My Inquiry
My Account
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:2,115
Please send an inquiry. Send us your inquiry, and we will respond immediately.
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 (typical 8.0 µA), and featuring -0.25V to VCC–0.25V input common-mode range. It is designed for ultra-low-voltage threshold detection in portable battery-powered systems.
For engineers reviewing the MAX966ESA+T datasheet, MAX966ESA+T pinout, MAX966ESA+T application, or MAX966ESA+T equivalent, this page delivers verified electrical specs, package mapping, functional role in voltage monitoring, and validated alternative options for dual-comparator signal conditioning in space-constrained, low-power designs.
Technical Context
The MAX966ESA+T implements two independent comparators without internal reference or programmable hysteresis-unlike MAX965/967/968/969-requiring external reference and hysteresis circuitry when needed. 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 typical.
Each comparator features an open-drain output capable of sinking up to 10 mA (at VCC = 5V) and tolerating pull-up voltages up to 6V above ground. Propagation delay is 10 µs at 50 mV overdrive, with power-up time of 20 µs from 0V to valid output.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.6V to +5.5V - enables direct use with 2-cell alkaline/NiMH or single Li-ion batteries. |
| Supply Current per Comparator | 6.0–10.0 µA - ensures multi-year battery life in always-on sensing nodes. |
| Input Common-Mode Range | -0.25V to VCC–0.25V - supports detection near ground or rail without level-shifting. |
| Propagation Delay | 10 µs (50 mV overdrive) - suitable for slow-to-moderate speed threshold alerts (e.g., battery low, fault latch). |
| Input Offset Voltage | ≤6.0 mV (–40°C to +85°C) - sets minimum detectable voltage difference in precision discriminators. |
| Output Type | Open-drain - allows wired-OR logic, flexible pull-up to higher voltage rails (up to +6V), and interface with mixed-voltage systems. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and extended commercial environments. |
Pinout & Package
MAX966ESA+T is housed in an 8-pin SO (Small Outline) package (package code S8-2), measuring 4.9 mm × 6.0 mm × 1.75 mm, RoHS-compliant, with standard gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Open-drain output of Comparator A - requires external pull-up; sinks current when active low. |
| 2 | GND | Analog/digital ground reference - must be low-impedance connection for stable comparison. |
| 3 | N.C. | No internal connection - left unconnected; no routing or soldering required. |
| 4 | INA− | Inverting input of Comparator A - accepts signals across full common-mode range. |
| 5 | INA+ | Noninverting input of Comparator A - used with INA− to define threshold decision point. |
| 6 | INB− | Inverting input of Comparator B - electrically isolated from Comparator A; supports independent thresholds. |
| 7 | INB+ | Noninverting input of Comparator B - enables dual independent comparisons on one die. |
| 8 | VCC | Positive supply input - powers both comparators and internal circuitry; bypass with 100nF capacitor recommended. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input operation | Supports detection of signals from –0.25V to VCC–0.25V - eliminates need for input biasing in low-voltage systems. |
| Ultra-low quiescent current | 6.0–10.0 µA per comparator - enables continuous monitoring in energy-harvesting or coin-cell applications. |
| Open-drain output architecture | Allows pull-up to voltage higher than VCC (up to +6V) - simplifies level translation between 1.8V logic and 3.3V/5V domains. |
| Robust ESD tolerance | ±2000V HBM - protects against handling damage during PCB assembly and field deployment. |
| Short-circuit tolerant outputs | Continuous sink capability to GND or VCC - prevents latch-up or damage during transient faults or miswiring. |
Applications
| Battery Low-Voltage Monitor | Window Comparator for Sensor Thresholds |
|---|---|
Use Scenario: Monitoring 2-cell alkaline battery voltage (2.0V–3.2V) to trigger shutdown before deep discharge. IC Role / Device Role / Timing Role: Dual comparator independently compares battery voltage against upper and lower thresholds using resistor dividers. Use Value: Prevents system brownout and extends usable battery capacity by enabling graceful power-down at defined voltage boundaries. | Use Scenario: Detecting whether temperature sensor output stays within safe operational band (e.g., 25°C–75°C). IC Role / Device Role / Timing Role: One comparator monitors high limit, the other low limit; outputs combined via external logic to assert "in-window" status. Use Value: Enables fail-safe thermal management without microcontroller intervention, reducing firmware complexity and latency. |
| Mobile Device Power Sequencing | Ground-Sensing Fault Detector |
Use Scenario: Validating proper ramp-up of multiple supply rails (e.g., VDDIO, VDDCORE) before enabling processor reset. IC Role / Device Role / Timing Role: Each comparator verifies individual rail reaches target threshold; outputs feed OR-gate to generate global "power OK" signal. Use Value: Ensures deterministic boot sequence and avoids metastability or latch-up caused by out-of-spec power sequencing. | Use Scenario: Detecting loss of ground continuity in automotive body control modules due to corrosion or broken chassis bonds. IC Role / Device Role / Timing Role: Compares voltage drop across a sense resistor between system ground and chassis ground to detect high-resistance faults. Use Value: Provides early warning of grounding degradation before safety-critical functions are compromised. |
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 per comparator), rail-to-rail I/O, no internal reference, but includes internal hysteresis (6.5 mV typ) | Requires no external hysteresis network; better noise immunity in noisy environments | Select TLV3702IDR when fixed hysteresis suffices and layout simplicity outweighs ultra-low current needs. |
| LMV7235M5X | Lower propagation delay (120 ns), higher supply current (55 µA), open-drain output, rail-to-rail input, no reference | Optimized for fast response in event-driven wake-up circuits, not ultra-low-power standby | Choose LMV7235M5X where sub-microsecond timing is critical and average current budget allows >50 µA. |
Compared with MAX966ESA+T, TLV3702IDR offers built-in hysteresis and simpler design at modest current cost, while LMV7235M5X trades 7× higher supply current for 80× faster response-making each suitable for distinct low-power vs. high-speed dual-comparator roles.
Availability
MAX966ESA+T is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable medical devices, and industrial sensor interfaces requiring stable component supply across long production lifecycles.
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, mixed-signal, and power-management ICs for demanding industrial, automotive, and communications applications.
The MAX965–MAX970 family was engineered specifically for micropower, ultra-low-voltage comparator functions in space- and energy-constrained portable systems-emphasizing rail-to-rail operation below 2V and minimal quiescent current.
FAQ
What is the maximum allowable pull-up voltage on the open-drain outputs of the MAX966ESA+T?
The MAX966ESA+T open-drain outputs tolerate continuous pull-up voltages up to +6.0V relative to GND, regardless of VCC level. This allows interfacing with higher-voltage logic families (e.g., 5V TTL) while powered from a lower supply such as +3.3V or +1.8V-enabling robust voltage-level translation without additional components.
Does the MAX966ESA+T include an internal voltage reference?
No, the MAX966ESA+T does not include an internal voltage reference. Unlike MAX965/MAX967/MAX968/MAX969, it lacks REF and HYST pins. External reference sources (e.g., precision divider, bandgap IC) must be provided for threshold generation, and hysteresis requires external positive-feedback resistor networks.
Can the MAX966ESA+T operate from a 1.5V supply?
The MAX966ESA+T is specified for operation from +1.6V to +5.5V. At 1.5V, functionality is not guaranteed: input common-mode range remains rail-to-rail, but propagation delay increases significantly, output sink capability degrades, and supply current drops unpredictably. For reliable operation, maintain VCC ≥ +1.6V as stated in the Absolute Maximum Ratings table.
What is the input offset voltage specification for MAX966ESA+T over temperature?
The 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 4.0 mV (SO package). This defines the smallest resolvable voltage difference between IN+ and IN− under worst-case conditions.
Is the MAX966ESA+T pin-compatible with other devices in the MAX965–MAX970 family?
No, the MAX966ESA+T is not pin-compatible with MAX965, MAX967, or MAX968 in the same 8-pin SO package. While all share the same physical footprint (S8-2), pin functions differ: MAX966 omits REF and HYST pins (replaced by N.C. and INB±), whereas MAX965 includes REF/HYST and only one comparator. Direct substitution requires PCB redesign.
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:
- Active
- 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.
MAX966ESA+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…
