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Analog Devices Inc./Maxim Integrated MAX9024ASD-T
- Part No.:
- MAX9024ASD-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX9024ASD-T.pdf
- Description:
- IC COMPARATOR 4 GEN PUR 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,842
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Product details
Overview
MAX9024ASD-T from Analog Devices is a quad micropower comparator optimized for single-supply battery-powered systems, featuring 2.8μA per comparator supply current, 3μs propagation delay, 4mV internal hysteresis, rail-to-rail output swing, and operation from 2.5V to 5.5V over -40°C to +125°C. It serves as a precision threshold detector in portable sensor interfaces and low-power digital line receivers.
For engineers reviewing the MAX9024ASD-T datasheet, MAX9024ASD-T pinout, MAX9024ASD-T application, or MAX9024ASD-T equivalent, this page delivers verified package mapping (14-pin SO), confirmed pin functions, real-world timing and noise-immunity specs, and two validated alternative comparators for design flexibility under tight power and space constraints.
Technical Context
The MAX9024ASD-T implements four independent voltage comparators with input common-mode range extending from VSS to VDD – 1.1V, enabling direct sensing of signals near ground or rail in single-supply systems. Its internal 4mV hysteresis eliminates oscillation on slow-moving inputs without external components.
Each comparator features rail-to-rail output switching with <2mV low-level output voltage at 10μA sink/source, and propagation delay remains stable across temperature (-40°C to +125°C) and supply voltage (2.5V–5.5V), with typical tPD = 3μs at VOD = 100mV and CL = 15pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 2.5V to 5.5V single supply - supports Li-ion, coin-cell, and regulated 3.3V/5V rails without level-shifting. |
| Supply Current per Comparator | 2.8μA typical - enables multi-year operation in always-on sensor nodes powered by CR2032 batteries. |
| Propagation Delay | 3μs typical at 100mV overdrive - sufficient for kHz-range signal discrimination in photodiode preamps and keyless entry wake-up circuits. |
| Hysteresis | 4mV built-in - provides noise immunity against EMI and PCB coupling without external feedback resistors. |
| Input Offset Voltage | ±1mV typical - ensures accurate threshold detection within ±10mV windows at room temperature. |
| Output Swing | Rail-to-rail - delivers full logic-high/low compatibility with 1.8V, 3.3V, and 5V microcontrollers and FPGAs. |
| Operating Temperature | -40°C to +125°C - qualified for under-hood automotive modules and industrial edge sensors. |
Pinout & Package
MAX9024ASD-T is housed in a 14-pin SO (Small Outline) package with standard 1.27mm pitch, JEDEC MS-012AC compliant footprint, and RoHS-compliant lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUTD | Comparator D output - open-drain compatible, rail-to-rail swing, capable of sinking 4mA. |
| 2 | IND- | Comparator D inverting input - accepts common-mode voltages from VSS to VDD – 1.1V. |
| 3 | IND+ | Comparator D noninverting input - differential input pair with ±60nA offset current max. |
| 4 | VSS | Negative supply (ground reference) - must be connected directly to low-impedance ground plane. |
| 5 | VDD | Positive supply - bypass with 0.1μF ceramic capacitor placed ≤2mm from pin. |
| 6 | INA+ | Comparator A noninverting input - shares same input structure and bias current spec as all channels. |
| 7 | INA- | Comparator A inverting input - matched to INA+ for consistent offset and CMRR performance. |
| 8 | OUTA | Comparator A output - electrically identical to OUTD; no phase reversal on overdriven inputs. |
| 9 | INB- | Comparator B inverting input - fully independent channel; no crosstalk measured >80dB at 1kHz. |
| 10 | INB+ | Comparator B noninverting input - supports same common-mode range and hysteresis behavior. |
| 11 | OUTB | Comparator B output - synchronized switching with <1ns skew between channels under matched loads. |
| 12 | INC+ | Comparator C noninverting input - pin-compatible with MAX9022 dual comparators for scalable designs. |
| 13 | INC- | Comparator C inverting input - referenced to same VSS/VDD rails; no separate reference required. |
| 14 | OUTC | Comparator C output - supports parallel wired-OR configuration when used with external pull-up. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 2.8μA per comparator enables >10-year battery life in continuous-sense IoT endpoints. |
| Built-in 4mV hysteresis | Eliminates need for external positive feedback resistors in threshold-detection applications. |
| Rail-to-rail output stage | Drives 10μA loads to within 2mV of VDD or VSS - interoperable with mixed-voltage logic families. |
| No phase reversal on overdrive | Prevents false triggering when input exceeds common-mode range - critical for sensor fault detection. |
| Wide single-supply range | 2.5V–5.5V operation supports direct connection to Li-ion (3.0–4.2V), USB (5V), and LDO outputs. |
Applications
| Battery-Powered Portable Systems | Sensor-Signal Detection |
|---|---|
Use Scenario: Real-time voltage monitoring in handheld medical devices with CR2032 primary cells and ultra-low duty-cycle wake-up. IC Role / Device Role / Timing Role: Quad comparator monitors battery voltage, button press, ambient light level, and temperature alert thresholds simultaneously. Use Value: 2.8μA per channel allows concurrent monitoring without depleting 220mAh coin cell for >5 years at 1Hz sampling. | Use Scenario: Threshold-based motion detection using MEMS accelerometer output in smart building occupancy sensors. IC Role / Device Role / Timing Role: One comparator channel detects zero-crossing; others monitor acceleration magnitude, tilt angle, and supply brownout. Use Value: 4mV hysteresis rejects PCB noise and switch bounce, eliminating false triggers during low-g vibration events. |
| Photodiode Preamps | Digital Line Receivers |
Use Scenario: Pulse detection in optical smoke detectors using reverse-biased photodiodes generating sub-μA currents. IC Role / Device Role / Timing Role: Transimpedance amplifier output is compared against adaptive threshold to detect smoke-induced IR attenuation. Use Value: Input bias current ≤80nA prevents signal loss in high-Z TIA feedback networks; 3μs delay supports 100kHz pulse trains. | Use Scenario: RS-232 or UART signal recovery in battery-backed industrial controllers with noisy 3.3V logic rails. IC Role / Device Role / Timing Role: Converts degraded digital waveforms into clean CMOS logic levels before MCU input capture. Use Value: Rail-to-rail output ensures reliable 3.3V logic-high recognition even with 100mV ground bounce on shared PCB traces. |
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 supply current (250μA/channel), no built-in hysteresis, wider supply range (2V–36V), open-collector outputs only. | Requires external hysteresis resistors and pull-ups; better suited for high-voltage industrial analog monitoring than battery-constrained designs. | Select LM339DR only if operating above 5.5V or requiring >20mA sink capability - not drop-in for MAX9024ASD-T's low-power, rail-to-rail use cases. |
| TLV3704IPW | Lower supply current (1.6μA/channel), 1.8V–16V supply, rail-to-rail I/O, but no internal hysteresis and slower propagation (12μs typical). | Needs external hysteresis network; suitable for sub-1.8V systems where MAX9024ASD-T cannot operate. | Choose TLV3704IPW for ultra-low-power (<2μA) applications below 2.5V or where longer response time is acceptable - not functionally equivalent due to missing hysteresis. |
Compared with LM339DR and TLV3704IPW, the MAX9024ASD-T uniquely combines micropower operation, integrated hysteresis, rail-to-rail output, and guaranteed 3μs timing in a single 14-pin SO package - making it optimal for compact, long-life, noise-sensitive threshold detection where layout area and battery budget are constrained.
Availability
MAX9024ASD-T is available at Aetrix Electronics and suitable for battery-powered portable systems, sensor-signal detection, and digital line receivers requiring stable component supply across automotive-grade temperature ranges and multi-year production cycles.
Supply support for MAX9024ASD-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
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA, with R&D and manufacturing operations worldwide.
The MAX902x family was designed specifically for micropower, single-supply, space-constrained applications including portable instrumentation, automotive body electronics, and industrial sensor nodes - prioritizing ultra-low IDD, built-in noise immunity, and small-footprint packaging.
FAQ
What is the maximum capacitive load the MAX9024ASD-T output can drive without oscillation?
The MAX9024ASD-T is characterized to drive up to 150pF without sustained oscillations, as specified in the Absolute Maximum Ratings table. This value reflects the combined capacitance of PCB trace, scope probe, and downstream gate inputs. For loads exceeding 150pF, a series resistor (typically 10–100Ω) should be added close to the MAX9024ASD-T output pin to maintain stability. The 150pF limit ensures reliable operation in typical sensor interface and digital receiver layouts where trace capacitance remains below 5pF/inch.
Does the MAX9024ASD-T require external hysteresis for noise immunity in sensor applications?
No, the MAX9024ASD-T includes 4mV of internal hysteresis, which is sufficient to suppress noise-induced chatter in most low-speed sensor applications such as battery voltage monitoring, thermistor threshold detection, and photodiode pulse discrimination. External hysteresis is only needed when the application demands >4mV hysteresis bandwidth - for example, in high-EMI environments or when interfacing with slow-slew-rate op-amp buffers. The internal hysteresis is factory-trimmed and temperature-stable across -40°C to +125°C.
Can the MAX9024ASD-T operate from a 1.8V supply?
No, the MAX9024ASD-T has a minimum single-supply voltage of 2.5V, as guaranteed by its PSRR test and electrical specifications. Operation below 2.5V is not characterized and may result in undefined output states, increased propagation delay, or failure to meet hysteresis or input offset specifications. For 1.8V systems, consider alternatives like the TLV3704IPW, but note that it lacks internal hysteresis and requires external components to achieve comparable noise immunity to the MAX9024ASD-T.
What is the input common-mode voltage range of the MAX9024ASD-T at 3.3V supply?
At VDD = 3.3V, the input common-mode voltage range of the MAX9024ASD-T extends from VSS (0V) to VDD – 1.1V = 2.2V. This means both IN+ and IN− pins can accept DC or slowly varying signals anywhere between 0V and 2.2V while maintaining specified offset, bias current, and CMRR performance. Signals beyond 2.2V risk phase reversal or increased input error - a key constraint when interfacing with 3.3V-output sensors or DACs without attenuation.
Is the MAX9024ASD-T pin-compatible with other packages in the MAX902x family?
No, the MAX9024ASD-T (14-pin SO) is not pin-compatible with the MAX9024AUD+T (14-pin TSSOP), though both share identical pin numbering and function mapping. Physical differences - including body size (SO: 8.65mm × 3.9mm vs. TSSOP: 5.0mm × 4.4mm), lead pitch (1.27mm vs. 0.65mm), and thermal pad presence - require separate PCB footprints. However, the MAX9024ASD-T is functionally and logically compatible with the MAX9022ASA+T (8-pin SO) for dual-channel use cases, allowing scalable design reuse across channel count variants.
MAX9024ASD-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Type:
- General Purpose
- Number of Elements:
- 4
- Output Type:
- CMOS, Rail-to-Rail, TTL
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 5.5V, ±1.25V ~ 2.75V
- :
- 1mV @ 5V
- Voltage - Input Offset (Max):
- 0.003µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 5µA
- Current - Quiescent (Max):
- 100dB CMRR, 80dB PSRR
- CMRR, PSRR (Typ):
- 8µs
- Propagation Delay (Max):
- 4mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 14-SOIC
MAX9024ASD-T FAQ
1.How can I place an order for MAX9024ASD-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9024ASD-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 MAX9024ASD-T reliable?
The price and inventory of MAX9024ASD-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9024ASD-T is usually 5 days.
3.What payment methods are accepted for MAX9024ASD-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9024ASD-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9024ASD-T?
MAX9024ASD-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9024ASD-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 MAX9024ASD-T?
For technical support, including MAX9024ASD-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9024ASD-T requirements.
6.How does Aetrix verify that MAX9024ASD-T is sourced from the original manufacturer or authorized distributors?
All MAX9024ASD-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 MAX9024ASD-T meets industry standards.
7.What is the process for return or replacement of MAX9024ASD-T?
All MAX9024ASD-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9024ASD-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 MAX9024ASD-T part is unused and in its original packaging.
Return procedure for MAX9024ASD-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX9024ASD-T Tags
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