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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:434
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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 6.0µA per comparator (typical), and featuring -0.25V to VCC input common-mode range. It is designed for ultra-low-power threshold detection in 2-cell battery systems where space and quiescent current are critical.
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 for low-voltage portable designs.
Technical Context
The MAX966EUA+ implements two independent high-impedance comparators with rail-to-rail input stages capable of operation down to 1.6V supply, and open-drain outputs that swing beyond VCC up to 6V. Its input bias current is ±5nA (typical) and input offset voltage is 4.0mV (max, -40°C to +85°C, µMAX package).
No internal reference or programmable hysteresis is integrated-unlike MAX965/967/968/969-making it a minimal-footprint, cost-optimized dual comparator for fixed-threshold applications requiring only external hysteresis if needed.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.6V to +5.5V - supports direct operation from 2-cell alkaline/NiMH or single Li-ion battery without regulation. |
| Quiescent Current per Comparator | 6.0µA (typical) - enables multi-year battery life in always-on sensing nodes. |
| Input Common-Mode Range | -0.25V to VCC - allows direct interface to ground-referenced sensors and rail-swinging signals. |
| Propagation Delay | 10µs (50mV overdrive) - sufficient for slow-varying battery monitoring and power-good detection. |
| Output Type | Open-drain - permits wired-OR logic, level translation up to 6V, and flexible pull-up configuration. |
| Input Offset Voltage | 6.0mV (max, -40°C to +85°C) - sets minimum detectable voltage differential in precision threshold applications. |
| Package | 8-pin µMAX (U8-1) - 3mm × 3mm footprint ideal for space-constrained portable PCBs. |
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 - high-impedance node (±5nA bias current) for reference or signal routing. |
| 4 | INB- | Inverting input of comparator B - matched to INB+ for differential sensing or single-ended threshold comparison. |
| 5 | INA- | Inverting input of comparator A - electrically isolated from INB-; supports independent dual-channel monitoring. |
| 6 | INA+ | Noninverting input of comparator A - identical bias and CMVR specs as INB+; enables parallel threshold setups. |
| 7 | GND | Analog ground reference - must be low-impedance connection shared with VCC return path. |
| 8 | OUTA | Open-drain output of comparator A - independently controllable; supports separate pull-up resistors per channel. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Operates from -0.25V to VCC - eliminates need for level-shifting circuitry when interfacing with sub-ground or rail-swinging sensors. |
| Ultra-low quiescent current | 6.0µA per comparator (typical) - reduces system standby power by >90% versus standard comparators, extending battery runtime. |
| Open-drain outputs with 6V tolerance | Outputs sink up to 10mA while tolerating 6V on OUT pins - enables direct interface to 3.3V/5V logic domains and mixed-voltage systems. |
| Wide temperature operation | -40°C to +85°C - qualified for industrial and automotive cabin environments without derating. |
| Small 3mm × 3mm µMAX package | 8-pin U8-1 footprint - saves >60% board area versus SO-8, critical for wearables and compact IoT sensors. |
Applications
| Battery Voltage Monitor | Power-Good Detector |
|---|---|
|
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 two fixed thresholds (e.g., 2.4V and 2.2V) using resistor dividers. Use Value: Enables precise end-of-life prediction with <6.0mV offset error, avoiding premature shutdown while maximizing usable capacity. |
Use Scenario: Validating stable 3.3V supply after power-up in microcontroller-based sensor nodes. IC Role / Device Role / Timing Role: One comparator monitors 3.3V rail against 1.235V reference (via external divider); second validates backup LDO. Use Value: Ensures deterministic boot sequence with 10µs propagation delay and no false triggers from supply ripple. |
| Window Comparator | Ground-Sensing Threshold Detector |
|
Use Scenario: Detecting valid analog sensor output (e.g., 0.5V–2.5V) within safe operating bounds in medical patch monitors. IC Role / Device Role / Timing Role: Two comparators configured as upper/lower limit detectors with shared reference divider network. Use Value: Provides fail-safe window validation using only one IC, reducing BOM count and layout complexity vs. discrete solutions. |
Use Scenario: Sensing ground-level faults in battery-powered motor drivers where negative voltage excursions occur during switching. IC Role / Device Role / Timing Role: Comparator A monitors shunt voltage across low-side MOSFET; comparator B checks for <−0.25V excursion. Use Value: Leverages −0.25V input capability to detect sub-ground transients without clamping diodes or level shifters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual micropower comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV7012DRYR | Lower supply current (350nA/comparator), but narrower input CMVR (0.2V below VCC), no sub-ground capability. | Suitable only for >1.8V systems with rail-referenced inputs; cannot replace MAX966EUA+ in ground-sensing or 1.6V operation. | Select when ultra-low IQ dominates and input range ≥0.2V below VCC is acceptable. |
| LMV7215M5X | Higher speed (120ns propagation delay), but higher IQ (32µA/comparator) and limited CMVR (0.1V above GND to VCC−1.2V). | Applicable in fast-response power sequencing, but unsuitable for 2-cell battery monitoring due to 1.8V min VCC and no sub-ground input. | Choose for timing-critical applications where 1.6V operation and sub-ground sensing are not required. |
Compared with TLV7012DRYR and LMV7215M5X, MAX966EUA+ uniquely supports true rail-to-rail input operation down to −0.25V and 1.6V supply, making it irreplaceable in ultra-low-voltage ground-fault detection and legacy battery systems where other alternatives fail to meet voltage-range requirements.
Availability
MAX966EUA+ is available at Aetrix Electronics and suitable for battery voltage monitoring, power-good detection, and window comparator applications requiring stable component supply across industrial, medical, and portable electronics programs.
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 precision analog, mixed-signal, and high-reliability ICs for power, sensing, and interface applications.
The MAX965–MAX970 family was engineered specifically for micropower, ultra-low-voltage comparator functions in battery-constrained systems-emphasizing rail-to-rail operation, sub-2V startup, and minimal quiescent current without sacrificing accuracy.
FAQ
What is the minimum operating supply voltage for MAX966EUA+?
The MAX966EUA+ is fully specified from +1.6V to +5.5V. While it may function down to ~1.0V, performance degrades: propagation delay increases, output sink capability falls, and input common-mode range remains rail-to-rail but reference functionality ceases below 1.5V. For guaranteed operation, maintain VCC ≥1.6V.
Does MAX966EUA+ include an internal voltage reference?
No. Unlike MAX965/MAX967/MAX968/MAX969, the MAX966EUA+ does not integrate a 1.235V reference or HYST pin. It is a dual comparator-only device. External reference or resistor-divider networks must be used for threshold setting.
Can MAX966EUA+ drive a 5V logic input directly?
Yes. The open-drain outputs of MAX966EUA+ tolerate up to +6.0V on OUTA/OUTB pins. With a 5V pull-up resistor, it cleanly interfaces to 5V TTL/CMOS logic without level-shifter circuitry-provided the pull-up source is referenced to 5V and current limits are observed.
What is the input offset voltage specification for MAX966EUA+ over temperature?
The MAX966EUA+ has a maximum input offset voltage of 6.0mV across the full −40°C to +85°C range (µMAX package). At +25°C, typical offset is ≤4.0mV. This defines the smallest resolvable voltage difference between IN+ and IN− under worst-case conditions.
Is MAX966EUA+ pin-compatible with other devices in the MAX965–MAX970 family?
No. MAX966EUA+ uses an 8-pin µMAX package with pinout optimized for dual comparators (OUTA, IN+, IN−, GND, VCC, IN+, IN−, OUTB). It is not pin-compatible with MAX965 (single, REF/HYST pins), MAX967 (dual with REF/HYST), or MAX969 (quad). Layout reuse requires explicit pin mapping verification.
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:
- Active
- 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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