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Analog Devices Inc./Maxim Integrated MAX984CSE+
- Part No.:
- MAX984CSE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX984CSE+.pdf
- Description:
- IC COMPARATR 4 W/VOLT REF 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,818
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Product details
Overview
The MAX984CSE+ from Maxim Integrated is a quad, ultra-low-power, open-drain comparator with internal 1.182V ±2% voltage reference and no integrated hysteresis. It operates from single 2.5V–11V or dual ±1.25V–±5.5V supplies, features rail-to-rail input range (V− to V+ − 1.3V), 12µs propagation delay at 10mV overdrive, and separate GND pin for output stage-enabling bipolar-to-single-ended level translation in battery-powered threshold detection systems.
For engineers reviewing the MAX984CSE+ datasheet, MAX984CSE+ pinout, MAX984CSE+ application, or MAX984CSE+ equivalent, this page delivers verified technical context, exact pin functions, real-world use cases in window detectors and power-good monitoring, and two validated alternative parts with documented functional and application differences.
Technical Context
The MAX984CSE+ integrates four independent comparators sharing a common internal bandgap reference referenced to V−, not GND. Its open-drain outputs sink current to GND (not V−), enabled by a dedicated GND pin-making it suitable for level-shifting between bipolar and single-ended domains without external level translators.
Unlike MAX981–MAX983 variants, the MAX984CSE+ lacks a HYST pin and internal hysteresis circuitry; hysteresis must be implemented externally via positive feedback. The reference output supports up to 25µA source / 15µA sink and exhibits ≤100µVRMS noise (100Hz–100kHz) across 0°C to +70°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Comparator Count | 4 independent open-drain comparators in one 16-pin package |
| Supply Range | Single: 2.5V–11V; Dual: ±1.25V–±5.5V - supports direct interface with ±5V analog stages and 3.3V/5V logic |
| Reference Accuracy | 1.182V ±2% over 0°C to +70°C - enables stable threshold generation without external precision reference |
| Input Common-Mode Range | V− to V+ − 1.3V - allows sensing near supply rails, critical for undervoltage/overvoltage detection |
| Propagation Delay | 12µs typical at 10mV overdrive - sufficient for power-supply sequencing and slow-control loop monitoring |
| Output Sink Capability | 50mA max per output, VOUT = 0.4V @ IOUT = 1.8mA - drives standard pull-up resistors and small logic loads directly |
| Quiescent Current | 8.0µA max at 3V supply - enables multi-year operation in coin-cell–powered IoT sensors |
Pinout & Package
MAX984CSE+ uses a 16-pin narrow SOIC (SOICN) package with 0.150" width, JEDEC MS-012AC compliant, body size 10.3mm × 7.5mm × 1.75mm.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTA | Open-drain output of Comparator A; sinks to GND - used for active-low power-good or undervoltage flag |
| 2 | OUTB | Open-drain output of Comparator B; sinks to GND - paired with OUTA in window detector configurations |
| 3 | OUTC | Open-drain output of Comparator C; sinks to GND - supports triple-threshold or redundant monitoring schemes |
| 4 | OUTD | Open-drain output of Comparator D; sinks to GND - enables independent status signaling (e.g., battery low + thermal alert) |
| 5 | INA+ | Noninverting input of Comparator A - connects to divided system voltage for precise threshold comparison |
| 6 | INA− | Inverting input of Comparator A - ties to reference or resistor divider node for hysteresis implementation |
| 7 | INB+ | Noninverting input of Comparator B - used for second threshold (e.g., overvoltage detection) |
| 8 | INB− | Inverting input of Comparator B - shares REF or separate reference for independent trip points |
| 9 | V− | Negative supply rail - connect to GND in single-supply mode; enables true dual-supply operation down to ±1.25V |
| 10 | REF | 1.182V reference output referenced to V− - powers external resistor dividers; not bypassed |
| 11 | INC+ | Noninverting input of Comparator C - supports third monitoring channel (e.g., auxiliary rail or temperature sensor output) |
| 12 | INC− | Inverting input of Comparator C - accepts scaled analog signal or fixed reference |
| 13 | IND+ | Noninverting input of Comparator D - enables fourth independent decision point |
| 14 | IND− | Inverting input of Comparator D - configurable as high-impedance sense node |
| 15 | GND | Dedicated ground for output stage - isolates output switching noise from analog reference and inputs |
| 16 | V+ | Positive supply rail - accepts up to 11V; determines output voltage ceiling and sink strength |
Key Features
| Feature | Design Value |
|---|---|
| Quad open-drain comparators with shared reference | Reduces component count in multi-rail monitoring; eliminates need for four discrete references |
| Dedicated GND pin for output stage | Enables clean level shifting from ±5V analog domain to 3.3V digital logic without external MOSFETs |
| Ultra-low 8µA supply current at 3V | Extends battery life in portable medical devices and wireless sensor nodes beyond 5 years on CR2032 |
| Rail-to-rail input range (V− to V+ − 1.3V) | Accurately monitors supply voltages down to 100mV above V−, critical for brownout detection |
| 1.182V ±2% internal reference (0°C to +70°C) | Provides stable trip points without trimming or calibration; ±2% tolerance accommodates cost-sensitive industrial designs |
Applications
| Power-Good Monitoring | Window Voltage Detection |
|---|---|
Use Scenario: Verifying stable operation of microcontroller core and I/O supplies during power-up and brownout conditions in embedded controllers. IC Role / Device Role / Timing Role: Quad comparator compares VCC_CORE, VCC_IO, VCC_ANALOG, and backup battery against internal 1.182V reference scaled by precision resistors. Use Value: Single IC replaces four discrete comparators and one external reference, reducing BOM count by 5 parts and PCB area by >30%. | Use Scenario: Detecting when a 5V system rail stays within safe 4.5V–5.5V window using two comparators wired in OR configuration. IC Role / Device Role / Timing Role: Comparator A triggers low on undervoltage (OUTA); Comparator B triggers low on overvoltage (OUTB); outputs wire-ORed to generate active-high POWER_GOOD. Use Value: Eliminates need for external logic gates or microcontroller polling; response time <12µs ensures fast fault isolation. |
| Battery Switchover Control | Level Translation Interface |
Use Scenario: Seamlessly switching from wall adapter to Li-ion backup battery when main supply drops below 4.0V in portable instrumentation. IC Role / Device Role / Timing Role: One comparator monitors adapter voltage; another monitors battery voltage; third controls P-channel MOSFET gate via open-drain output. Use Value: Zero forward-voltage drop vs. diode-based solutions; extends runtime by eliminating ~0.3V dropout loss per path. | Use Scenario: Converting ±5V op-amp outputs to 0–3.3V logic-compatible signals in mixed-signal test equipment. IC Role / Device Role / Timing Role: Comparator compares bipolar input against 0V (GND) or mid-rail reference; open-drain output pulled to 3.3V logic rail. Use Value: Dedicated GND pin prevents reference contamination; 11V output swing allows direct interface with 5V-tolerant I/O. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX974CSE | Same 16-pin SOIC package, but ±1% reference accuracy and includes internal hysteresis control logic | Preferred where tighter threshold stability (<±12mV error) and simplified hysteresis design are required | Select MAX974CSE when reference accuracy or integrated hysteresis reduces design risk in safety-critical power monitoring |
| LM339DR | Quad comparator with no internal reference; requires external 1.182V source; higher 2mA quiescent current | Suitable for cost-driven, non-battery applications where reference is already available on board | Choose LM339DR only if existing BOM includes precision reference and power budget exceeds 100µA |
Compared with MAX974CSE, the MAX984CSE+ trades ±1% reference accuracy and internal hysteresis for lower cost and identical footprint; versus LM339DR, it integrates reference and cuts supply current by 250×-making it optimal for space-constrained, battery-operated systems requiring four independent thresholds.
Availability
MAX984CSE+ is available at Aetrix Electronics and suitable for battery-powered systems, power-good monitoring, window voltage detection, and level translation interfaces requiring stable component supply and long-term manufacturability.
Supply support for MAX984CSE+ 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 connectivity in demanding industrial, automotive, and medical applications.
The MAX971–MAX984 family was engineered for ultra-low-power, rail-to-rail comparator applications in energy-constrained systems-emphasizing micropower operation, integrated references, and flexible supply configurations.
FAQ
What is the reference voltage tolerance of the MAX984CSE+ over its operating temperature range?
The MAX984CSE+ features an internal 1.182V bandgap reference with ±2% accuracy over the commercial temperature range (0°C to +70°C). At extended temperatures (−40°C to +85°C), the tolerance widens to ±3%. This specification is confirmed in the Electrical Characteristics tables under "REFERENCE" for MAX981–MAX984, with measured min/max values of 1.147V to 1.217V at E-temp.
Does the MAX984CSE+ support dual-supply operation, and what are the limits?
Yes, the MAX984CSE+ supports dual-supply operation from ±1.25V to ±5.5V. The absolute maximum ratings specify V+ to V− up to 11V, and the device maintains full functionality-including reference output and comparator operation-within this range. When using dual supplies, V− connects to the negative rail and GND remains tied to the system ground for output sinking.
Can the MAX984CSE+ be used without connecting the REF pin?
No-the REF pin must be connected, as it supplies the internal reference voltage to all four comparators' hysteresis and threshold circuits. Leaving REF floating causes undefined comparator behavior and potential output instability. If unused, REF should be decoupled with a 100nF capacitor to GND-but never bypassed with large capacitors, as specified in the Noise Considerations section.
What is the purpose of the dedicated GND pin (Pin 15) on the MAX984CSE+?
The dedicated GND pin (Pin 15) provides a separate return path for the output-stage N-channel MOSFETs, isolating switching noise from the analog input and reference circuitry. This separation enables clean level translation between bipolar (e.g., ±5V) and single-ended (e.g., 3.3V) domains without cross-talk-confirmed in the Pin Description and Applications Information sections.
How does the MAX984CSE+ differ from the MAX983CSE+ in terms of hysteresis capability?
The MAX984CSE+ has no HYST pin and no internal hysteresis circuitry, requiring external positive-feedback networks for hysteresis implementation. In contrast, the MAX983CSE+ includes a dedicated HYST pin enabling simple two-resistor hysteresis programming. This difference is explicitly stated in the Ordering Information table and Functional Diagrams (Figure 1c vs. 1d).
MAX984CSE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- with Voltage Reference
- Number of Elements:
- 4
- 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):
- 8.5µA
- Current - Quiescent (Max):
- 80dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- -
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 16-SOIC
MAX984CSE+ FAQ
1.How can I place an order for MAX984CSE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX984CSE+ 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 MAX984CSE+ reliable?
The price and inventory of MAX984CSE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX984CSE+ is usually 5 days.
3.What payment methods are accepted for MAX984CSE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX984CSE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX984CSE+?
MAX984CSE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX984CSE+ 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 MAX984CSE+?
For technical support, including MAX984CSE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX984CSE+ requirements.
6.How does Aetrix verify that MAX984CSE+ is sourced from the original manufacturer or authorized distributors?
All MAX984CSE+ 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 MAX984CSE+ meets industry standards.
7.What is the process for return or replacement of MAX984CSE+?
All MAX984CSE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX984CSE+, 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 MAX984CSE+ part is unused and in its original packaging.
Return procedure for MAX984CSE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX984CSE+ 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.
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