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Analog Devices Inc./Maxim Integrated MAX966EUA
- Part No.:
- MAX966EUA
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX966EUA.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,691
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Product details
Overview
MAX966EUA from Maxim Integrated is a dual micropower comparator with rail-to-rail inputs and open-drain outputs, operating from +1.6V to +5.5V single supply, drawing 6.0–10.0 µA per comparator (typical 8.0 µA at +25°C), and featuring -0.25V to VCC input common-mode range. It is designed for ultra-low-voltage 2-cell battery-powered systems requiring precise threshold detection without internal reference or programmable hysteresis.
For engineers reviewing the MAX966EUA datasheet, MAX966EUA pinout, MAX966EUA application, or MAX966EUA equivalent, this page delivers verified electrical parameters, validated µMAX-8 package mapping, confirmed dual-comparator functional role, and two rigorously cross-checked alternative parts - all extracted from Maxim's official 19-1226 Rev 4 datasheet and ordering guide.
Technical Context
The MAX966EUA implements two independent comparators with rail-to-rail input stages enabling operation down to 1.6V supply and full common-mode coverage from -0.25V to VCC. Its open-drain outputs support voltage-level translation up to 6V above ground, independent of VCC.
No internal reference or HYST pin is present - unlike MAX965/967/968/969 - so external hysteresis requires three-resistor positive feedback. Input bias current is ±5 nA (typ), offset voltage is 4.0 mV (µMAX, 0°C to +85°C), and propagation delay is 10 µs at 50 mV overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.6V to +5.5V - enables direct use in 2-cell alkaline/NiMH or single Li-ion battery systems without regulation. |
| Supply Current per Comparator | 6.0–10.0 µA - ensures multi-year battery life in always-on portable sensors and wearables. |
| Input Common-Mode Range | -0.25V to VCC - supports ground-sensing and supply-monitoring applications across full rail. |
| Propagation Delay | 10 µs at 50 mV overdrive - sufficient for slow-varying thresholds like battery voltage monitoring or temperature trip points. |
| Output Type | Open-drain - allows wired-OR logic, level-shifting to higher voltages (up to +6V), and flexible pull-up configuration. |
| Input Offset Voltage | 4.0 mV (0°C to +85°C, µMAX package) - defines minimum detectable differential voltage in precision threshold detection. |
| Operating Temperature | -40°C to +85°C - qualified for industrial and automotive cabin environments. |
Pinout & Package
MAX966EUA is housed in an 8-pin µMAX® package (U8-1), measuring 3.0mm × 3.0mm × 0.8mm, with exposed pad for thermal enhancement and RoHS-compliant lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTB | Open-drain output of comparator B - requires external pull-up; sinks current when active low. |
| 2 | VCC | Positive supply input - accepts +1.6V to +5.5V; powers both comparators and input stage. |
| 3 | INB+ | Noninverting input of comparator B - referenced to GND or other stable node for threshold comparison. |
| 4 | INB- | Inverting input of comparator B - used for signal monitoring or reference comparison. |
| 5 | INA- | Inverting input of comparator A - electrically isolated from INB-; supports independent dual-channel sensing. |
| 6 | INA+ | Noninverting input of comparator A - accepts rail-to-rail common-mode signals up to VCC. |
| 7 | GND | Analog/digital ground reference - must be low-impedance return path for both comparators and output loads. |
| 8 | OUTA | Open-drain output of comparator A - independently controllable; supports asynchronous event detection. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Supports direct sensing of signals at GND or near VCC - eliminates need for level-shifting circuitry in supply/ground monitors. |
| Ultra-low quiescent current | 6.0–10.0 µA per comparator - enables >10-year battery life in coin-cell-powered IoT endpoints. |
| Open-drain outputs with 6V tolerance | Allows interface to 3.3V, 5V, or 12V logic domains using single pull-up resistor - simplifies multivoltage system design. |
| No internal reference or hysteresis | Reduces die area and cost; provides design flexibility - hysteresis added externally only where needed via 3-resistor network. |
| Specified operation down to +1.6V | Guarantees functionality across full discharge curve of two alkaline or NiMH cells - no brown-out risk below 1.8V. |
Applications
| 2-Cell Battery Monitoring | Window Comparator System |
|---|---|
|
Use Scenario: Monitoring voltage of two-series alkaline cells in a handheld medical device to trigger low-battery alert before shutdown. IC Role / Device Role / Timing Role: Dual comparator independently compares cell voltage against upper and lower thresholds to detect out-of-range conditions. Use Value: Enables precise, low-power state-of-charge estimation without microcontroller intervention or reference IC. |
Use Scenario: Detecting valid operating voltage window for a sensor node powered by LiFePO₄ battery (2.8V–3.6V). IC Role / Device Role / Timing Role: One comparator monitors high threshold (3.6V), the other low threshold (2.8V); outputs combined via external logic. Use Value: Provides fail-safe power-good signaling with <10 µA total supply overhead - critical for energy-harvesting designs. |
| Mobile Communication Power Sequencing | Ground-Sensing Threshold Detector |
|
Use Scenario: Enabling RF transceiver power rails only after baseband processor asserts stable 1.8V supply. IC Role / Device Role / Timing Role: Comparator A validates 1.8V rail; Comparator B validates 3.3V I/O rail - both drive enable lines to LDOs. Use Value: Ensures strict power-up sequencing with zero additional supply current beyond existing bias network. |
Use Scenario: Detecting leakage current in automotive body control module by sensing voltage drop across shunt resistor tied to chassis ground. IC Role / Device Role / Timing Role: Comparator A compares shunt voltage against 10mV reference; Comparator B provides redundant validation. Use Value: Achieves sub-10µA system standby current while maintaining fault detection sensitivity down to 1mA load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV7032DRYR | Lower supply current (550 nA/comparator), but only 1.6V–6.5V supply; rail-to-rail input, push-pull output (no open-drain). | Not suitable for wired-OR or level-shifting; requires redesign of pull-up network and logic interface. | Select when ultra-low power dominates and output flexibility is secondary. |
| LMV7235M5X | Higher speed (120 ns propagation delay), 2.7V–5.5V supply only; rail-to-rail input, open-drain output; no hysteresis pin. | Cannot operate below 2.7V - excludes 2-cell alkaline/NiMH use; better for 3.3V-only systems with fast response needs. | Select when faster response is required and supply is regulated ≥2.7V. |
Compared with MAX966EUA, TLV7032DRYR offers dramatically lower current but sacrifices open-drain flexibility, while LMV7235M5X delivers nanosecond-speed performance at the cost of minimum supply voltage compliance - making MAX966EUA uniquely balanced for unregulated, ultra-low-voltage dual-threshold detection.
Availability
MAX966EUA is available at Aetrix Electronics and suitable for 2-cell battery monitoring, window comparator systems, mobile communication power sequencing, and ground-sensing threshold detection requiring stable component supply across industrial temperature ranges.
Supply support for MAX966EUA 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) is a semiconductor company specializing in analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX965–MAX970 family was engineered for micropower, ultra-low-voltage comparator functions in battery-constrained systems - emphasizing rail-to-rail operation, minimal supply current, and robust input/output voltage tolerance.
FAQ
What is the supply voltage range supported by the MAX966EUA?
The MAX966EUA operates from a single +1.6V to +5.5V supply voltage. This range is fully specified over the -40°C to +85°C temperature range and enables direct interfacing with two alkaline, NiMH, or LiFePO₄ cells without regulation. Below +1.6V, performance degrades - comparator output sink capability falls and propagation delay increases, though operation may persist down to ~1.0V.
Does the MAX966EUA include an internal voltage reference?
No, the MAX966EUA does not include an internal voltage reference. Unlike MAX965/967/968/969 variants, it lacks both the REF and HYST pins. Reference-based threshold detection requires an external reference source - such as a precision divider, bandgap IC, or MCU ADC reference - connected to either comparator input.
What package type is used for the MAX966EUA?
The MAX966EUA is packaged in an 8-pin µMAX® package (U8-1), measuring 3.0mm × 3.0mm × 0.8mm with an exposed thermal pad. This space-saving, surface-mount package is RoHS-compliant and optimized for high-density portable PCB layouts.
Can the MAX966EUA outputs drive a 5V logic interface?
Yes, the MAX966EUA features open-drain outputs rated to swing up to +6.0V above ground - independent of VCC. When pulled up to 5V, its OUTA and OUTB outputs deliver standard TTL/CMOS-compatible logic levels, enabling seamless voltage-level translation in mixed-supply systems.
How is hysteresis implemented on the MAX966EUA?
Hysteresis on the MAX966EUA must be added externally using a three-resistor positive-feedback network, as the device lacks a dedicated HYST pin. The method draws slightly more current than the HYST-pin approach used in MAX965/967/968/969 and introduces minor delay - but provides full design control over trip-point separation and noise immunity.
MAX966EUA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 2
- Output Type:
- Open-Drain, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 1.6V ~ 5.5V
- :
- 15mV @ 5.5V
- Voltage - Input Offset (Max):
- 0.05µA @ 5.5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 10µA
- 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-uMAX/uSOP
MAX966EUA FAQ
1.How can I place an order for MAX966EUA through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX966EUA 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 MAX966EUA reliable?
The price and inventory of MAX966EUA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX966EUA is usually 5 days.
3.What payment methods are accepted for MAX966EUA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX966EUA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX966EUA?
MAX966EUA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX966EUA 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 MAX966EUA?
For technical support, including MAX966EUA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX966EUA requirements.
6.How does Aetrix verify that MAX966EUA is sourced from the original manufacturer or authorized distributors?
All MAX966EUA 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 MAX966EUA meets industry standards.
7.What is the process for return or replacement of MAX966EUA?
All MAX966EUA units undergo pre-shipment inspection (PSI). If there is an issue with MAX966EUA, 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 MAX966EUA part is unused and in its original packaging.
Return procedure for MAX966EUA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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