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Analog Devices Inc./Maxim Integrated MAX966ESA-T
- Part No.:
- MAX966ESA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX966ESA-T.pdf
- Description:
- IC COMPARATOR 2 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,223
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Product details
Overview
MAX966ESA-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 +25°C, and featuring -0.25V to (VCC – 0.25V) 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 MAX966ESA-T datasheet, MAX966ESA-T pinout, MAX966ESA-T application, or MAX966ESA-T equivalent, this page delivers verified technical context, exact pin functions, real-world use cases in threshold detection and supply sensing, and two validated alternative parts with documented functional and application differences.
Technical Context
The MAX966ESA-T implements two independent comparators without internal reference or programmable hysteresis - distinguishing it from MAX965/MAX967/MAX968 variants. Its input stage supports rail-to-rail operation down to +1.6V supply, with input offset voltage ≤6.0 mV over -40°C to +85°C and input bias current ±5 nA across full common-mode range.
Output stage uses open-drain NMOS with guaranteed sink capability up to 10 mA at VCC = 2V and propagation delay of 10 µs (50 mV overdrive), enabling direct interface with higher-voltage logic via external pull-up while maintaining micropower operation.
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 per Comparator | 6.0–10.0 µA at +25°C - ensures >1-year battery life in always-on portable sensors. |
| Input Common-Mode Range | -0.25V to (VCC – 0.25V) - supports ground-sensing and sub-rail input monitoring. |
| Propagation Delay | 10 µs at 50 mV overdrive - sufficient for slow-varying thresholds like battery voltage monitoring. |
| Input Offset Voltage | ≤6.0 mV over -40°C to +85°C - maintains accuracy in precision threshold detection. |
| Output Type | Open-drain - allows level-shifting to voltages up to +6V via external pull-up resistor. |
| Package | 8-pin SO (S8-2) - industry-standard footprint compatible with automated PCB assembly. |
Pinout & Package
MAX966ESA-T is housed in an 8-pin SOIC package (S8-2), measuring 4.90 mm × 3.91 mm × 1.75 mm, with standard gull-wing lead form and RoHS-compliant finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A open-drain output - requires external pull-up for logic-high assertion; sinks current when active. |
| 2 | GND | Analog/digital ground reference - must be low-impedance connection to minimize noise coupling. |
| 3 | N.C. | No internal connection - left unconnected; no routing or thermal relief required. |
| 4 | INA− | Comparator A inverting input - accepts signals from -0.25V to (VCC – 0.25V); high-impedance node. |
| 5 | INA+ | Comparator A noninverting input - same voltage range and impedance as INA−. |
| 6 | INB− | Comparator B inverting input - electrically isolated from INA−; supports independent dual-threshold detection. |
| 7 | INB+ | Comparator B noninverting input - identical electrical characteristics to INA+. |
| 8 | VCC | Positive supply input - accepts +1.6V to +5.5V; bypass capacitor (100nF) recommended near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Operates with inputs down to -0.25V and up to (VCC – 0.25V), enabling ground-referenced and supply-sensing applications. |
| Ultra-low quiescent current | 6.0–10.0 µA per comparator at +25°C - reduces system standby power by >90% vs. standard comparators. |
| Open-drain output with 6V tolerance | Supports level translation to higher-voltage logic domains (e.g., 3.3V/5V MCU I/O) without additional level-shifters. |
| Guaranteed operation at 1.6V supply | Enables direct interface with aging 2-cell alkaline batteries (nominal 3.0V, end-of-life ~1.6V). |
| Low input offset drift over temperature | ≤6.0 mV max over -40°C to +85°C - eliminates need for calibration in cost-sensitive portable designs. |
Applications
| Battery Voltage Monitor | Window Comparator for Sensor Thresholds |
|---|---|
Use Scenario: Monitoring 2-cell alkaline battery voltage 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 precise hysteresis-free dual-threshold detection with <10 µA total quiescent draw - extending usable battery life by months. |
Use Scenario: Detecting out-of-range temperature sensor output in wearable health monitors. IC Role / Device Role / Timing Role: One comparator monitors high limit, the other low limit; both drive shared alert line via wired-OR open-drain configuration. Use Value: Eliminates need for external logic gates or microcontroller polling - reducing BOM count and firmware complexity. |
| Supply Rail Supervisor | Mobile Communication Signal Level Translator |
Use Scenario: Validating stable 3.3V supply during power-up sequence in Bluetooth LE modules. IC Role / Device Role / Timing Role: Comparator A checks VDD ≥ 3.1V; Comparator B verifies VDD ≤ 3.5V - ensuring clean power before RF activation. Use Value: Prevents RF transmission instability caused by marginal supply conditions - improving link reliability and regulatory compliance. |
Use Scenario: Converting 1.8V baseband signal levels to 3.3V-compatible logic for host processor interface. IC Role / Device Role / Timing Role: Comparator acts as voltage-level translator with open-drain output pulled to 3.3V rail. Use Value: Achieves bidirectional level translation without timing skew or added propagation delay - preserving signal integrity in high-speed control paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3702IDR | Single-supply operation down to +1.8V; 800 nA per comparator; rail-to-rail output but push-pull (not open-drain) | Lacks open-drain flexibility for wired-OR or level translation; better suited for low-noise analog monitoring than digital interfacing | Select when lowest possible supply current is critical and external pull-up is not desired |
| LMV7235M5X | 1.8V min supply; 22 µA per comparator; open-drain output; no rail-to-rail input (CMVR = 0.2V to VCC – 0.2V) | Cannot monitor signals near ground or supply rails; higher current draw limits battery lifetime in always-on devices | Select when cost is primary constraint and input range requirements are less stringent |
Compared with TLV3702IDR and LMV7235M5X, MAX966ESA-T uniquely combines true rail-to-rail input operation at +1.6V supply, open-drain outputs for flexible interfacing, and sub-10 µA quiescent current - making it optimal for space-constrained, battery-critical dual-threshold detection where ground-referenced sensing and level translation are required.
Availability
MAX966ESA-T is available at Aetrix Electronics and suitable for 2-cell battery-powered systems, portable medical sensors, and industrial supply supervision requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for MAX966ESA-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-power, single-supply comparator applications in battery-constrained portable electronics - emphasizing rail-to-rail operation, micropower consumption, and robust input/output voltage tolerance.
FAQ
What is the minimum operating supply voltage for MAX966ESA-T?
The MAX966ESA-T is fully specified from +1.6V to +5.5V. While comparator functionality may persist down to +1.0V, performance degrades below +1.6V - including reduced output sink capability and increased propagation delay. For reliable operation in production designs, +1.6V is the validated minimum supply voltage for MAX966ESA-T.
Does MAX966ESA-T include an internal voltage reference?
No, MAX966ESA-T does not include an internal voltage reference. Unlike MAX965/MAX967/MAX968/MAX969 variants, the MAX966ESA-T is a dual comparator only - with no REF or HYST pins. External reference sources must be used for threshold generation when implementing MAX966ESA-T in precision detection circuits.
Can MAX966ESA-T drive a 5V logic input directly?
Yes, MAX966ESA-T can interface with 5V logic inputs using its open-drain output structure. Connect an external pull-up resistor from OUTA or OUTB to the 5V rail. The output NMOS can safely sink current with VOUT up to +6.0V, making MAX966ESA-T suitable for level translation between 1.6–5.5V supplies and higher-voltage logic domains.
What is the input offset voltage specification for MAX966ESA-T over temperature?
MAX966ESA-T has a maximum input offset voltage of 6.0 mV over the full operating temperature range of -40°C to +85°C. At +25°C, typical offset is 3.0–4.0 mV depending on package. This specification ensures consistent threshold accuracy in battery-monitoring and supply-sensing applications without requiring trimming or calibration.
Is MAX966ESA-T pin-compatible with other devices in the MAX965–MAX970 family?
No, MAX966ESA-T is not pin-compatible with MAX965ESA, MAX967ESA, or MAX968ESA due to differing pin functions - particularly the absence of REF and HYST pins. MAX966ESA-T uses pins 3 (N.C.), 4 (INA−), 5 (INA+), 6 (INB−), and 7 (INB+), whereas MAX965/MAX967/MAX968 assign those pins to REF, HYST, or alternate inputs. Board layout must be specific to MAX966ESA-T.
MAX966ESA-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:
- Obsolete
- Type:
- General Purpose
- 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):
- 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-SOIC
MAX966ESA-T FAQ
1.How can I place an order for MAX966ESA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX966ESA-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 MAX966ESA-T reliable?
The price and inventory of MAX966ESA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX966ESA-T is usually 5 days.
3.What payment methods are accepted for MAX966ESA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX966ESA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX966ESA-T?
MAX966ESA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX966ESA-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 MAX966ESA-T?
For technical support, including MAX966ESA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX966ESA-T requirements.
6.How does Aetrix verify that MAX966ESA-T is sourced from the original manufacturer or authorized distributors?
All MAX966ESA-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 MAX966ESA-T meets industry standards.
7.What is the process for return or replacement of MAX966ESA-T?
All MAX966ESA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX966ESA-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 MAX966ESA-T part is unused and in its original packaging.
Return procedure for MAX966ESA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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