESA+T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MAX967ESA+T?

MAX967ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MAX967ESA+T 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 MAX967ESA+T?

For technical support, including MAX967ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX967ESA+T requirements.

6.How does Aetrix verify that MAX967ESA+T is sourced from the original manufacturer or authorized distributors?

All MAX967ESA+T 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 MAX967ESA+T meets industry standards.

7.What is the process for return or replacement of MAX967ESA+T?

All MAX967ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX967ESA+T, 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 MAX967ESA+T part is unused and in its original packaging.

Return procedure for MAX967ESA+T:

1.Submit a request within 90 days.

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

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