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Analog Devices Inc./Maxim Integrated MAX965ESA+T
- Part No.:
- MAX965ESA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX965ESA+T.pdf
- Description:
- IC COMPARATOR 1 W/VOLT REF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:855
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Product details
Overview
MAX965ESA+T from Maxim Integrated is a single, micropower, rail-to-rail input/output comparator with integrated 1.235V ±1.5% reference and programmable hysteresis. It operates from +1.6V to +5.5V, draws only 7.0–12 µA supply current, features open-drain output capable of sinking beyond VCC up to 6V, and is specified for -40°C to +85°C. It is used in ultra-low-voltage battery monitoring and voltage-level translation circuits.
For engineers reviewing the MAX965ESA+T datasheet, MAX965ESA+T pinout, MAX965ESA+T application, or MAX965ESA+T equivalent, key selection factors include its 1.6V minimum supply, 10 µs propagation delay (50mV overdrive), ±1 mV typical input hysteresis, rail-to-rail common-mode input range (-0.25V to VCC), and compatibility with 2-cell battery systems requiring stable threshold detection under varying load conditions.
Technical Context
The MAX965ESA+T implements a low-voltage CMOS comparator core with bandgap-based 1.235V reference and dedicated HYST pin for external hysteresis programming via two resistors. Its input stage supports full rail-to-rail common-mode operation down to -0.25V, enabling direct sensing at ground or supply rails.
The open-drain output stage allows flexible pull-up to voltages up to 6V independent of VCC, supporting level-shifting between disparate supply domains. Internal hysteresis is fixed at ±1 mV when HYST is tied to REF; programmable hysteresis up to ±50 mV is enabled by resistor divider from REF to GND.
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 Supply Current | 7.0–12 µA - ensures >1-year battery life in always-on portable threshold detectors. |
| Input Offset Voltage | 4.0 mV (µMAX, -40°C to +85°C) - sets minimum detectable voltage differential in precision window applications. |
| Propagation Delay | 10 µs (50mV overdrive) - supports response to slow-moving battery voltage sag or supply brownout events. |
| Reference Voltage Accuracy | ±1.5% (0°C to +85°C), ±2.5% (-40°C to +85°C) - provides stable trip point across commercial temperature range. |
| Output Sink Capability | VOL = 0.2V @ 100 µA (1.6V < VCC < 2.7V) - ensures clean logic-low assertion into standard TTL/CMOS loads. |
| Common-Mode Input Range | -0.25V to VCC - permits direct ground-referenced or supply-sensing configurations without level shifters. |
Pinout & Package
MAX965ESA+T is housed in an 8-pin SO (Small Outline) package with 1.27 mm pitch, JEDEC MS-012AC compliant, RoHS-compliant, and moisture sensitivity level 1.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Open-drain comparator output - requires external pull-up; sinks up to 6V above GND. |
| 2 | VCC | Positive supply input - accepts +1.6V to +5.5V; powers internal reference and comparator core. |
| 3 | REF | 1.235V ±1.5% reference output - sources up to 50 µA; bypass with 0.1 µF for noise reduction. |
| 4 | HYST | Hysteresis control input - connects to REF for default ±1 mV hysteresis or to resistor divider for programmable hysteresis up to ±50 mV. |
| 5 | IN− | Inverting input - accepts signals from -0.25V to VCC; used for threshold comparison against REF or external voltage. |
| 6 | IN+ | Noninverting input - accepts signals from -0.25V to VCC; typically driven by resistor divider for battery voltage monitoring. |
| 7 | N.C. | No connection - not internally bonded; must be left floating or tied to GND per layout best practice. |
| 8 | GND | Analog ground reference - shared return path for VCC, REF, and signal inputs; requires low-impedance PCB connection. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input common-mode range | Supports direct sensing at ground or supply rail - eliminates need for input biasing networks in supply-monitoring designs. |
| Programmable hysteresis via HYST pin | Enables precise noise immunity tuning (±1 mV to ±50 mV) using two external resistors - avoids external op-amp hysteresis circuits. |
| Integrated 1.235V ±1.5% reference | Provides stable, temperature-compensated trip point without external voltage reference IC - reduces BOM count and board area. |
| Open-drain output with 6V tolerance | Allows level translation between 1.8V/3.3V logic and 5V systems - simplifies interface to microcontrollers or FPGAs with mixed I/O voltages. |
| Ultra-low 7 µA supply current | Extends battery life in always-on portable devices - suitable for coin-cell-powered IoT sensors and wearables. |
Applications
| Battery Voltage Monitor | 2-Cell to TTL Level Shifter |
|---|---|
|
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: Single comparator compares divided battery voltage against internal 1.235V reference to generate digital alert signal. Use Value: Eliminates external reference and reduces quiescent current vs. op-amp-based solutions - extends operational life by >30% in intermittent-readout systems. |
Use Scenario: Converting analog 2-cell battery voltage (2.0V–3.2V) into clean 0V/5V TTL-compatible logic signal for MCU input. IC Role / Device Role / Timing Role: Comparator acts as rail-to-rail input threshold detector with open-drain output pulled to 5V. Use Value: Enables direct interfacing between low-voltage battery domain and 5V logic without level-shifter IC - saves 2–3 mm² PCB area and one passive component. |
| Ground-Sensing Threshold Detector | IR Receiver Signal Discriminator |
|
Use Scenario: Detecting current flow through shunt resistor by sensing voltage drop referenced to system ground. IC Role / Device Role / Timing Role: Comparator monitors shunt voltage at IN− while IN+ is tied to REF - detects sub-10 mV thresholds with rail-to-rail capability. Use Value: Supports ground-referenced current sensing without high-side amplifier - avoids isolation components and improves accuracy at low currents. |
Use Scenario: Converting photodiode current from IR remote receiver into clean digital pulse train for microcontroller decoding. IC Role / Device Role / Timing Role: Comparator converts analog photodiode signal (across R1) into square wave; HYST pin adds noise immunity against ambient light interference. Use Value: Integrates reference and hysteresis in single 8-pin SO package - replaces discrete comparator + reference + RC network - reduces bill-of-materials by 3 parts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3691IDBVR | Single micropower comparator (320 nA), no internal reference, rail-to-rail input, push-pull output. | Lacks integrated reference and programmable hysteresis; requires external reference and hysteresis network for same functionality. | Select when ultra-low power (<1 µA) is critical and external reference is already present in system. |
| MAX9060ASA+ | Single comparator with 1.2V reference, 1.8V min supply, 1.2 µA supply current, open-drain output. | Lower supply current but ±3% reference accuracy and no hysteresis programming - less precise for battery end-of-life detection. | Select for cost-sensitive, lower-accuracy battery monitor where 1.2V trip point suffices and hysteresis is fixed. |
Compared with TLV3691IDBVR and MAX9060ASA+, the MAX965ESA+T uniquely combines integrated ±1.5% reference, programmable hysteresis, and 1.6V operation in an 8-pin SO package - making it optimal for space-constrained, precision 2-cell battery monitoring where BOM reduction and design simplicity are prioritized.
Availability
MAX965ESA+T is available at Aetrix Electronics and suitable for battery voltage monitoring, portable system power management, and voltage-level translation applications requiring stable component supply across industrial and consumer product lifecycles.
Supply support for MAX965ESA+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 communications markets.
The MAX965ESA+T belongs to the MAX965–MAX970 family of micropower comparators engineered specifically for ultra-low-voltage, battery-powered systems requiring rail-to-rail operation, integrated reference, and programmable hysteresis.
FAQ
What is the minimum operating voltage for MAX965ESA+T?
The MAX965ESA+T is fully specified for operation down to +1.6V. While comparator functionality may persist down to +1.0V, reference accuracy degrades below +1.5V and output sink capability diminishes. For reliable 1.235V reference operation and guaranteed performance, maintain VCC ≥ +1.6V. The MAX965ESA+T datasheet specifies electrical characteristics over +1.6V to +5.5V.
Does MAX965ESA+T require an external pull-up resistor on its output?
Yes, MAX965ESA+T features an open-drain output (pin 1) and requires an external pull-up resistor to define the high-state voltage level. The pull-up can connect to any voltage up to +6.0V, enabling level translation. Typical values range from 10 kΩ to 100 kΩ depending on speed and drive requirements. Without pull-up, the output remains undefined in the high state.
Can MAX965ESA+T be used without connecting the HYST pin?
Yes - the HYST pin (pin 4) must be connected to REF (pin 3) if programmable hysteresis is not required. This configuration enables the device's internal ±1 mV hysteresis, preventing oscillation near threshold. Leaving HYST floating is not recommended and may cause erratic behavior due to leakage-induced voltage drift.
What is the temperature range specification for MAX965ESA+T?
The MAX965ESA+T is rated for operation from -40°C to +85°C, matching the "E" grade designation in its ordering code. All electrical specifications - including supply current (7.0–12 µA), input offset voltage (≤6.0 mV), and reference accuracy (±2.5%) - are guaranteed across this extended industrial temperature range.
Is the reference output of MAX965ESA+T capable of driving external circuitry?
Yes, the REF pin (pin 3) can source up to 50 µA while maintaining ±1.5% accuracy over 0°C to +85°C. It is commonly used to bias resistor dividers or drive the HYST pin. For noise-sensitive applications, bypass REF to GND with a 0.1 µF ceramic capacitor placed close to the package. Loading beyond 50 µA risks reference droop and accuracy loss in the MAX965ESA+T.
MAX965ESA+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:
- with Voltage Reference
- Number of Elements:
- 1
- 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):
- 12µA
- 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
MAX965ESA+T FAQ
1.How can I place an order for MAX965ESA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX965ESA+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 MAX965ESA+T reliable?
The price and inventory of MAX965ESA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX965ESA+T is usually 5 days.
3.What payment methods are accepted for MAX965ESA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX965ESA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX965ESA+T?
MAX965ESA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX965ESA+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 MAX965ESA+T?
For technical support, including MAX965ESA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX965ESA+T requirements.
6.How does Aetrix verify that MAX965ESA+T is sourced from the original manufacturer or authorized distributors?
All MAX965ESA+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 MAX965ESA+T meets industry standards.
7.What is the process for return or replacement of MAX965ESA+T?
All MAX965ESA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX965ESA+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 MAX965ESA+T part is unused and in its original packaging.
Return procedure for MAX965ESA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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