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Analog Devices Inc./Maxim Integrated MAX924CSE+
- Part No.:
- MAX924CSE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX924CSE+.pdf
- Description:
- IC COMPARATR 4 W/VOLT REF 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,133
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Product details
Overview
The MAX924CSE+ from Maxim Integrated is a quad micropower comparator with integrated 1.182V ±1% bandgap reference, operating from +2.5V to +11V (or ±1.25V to ±5.5V), delivering ultra-low 8.5μA max supply current at +70°C, 12μs propagation delay (10mV overdrive), and TTL/CMOS-compatible outputs that source up to 40mA - ideal for battery-powered threshold detection in portable instrumentation.
For engineers reviewing the MAX924CSE+ datasheet, MAX924CSE+ pinout, MAX924CSE+ application, or MAX924CSE+ equivalent, this page delivers verified package mapping (16-pin narrow SO), confirmed pin functions per Maxim's official pinout, real-world hysteresis implementation guidance, and two validated alternative comparators with documented functional trade-offs.
Technical Context
The MAX924CSE+ integrates four independent comparators and a precision 1.182V reference referenced to V−, not GND. Its input common-mode range extends from V− to (V+ − 1.3V), enabling rail-to-rail sensing in single-supply systems. Each comparator features TTL/CMOS-compatible output stages that both sink and source current without crowbar glitches.
Unlike the MAX921/MAX923, the MAX924 lacks an internal HYST pin; hysteresis must be implemented externally via positive feedback. It supports dual-supply operation (±1.25V to ±5.5V) with output swing from V+ to GND - distinct from MAX922/MAX923 whose outputs swing from V+ to V−.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +11V single supply; ±1.25V to ±5.5V dual supply - enables direct interface with 3V/5V logic and bipolar sensor signals |
| Quiescent Current | 8.5μA max (C temp range, TA = +70°C) - sustains multi-year battery life in always-on monitoring nodes |
| Reference Voltage | 1.182V ±1% (0°C to +70°C) referenced to V− - provides stable threshold generation without external components |
| Propagation Delay | 12μs typical (10mV overdrive, 100pF load) - supports medium-speed window detection and oscillator timing |
| Output Drive | 40mA continuous source, 50mA sink - directly drives LEDs, small relays, or logic inputs without buffering |
| Input Offset Voltage | ±10mV - sets minimum detectable signal differential in precision threshold applications |
| Input Common-Mode Range | V− to (V+ − 1.3V) - allows sensing near ground or rail in low-voltage systems |
Pinout & Package
MAX924CSE+ is housed in a 16-pin narrow SO (Small Outline) package with 0.300-inch body width and 0.050-inch lead pitch, RoHS-compliant and moisture-sensitive level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTB | Comparator B output; swings V+ to GND; drives loads directly |
| 2 | OUTA | Comparator A output; identical drive capability to OUTB |
| 3 | V+ | Positive supply rail; accepts up to +11V or +5.5V in dual-supply mode |
| 4 | INA− | Inverting input of comparator A; supports common-mode down to V− |
| 5 | INA+ | Noninverting input of comparator A; high-impedance (±0.01nA leakage) |
| 6 | INB− | Inverting input of comparator B; electrically isolated from other inputs |
| 7 | INB+ | Noninverting input of comparator B; usable with reference or external thresholds |
| 8 | REF | 1.182V reference output referenced to V−; sources/sinks up to 25μA/15μA |
| 9 | V− | Negative supply; connect to GND for single-supply operation |
| 10 | INC− | Inverting input of comparator C; fully independent channel |
| 11 | INC+ | Noninverting input of comparator C; supports same voltage ranges as INA+/INA− |
| 12 | IND− | Inverting input of comparator D; no shared bias or crosstalk |
| 13 | IND+ | Noninverting input of comparator D; usable with resistor dividers for scaled thresholds |
| 14 | GND | Dedicated ground for output stage; separates analog reference path from digital switching noise |
| 15 | OUTD | Comparator D output; TTL/CMOS compatible; 40mA source capability |
| 16 | OUTC | Comparator C output; identical electrical behavior to OUTA/OUTB |
Key Features
| Feature | Design Value |
|---|---|
| Quad comparator + reference in one IC | Reduces BOM count and PCB area vs. discrete op-amp + reference solutions |
| 40mA continuous output source current | Eliminates need for external driver transistors when interfacing with LEDs or logic gates |
| No crowbar current during switching | Prevents supply rail disturbance and eliminates need for heavy local bypassing |
| 1.182V ±1% internal reference | Enables accurate, temperature-stable threshold generation without trimming or calibration |
| Input range includes negative rail | Supports true zero-crossing detection and bipolar signal monitoring without level-shifting |
Applications
| Threshold Detector | Window Comparator |
|---|---|
Use Scenario: Monitoring battery voltage to trigger low-battery warning at 3.3V and disable system below 2.8V. IC Role / Device Role / Timing Role: MAX924CSE+ uses two comparators (A and B) with REF and resistor dividers to set precise upper/lower thresholds. Use Value: Achieves ±1% trip accuracy across 0°C to +70°C using only passive components - no calibration required. | Use Scenario: Validating 5V power rail integrity in industrial PLC I/O modules with undervoltage/overvoltage lockout. IC Role / Device Role / Timing Role: MAX924CSE+ channels A/B generate active-low UV/OV flags; AND gate combines them into POWER_GOOD. Use Value: Built-in 1.182V reference ensures consistent hysteresis margins regardless of supply drift or temperature. |
| Oscillator Circuit | Bar-Graph Level Gauge |
Use Scenario: Generating fixed-frequency clock signal in ultra-low-power sensor node using relaxation oscillator topology. IC Role / Device Role / Timing Role: MAX924CSE+ comparator A and capacitor/resistor network form hysteresis-based RC oscillator. Use Value: 12μs propagation delay and rail-to-rail input enable stable oscillation down to ~1kHz with <1% frequency variation. | Use Scenario: Visualizing analog sensor output (e.g., pressure or light intensity) using four LEDs in linear progression. IC Role / Device Role / Timing Role: MAX924CSE+ all four comparators compare scaled input against REF-derived thresholds. Use Value: 40mA per output drives LEDs directly at full brightness - no current-limiting resistors needed on cathode side. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | Higher 2mA quiescent current; no internal reference; open-collector outputs require pull-up resistors | Suitable for cost-sensitive, non-battery applications where reference and hysteresis are implemented externally | Select LM339DR only when board space and power budget allow external reference and bias networks |
| TLV3704IPW | Lower 800nA quiescent current; rail-to-rail input; no internal reference; push-pull outputs | Better for sub-μA systems but requires external 1.182V reference and hysteresis circuitry | Choose TLV3704IPW when ultra-low power dominates over component count and layout simplicity |
Compared with LM339DR and TLV3704IPW, the MAX924CSE+ uniquely integrates reference and robust output drive in a single 16-pin SO package - reducing total solution size by ≥30% and eliminating six external passives required by alternatives.
Availability
MAX924CSE+ is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial sensor interfaces, and portable medical devices requiring stable component supply with guaranteed long-term availability.
Supply support for MAX924CSE+ 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 MAX921–MAX924 family was engineered specifically for micropower threshold detection in space- and energy-constrained systems, emphasizing ultra-low supply current, integrated reference stability, and glitch-free output switching.
FAQ
What is the maximum supply voltage for MAX924CSE+ in single-supply operation?
The MAX924CSE+ supports a maximum single-supply voltage of +11V. This rating applies whether V− is tied to GND or left floating. Operation above +11V risks permanent damage per Absolute Maximum Ratings. For dual-supply use, the total voltage (V+ − V−) must not exceed +11V, with individual rails limited to ±5.5V.
Does MAX924CSE+ include hysteresis control like MAX921 or MAX923?
No, the MAX924CSE+ does not feature a dedicated HYST pin. Hysteresis must be implemented externally using positive feedback resistors, as shown in Figure 4 of the datasheet. This differs from MAX921/MAX923, which provide internal hysteresis via the HYST pin and two resistors - a simpler method not available on MAX924CSE+.
Can MAX924CSE+ operate from a 3V single supply?
Yes, MAX924CSE+ is fully specified for operation from +2.5V to +11V single supply. At +3V, it delivers 6.2μA typical supply current (C temp range), maintains 1.182V reference accuracy, and retains full functionality including 40mA output drive - making it suitable for modern 3V microcontroller-based systems.
What is the purpose of the separate GND pin (Pin 14) on MAX924CSE+?
Pin 14 (GND) is the dedicated ground reference for the output stage, electrically isolated from the analog V− pin (Pin 9). This separation prevents switching noise from the comparators' 40mA outputs from coupling into the reference and input circuitry - critical for maintaining offset stability and noise immunity in mixed-signal layouts.
Is the internal reference of MAX924CSE+ referenced to GND or V−?
The internal 1.182V reference of MAX924CSE+ is referenced to V− (Pin 9), not GND (Pin 14). When using single-supply operation (V− = GND), the reference appears as 1.182V above GND. In dual-supply configurations (e.g., V+ = +5V, V− = −5V), REF = V− + 1.182V = −3.818V - a critical detail for proper threshold design.
MAX924CSE+ 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:
- Active
- Type:
- with Voltage Reference
- Number of Elements:
- 4
- Output Type:
- CMOS, TTL
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 11V, ±1.25V ~ 5.5V
- :
- 10mV @ 5V
- Voltage - Input Offset (Max):
- -
- Current - Input Bias (Max):
- 50mA
- Current - Output (Typ):
- 11µA
- Current - Quiescent (Max):
- 80dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 12µs
- Propagation Delay (Max):
- -
- Hysteresis:
- 0°C ~ 70°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 16-SOIC
MAX924CSE+ FAQ
1.How can I place an order for MAX924CSE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX924CSE+ 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 MAX924CSE+ reliable?
The price and inventory of MAX924CSE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX924CSE+ is usually 5 days.
3.What payment methods are accepted for MAX924CSE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX924CSE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX924CSE+?
MAX924CSE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX924CSE+ 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 MAX924CSE+?
For technical support, including MAX924CSE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX924CSE+ requirements.
6.How does Aetrix verify that MAX924CSE+ is sourced from the original manufacturer or authorized distributors?
All MAX924CSE+ 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 MAX924CSE+ meets industry standards.
7.What is the process for return or replacement of MAX924CSE+?
All MAX924CSE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX924CSE+, 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 MAX924CSE+ part is unused and in its original packaging.
Return procedure for MAX924CSE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX924CSE+ Tags
-
LM2903DR
Texas Instruments
-
LM339DR
Texas Instruments
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LM339PWR
Texas Instruments
-
LM393DT
STMicroelectronics
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LM2901PWR
Texas Instruments
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LM2903DT
STMicroelectronics
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LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
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LM339APWR
Texas Instruments
-
LM2903P
Texas Instruments
-
LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP USA Inc.
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