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Analog Devices Inc./Maxim Integrated MAX6465XR22+T
- Part No.:
- MAX6465XR22+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6465XR22+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,950
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Product details
Overview
MAX6465XR22+T from Maxim Integrated is a micropower supervisory circuit with active-high push-pull output, 2.2V lower trip threshold (VTH−), and 150ms minimum reset timeout period. It monitors VCC supply voltage in battery-powered systems, asserts reset for ≥150ms after VCC recovers above VTH+, and operates from −40°C to +125°C with ±2.5% threshold accuracy and 1.0µA supply current at 3.6V.
For engineers reviewing the MAX6465XR22+T datasheet, MAX6465XR22+T pinout, MAX6465XR22+T application, or MAX6465XR22+T equivalent, key selection criteria include guaranteed 150ms reset timeout, factory-trimmed 2.2V detection threshold, ultra-low 1.0µA quiescent current, push-pull active-high output stage, and SC70-3 package compatibility with space-constrained portable designs.
Technical Context
The MAX6465XR22+T implements a precision bandgap reference and comparator with internally trimmed resistor networks to set VTH− = 2.200V (±2.5%) and VTH+ = VTH− × 1.05 = 2.310V. Its internal hysteresis prevents output chatter during slow-rising/falling VCC transitions near threshold.
As a µP supervisory variant (not a simple voltage detector), it incorporates a dedicated timeout circuit that holds the active-high output asserted for ≥150ms after VCC exceeds VTH+, independent of propagation delay. The device requires no external components and is fully specified across −40°C to +125°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Threshold (VTH−) | 2.200V ±2.5% over −40°C to +125°C - factory-trimmed trip point for reliable brownout detection at nominal 2.2V rails |
| Reset Timeout Period | 150ms minimum - ensures microcontroller reset pulse meets minimum assertion time for reliable boot initialization |
| Supply Current (ICC) | 1.0µA typical at 3.6V and +25°C - enables multi-year battery life in always-on monitoring applications |
| Output Type | Push-pull, active-high - drives logic-high directly without pull-up resistor; sinks current when deasserted |
| Hysteresis | 5% (VTH+ = VTH− × 1.05) - eliminates false resets during noisy or slowly recovering power rails |
| Operating Temperature | −40°C to +125°C - supports automotive under-hood, industrial control, and extended-range portable equipment |
| Package | SC70-3 - 1.25mm × 2.0mm footprint ideal for compact PCB layouts in handheld medical and IoT devices |
Pinout & Package
MAX6465XR22+T is housed in a 3-pin SC70-3 package with exposed pad (not electrically connected). Pin 1 is OUT, Pin 2 is GND, and Pin 3 is VCC. The package supports reflow soldering per JEDEC J-STD-020 and is rated for operation up to +125°C ambient.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Active-high push-pull output | Drives high when VCC < VTH−; drives low when VCC > VTH+ and timeout expires - no external pull-up required |
| GND (Pin 2) | Ground reference | Return path for internal bandgap, comparator, and output stage; must be low-impedance connection to system ground plane |
| VCC (Pin 3) | Supply and monitored input | Single pin supplies device and provides voltage to be supervised - accepts 1.2V to 6.0V, monitors down to 1.6V threshold |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 1.0µA supply current | Enables continuous supervision in coin-cell–powered devices for >10 years without battery replacement |
| Factory-set 2.2V threshold with ±2.5% accuracy | Eliminates calibration overhead and external resistor networks for 2.2V LDO or battery monitoring |
| 150ms minimum reset timeout | Guarantees sufficient reset pulse width for ARM Cortex-M and other modern MCUs requiring ≥100ms assertion |
| 5% internal hysteresis | Prevents oscillatory reset behavior during gradual power-up or noise-induced dips near 2.2V |
| SC70-3 package with −40°C to +125°C rating | Supports miniaturized designs in harsh environments including automotive body electronics and industrial sensors |
Applications
| Battery Voltage Monitoring | Microcontroller Reset Supervision |
|---|---|
Use Scenario: Continuous monitoring of Li-ion cell voltage during discharge in portable medical monitors. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high reset signal when cell voltage drops below 2.2V, holding reset for ≥150ms after recovery. Use Value: Prevents MCU operation in undervoltage condition while ensuring clean restart after recharge; 1.0µA ICC extends battery runtime by >30% versus higher-current supervisors. |
Use Scenario: Power-on and brownout reset generation for an STM32L4 MCU in a smart sensor node. IC Role / Device Role / Timing Role: Provides guaranteed 150ms reset pulse on power-up and during transient dips below 2.2V on the 3.3V rail. Use Value: Meets STM32L4's tRST ≥ 10µs and tPU ≥ 10ms requirements with margin; eliminates need for RC timing network and associated drift. |
| Load Switch Sequencing | Noise-Immune Power-Rail Monitoring |
Use Scenario: Enabling a 2.2V analog front-end only after main 3.3V rail stabilizes in a battery-powered data logger. IC Role / Device Role / Timing Role: Active-high output drives enable pin of load switch; asserts when 3.3V rail falls below 2.2V, disabling downstream circuitry. Use Value: Prevents analog section operation during brownout; 5% hysteresis avoids chatter during rail settling; SC70-3 saves board area vs. SOT23-5 alternatives. |
Use Scenario: Monitoring 2.2V supply in an automotive infotainment module subject to load-dump transients. IC Role / Device Role / Timing Role: Detects sustained drop below 2.2V while ignoring sub-20µs glitches per Typical Operating Characteristics graph (toc04). Use Value: Immunity to short transients prevents spurious resets; ±2.5% threshold accuracy ensures consistent behavior across temperature extremes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6465UR22+T | SOT23-3 package (vs. SC70-3); identical electrical specs and 2.2V threshold | Larger footprint (2.9mm × 1.6mm vs. 2.0mm × 1.25mm); same thermal performance and pinout | Select UR version if board layout accommodates larger SOT23-3 or requires established assembly process compatibility |
| TPS3808G125DBVR | 2.5V threshold (not 2.2V); 200ms timeout; 1.1µA ICC; SOT23-6 package | Requires PCB redesign for 6-pin layout; lacks 2.2V option for precise 2.2V rail monitoring | Choose only if 2.5V threshold aligns with system rail and SOT23-6 footprint is available |
Compared with MAX6465XR22+T, the MAX6465UR22+T offers identical supervision functionality in a mechanically larger but widely adopted SOT23-3 package, while the TPS3808G125DBVR provides longer timeout and similar current draw but at a mismatched 2.5V threshold and incompatible 6-pin footprint.
Availability
MAX6465XR22+T is available at Aetrix Electronics and suitable for battery voltage monitoring, microcontroller reset supervision, and load-switch sequencing requiring stable component supply in portable medical devices, industrial sensors, and automotive body electronics.
Supply support for MAX6465XR22+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 power management, sensing, and interface applications, with emphasis on low-power, high-reliability solutions.
The MAX6461–MAX6466 family was developed specifically for ultra-low-power voltage supervision in space- and energy-constrained systems, targeting portable, automotive, and industrial applications where long battery life and robust reset behavior are critical.
FAQ
What is the exact voltage threshold and hysteresis of MAX6465XR22+T?
The MAX6465XR22+T has a factory-trimmed lower trip threshold (VTH−) of 2.200V ±2.5% over −40°C to +125°C, and an upper trip threshold (VTH+) of VTH− × 1.05 = 2.310V, yielding 5% hysteresis. These values are confirmed in Table 1a and Table 1b of the datasheet and apply directly to the MAX6465XR22+T variant.
Does MAX6465XR22+T require external components for basic operation?
No, MAX6465XR22+T requires no external components for core supervision functionality. Its precision bandgap reference, comparator, trimmed resistors, and timeout circuit are fully integrated. Only decoupling capacitance (e.g., 0.1µF ceramic) near VCC/GND is recommended for noise immunity - no pull-up resistors, timing capacitors, or calibration elements are needed.
What is the reset timeout behavior of MAX6465XR22+T during power-up?
During power-up, MAX6465XR22+T asserts its active-high output when VCC rises above VTH+ (2.310V), then holds it asserted for a minimum of 150ms regardless of subsequent VCC stability. This guarantees the reset pulse meets MCU requirements before release, and the timeout is internally generated - no external capacitor or resistor sets this duration.
Can MAX6465XR22+T monitor supply voltages below 2.2V?
MAX6465XR22+T is designed to monitor VCC down to 1.2V per Absolute Maximum Ratings, but its detection threshold is fixed at 2.2V. It will not assert reset for drops below 2.2V - for example, a 1.8V rail would never trigger the device. To supervise lower rails, a different suffix (e.g., MAX6465XR18+T for 1.8V) must be selected from the 30 standard versions.
How does the SC70-3 package of MAX6465XR22+T compare to SOT23-3 alternatives?
The MAX6465XR22+T in SC70-3 measures 1.25mm × 2.0mm, ~40% smaller than the 1.6mm × 2.9mm SOT23-3 footprint (e.g., MAX6465UR22+T). Both share identical pinout (OUT-GND-VCC), thermal ratings (−40°C to +125°C), and electrical specs. The SC70-3 enables denser layouts in size-critical applications like hearing aids or wearable sensors where board area is at a premium.
MAX6465XR22+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.2V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6465XR22+T FAQ
1.How can I place an order for MAX6465XR22+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6465XR22+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 MAX6465XR22+T reliable?
The price and inventory of MAX6465XR22+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6465XR22+T is usually 5 days.
3.What payment methods are accepted for MAX6465XR22+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6465XR22+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6465XR22+T?
MAX6465XR22+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6465XR22+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 MAX6465XR22+T?
For technical support, including MAX6465XR22+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6465XR22+T requirements.
6.How does Aetrix verify that MAX6465XR22+T is sourced from the original manufacturer or authorized distributors?
All MAX6465XR22+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 MAX6465XR22+T meets industry standards.
7.What is the process for return or replacement of MAX6465XR22+T?
All MAX6465XR22+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6465XR22+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 MAX6465XR22+T part is unused and in its original packaging.
Return procedure for MAX6465XR22+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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