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Analog Devices Inc./Maxim Integrated MAX40009AUT+T
- Part No.:
- MAX40009AUT+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SOT-23-6
- Datasheet:
-
MAX40009AUT+T.pdf
- Description:
- LOW POWER, FAST COMPARATOR
- Quantity:
- Payment:
- Shipping:
Inventory:4,312
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Product details
Overview
MAX40009AUT+T from Analog Devices is a single micro-power rail-to-rail input comparator with push-pull output, operating from 1.7V to 5.5V supply and consuming only 12μA typical supply current at +25°C. It delivers 220ns propagation delay, 0.5mV typical input offset voltage, and integrated 3mV hysteresis - enabling clean switching in battery-powered IR receivers and threshold detectors.
For engineers reviewing the MAX40009AUT+T datasheet, MAX40009AUT+T pinout, MAX40009AUT+T application, or MAX40009AUT+T equivalent, key selection considerations include its 6-pin SOT23 package, -40°C to +125°C automotive qualification, shutdown input (SHDN), and push-pull output compatibility with 1.7V–5.5V logic interfaces without external pull-up.
Technical Context
The MAX40009AUT+T implements a precision comparator core with rail-to-rail input stage extending 200mV beyond both supply rails, supporting accurate sensing across full VDD range. Its internal 3mV hysteresis band eliminates oscillation on slow-moving inputs, while the push-pull output drives up to 8mA sink/source with rail-to-rail swing - eliminating need for external pull-up resistors.
Shutdown functionality is implemented via active-low SHDN pin, reducing quiescent current to ≤1μA over temperature. The device's unique output stage design suppresses supply-current surges during switching, minimizing supply-line glitches critical in noise-sensitive analog front-ends and portable systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.7V to 5.5V - supports direct operation from 1.8V, 2.5V, 3V, and 5V system rails without level-shifting. |
| Supply Current (Typ) | 12μA at +25°C - enables multi-year battery life in always-on sensor monitoring applications. |
| Propagation Delay | 220ns at 100mV overdrive - provides fast response for real-time window detection and data recovery circuits. |
| Input Offset Voltage (Max) | ±5mV over -40°C to +125°C - ensures stable trip-point accuracy across automotive temperature extremes. |
| Input Hysteresis | 3mV - prevents chatter on noisy or slowly varying signals without requiring external feedback components. |
| Output Type | Push-pull - delivers active high/low drive without external pull-up, simplifying interface to MCU GPIOs and digital logic. |
| Operating Temperature | -40°C to +125°C - fully specified for under-hood automotive, industrial control, and harsh-environment embedded use. |
Pinout & Package
MAX40009AUT+T is housed in a standard 6-pin SOT23 package (package code U6+1), measuring 2.9mm × 1.6mm × 1.1mm, with JEDEC-compliant land pattern 90-0175 and thermal resistance θJA = 230°C/W on a four-layer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN− | Inverting input - accepts rail-to-rail common-mode signals from −0.2V to VDD + 0.2V. |
| 2 | GND | Signal and power return - must be connected to low-impedance system ground plane for noise immunity. |
| 3 | OUT | Push-pull output - actively drives high/low to VDD/GND; sinks or sources up to 8mA with rail-to-rail swing. |
| 4 | IN+ | Non-inverting input - matches IN− in rail-to-rail range and bias current (≤140nA max). |
| 5 | VDD | Positive supply - requires local 0.1μF ceramic bypass capacitor to GND for stable high-speed operation. |
| 6 | SHDN | Active-low shutdown control - pulls device into ≤1μA quiescent mode when driven low; high-impedance when floating. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Supports input voltages from −0.2V to VDD + 0.2V - enables direct sensing of signals near supply rails without attenuation. |
| Integrated 3mV hysteresis | Eliminates need for external positive feedback network - reduces BOM count and layout area in threshold-detection designs. |
| No phase reversal on overdrive | Guarantees correct output polarity even when inputs exceed common-mode range by ±6V - improves robustness in transient-prone systems. |
| RF immunity filters | On-chip filtering rejects high-frequency interference - maintains reliable operation in noisy RF environments like mobile handsets and IoT gateways. |
| Low-power shutdown | Reduces supply current to ≤1μA - allows dynamic power gating in duty-cycled sensor nodes without external enable circuitry. |
Applications
| IR Receivers | Threshold Detectors |
|---|---|
Use Scenario: Demodulating pulsed infrared signals in remote-control receivers or proximity sensors. IC Role / Device Role / Timing Role: Comparator acting as high-speed signal slicer, converting analog IR envelope into clean digital pulses. Use Value: 220ns propagation delay and 3mV hysteresis ensure jitter-free pulse edge timing and immunity to ambient light noise. | Use Scenario: Monitoring battery voltage or sensor output against fixed or adjustable thresholds in portable devices. IC Role / Device Role / Timing Role: Precision threshold detector with rail-to-rail input, enabling full utilization of low-voltage supply headroom. Use Value: 0.5mV typical offset and −40°C to +125°C specification guarantee consistent trip points across battery discharge and environmental conditions. |
| Window Comparators | Level Translators |
Use Scenario: Validating analog sensor outputs within upper/lower safety bounds in automotive or industrial controllers. IC Role / Device Role / Timing Role: One half of dual-comparator window circuit, providing fast, low-power high-side or low-side boundary detection. Use Value: Push-pull output drives logic directly; 12μA supply current minimizes impact on system-level power budget. | Use Scenario: Converting 3.3V logic signals to 1.8V domain in mixed-voltage SoC interfaces or memory subsystems. IC Role / Device Role / Timing Role: Level-shifting comparator with VDD referenced to source domain and output swing compatible with target domain. Use Value: Push-pull output eliminates external pull-up resistor, reducing component count and PCB area versus open-drain alternatives. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV3601DBVR | Higher 350ns propagation delay; 65μA supply current; no shutdown pin; 1.8V–5.5V supply. | Lacks shutdown and hysteresis; less suitable for ultra-low-power or noise-prone environments. | Select when cost sensitivity outweighs power/performance requirements and shutdown is not needed. |
| LMV7219M5X | 220ns delay but 100μA supply current; no hysteresis; 2.7V–5.5V supply; no shutdown. | Higher quiescent current limits battery life; requires external hysteresis for noise immunity. | Choose only if legacy design already uses LMV7219 footprint and supply >2.7V is guaranteed. |
Compared with TLV3601DBVR and LMV7219M5X, the MAX40009AUT+T uniquely combines sub-15μA supply current, integrated hysteresis, shutdown control, and rail-to-rail inputs in a 6-pin SOT23 - making it optimal for space-constrained, battery-operated automotive and industrial sensing nodes where power, noise immunity, and temperature range are critical.
Availability
MAX40009AUT+T is available at Aetrix Electronics and suitable for IR receivers, threshold detectors, window comparators, and level translators requiring stable component supply across automotive (-40°C to +125°C) and industrial temperature ranges.
Supply support for MAX40009AUT+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, serving industrial, automotive, communications, and healthcare markets.
The MAX40008/MAX40009 family was designed specifically for ultra-low-power, high-accuracy voltage comparison in space- and energy-constrained portable and automotive systems - emphasizing rail-to-rail operation, fast response, and robust noise immunity.
FAQ
What is the maximum allowable input voltage range for MAX40009AUT+T relative to GND?
The MAX40009AUT+T allows IN+ and IN− inputs from −0.3V to +6V relative to GND, and differential input voltage up to ±6V. This extended range enables safe operation with overvoltage transients and simplifies interfacing to signals outside the supply rails - critical in automotive and industrial sensor front-ends where ESD or load-dump events may occur.
Does MAX40009AUT+T require an external pull-up resistor on its output?
No, MAX40009AUT+T features a push-pull output stage that actively drives both high and low states, eliminating the need for an external pull-up resistor. This contrasts with the open-drain MAX40008 variant and reduces component count, PCB area, and potential timing uncertainty introduced by RC time constants - especially beneficial in high-density portable designs.
How does the internal hysteresis of MAX40009AUT+T improve system reliability?
The MAX40009AUT+T integrates 3mV of internal hysteresis, creating distinct upper and lower trip thresholds that prevent output oscillation when input signals hover near the decision point. This eliminates false triggering caused by noise or slow slew rates - ensuring deterministic behavior in IR receivers, battery monitors, and other threshold-based systems without requiring external feedback components.
Can MAX40009AUT+T operate from a 1.8V supply while maintaining full rail-to-rail input capability?
Yes, MAX40009AUT+T operates from 1.7V to 5.5V and guarantees rail-to-rail input common-mode range from 0V to VDD across the full temperature range. At 1.8V supply, inputs can swing from 0V to 1.8V - enabling precise low-voltage sensing in modern ultra-low-power MCUs and wearables without signal attenuation or level-shifting circuitry.
What is the shutdown current specification for MAX40009AUT+T over temperature?
MAX40009AUT+T draws ≤1μA supply current in shutdown mode across the full −40°C to +125°C operating range. This ultra-low leakage enables long-term power gating in battery-backed systems - for example, allowing a sensor node to remain in standby for years while retaining fast wake-up capability via the SHDN pin.
MAX40009AUT+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SOT-23-6
- 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 (±):
- 1.7V ~ 5.5V
- :
- 5mV @ 3.3V
- Voltage - Input Offset (Max):
- 0.14µA @ 3.3V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 17µA
- Current - Quiescent (Max):
- 70dB CMRR, 60dB PSRR
- CMRR, PSRR (Typ):
- 340ns (Typ)
- Propagation Delay (Max):
- 3mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SOT-6
MAX40009AUT+T FAQ
1.How can I place an order for MAX40009AUT+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX40009AUT+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 MAX40009AUT+T reliable?
The price and inventory of MAX40009AUT+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX40009AUT+T is usually 5 days.
3.What payment methods are accepted for MAX40009AUT+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX40009AUT+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX40009AUT+T?
MAX40009AUT+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX40009AUT+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 MAX40009AUT+T?
For technical support, including MAX40009AUT+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX40009AUT+T requirements.
6.How does Aetrix verify that MAX40009AUT+T is sourced from the original manufacturer or authorized distributors?
All MAX40009AUT+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 MAX40009AUT+T meets industry standards.
7.What is the process for return or replacement of MAX40009AUT+T?
All MAX40009AUT+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX40009AUT+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 MAX40009AUT+T part is unused and in its original packaging.
Return procedure for MAX40009AUT+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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