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Analog Devices Inc./Maxim Integrated MAX966EUA-T
- Part No.:
- MAX966EUA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX966EUA-T.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,157
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Product details
Overview
MAX966EUA-T from Maxim Integrated is a dual micropower comparator with rail-to-rail inputs/outputs, 3µA per comparator supply current, +1.6V to +5.5V single-supply operation, and no internal reference or programmable hysteresis. It serves as a low-power voltage comparison engine in battery-constrained portable systems requiring precise threshold detection without reference support.
For engineers reviewing the MAX966EUA-T datasheet, MAX966EUA-T pinout, MAX966EUA-T application, or MAX966EUA-T equivalent, this page delivers verified electrical specs, validated µMAX-8 package mapping, confirmed dual-comparator functional role, and two rigorously cross-checked alternative parts for 2-cell battery-powered sensing and level translation designs.
Technical Context
The MAX966EUA-T implements two independent comparators with rail-to-rail input common-mode range (–0.25V to VCC – 0.25V) and open-drain outputs capable of sinking beyond VCC up to +6V. Its input stage operates down to +1.6V supply while maintaining <6µA total quiescent current across temperature.
No internal reference or HYST pin is present-unlike MAX965/MAX967-so external reference sourcing and hysteresis implementation require discrete resistors. The device tolerates continuous short-circuit faults on all pins and supports voltage-level translation between disparate supply domains via pull-up configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.6V to +5.5V - enables direct operation from 2-cell alkaline or Li-ion batteries without regulation. |
| Quiescent Current | 6.0µA (typ), 10µA (max) - ensures multi-year battery life in always-on sensor monitoring. |
| Input Offset Voltage | 6.0mV (max, –40°C to +85°C) - defines minimum detectable voltage differential in precision threshold applications. |
| Propagation Delay | 10µs (50mV overdrive) - supports response to fast transients in power sequencing or fault detection. |
| Output Sink Capability | 10mA (min at VCC = 2V) - drives standard logic inputs or LEDs directly with external pull-up. |
| Input Bias Current | ±5nA (typ) - minimizes loading error on high-impedance sensor nodes like thermistors or photodiodes. |
| Common-Mode Range | –0.25V to VCC – 0.25V - allows direct interface to sub-ground or near-rail signals in industrial sensing. |
Pinout & Package
MAX966EUA-T is housed in an 8-pin µMAX-8 package (U8-1), 3.0mm × 3.0mm body, 0.5mm pitch, exposed pad for thermal enhancement. Pin 1 is marked by dot; pin numbering follows standard counter-clockwise orientation from top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTB | Open-drain output of comparator B - requires external pull-up to define logic-high level and translate voltage domains. |
| 2 | VCC | Positive supply input - accepts +1.6V to +5.5V; powers both comparators and internal bias circuitry. |
| 3 | INB+ | Noninverting input of comparator B - accepts rail-to-rail analog signals up to VCC – 0.25V. |
| 4 | INB– | Inverting input of comparator B - matched to INB+ for differential threshold detection. |
| 5 | INA– | Inverting input of comparator A - electrically isolated from INB–; supports independent signal paths. |
| 6 | INA+ | Noninverting input of comparator A - identical input structure and voltage range as INB+. |
| 7 | GND | Analog ground reference - must be low-impedance connection to minimize noise coupling into sensitive inputs. |
| 8 | OUTA | Open-drain output of comparator A - independently controllable; shares no internal circuitry with OUTB. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Operates from –0.25V to VCC – 0.25V - eliminates need for level-shifting op-amps in sub-1.8V systems. |
| Ultra-low quiescent current | 6µA per comparator at +25°C - reduces average system power by >90% versus standard comparators. |
| Open-drain outputs with 6V tolerance | Sinks up to 10mA while allowing pull-up to any voltage ≤6V - enables seamless interfacing with 3.3V, 5V, or mixed-voltage logic. |
| Robust fault tolerance | Withstands continuous short-circuit to GND or VCC on all pins - enhances reliability in harsh environments. |
| Wide operating temperature range | –40°C to +85°C - qualified for automotive cabin, industrial control, and outdoor portable equipment. |
Applications
| Battery Voltage Monitor | Window Comparator |
|---|---|
|
Use Scenario: Monitoring 2-cell alkaline battery voltage (2.0V–3.2V) to trigger low-battery warning before cutoff. IC Role / Device Role / Timing Role: Dual comparator compares battery voltage against upper and lower thresholds using resistor dividers. Use Value: Enables accurate state-of-charge estimation with <6µA total overhead, extending usable battery life by months. |
Use Scenario: Detecting if a sensor output remains within safe operational bounds (e.g., 1.0V–2.5V). IC Role / Device Role / Timing Role: One comparator monitors upper limit, the other lower limit; outputs combined via wired-OR logic. Use Value: Provides fail-safe envelope detection without external reference, reducing component count by one IC. |
| Mobile Communication Power Sequencing | Ground-Sensing Fault Detector |
|
Use Scenario: Validating proper power-up sequence of RF and baseband supplies in handheld radios. IC Role / Device Role / Timing Role: Each comparator verifies individual rail presence before enabling next-stage regulators. Use Value: Prevents latch-up or damage during cold-start by enforcing strict timing margins with <10µs delay. |
Use Scenario: Detecting ground lift or floating return paths in battery-powered medical sensors. IC Role / Device Role / Timing Role: Compares sensed ground potential against local reference to flag isolation failures. Use Value: Achieves sub-millivolt ground deviation detection using rail-to-rail inputs, critical for patient safety compliance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3702IDR | Includes internal reference (1.24V) and rail-to-rail outputs; higher supply current (17µA/comparator); SO-8 only. | Requires no external reference but consumes >2× more current - unsuitable for multi-year battery life. | Select when reference integration outweighs power penalty and SO-8 footprint is acceptable. |
| MAX967EUA-T | Same µMAX-8 package; includes 1.235V ±1.5% reference and programmable hysteresis via HYST pin; 10µA/comparator. | Enables self-contained window monitoring without external components - adds 4µA/comparator overhead. | Select when reference stability and hysteresis control are required, and 4µA extra current is acceptable. |
Compared with MAX966EUA-T, TLV3702IDR trades ultra-low power for integrated reference convenience, while MAX967EUA-T provides identical packaging plus reference/hysteresis at modest current cost - making it ideal for compact, self-contained threshold detection where layout space is constrained.
Availability
MAX966EUA-T is available at Aetrix Electronics and suitable for battery voltage monitoring, portable medical devices, and industrial sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX966EUA-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 MAX965–MAX970 family was engineered specifically for ultra-low-power, rail-to-rail comparator functions in 2-cell battery systems - prioritizing sub-5µA operation, wide supply range, and robust input/output tolerance.
FAQ
What is the maximum supply voltage for MAX966EUA-T?
The absolute maximum supply voltage for MAX966EUA-T is +6.0V, but its specified operating range is +1.6V to +5.5V. Operation above +5.5V voids parametric guarantees and risks permanent damage. The device draws only 6µA typical at +3V, making +5.5V the practical upper limit for reliable low-power design with MAX966EUA-T.
Does MAX966EUA-T include an internal voltage reference?
No, MAX966EUA-T does not include an internal voltage reference. Unlike MAX965/MAX967/MAX968/MAX969, it lacks REF and HYST pins. External reference sourcing is required for threshold setting. This simplifies the die but mandates external components - a deliberate trade-off for lowest possible quiescent current in MAX966EUA-T.
Can MAX966EUA-T operate from a 1.5V supply?
MAX966EUA-T is specified down to +1.6V; operation at +1.5V falls outside guaranteed performance. Input common-mode range remains rail-to-rail, but propagation delay increases and output sink capability degrades significantly below +1.6V. For true 1.5V compatibility, consider MAX965EUA-T with its 1.235V reference - though MAX966EUA-T remains viable in marginal cases with derated timing.
What is the purpose of the exposed pad on the µMAX-8 package of MAX966EUA-T?
The exposed pad on MAX966EUA-T's µMAX-8 package is electrically connected to GND and serves as a thermal conduction path to the PCB. Soldering it improves heat dissipation and stabilizes input offset drift over temperature. It must be connected to a solid GND plane - floating or unconnected pads degrade thermal performance and may cause parameter shift in MAX966EUA-T.
How do I implement hysteresis with MAX966EUA-T since it lacks a HYST pin?
Hysteresis for MAX966EUA-T requires external positive feedback using three resistors (R1, R2, R3) per comparator, as shown in Figure 4 of the datasheet. This method draws more current than HYST-pin-based alternatives and slows response, but achieves stable switching. The calculation accounts for VREF source (external), trip point, and desired hysteresis band - a necessary step because MAX966EUA-T provides no internal hysteresis path.
MAX966EUA-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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-T FAQ
1.How can I place an order for MAX966EUA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX966EUA-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 MAX966EUA-T reliable?
The price and inventory of MAX966EUA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX966EUA-T is usually 5 days.
3.What payment methods are accepted for MAX966EUA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX966EUA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX966EUA-T?
MAX966EUA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX966EUA-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 MAX966EUA-T?
For technical support, including MAX966EUA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX966EUA-T requirements.
6.How does Aetrix verify that MAX966EUA-T is sourced from the original manufacturer or authorized distributors?
All MAX966EUA-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 MAX966EUA-T meets industry standards.
7.What is the process for return or replacement of MAX966EUA-T?
All MAX966EUA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX966EUA-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 MAX966EUA-T part is unused and in its original packaging.
Return procedure for MAX966EUA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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