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Analog Devices Inc./Maxim Integrated MAX983CUA+T
- Part No.:
- MAX983CUA+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX983CUA+T.pdf
- Description:
- IC COMPARATOR 2 W/VOLT REF 8UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:3,408
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Product details
Overview
MAX983CUA+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, features 4µA max supply current over temperature, 12µs propagation delay (10mV overdrive), and rail-to-rail input range down to V−. It is used in battery-powered threshold detectors and window comparators.
For engineers reviewing the MAX983CUA+T datasheet, MAX983CUA+T pinout, MAX983CUA+T application, or MAX983CUA+T equivalent, this page delivers verified specifications, package-confirmed pin functions, real-world use cases for low-power sensing, and two validated alternative parts with documented technical and application differences.
Technical Context
The MAX983CUA+T integrates two independent comparators sharing one internal bandgap reference and a dedicated HYST pin enabling simple resistor-based hysteresis programming without external feedback. Its open-drain outputs sink current to V− (not GND), supporting dual-supply operation and level translation between bipolar and single-ended domains.
Input common-mode range extends from V− to (V+ − 1.3V); inputs tolerate ±0.3V beyond rails. The reference output (REF) is referenced to V−, not GND, and delivers ±2% accuracy over 0°C to +70°C with 25µA source/15µA sink capability - critical for precision threshold generation in portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | Single 2.5V–11V or dual ±1.25V–±5.5V - supports direct integration into 3V/5V systems and split-rail analog front-ends. |
| Quiescent Supply Current | ≤4µA over temperature - enables multi-year operation on coin-cell batteries in IoT sensors and wearables. |
| Reference Voltage Accuracy | 1.182V ±2% (0°C to +70°C) - provides stable, factory-trimmed threshold without external components. |
| Propagation Delay | 12µs at 10mV overdrive - balances speed and power for wake-up detection and slow-varying signal monitoring. |
| Input Common-Mode Range | V− to (V+ − 1.3V) - allows direct sensing of signals near ground or rail in single-supply configurations. |
| Output Type | Open-drain, sinks to V− - enables wire-OR logic, level shifting, and compatibility with mixed-voltage digital interfaces. |
| Hysteresis Control | HYST pin accepts REF − 0.05V to REF - permits precise, resistor-programmable hysteresis band up to 100mV. |
Pinout & Package
MAX983CUA+T is housed in an 8-pin µMAX package (3mm × 3mm, 0.8mm height), pin-compatible with industry-standard SO and DIP variants. The package supports reflow soldering and is rated for commercial temperature range (0°C to +70°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - OUTA | Comparator A open-drain output | Sinks current to V−; requires external pullup for logic-high assertion; enables wired-OR configuration. |
| 2 - V− | Negative supply / reference ground | Connect to GND in single-supply mode; REF and HYST are referenced to this node, not system GND. |
| 3 - INA+ | Noninverting input of Comparator A | Accepts signals from V− to (V+ − 1.3V); input leakage < ±5nA ensures high-impedance sensing. |
| 4 - INA− | Inverting input of Comparator A | Paired with INA+ for differential threshold comparison; offset voltage ≤ ±10mV. |
| 5 - HYST | Hysteresis control input | Programs hysteresis band by setting voltage between REF − 50mV and REF; no external op-amp needed. |
| 6 - REF | Internal 1.182V reference output | Referenced to V−, not GND; sources/sinks up to 25µA/15µA; must not be bypassed. |
| 7 - V+ | Positive supply | Accepts 2.5V–11V single or ±1.25V–±5.5V dual; powers comparator core and reference. |
| 8 - OUTB | Comparator B open-drain output | Functionally identical to OUTA; enables independent dual-threshold detection (e.g., window comparator). |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 4µA max over full temperature range - reduces standby power in always-on battery systems. |
| Integrated ±2% voltage reference | 1.182V referenced to V− - eliminates need for external reference IC or resistor divider in threshold circuits. |
| HYST pin for programmable hysteresis | Enables precise 0–100mV hysteresis band using only two resistors - prevents oscillation near thresholds without feedback networks. |
| Open-drain outputs sinking to V− | Supports true dual-supply operation and level translation between ±5V analog and 3.3V digital domains. |
| Rail-to-rail input capability | Inputs operate from V− to within 1.3V of V+ - simplifies interfacing with sensors and DACs without level-shifting buffers. |
Applications
| Battery Voltage Monitor | Power-Good Window Detector |
|---|---|
Use Scenario: Monitoring lithium-ion cell voltage during charge/discharge cycles in portable medical devices. IC Role / Device Role / Timing Role: Dual comparator compares battery voltage against upper (4.2V) and lower (3.0V) thresholds using resistor dividers and shared REF. Use Value: Enables accurate undervoltage/overvoltage shutdown with < ±10mV input offset and programmable hysteresis to prevent chatter near trip points. |
Use Scenario: Validating stable 5V supply in industrial controllers before enabling FPGA configuration. IC Role / Device Role / Timing Role: MAX983CUA+T configured as window comparator asserts active-high POWER_GOOD only when VIN stays within 4.75V–5.25V. Use Value: Delivers reliable power sequencing with 4µA supply current and open-drain outputs compatible with 3.3V logic enable pins. |
| Low-Power Wake-Up Sensor | Level Translator for Mixed-Supply Systems |
Use Scenario: Detecting motion-triggered IR signal above noise floor in battery-powered security sensors. IC Role / Device Role / Timing Role: Single comparator (OUTA) compares amplified IR signal to REF-derived threshold; HYST suppresses noise-induced false triggers. Use Value: Achieves sub-5µA total system wake-up circuit current while maintaining 12µs response to valid events. |
Use Scenario: Converting ±5V op-amp output to 3.3V logic-compatible signal in data acquisition modules. IC Role / Device Role / Timing Role: MAX983CUA+T's V−-referenced REF and V−-sinking outputs interface directly between bipolar analog stage and unipolar digital domain. Use Value: Eliminates discrete level-shifter ICs; supports 11V output swing and rail-to-rail input without external biasing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX982CUA+T | Identical pinout, supply specs, and hysteresis architecture; same ±2% reference accuracy and 4µA max IQ. | No functional difference; MAX982CUA+T is single-comparator variant - requires two units for dual-channel use. | Select MAX983CUA+T when dual comparators in one package reduce board area and component count. |
| TLV3702IDR | Lower 1.2µA typical IQ but no integrated reference; rail-to-rail I/O; 360µs propagation delay at 10mV overdrive. | Requires external reference or resistor divider for threshold setting; slower response limits use in fast transient detection. | Choose TLV3702IDR only if ultra-low IQ dominates over reference integration and speed requirements. |
Compared with MAX982CUA+T (single-channel) and TLV3702IDR (no reference, higher latency), MAX983CUA+T uniquely delivers dual comparators, built-in ±2% reference, and 12µs response in one µMAX package - optimizing size, BOM count, and design simplicity for battery-critical threshold detection.
Availability
MAX983CUA+T is available at Aetrix Electronics and suitable for battery-powered systems, threshold detectors, window comparators, and level translators requiring stable component supply across industrial and medical OEM programs.
Supply support for MAX983CUA+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 demanding environments.
The MAX98x series targets ultra-low-power sensing and monitoring, delivering micropower comparators with integrated references and hysteresis control to simplify battery-operated system design.
FAQ
What is the reference voltage tolerance of MAX983CUA+T over temperature?
The MAX983CUA+T features a 1.182V internal bandgap reference with ±2% accuracy over the commercial temperature range (0°C to +70°C). This tolerance is specified in the Electrical Characteristics table under "Reference Voltage" for MAX981–MAX984 parts. The reference is referenced to V−, not GND, and its output remains stable across supply voltages from 2.5V to 11V.
Can MAX983CUA+T operate from a single 3V supply?
Yes, MAX983CUA+T operates from a single 2.5V to 11V supply - including 3V. At 3V, typical supply current is 3.4µA (C temp range), input common-mode range spans V− to (V+ − 1.3V) = 0V to 1.7V, and propagation delay increases slightly to ~14µs (10mV overdrive). All specifications in the 3V Electrical Characteristics table confirm full functionality at this voltage.
How is hysteresis programmed on MAX983CUA+T?
Hysteresis is programmed using 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. For example, setting VHYST = REF − 25mV yields ~50mV hysteresis. The MAX983CUA+T datasheet provides exact equations for R1/R2 selection based on desired VHB and IREF.
Does MAX983CUA+T require a bypass capacitor on the REF pin?
No - the MAX983CUA+T datasheet explicitly states "Do not bypass the REF output." Bypassing REF can destabilize the internal reference and increase noise. Instead, layout best practices include short traces, ground plane isolation, and avoiding routing noisy signals (especially outputs) near REF to prevent crosstalk that degrades the 1.182V reference's ±2% accuracy and 100µVRMS noise performance.
What is the maximum output sink current for MAX983CUA+T?
The MAX983CUA+T open-drain outputs (OUTA and OUTB) sink current to V−, not GND. At V+ = 5V and V− = 0V, output low voltage is ≤0.4V at 1.8mA sink current. Short-circuit sink current reaches ~25mA at V+ = 10V (see Typical Operating Characteristics Figure TOC15). The actual sink capability scales with V+, and the device tolerates continuous short-circuit conditions without damage.
MAX983CUA+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:
- 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-uMAX/uSOP
MAX983CUA+T FAQ
1.How can I place an order for MAX983CUA+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX983CUA+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 MAX983CUA+T reliable?
The price and inventory of MAX983CUA+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX983CUA+T is usually 5 days.
3.What payment methods are accepted for MAX983CUA+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX983CUA+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX983CUA+T?
MAX983CUA+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX983CUA+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 MAX983CUA+T?
For technical support, including MAX983CUA+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX983CUA+T requirements.
6.How does Aetrix verify that MAX983CUA+T is sourced from the original manufacturer or authorized distributors?
All MAX983CUA+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 MAX983CUA+T meets industry standards.
7.What is the process for return or replacement of MAX983CUA+T?
All MAX983CUA+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX983CUA+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 MAX983CUA+T part is unused and in its original packaging.
Return procedure for MAX983CUA+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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