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Analog Devices Inc./Maxim Integrated MAX924ESE
- Part No.:
- MAX924ESE
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX924ESE.pdf
- Description:
- IC COMPARATR 4 W/VOLT REF 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,782
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Product details
Overview
The MAX924ESE from Maxim Integrated is a quad micropower comparator with integrated 1.182V ±1% bandgap reference, designed for ultra-low-power single- or dual-supply operation (2.5V to +11V or ±1.25V to ±5.5V). It delivers 4 independent TTL/CMOS-compatible outputs that source up to 40mA and sink >5mA, features rail-to-rail input range (V− to V+ − 1.3V), and supports battery-powered threshold detection in industrial sensor interfaces.
For engineers reviewing the MAX924ESE datasheet, MAX924ESE pinout, MAX924ESE application, or MAX924ESE equivalent, key selection criteria include its guaranteed 8.5μA max supply current over −40°C to +85°C, 16-pin narrow SO package, absence of internal hysteresis (requiring external feedback), and compatibility with low-voltage systems down to 2.5V while maintaining stable reference output.
Technical Context
The MAX924ESE integrates four independent comparators sharing a common precision 1.182V reference referenced to V−, not GND. Its output stage eliminates crowbar current during transitions, preventing supply-line glitches and parasitic feedback-critical for noise-sensitive analog monitoring circuits.
Unlike the MAX921/MAX923, the MAX924 lacks a dedicated HYST pin; hysteresis must be implemented externally via positive feedback resistors on each comparator input pair. Input common-mode range extends from V− to (V+ − 1.3V), enabling direct sensing of signals near ground or rail in single-supply configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +11V single supply or ±1.25V to ±5.5V dual supply - enables flexible use in 3V/5V systems and bipolar signal conditioning |
| Quiescent Supply Current | 8.5μA max at −40°C to +85°C - ensures multi-year battery life in always-on IoT sensors |
| Reference Voltage Accuracy | 1.182V ±1% over 0°C to +70°C - provides stable threshold generation without external precision references |
| Input Offset Voltage | ±10mV - defines minimum detectable voltage difference between IN+ and IN− |
| Propagation Delay | 12μs typical at 10mV overdrive - supports medium-speed window detection and oscillator timing |
| Output Drive Capability | Sources ≥40mA, sinks ≥5mA - directly drives LEDs, small relays, or logic inputs without buffer stages |
| Input Common-Mode Range | V− to (V+ − 1.3V) - allows full-rail input operation in single-supply 3V systems (e.g., 0V to 1.7V) |
Pinout & Package
MAX924ESE is housed in a 16-pin narrow SO (Small Outline) package, rated for −40°C to +85°C operation. Pin 14 is GND, pins 1–2/15–16 are comparator outputs, and pin 8 supplies the 1.182V reference referenced to V− (pin 9).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 15, 16 | OUTB, OUTA, OUTD, OUTC | Four independent open-collector–like outputs sinking/sourcing current; swing from V+ to GND - TTL/CMOS compatible with +5V supply |
| 3 | V+ | Positive supply rail - accepts 2.5V–11V or +5.5V in dual-supply mode |
| 4, 6, 10, 12 | INA−, INB−, INC−, IND− | Inverting inputs for comparators A–D - support rail-to-rail common-mode range |
| 5, 7, 11, 13 | INA+, INB+, INC+, IND+ | Noninverting inputs for comparators A–D - matched to inverting inputs for precise threshold comparison |
| 8 | REF | 1.182V reference output referenced to V− - used as stable threshold source for all four comparators |
| 9 | V− | Negative supply - connect to GND for single-supply operation; enables dual-supply biasing |
| 14 | GND | Ground reference for output stage - separate from V− to isolate output switching noise from reference |
Key Features
| Feature | Design Value |
|---|---|
| No crowbar current during output transitions | Eliminates supply-line coupling and board-level instability - no bypass capacitors required on V+ for basic layouts |
| 40mA continuous output source capability | Drives LEDs, optocouplers, or logic gates directly - reduces BOM count and PCB area vs. buffered solutions |
| Internal 1.182V ±1% reference | Removes need for external voltage reference IC - cuts cost and improves long-term threshold stability |
| Rail-to-rail input common-mode range | Supports 0V–1.7V input in 3V systems - enables direct battery voltage monitoring without level-shifting |
| Low 8.5μA quiescent current at extended temperature | Enables decade-scale operation on coin-cell batteries - validated across −40°C to +85°C industrial range |
Applications
| Overvoltage/Undervoltage Monitoring | Battery Fuel Gauging |
|---|---|
Use Scenario: Detecting when a 5V system rail exceeds 5.5V or drops below 4.5V to trigger shutdown or alert. IC Role / Device Role / Timing Role: Quad comparator configured as window detector using resistor dividers and shared REF pin. Use Value: Single MAX924ESE replaces two dual comparators - reduces footprint by 33% and eliminates inter-device offset mismatch. | Use Scenario: Measuring lithium-ion cell voltage at four discrete thresholds (3.0V, 3.3V, 3.6V, 3.9V) to drive segmented LED fuel gauge. IC Role / Device Role / Timing Role: Four independent comparators each comparing cell voltage against a REF-derived threshold. Use Value: 40mA output drive powers LEDs directly - no current-limiting resistors needed for standard 20mA LEDs. |
| Industrial Sensor Threshold Detection | Low-Power Oscillator Circuits |
Use Scenario: Converting analog output from a 4–20mA pressure transducer into digital alarm signals at 10%, 50%, 90%, and fault thresholds. IC Role / Device Role / Timing Role: Comparator A–D compare scaled transducer voltage against REF-based reference voltages. Use Value: 8.5μA supply current enables integration into loop-powered 4–20mA devices without violating power budget. | Use Scenario: Building relaxation oscillator for watchdog timer or clock source in energy-harvesting nodes. IC Role / Device Role / Timing Role: One comparator configured with RC feedback and REF as threshold; others unused or repurposed. Use Value: Propagation delay <14μs and rail-to-rail input allow stable oscillation down to 1kHz with <1% frequency drift over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM339DR | No internal reference; higher 1.5mA supply current; open-collector outputs only | Requires external reference and pull-up resistors; unsuitable for battery life-critical designs | Select when cost is primary constraint and reference-free operation is acceptable |
| TLV3704IPW | Lower 800nA supply current but no internal reference; rail-to-rail I/O; 16-pin TSSOP | Needs external reference; better for sub-μA sleep modes but adds component count | Select for ultra-low-quiescent systems where reference can be shared across multiple ICs |
Compared with LM339DR and TLV3704IPW, the MAX924ESE uniquely integrates a precision reference and delivers 40mA output drive within an 8.5μA quiescent envelope - making it optimal for self-contained, low-component-count threshold detection in industrial and portable equipment.
Availability
MAX924ESE is available at Aetrix Electronics and suitable for battery-powered systems, industrial sensor interfaces, and low-power threshold detectors requiring stable component supply across extended temperature ranges.
Supply support for MAX924ESE 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 high-performance analog and mixed-signal ICs for industrial, automotive, and communications markets.
The MAX921–MAX924 family was engineered specifically for micropower comparator applications demanding integrated precision references, rail-to-rail inputs, and robust output drive - targeting portable instrumentation and energy-constrained monitoring systems.
FAQ
What is the maximum supply voltage for MAX924ESE in single-supply operation?
The MAX924ESE supports a single-supply voltage range of +2.5V to +11V. Operation above +11V violates absolute maximum ratings and may cause permanent damage. At +11V, the device maintains full functionality including 1.182V reference accuracy and 40mA output sourcing capability - verified across the −40°C to +85°C temperature range specified for the MAX924ESE grade.
Does MAX924ESE include internal hysteresis like MAX921 or MAX923?
No, the MAX924ESE does not include internal hysteresis or a HYST pin. Hysteresis must be implemented externally using positive feedback resistors on each comparator input pair, as detailed in Figure 4 of the MAX924 datasheet. This differs from the MAX921 and MAX923, which provide programmable hysteresis via the HYST pin - a key functional distinction confirmed in the Ordering Information table and Pin Descriptions section for MAX924ESE.
Can MAX924ESE operate from a 3V single supply while maintaining reference accuracy?
Yes, the MAX924ESE operates from +2.5V to +11V, including 3V nominal supplies. The 1.182V reference remains accurate (±1%) over 0°C to +70°C at 3V, and the comparators function with full input common-mode range (0V to 1.7V). Electrical Characteristics tables explicitly list performance data at V+ = 3V, confirming stable operation - critical for modern low-voltage microcontroller interfaces.
What is the purpose of the separate GND and V− pins on MAX924ESE?
The MAX924ESE uses pin 14 (GND) as the output stage ground reference and pin 9 (V−) as the negative supply for the comparator core and reference circuitry. This separation isolates switching noise from the precision reference path - improving noise immunity and stability. When operating from a single supply, V− is connected to system ground, while GND remains tied to the same node; in dual-supply mode, V− connects to the negative rail and GND to circuit ground.
Is MAX924ESE pin-compatible with other MAX92x variants in the same package?
No, the MAX924ESE is not pin-compatible with MAX921/922/923 despite sharing the 16-pin narrow SO footprint. Its pinout is unique: pins 1–2/15–16 are outputs, pin 8 is REF, and pin 9 is V− - whereas MAX921–923 use 8-pin packages with different signal assignments. Attempting drop-in replacement will result in incorrect connections and functional failure, as confirmed by the Pin Configurations diagram on page 14 of the datasheet.
MAX924ESE 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:
- 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:
- -40°C ~ 85°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 16-SOIC
MAX924ESE FAQ
1.How can I place an order for MAX924ESE through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX924ESE 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 MAX924ESE reliable?
The price and inventory of MAX924ESE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX924ESE is usually 5 days.
3.What payment methods are accepted for MAX924ESE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX924ESE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX924ESE?
MAX924ESE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX924ESE 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 MAX924ESE?
For technical support, including MAX924ESE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX924ESE requirements.
6.How does Aetrix verify that MAX924ESE is sourced from the original manufacturer or authorized distributors?
All MAX924ESE 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 MAX924ESE meets industry standards.
7.What is the process for return or replacement of MAX924ESE?
All MAX924ESE units undergo pre-shipment inspection (PSI). If there is an issue with MAX924ESE, 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 MAX924ESE part is unused and in its original packaging.
Return procedure for MAX924ESE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX924ESE Tags
-
LM2903DR
Texas Instruments
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LM339DR
Texas Instruments
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LM339PWR
Texas Instruments
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LM393DT
STMicroelectronics
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LM2901PWR
Texas Instruments
-
LM2903DT
STMicroelectronics
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LM393DR
Texas Instruments
-
LM239DR
Texas Instruments
-
LM339APWR
Texas Instruments
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LM2903P
Texas Instruments
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LM393ADR
Texas Instruments
-
NCX2200GMAZ
NXP USA Inc.
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