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Analog Devices Inc./Maxim Integrated MAX9031AXK+T
- Part No.:
- MAX9031AXK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX9031AXK+T.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,100
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Product details
Overview
MAX9031AXK+T from Maxim Integrated is a single, rail-to-rail output comparator optimized for low-power, single-supply operation from +2.5V to +5.5V, featuring 188ns propagation delay, 35μA supply current per comparator, 4mV internal hysteresis, and operation across -40°C to +125°C - deployed in battery-powered portable systems and sensor signal detection circuits.
For engineers reviewing the MAX9031AXK+T datasheet, MAX9031AXK+T pinout, MAX9031AXK+T application, or MAX9031AXK+T equivalent, key selection criteria include ultra-low quiescent current, SC70-5 package footprint, input common-mode range extending to VDD − 1.1V, absence of phase reversal under overdrive, and guaranteed hysteresis for noise-immune threshold detection.
Technical Context
The MAX9031AXK+T implements a CMOS input stage with rail-to-rail output swing, enabling full dynamic range utilization in single-supply systems. Its input common-mode voltage range spans from VSS to VDD − 1.1V, supporting direct interfacing with sensors and photodiode preamps without level-shifting.
Internal 4mV hysteresis eliminates oscillation on slow-moving inputs, while propagation delay remains stable at 188ns (VOD = 100mV) across temperature and supply voltage. Output switching current is minimized to suppress supply glitches during transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.5V to +5.5V single supply - enables direct use with Li-ion, 3.3V, and 5V rails without regulation. |
| Propagation Delay | 188ns at VOD = 100mV - supports reliable timing in high-speed digital line receivers and threshold discriminators. |
| Supply Current | 35μA per comparator - extends battery life in portable and keyless entry systems. |
| Input Hysteresis | 4mV built-in - ensures clean, chatter-free output transitions without external feedback components. |
| Input Common-Mode Range | VSS to VDD − 1.1V - allows direct connection to unbuffered sensor outputs near ground or rail. |
| Output Swing | Rail-to-rail - maximizes logic margin when driving CMOS inputs or ADC reference comparators. |
| Operating Temperature | -40°C to +125°C - qualified for automotive cabin and industrial embedded environments. |
Pinout & Package
MAX9031AXK+T is housed in a 5-pin SC70 package (package code X5+1), with 0.65mm pitch, 2.0mm × 1.25mm body size, and RoHS-compliant lead-free finish. Bypassing requires a 0.1µF capacitor between VDD and VSS.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VSS | Negative supply rail - must be connected to system ground; bypassed with 0.1µF capacitor. |
| 2 | OUT | CMOS-compatible rail-to-rail output - drives logic inputs directly; sinks/supplies up to 4mA. |
| 3 | IN− | Inverting input - accepts signals up to VDD − 1.1V; high impedance (>100MΩ) minimizes loading. |
| 4 | IN+ | Noninverting input - identical electrical characteristics to IN−; used for positive-edge threshold detection. |
| 5 | VDD | Positive supply rail - operates from +2.5V to +5.5V; PSRR > 72dB rejects supply noise. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal under overdrive | Prevents false triggering when inputs exceed common-mode range - critical for photodiode preamp front-ends. |
| Ultra-low 35μA supply current | Enables multi-year operation on coin-cell batteries in wireless sensor nodes and key fobs. |
| 188ns propagation delay with 15pF load | Supports >1MHz signal discrimination in digital line receivers and pulse-width detection. |
| 4mV factory-trimmed hysteresis | Eliminates need for external positive feedback resistors - reduces BOM count and PCB area. |
| Rail-to-rail output swing | Delivers full logic-high/low levels to downstream CMOS gates or microcontroller GPIOs without level shifters. |
Applications
| Battery-Powered Threshold Detection | Photodiode Signal Discrimination |
|---|---|
Use Scenario: Monitoring battery voltage against low-charge cutoff thresholds in portable medical devices. IC Role / Device Role / Timing Role: Single comparator comparing battery voltage to precision reference to assert low-battery flag. Use Value: 35μA quiescent current preserves standby runtime; 4mV hysteresis prevents chatter during gradual voltage decay. |
Use Scenario: Converting weak, noisy photodiode current into clean digital pulses in optical smoke detectors. IC Role / Device Role / Timing Role: Front-end comparator converting transimpedance amplifier output into TTL-compatible logic edges. Use Value: Input common-mode range down to VSS accepts near-ground photodiode bias; rail-to-rail output drives MCU interrupt pins directly. |
| Digital Line Receiver | Keyless Entry RF Signal Detection |
Use Scenario: Recovering NRZ data from attenuated, capacitively coupled communication lines in industrial I/O modules. IC Role / Device Role / Timing Role: High-speed comparator reconstructing logic levels from degraded analog waveforms. Use Value: 188ns delay ensures sub-microsecond response to edge transitions; no phase reversal tolerates overshoot on long traces. |
Use Scenario: Detecting valid amplitude-modulated RF envelope bursts from car key fob transmitters. IC Role / Device Role / Timing Role: Envelope detector comparator triggering wake-up logic upon valid signal presence. Use Value: -40°C to +125°C rating supports under-hood deployment; low supply current extends fob battery life beyond 5 years. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMV331IDBVR | Higher 80μA supply current; 210ns propagation delay; no built-in hysteresis. | Requires external hysteresis resistors; less suitable for ultra-low-power sensor nodes. | Preferred where cost sensitivity outweighs power budget constraints and board space permits resistor placement. |
| TLV3601DBVR | 2.5ns propagation delay; 85μA supply current; rail-to-rail input; no hysteresis. | Optimized for high-speed analog-to-digital conversion triggers, not low-power thresholding. | Select when nanosecond-level timing accuracy is required and power consumption is secondary. |
Compared with LMV331IDBVR and TLV3601DBVR, the MAX9031AXK+T uniquely balances ultra-low 35μA supply current, factory-integrated 4mV hysteresis, and 188ns speed - making it optimal for space-constrained, battery-operated threshold detection where reliability and component count matter.
Availability
MAX9031AXK+T is available at Aetrix Electronics and suitable for battery-powered portable systems, photodiode signal detection, and digital line receiver applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX9031AXK+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 industrial, automotive, and communications markets - emphasizing performance, integration, and reliability.
The MAX903x family targets ultra-low-power, space-constrained comparator applications including portable instrumentation, sensor interfaces, and energy-harvesting systems - prioritizing micropower operation without sacrificing speed or noise immunity.
FAQ
What is the operating temperature range for MAX9031AXK+T?
The MAX9031AXK+T is specified for continuous operation from -40°C to +125°C. This extended range is validated across all electrical parameters in the datasheet and supports deployment in automotive cabin modules, industrial controllers, and outdoor portable equipment where ambient temperatures fluctuate widely. The MAX9031AXK+T maintains its 35μA supply current and 188ns propagation delay across this full range.
Does MAX9031AXK+T include internal hysteresis, and how does it affect design?
Yes, the MAX9031AXK+T integrates 4mV of factory-trimmed hysteresis to prevent output oscillation with slow-moving or noisy inputs. This eliminates the need for external positive-feedback resistors in most threshold-detection applications, reducing component count and PCB area. The hysteresis band is fixed and centered around the input offset voltage, ensuring predictable trip-point separation without layout-dependent tuning. For the MAX9031AXK+T, this feature directly enables robust photodiode signal discrimination and battery-voltage monitoring without additional circuitry.
What package type and footprint does MAX9031AXK+T use?
The MAX9031AXK+T is supplied in a 5-pin SC70 package (outline 21-0076, land pattern 90-0188), measuring 2.0mm × 1.25mm with 0.65mm pin pitch. It is RoHS-compliant and marked with a "+" suffix indicating lead-free finish. This ultra-small footprint is ideal for space-constrained designs such as wearable health monitors and compact IoT sensor nodes. The MAX9031AXK+T requires standard SC70 reflow profiles and 0.1µF VDD–VSS bypassing per the manufacturer's layout guidelines.
Can MAX9031AXK+T operate from a 2.5V supply, and what performance is guaranteed?
Yes, the MAX9031AXK+T is fully specified for operation from +2.5V to +5.5V single supply. At VDD = +2.5V, it guarantees 35μA typical supply current, 188ns propagation delay (with 100mV overdrive), rail-to-rail output swing, and input common-mode range from VSS to VDD − 1.1V (i.e., up to +1.4V). All key parameters - including hysteresis, offset voltage, and PSRR - remain within datasheet limits at minimum supply, enabling direct interface with low-voltage microcontrollers and energy-harvesting power sources in the MAX9031AXK+T design.
Is MAX9031AXK+T pin-compatible with other comparators in the MAX903x family?
No, the MAX9031AXK+T is not pin-compatible with other members of the MAX903x family. It uses a 5-pin SC70 configuration (VSS, OUT, IN−, IN+, VDD), whereas the MAX9030 includes a sixth SHDN pin, and the dual/quad variants use 8-pin and 14-pin packages with different pinouts. Substituting the MAX9031AXK+T for MAX9030AXT+T or MAX9032AKA+T would require PCB layout changes. Always verify pin mapping using the official MAX9031AXK+T pin description before board design or replacement.
MAX9031AXK+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Push-Pull, Rail-to-Rail
- Voltage - Supply, Single/Dual (±):
- 2.5V ~ 5.5V
- :
- 1mV @ 5V
- Voltage - Input Offset (Max):
- 0.008µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 55µA
- Current - Quiescent (Max):
- 100dB CMRR, 100dB PSRR
- CMRR, PSRR (Typ):
- 228ns
- Propagation Delay (Max):
- 4mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SC-70-5
MAX9031AXK+T FAQ
1.How can I place an order for MAX9031AXK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9031AXK+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 MAX9031AXK+T reliable?
The price and inventory of MAX9031AXK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9031AXK+T is usually 5 days.
3.What payment methods are accepted for MAX9031AXK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9031AXK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9031AXK+T?
MAX9031AXK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9031AXK+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 MAX9031AXK+T?
For technical support, including MAX9031AXK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9031AXK+T requirements.
6.How does Aetrix verify that MAX9031AXK+T is sourced from the original manufacturer or authorized distributors?
All MAX9031AXK+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 MAX9031AXK+T meets industry standards.
7.What is the process for return or replacement of MAX9031AXK+T?
All MAX9031AXK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9031AXK+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 MAX9031AXK+T part is unused and in its original packaging.
Return procedure for MAX9031AXK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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