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Analog Devices Inc./Maxim Integrated MAX9647AXK+T
- Part No.:
- MAX9647AXK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MAX9647AXK+T.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,509
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Product details
Overview
MAX9647AXK+T from Maxim Integrated is a single, general-purpose, low-voltage comparator in a 5-pin SC70 package, operating from +1.8V to +5.5V supply, featuring 60µA supply current at 5V, 120mV output saturation voltage at 4mA sink, and -40°C to +125°C automotive temperature range - used for precision threshold detection in battery-powered portable electronics.
For engineers reviewing the MAX9647AXK+T datasheet, MAX9647AXK+T pinout, MAX9647AXK+T application, or MAX9647AXK+T equivalent, this page delivers verified electrical specs, validated pin functions, real-world use cases in low-voltage systems, and two confirmed alternative comparators with documented functional and application-level differences.
Technical Context
The MAX9647AXK+T implements a rail-to-rail input stage with common-mode range extending 0.1V below VSS and up to VDD – 0.7V, enabling ground-sensing capability. Its open-drain output supports flexible pull-up configurations and interfaces directly with 1.8V/3.3V/5V logic families.
It delivers 70ns propagation delay (tPHL) at 10mV overdrive and maintains stable operation without phase reversal when inputs are overdriven - critical for robust sensing in noisy, low-slew-rate signal environments such as battery monitoring and power sequencing circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V - enables direct integration into Li-ion, coin-cell, and multi-rail embedded systems without level-shifting. |
| Supply Current | 60µA per channel at VDD = +5.0V - supports ultra-low-power operation in always-on sensor nodes and wake-up circuits. |
| Input Offset Voltage | 0.4mV (typ), 9mV (max) over -40°C to +125°C - ensures accurate trip-point stability across automotive and industrial temperature extremes. |
| Output Saturation Voltage | 120mV at ISINK = 4mA - minimizes voltage drop in high-side sensing and improves noise margin for downstream logic interfaces. |
| Propagation Delay | 70ns (tPHL), 115ns (tPLH) at 10mV overdrive - provides fast response for timing-critical window detection and overvoltage latch applications. |
| Input Common-Mode Range | -0.1V to VDD – 0.7V - allows direct connection to ground-referenced signals and simplifies biasing in single-supply designs. |
| PSRR | 60dB to 90dB - suppresses supply ripple-induced false triggering in noisy DC-DC converter feedback paths. |
Pinout & Package
MAX9647AXK+T is housed in a 5-pin SC70 package (2.0mm × 2.1mm × 1.0mm), optimized for space-constrained portable and automotive PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN+ | Noninverting Input | Accepts reference or sensed signal; supports rail-to-rail common-mode range down to -0.1V relative to VSS. |
| 2 - VSS | Negative Supply | Must be connected to system ground; serves as return path for input bias current and output sink current. |
| 3 - IN- | Inverting Input | Receives comparison signal; no phase reversal occurs even when overdriven beyond common-mode limits. |
| 4 - OUT | Open-Drain Output | Requires external pull-up; sinks up to 35mA; compatible with mixed-voltage I/O domains via pull-up selection. |
| 5 - VDD | Positive Supply | Supplies internal circuitry; accepts 1.8V–5.5V; bypass capacitor (0.1µF) required adjacent to this pin. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal on overdrive | Prevents erroneous output toggling during input transients or ESD events - eliminates need for external clamping diodes. |
| Low 60µA supply current | Extends battery life in coin-cell-powered devices like wearables and remote sensors by minimizing quiescent drain. |
| 120mV output saturation voltage | Enables reliable low-VOL signaling to 1.8V logic while maintaining >1.6V noise margin at 3.3V pull-up. |
| Guaranteed operation to +125°C | Validated for under-hood automotive modules and industrial motor controllers without derating or thermal management. |
| RF immunity and low input bias current | IB ≤ ±400nA over full temperature range reduces error in high-impedance sensor interfaces (e.g., thermistor networks). |
Applications
| Battery Voltage Monitor | Power Sequencing Controller |
|---|---|
|
Use Scenario: Detecting undervoltage lockout (UVLO) and overvoltage conditions in single-cell Li-ion battery packs. IC Role / Device Role / Timing Role: Comparator configured as dual-threshold detector with external resistive divider; triggers shutdown or alert signal. Use Value: 0.4mV typical offset and 1.5µV/°C drift ensure <±10mV total error over -40°C to +125°C - critical for safe battery cutoff accuracy. |
Use Scenario: Enforcing strict power-up/down order across multiple rails (e.g., core, I/O, analog) in FPGA or SoC systems. IC Role / Device Role / Timing Role: Monitoring each supply rail with independent thresholds; outputs drive enable pins or reset latches. Use Value: 70ns tPHL enables sub-100ns response to rail collapse, preventing latch-up or configuration corruption during brownout events. |
| Portable Device Wake-Up Sensor | Industrial Threshold Alarm |
|
Use Scenario: Detecting motion-triggered button press or ambient light change to wake a sleeping microcontroller. IC Role / Device Role / Timing Role: Low-power comparator comparing sensor output against reference; open-drain output pulls MCU interrupt line low. Use Value: 60µA supply current and 1.8V minimum operation allow continuous monitoring from 3V coin cell for >1 year without replacement. |
Use Scenario: Monitoring temperature, pressure, or current in factory automation equipment with alarm thresholds. IC Role / Device Role / Timing Role: Comparing conditioned analog signal to fixed reference; output drives LED, buzzer, or PLC input. Use Value: -40°C to +125°C guaranteed operation and 60dB PSRR prevent false alarms caused by thermal drift or switching power supply noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMX331HMM/NOPB | Pin-compatible but higher 100µA supply current; no guaranteed 1.8V operation; 1.5mV max offset at +25°C only. | Limited to commercial temperature range (-40°C to +85°C); not qualified for automotive or extended industrial use. | Select when cost is primary and full -40°C to +125°C operation is unnecessary. |
| TLV3701DBVR | Same SC70-5 package; 1.8V–5.5V supply; but 100nA input bias current (vs. ±400nA max for MAX9647AXK+T) and no guaranteed hysteresis-free performance. | Lower input bias benefits high-Z sensor interfaces, but lacks MAX9647AXK+T's no-phase-reversal guarantee under overdrive. | Select for ultra-low IB applications where overdrive immunity is not required. |
Compared with LMX331HMM/NOPB and TLV3701DBVR, MAX9647AXK+T uniquely combines guaranteed -40°C to +125°C operation, no phase reversal, and 60µA supply current in SC70 - making it optimal for automotive-grade, battery-sensitive, and noise-prone sensing tasks where reliability trumps marginal cost savings.
Availability
MAX9647AXK+T is available at Aetrix Electronics and suitable for battery-powered electronics, portable medical devices, and automotive body control modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX9647AXK+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 is a semiconductor design and manufacturing company specializing in analog and mixed-signal ICs for power management, sensing, and interface applications.
The MAX9647/MAX9648 family was designed specifically for low-voltage, space-constrained, and thermally demanding applications - delivering precision comparison with minimal footprint and power budget impact.
FAQ
What is the maximum operating temperature for MAX9647AXK+T?
The MAX9647AXK+T is fully specified and guaranteed to operate from -40°C to +125°C. This extended temperature range is validated across all key parameters including input offset voltage, propagation delay, and supply current - making MAX9647AXK+T suitable for under-hood automotive and industrial control applications where thermal stress is significant.
Does MAX9647AXK+T have internal hysteresis?
No, MAX9647AXK+T does not include internal hysteresis. Internal 2mV hysteresis is exclusive to the MAX9648 variant. The MAX9647AXK+T relies on external positive feedback if noise immunity is required - a design choice that preserves flexibility for precision zero-crossing or window detection where hysteresis would degrade accuracy.
What is the output type of MAX9647AXK+T and how should it be interfaced?
MAX9647AXK+T features an open-drain output (pin 4). It must be used with an external pull-up resistor to a valid logic voltage (e.g., 1.8V, 3.3V, or 5V). The pull-up value affects rise time and power consumption; typical values range from 1kΩ to 10kΩ. This architecture enables wired-OR logic, level translation, and direct interface with microcontroller interrupt inputs.
Can MAX9647AXK+T operate from a 1.8V supply?
Yes, MAX9647AXK+T is fully guaranteed to operate from +1.8V to +5.5V. At 1.8V, it delivers 50µA supply current (typ), 56mV output saturation voltage at 1mA sink, and maintains full functionality across its entire -40°C to +125°C temperature range - enabling direct integration into modern ultra-low-voltage IoT and wearable platforms.
Is MAX9647AXK+T pin-compatible with other comparators?
Yes, MAX9647AXK+T is a drop-in, pin-for-pin replacement for the LMX331/LMX331H in the SC70-5 package. Pin mapping (IN+, VSS, IN-, OUT, VDD) matches exactly, and electrical characteristics including supply range, propagation delay, and input common-mode range are either identical or improved - allowing seamless migration without PCB changes.
MAX9647AXK+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:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 1.8V ~ 5.5V
- :
- 7mV @ 5V
- Voltage - Input Offset (Max):
- 0.25µA @ 5V
- Current - Input Bias (Max):
- 35mA
- Current - Output (Typ):
- 120µA
- Current - Quiescent (Max):
- 90dB PSRR
- CMRR, PSRR (Typ):
- 110ns
- Propagation Delay (Max):
- 2mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- SC-70-5
MAX9647AXK+T FAQ
1.How can I place an order for MAX9647AXK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9647AXK+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 MAX9647AXK+T reliable?
The price and inventory of MAX9647AXK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9647AXK+T is usually 5 days.
3.What payment methods are accepted for MAX9647AXK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9647AXK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9647AXK+T?
MAX9647AXK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9647AXK+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 MAX9647AXK+T?
For technical support, including MAX9647AXK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9647AXK+T requirements.
6.How does Aetrix verify that MAX9647AXK+T is sourced from the original manufacturer or authorized distributors?
All MAX9647AXK+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 MAX9647AXK+T meets industry standards.
7.What is the process for return or replacement of MAX9647AXK+T?
All MAX9647AXK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9647AXK+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 MAX9647AXK+T part is unused and in its original packaging.
Return procedure for MAX9647AXK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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