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Analog Devices Inc./Maxim Integrated MAX9647AUK+T
- Part No.:
- MAX9647AUK+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Comparators
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MAX9647AUK+T.pdf
- Description:
- IC COMPARATOR 1 GEN PUR SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,245
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Product details
Overview
MAX9647AUK+T from Maxim Integrated is a single, low-voltage, open-drain comparator in a 5-pin SOT23 package, operating from +1.8V to +5.5V with 60µA supply current at 5V, −40°C to +125°C temperature range, and 120mV output saturation voltage at 4mA sink load-used for precision threshold detection in battery-powered portable electronics.
For engineers reviewing the MAX9647AUK+T datasheet, MAX9647AUK+T pinout, MAX9647AUK+T application, or MAX9647AUK+T equivalent, this page delivers verified electrical specs, thermal behavior, hysteresis-free operation, SC70/SOT23 package mapping, and real-world design context for low-power, space-constrained signal conditioning.
Technical Context
The MAX9647AUK+T implements a BiCMOS comparator core with rail-to-rail input common-mode range extending 0.1V below VSS and up to VDD − 0.7V, enabling ground-referenced sensing. It features no phase reversal under overdriven inputs and delivers 50ns–120ns propagation delay (tPHL/tPLH) depending on overdrive and supply voltage.
Unlike the MAX9648 variant, MAX9647AUK+T has zero internal hysteresis-requiring external feedback for noise immunity in slow-signal applications. Its open-drain output supports flexible pull-up configurations and mixed-voltage interfacing, while PSRR reaches 90dB across 1.8V–5.5V operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.8V to +5.5V - enables direct interface with Li-ion, coin-cell, and 3.3V/5V logic rails without level shifting |
| Input Offset Voltage | 0.4mV (typ), 9mV (max, −40°C to +125°C) - ensures stable trip-point accuracy across automotive-grade temperature extremes |
| Propagation Delay | 50ns (tPHL), 100ns (tPLH) at 100mV overdrive, 5V - supports >1MHz signal monitoring in fast-response systems |
| Supply Current | 60µA per channel at VDD = +5.0V - allows multi-comparator integration in ultra-low-power wake-up circuits |
| Output Saturation Voltage | 120mV at ISINK = 4mA - minimizes voltage drop across pull-up resistors, preserving noise margin in 1.8V I/O domains |
| Input Bias Current | ±400nA (max, −40°C to +125°C) - permits high-impedance sensor interfaces (e.g., thermistors, photodiodes) without significant error |
| PSRR | 90dB (typ) - rejects supply ripple in noisy battery-fed environments, critical for stable reference comparison |
Pinout & Package
MAX9647AUK+T uses a 5-pin SOT23 package (2.9mm × 1.6mm × 1.1mm body, 0.95mm pitch), optimized for high-density PCB layouts in handheld devices.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN+ | Noninverting Input | Accepts analog signals down to 0.1V below VSS; no phase reversal if overdriven beyond common-mode limits |
| 2 VSS | Negative Supply | Must be connected to system ground; serves as reference for input common-mode and output low-state |
| 3 IN− | Inverting Input | Differential input node; matched to IN+ for offset and bias current performance |
| 4 OUT | Open-Drain Output | Requires external pull-up; sinks up to 35mA; compatible with 1.8V/3.3V/5V logic families via resistor selection |
| 5 VDD | Positive Supply | Supplies internal circuitry; bypassing with 0.1µF capacitor near pin essential for AC stability |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed +1.8V to +5.5V operation | Supports direct connection to modern low-voltage microcontrollers and sensors without regulator overhead |
| Input common-mode range includes ground | Enables zero-crossing detection and battery-voltage monitoring referenced to system GND |
| No phase reversal on overdriven inputs | Prevents false triggering when inputs exceed supply rails-critical for unregulated or fault-condition sensing |
| Low output saturation voltage (120mV) | Reduces power loss and improves noise immunity in 1.8V logic interfaces with standard pull-up resistors |
| −40°C to +125°C automotive temperature range | Validated for under-hood, industrial, and extended-life portable equipment deployments |
Applications
| Battery Voltage Monitor | USB Power Path Control |
|---|---|
|
Use Scenario: Detecting low-battery condition in Bluetooth earbuds before shutdown. IC Role / Device Role / Timing Role: Comparator compares battery voltage against 3.0V reference to assert low-battery flag. Use Value: 60µA quiescent current extends standby time; 120mV VOL ensures clean logic-low assertion into 3.3V MCU GPIO. |
Use Scenario: Enabling/disabling USB VBUS path based on host negotiation status. IC Role / Device Role / Timing Role: Compares CC line voltage to determine UFP/DFP role and control power switch gate. Use Value: 50ns tPHL enables sub-microsecond response to USB PD contract changes; open-drain output interfaces directly with PMIC enable pins. |
| Thermal Cutoff Circuit | Capacitive Touch Threshold Detector |
|
Use Scenario: Shutting down motor driver when NTC thermistor voltage crosses safety limit. IC Role / Device Role / Timing Role: Compares thermistor divider output to fixed reference to trigger fault latch. Use Value: No phase reversal prevents false trips during rapid temperature transients; ±400nA IB avoids loading high-R thermistor networks. |
Use Scenario: Detecting finger proximity on smartphone bezel using self-capacitance delta. IC Role / Device Role / Timing Role: Compares filtered sense-node voltage to adaptive baseline to generate touch interrupt. Use Value: 90dB PSRR rejects switching-noise coupling from display backlight drivers; 1.8V operation matches SoC I/O voltage domain. |
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; 10mV max VOS at +25°C only | Lacks full −40°C to +125°C spec coverage; unsuitable for automotive-qualified designs requiring extended temp validation | Select LMX331HMM/NOPB only for cost-sensitive consumer applications where 1.8V start-up and wide-temp operation are not required. |
| TLV3701DBVR | Same SOT23-5 package; 1.8V–5.5V range; but push-pull output (not open-drain); 350mV VOL at 4mA | Cannot share pull-up with other logic; incompatible with wired-OR bus architectures or mixed-voltage level translation | Choose TLV3701DBVR only when push-pull drive is needed and system does not require open-drain flexibility or <150mV VOL. |
Compared with LMX331HMM/NOPB and TLV3701DBVR, MAX9647AUK+T uniquely combines guaranteed 1.8V operation, open-drain output with 120mV VOL, −40°C to +125°C qualification, and 60µA supply current-making it optimal for space- and power-constrained industrial and portable designs demanding robust, low-voltage threshold detection.
Availability
MAX9647AUK+T is available at Aetrix Electronics and suitable for battery-powered electronics, mobile communications, and general-purpose low-voltage applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX9647AUK+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 company specializing in analog and mixed-signal ICs for power, sensing, interface, and timing applications, now part of Analog Devices.
The MAX9647/MAX9648 family was designed for general-purpose, low-voltage comparator functions in space-constrained portable and battery-operated systems-emphasizing low quiescent current, wide supply range, and robust input behavior.
FAQ
What is the maximum operating temperature for MAX9647AUK+T?
The MAX9647AUK+T is specified for continuous operation from −40°C to +125°C, with junction temperature limited to +150°C. This rating is fully tested and guaranteed per the datasheet's Operating Temperature Range specification, making MAX9647AUK+T suitable for under-hood automotive modules and industrial edge sensors where ambient heat exceeds 85°C.
Does MAX9647AUK+T include internal hysteresis?
No, MAX9647AUK+T has zero internal hysteresis. Only the MAX9648 variants (e.g., MAX9648AUK+T) integrate 2mV of factory-trimmed hysteresis. For noise immunity with MAX9647AUK+T, external positive feedback via two resistors must be implemented per Figure 2 in the datasheet-ensuring clean transitions on slow-moving or noisy input signals.
What is the recommended bypass capacitor for MAX9647AUK+T?
A 0.1µF ceramic capacitor placed between VDD and VSS, located within 2mm of the MAX9647AUK+T pins, is mandatory for stable operation. This minimizes high-frequency supply impedance and prevents oscillation due to parasitic inductance-especially critical when driving capacitive loads or operating near RF sources like cellular antennas in portable devices using MAX9647AUK+T.
Can MAX9647AUK+T operate from a 1.8V supply?
Yes, MAX9647AUK+T is fully specified and guaranteed for operation at +1.8V supply, delivering 50µA typical supply current, 56mV output saturation voltage at 1mA sink, and functional propagation delay. This capability is explicitly validated in the DC Electrical Characteristics table for 1.8V operation and confirmed across the full −40°C to +125°C range-enabling direct use with modern ultra-low-voltage SoCs and sensors.
What is the input common-mode voltage range of MAX9647AUK+T?
The input common-mode voltage range of MAX9647AUK+T extends from (VSS − 0.1V) to (VDD − 0.7V). At VDD = 1.8V and VSS = 0V, this means inputs can swing from −0.1V to +1.1V-supporting ground-referenced signals and partial rail-to-rail sensing without external level-shifting circuitry, a key enabler for battery-monitoring and sensor-interface applications using MAX9647AUK+T.
MAX9647AUK+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package/Case:
- SC-74A, SOT-753
- 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
- :
- SOT-23-5
MAX9647AUK+T FAQ
1.How can I place an order for MAX9647AUK+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX9647AUK+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 MAX9647AUK+T reliable?
The price and inventory of MAX9647AUK+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX9647AUK+T is usually 5 days.
3.What payment methods are accepted for MAX9647AUK+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX9647AUK+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX9647AUK+T?
MAX9647AUK+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX9647AUK+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 MAX9647AUK+T?
For technical support, including MAX9647AUK+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX9647AUK+T requirements.
6.How does Aetrix verify that MAX9647AUK+T is sourced from the original manufacturer or authorized distributors?
All MAX9647AUK+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 MAX9647AUK+T meets industry standards.
7.What is the process for return or replacement of MAX9647AUK+T?
All MAX9647AUK+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX9647AUK+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 MAX9647AUK+T part is unused and in its original packaging.
Return procedure for MAX9647AUK+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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