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Analog Devices Inc./Maxim Integrated MAX982CSA-T
- Part No.:
- MAX982CSA-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX982CSA-T.pdf
- Description:
- IC COMPARATOR 2 W/VOLT REF 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,687
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Product details
Overview
MAX982CSA-T from Maxim Integrated is a dual, ultra-low-power, open-drain comparator with internal 1.182V ±2% voltage reference and programmable hysteresis via HYST pin. It operates from single 2.5V–11V or dual ±1.25V–±5.5V supplies, draws ≤4µA supply current over temperature, and supports rail-to-rail input voltage range (V− to V+ − 1.3V). Used in battery-powered threshold detection and level translation circuits.
For engineers reviewing the MAX982CSA-T datasheet, MAX982CSA-T pinout, MAX982CSA-T application, or MAX982CSA-T equivalent, this page delivers verified specifications, package mapping, functional pin roles, real-world use cases, and validated alternative options for low-power comparator selection in space- and energy-constrained designs.
Technical Context
The MAX982CSA-T integrates two independent comparators sharing a common reference and hysteresis control. Its HYST pin enables simple resistor-based hysteresis programming without external feedback, with input range from REF − 50mV to REF. Each comparator features open-drain output sinking to V−, enabling wire-OR configurations and bipolar-to-single-ended level shifting.
It uses an internal bandgap reference referenced to V− (not GND), delivering 1.182V ±2% accuracy over 0°C to +70°C. Input common-mode range extends to within 1.3V of V+, and propagation delay is 12µs (10mV overdrive) at 5V supply - optimized for micropower sensing where speed and quiescent current are jointly constrained.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | Single: 2.5V–11V; dual: ±1.25V–±5.5V - supports direct integration into 3V/5V systems and legacy bipolar rails. |
| Quiescent Supply Current | ≤4µA max over temperature - enables multi-year operation on coin-cell batteries in always-on monitoring. |
| Reference Voltage Accuracy | 1.182V ±2% (0°C to +70°C) - provides stable threshold baseline without external precision reference. |
| Input Common-Mode Range | V− to V+ − 1.3V - allows direct sensing of signals near supply rails without level-shifting circuitry. |
| Propagation Delay | 12µs (10mV overdrive, 100pF load, 1MΩ pullup) - balances response time and power in low-frequency event detection. |
| Output Type | Open-drain, sinks to V− - enables flexible pullup voltage selection and wired-OR logic for multi-comparator systems. |
| Hysteresis Control | HYST pin accepts REF − 50mV to REF - simplifies noise-immune threshold setting with two resistors, no op-amp feedback loop. |
Pinout & Package
MAX982CSA-T is housed in an 8-pin SO (Small Outline) package with gull-wing leads, JEDEC MS-012AC compliant, body size 4.9mm × 3.9mm × 1.75mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Comparator A open-drain output; sinks current to V− - used for active-low event signaling or wired-OR bus. |
| 2 | V− | Negative supply; connect to GND in single-supply mode - defines reference point for REF and input common-mode range. |
| 3 | INA+ | Noninverting input of Comparator A - accepts signals up to V+ − 1.3V; high-impedance (±0.01nA leakage). |
| 4 | INA− | Inverting input of Comparator A - paired with INA+ for differential or single-ended threshold comparison. |
| 5 | HYST | Hysteresis control input; sets hysteresis band width by voltage relative to REF - enables robust noise rejection without external components. |
| 6 | REF | 1.182V bandgap reference output referenced to V− - supplies precise threshold source for both comparators; ±2% tolerance. |
| 7 | V+ | Positive supply - powers internal circuitry and determines output sink capability and input range upper limit. |
| 8 | OUTB | Comparator B open-drain output; sinks current to V− - independent of OUTA; supports dual-threshold or window detection. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | ≤4µA over full temperature range - extends battery life in portable medical sensors and IoT endpoint nodes. |
| Integrated ±2% voltage reference | 1.182V referenced to V− - eliminates need for external reference IC or resistor divider, reducing BOM count and layout area. |
| Programmable hysteresis via HYST pin | Adjustable 0–100mV hysteresis band using two resistors - prevents chatter in noisy environments without complex feedback design. |
| Wide supply range & rail-aware inputs | Operates from 2.5V to 11V single supply; inputs valid to V+ − 1.3V - interfaces directly with Li-ion, 3.3V, and 5V domains without attenuation. |
| Open-drain outputs sinking to V− | Enables level translation between disparate voltage domains (e.g., ±5V input → 3.3V logic) and wired-OR alarm buses. |
Applications
| Battery Voltage Monitor | Power-Good Window Detector |
|---|---|
Use Scenario: Monitoring lithium-polymer cell voltage during discharge to trigger low-battery warning before cutoff. IC Role / Device Role / Timing Role: Dual comparator compares cell voltage against upper (4.2V) and lower (3.0V) thresholds using resistor dividers and shared REF. Use Value: Eliminates external reference and reduces component count by 3–4 parts versus discrete solutions; hysteresis prevents false triggers near threshold crossings. | Use Scenario: Validating regulated 5V supply stability in embedded controllers by detecting undervoltage (<4.75V) and overvoltage (>5.25V). IC Role / Device Role / Timing Role: MAX982CSA-T configured as window comparator with HYST-adjusted thresholds; OUTA and OUTB wired-OR to generate active-high POWER_GOOD signal. Use Value: Achieves <15µs total response with <4µA quiescent draw - critical for low-power sleep/wake architectures where supply integrity must be verified rapidly on wake-up. |
| Level Translator (±5V → 3.3V) | Low-Power Oscillator Enable |
Use Scenario: Converting analog signals from ±5V industrial sensor outputs to 3.3V microcontroller-compatible logic levels. IC Role / Device Role / Timing Role: Comparator A compares input against 0V (ground-referenced via V− = GND), with REF used to bias pullup; open-drain output pulled to 3.3V. Use Value: Supports bipolar input range without clamping diodes or op-amp buffers; 11V output swing allows safe interfacing even when 3.3V rail is off. | Use Scenario: Enabling/disabling a crystal oscillator only when system voltage exceeds startup threshold (e.g., >2.8V). IC Role / Device Role / Timing Role: Single comparator channel monitors VCC via resistor divider; HYST pin adds 50mV hysteresis to prevent oscillation during slow-rising power rails. Use Value: Draws <4µA during monitoring phase - negligible impact on cold-start timing; eliminates need for dedicated supervisor IC in cost-sensitive designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX983CSA | Dual comparator with same 1.182V ±2% reference and HYST pin, but configured as window detector (shared IN+ for both comparators). | Optimized for single-input window detection (e.g., supply voltage monitoring); less flexible for independent dual-threshold use. | Select MAX983CSA when both comparators monitor the same input signal against high/low bounds; choose MAX982CSA-T for fully independent channels. |
| TLV3702IDR | CMOS dual comparator with rail-to-rail inputs, 1.8V–16V supply, but no integrated reference; 850nA typical supply current (vs. 4µA max for MAX982CSA-T). | Requires external reference or resistor divider for precise thresholds; better suited for higher-speed, lower-voltage (1.8V) applications. | Choose TLV3702IDR when supply voltage drops below 2.5V or when sub-1µA quiescent current is mandatory; MAX982CSA-T preferred when reference integration and hysteresis simplicity are prioritized. |
Compared with MAX983CSA and TLV3702IDR, the MAX982CSA-T uniquely combines guaranteed ≤4µA max supply current, integrated ±2% reference, and independent dual-channel architecture with programmable hysteresis - making it optimal for battery-critical, space-constrained dual-threshold detection where BOM reduction and design simplicity are essential.
Availability
MAX982CSA-T is available at Aetrix Electronics and suitable for battery-powered systems, threshold detectors, level translators, and oscillator enable circuits requiring stable component supply across commercial temperature range (0°C to +70°C).
Supply support for MAX982CSA-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, interface, and reliability-critical applications.
The MAX982CSA-T belongs to the MAX98x series of micropower comparators engineered specifically for ultra-low-power sensing and monitoring in portable, battery-operated, and energy-harvesting systems.
FAQ
What is the maximum supply voltage for MAX982CSA-T?
The MAX982CSA-T supports a maximum total supply voltage of 11V - whether operated from a single 2.5V–11V supply or dual ±1.25V–±5.5V rails. Exceeding 11V risks permanent damage per absolute maximum ratings. At 11V, the output can swing up to 11V above V−, enabling level translation even when the 11V rail is unpowered.
Does MAX982CSA-T include an internal voltage reference?
Yes, the MAX982CSA-T integrates a 1.182V bandgap voltage reference referenced to V−, with ±2% accuracy over 0°C to +70°C. This reference is shared by both comparators and accessible at the REF pin. It sources up to 25µA and sinks up to 15µA, eliminating the need for external reference components in most threshold-detection applications.
How is hysteresis implemented on MAX982CSA-T?
Hysteresis on the MAX982CSA-T is implemented via the HYST pin: connect R1 between REF and HYST, and R2 between HYST and V−. The hysteresis band (VHB) ≈ 2 × (VREF − VHYST), adjustable from 0 to 100mV. This method avoids external feedback loops, reduces component count, and ensures consistent hysteresis across both comparators in the MAX982CSA-T.
What is the input voltage range specification for MAX982CSA-T?
The guaranteed input common-mode voltage range for MAX982CSA-T is from V− to V+ − 1.3V. Inputs tolerate overvoltage up to V+ + 0.3V and undervoltage down to V− − 0.3V without damage. This rail-aware range allows direct connection to signals near supply rails - critical for battery monitoring and industrial sensor interfaces where signal conditioning is impractical.
Can MAX982CSA-T operate from a 3V single supply?
Yes, the MAX982CSA-T is fully specified for 3V single-supply operation (V+ = 3V, V− = GND). At 3V, supply current remains ≤4µA, input offset voltage is ±10mV, and propagation delay is 12µs (10mV overdrive). Its ability to function down to 2.5V makes it compatible with Li-ion, LiFePO₄, and regulated 3.3V/3.0V systems without performance compromise.
MAX982CSA-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:
- with Voltage Reference
- Number of Elements:
- 2
- Output Type:
- -
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 11V, ±1.25V ~ 5.5V
- :
- 10mV @ 5V
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 6µA
- Current - Quiescent (Max):
- 80dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- 50mV
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
MAX982CSA-T FAQ
1.How can I place an order for MAX982CSA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX982CSA-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 MAX982CSA-T reliable?
The price and inventory of MAX982CSA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX982CSA-T is usually 5 days.
3.What payment methods are accepted for MAX982CSA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX982CSA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX982CSA-T?
MAX982CSA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX982CSA-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 MAX982CSA-T?
For technical support, including MAX982CSA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX982CSA-T requirements.
6.How does Aetrix verify that MAX982CSA-T is sourced from the original manufacturer or authorized distributors?
All MAX982CSA-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 MAX982CSA-T meets industry standards.
7.What is the process for return or replacement of MAX982CSA-T?
All MAX982CSA-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX982CSA-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 MAX982CSA-T part is unused and in its original packaging.
Return procedure for MAX982CSA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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