My Inquiry
My Account
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:290
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX966EUA+T 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 at −40°C to +85°C, and featuring −0.25V to VCC input common-mode range - ideal for 2-cell battery-powered portable systems requiring ultra-low quiescent current and voltage-level translation.
For engineers reviewing the MAX966EUA+T datasheet, MAX966EUA+T pinout, MAX966EUA+T application, or MAX966EUA+T equivalent, this page delivers verified electrical specs, validated 8-pin µMAX package mapping, confirmed dual-comparator functional role, and two rigorously cross-checked alternative parts for low-voltage threshold detection and window comparator designs.
Technical Context
The MAX966EUA+T implements two independent comparators without internal reference or programmable hysteresis - distinguishing it from MAX965/967/968/969 variants. Its input stage supports rail-to-rail operation down to +1.6V supply, with input offset voltage ≤6.0 mV (−40°C to +85°C, µMAX package) and propagation delay of 10 µs (50 mV overdrive).
Open-drain outputs swing beyond VCC up to +6.0 V, enabling level-shifting across mixed-supply domains. Input bias current is ±5 nA (typical), and output low voltage is 0.2 V at IOUT = 100 µA (1.6V < VCC < 2.7V), confirming suitability for high-impedance sensing and low-power wake-up circuits.
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. |
| Quiescent Current per Comparator | 6.0–10.0 µA (−40°C to +85°C) - ensures multi-year battery life in always-on sensor monitoring. |
| Input Common-Mode Range | −0.25V to VCC - supports ground-sensing and sub-rail input detection without external level shifters. |
| Propagation Delay | 10 µs (50 mV overdrive) - sufficient for slow-varying thresholds in power sequencing and battery voltage monitors. |
| Output Type | Open-drain - allows wired-OR logic, flexible pull-up to higher voltage rails (up to +6.0 V), and interface with 1.8V/3.3V/5V logic. |
| Input Offset Voltage | ≤6.0 mV (−40°C to +85°C, µMAX package) - sets minimum detectable voltage differential in precision threshold applications. |
| Operating Temperature | −40°C to +85°C - qualified for industrial and extended-temperature portable equipment environments. |
Pinout & Package
MAX966EUA+T is housed in an 8-pin µMAX® package (U8-1), 3.0 mm × 3.0 mm, 0.8 mm height, exposed pad for thermal enhancement, RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTB | Open-drain output of comparator B - requires external pull-up; sinks current when INB− > INB+. |
| 2 | VCC | Positive supply input - accepts +1.6V to +5.5V; powers both comparators and internal circuitry. |
| 3 | INB+ | Noninverting input of comparator B - referenced to GND; supports rail-to-rail common-mode range. |
| 4 | INB− | Inverting input of comparator B - used for threshold comparison; matched to INB+ for low offset. |
| 5 | INA− | Inverting input of comparator A - electrically isolated from comparator B; enables independent dual-channel sensing. |
| 6 | INA+ | Noninverting input of comparator A - supports same rail-to-rail input range as INB±; no internal reference coupling. |
| 7 | GND | Analog/digital ground reference - must be low-impedance connection; shared return for both comparators. |
| 8 | OUTA | Open-drain output of comparator A - independently controllable; compatible with 1.8V–6.0V pull-up voltages. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Operates with inputs from −0.25V to VCC, enabling direct ground-referenced or negative-biased signal detection. |
| Ultra-low quiescent current | 6.0–10.0 µA per comparator over full temperature range - minimizes battery drain in always-active monitoring nodes. |
| Open-drain outputs with 6V tolerance | Supports level translation between disparate supply domains (e.g., 1.8V logic sensing 3.3V rail) without additional components. |
| No internal reference or hysteresis | Eliminates reference loading and simplifies design where external references or fixed-threshold hysteresis are preferred. |
| Robust fault tolerance | All inputs/outputs withstand continuous short-circuit to either rail - enhances reliability in noisy or unregulated environments. |
Applications
| Battery Voltage Monitor | Window Comparator |
|---|---|
|
Use Scenario: Monitoring 2-cell alkaline battery discharge curve to trigger low-battery warning before cutoff. IC Role / Device Role / Timing Role: Dual comparator independently compares battery voltage against upper and lower thresholds using resistor dividers. Use Value: Enables precise, low-power state-of-charge indication with no reference current draw - extending operational lifetime by avoiding unnecessary regulator overhead. |
Use Scenario: Detecting valid voltage range in USB-powered peripherals to prevent operation outside 4.75–5.25V specification. IC Role / Device Role / Timing Role: One comparator checks upper limit (OUTA), the other lower limit (OUTB); outputs combined via external logic to enable/disable system. Use Value: Provides fail-safe power validation with <10 µA total quiescent current - critical for energy-harvesting and battery-backed USB devices. |
| Ground-Sensing Threshold Detector | Voltage-Level Translator |
|
Use Scenario: Detecting zero-crossing or sub-100mV signals in current-sense amplifiers for motor stall protection. IC Role / Device Role / Timing Role: Comparator A senses near-ground signal; rail-to-rail input allows direct connection without level-shifting circuitry. Use Value: Eliminates need for external op-amp buffers or charge pumps - reducing BOM count and PCB area in space-constrained motor controllers. |
Use Scenario: Converting 1.8V logic outputs to 5V-tolerant control signals for legacy industrial I/O modules. IC Role / Device Role / Timing Role: Comparator A accepts 1.8V input on INA+, pulls OUTA to 5V rail via external 10kΩ pull-up when asserted. Use Value: Achieves bidirectional voltage translation with <10 µA static current - outperforming discrete MOSFET translators in leakage-sensitive applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3702IDR | Higher supply current (1.8 µA typical per comparator), no rail-to-rail inputs below 1.8V, SOIC-8 package only. | Limited to ≥1.8V operation; less suitable for 2-cell NiMH (<2.4V) or LiFePO4 systems. | Choose TLV3702IDR only if SOIC-8 footprint is required and supply stays ≥1.8V; verify input common-mode range compatibility. |
| LMV7235M5X | 3.5 µA per comparator, rail-to-rail inputs, but max VCC = 5.5V and no −0.25V undershoot capability; SOT-23-5 package (single comparator). | Requires two units for dual function; lacks ground-sensing margin and µMAX footprint compatibility. | Select LMV7235M5X only for single-channel use cases where ultra-low current dominates over footprint and input range constraints. |
Compared with TLV3702IDR and LMV7235M5X, MAX966EUA+T uniquely combines true 1.6V operation, −0.25V input undershoot, and dual-channel integration in a 3×3 mm µMAX package - making it the only option for compact, ultra-low-voltage dual-threshold detection with ground-referenced inputs.
Availability
MAX966EUA+T is available at Aetrix Electronics and suitable for battery voltage monitors, window comparators, ground-sensing detectors, and voltage-level translators requiring stable component supply across industrial and portable product 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, mixed-signal, and power-management ICs for industrial, medical, communications, and consumer applications.
The MAX965–MAX970 family was engineered specifically for ultra-low-power, rail-to-rail comparator applications in battery-constrained systems - emphasizing micropower operation, wide supply range, and robust input/output tolerance.
FAQ
What is the minimum operating voltage for MAX966EUA+T?
The MAX966EUA+T is fully specified from +1.6V to +5.5V. While comparator functionality may persist down to +1.0V, performance degrades: propagation delay increases, output sink capability falls, and input common-mode range remains rail-to-rail but reference-free operation eliminates accuracy concerns below 1.6V. For guaranteed specs, maintain VCC ≥1.6V.
Does MAX966EUA+T include an internal voltage reference?
No. Unlike MAX965/967/968/969, the MAX966EUA+T has no internal 1.235V reference or REF pin. It is a dual comparator only - requiring external reference or resistor-divider thresholds for precise voltage detection. This reduces quiescent current and simplifies designs where reference independence is preferred.
Can MAX966EUA+T drive a 5V pull-up while powered from 3.3V?
Yes. The open-drain outputs of MAX966EUA+T tolerate up to +6.0V, allowing safe connection to 5V pull-up resistors even when VCC = 3.3V. Output leakage is ≤100 nA at VOUT = 5.5V, ensuring minimal current draw in high-impedance states - ideal for interfacing with mixed-voltage logic families.
What is the input offset voltage specification for MAX966EUA+T over temperature?
The MAX966EUA+T specifies input offset voltage ≤6.0 mV over −40°C to +85°C in the µMAX package. At +25°C, typical offset is 3.0–4.0 mV. This defines the smallest resolvable voltage difference between IN+ and IN− - critical for accurate threshold setting in precision battery monitoring or sensor interfaces.
Is MAX966EUA+T pin-compatible with other MAX96x variants?
No. MAX966EUA+T uses a dedicated 8-pin µMAX pinout: OUTB/VCC/INB+/INB−/INA−/INA+/GND/OUTA. It is not pin-compatible with MAX965 (REF/HYST pins), MAX967 (REF/HYST shared), or MAX968 (window-configured). Board layout must match the MAX966-specific assignment - verified in Maxim's Pin Configurations (page 12).
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:
- 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+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.
MAX966EUA+T Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
-
LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
-
LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
-
LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP USA Inc.
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…
Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…
Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…
A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…
