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Analog Devices Inc./Maxim Integrated MAX6465XR26+T
- Part No.:
- MAX6465XR26+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6465XR26+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,120
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Product details
Overview
MAX6465XR26+T from Maxim Integrated is a micropower supervisory circuit with 2.6V lower trip threshold (VTH−), 150ms minimum reset timeout, and push-pull active-high output in SC70-3 package. It monitors VCC supply voltage, asserts reset for ≥150ms after VCC recovers above VTH+, and operates from −40°C to +125°C with ±2.5% threshold accuracy. Used in battery-powered medical devices and portable instrumentation for reliable power-on reset.
For engineers reviewing the MAX6465XR26+T datasheet, MAX6465XR26+T pinout, MAX6465XR26+T application, or MAX6465XR26+T equivalent, key selection criteria include guaranteed 150ms reset timeout, 1.0µA supply current at 3.6V, 2.6V threshold tolerance over temperature, and SC70-3 footprint compatibility with space-constrained embedded designs.
Technical Context
The MAX6465XR26+T implements a precision bandgap reference and comparator with internally trimmed resistor networks to set VTH− = 2.600V (±2.5%) and VTH+ = VTH− × 1.05 = 2.730V. Its internal hysteresis prevents chatter during slow-rising/falling VCC transitions near threshold.
This device belongs to the MAX6464–MAX6466 µP supervisory subgroup and features a fixed 150ms minimum reset timeout period-asserting output high when VCC falls below VTH− and holding it high for ≥150ms after VCC exceeds VTH+. No external timing components are required.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +1.2V to +6.0V - supports monitoring of Li+ batteries, 3.3V/5V rails, and low-voltage logic supplies |
| Threshold Voltage (VTH−) | 2.600V ±2.5% (−40°C to +125°C) - factory-trimmed for stable brownout detection at nominal 2.6V system rail |
| Reset Timeout Period | 150ms minimum - ensures microcontroller reset pulse meets ARM/Cortex and PIC minimum assertion time requirements |
| Supply Current | 1.0µA typical at 3.6V - enables multi-year operation on coin-cell batteries in always-on monitoring applications |
| Output Type | Push-pull active-high - drives logic-high reset input directly without pull-up resistor; sinks ≤9mA at VCC ≥4.5V |
| Operating Temperature | −40°C to +125°C - qualified for automotive under-hood, industrial control, and portable medical environments |
| Hysteresis | 5% (VTH+ = VTH− × 1.05) - eliminates false resets during noisy or slowly recovering power rails |
Pinout & Package
MAX6465XR26+T is housed in a 3-pin SC70-3 package (2.0mm × 2.1mm × 0.9mm), optimized for ultra-compact PCB layouts. Pin 1 is OUT, Pin 2 is GND, and Pin 3 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Reset output signal | Push-pull active-high: drives high when VCC < VTH−, holds high ≥150ms after VCC > VTH+, sinks up to 9mA |
| 2 (GND) | Ground reference | Primary return path for internal bandgap and comparator; must be low-impedance connection to system ground plane |
| 3 (VCC) | Supply and monitored input | Single terminal serves as both power source and voltage sense node; no separate VIN required |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1.0µA at 3.6V - extends battery life in portable ECG monitors and glucose meters beyond 5 years |
| Factory-set 2.6V threshold | VTH− = 2.600V ±2.5% over −40°C to +125°C - eliminates calibration effort and external resistor networks |
| Guaranteed 150ms reset timeout | Minimum tRP = 150ms - satisfies JEDEC JESD76 and ARM CoreBoot reset timing compliance |
| Internal 5% hysteresis | VTH+ = VTH− × 1.05 - prevents oscillation during marginal VCC recovery in DC/DC converter start-up sequences |
| SC70-3 lead-free package | RoHS-compliant, 2.0mm × 2.1mm footprint - enables high-density routing in wearable sensor modules |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Continuous vital sign monitoring in handheld pulse oximeters powered by CR2032 coin cells. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high reset to ARM Cortex-M0+ MCU during battery voltage sag below 2.6V. Use Value: 1.0µA supply current extends operational life to >36 months; 150ms timeout ensures full MCU initialization before firmware execution. |
Use Scenario: Environmental data acquisition in remote soil moisture sensors operating on AA alkaline cells. IC Role / Device Role / Timing Role: Voltage monitor triggering controlled shutdown and wake-up reset when supply drops below 2.6V during cold-temperature discharge. Use Value: ±2.5% threshold accuracy maintains consistent low-battery detection across −25°C to +70°C field conditions. |
| Industrial Handheld Scanners | Low-Power IoT Edge Nodes |
Use Scenario: Barcode scanners subjected to repeated drop-induced power glitches in warehouse environments. IC Role / Device Role / Timing Role: Immune-to-transients supervisory IC generating clean reset pulses despite sub-10µs VCC dips. Use Value: Internal hysteresis and transient immunity prevent spurious resets during mechanical shock events. |
Use Scenario: NB-IoT transceivers sleeping for 99% of time, waking periodically to transmit sensor readings. IC Role / Device Role / Timing Role: Reset supervisor ensuring reliable boot after deep-sleep wake-up when VCC ramps slowly from energy harvesting sources. Use Value: Push-pull active-high output drives MCU reset pin directly-no external pull-up needed, reducing BOM count and leakage paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6465UR26+T | SOT23-3 package (same pinout, larger 2.92mm × 1.3mm footprint); identical electrical specs | Preferred where board assembly uses standard SOT23 pick-and-place tooling or requires higher thermal mass | Select MAX6465UR26+T if SC70 placement capability is unavailable or thermal dissipation >320mW is needed. |
| TPS3808G125DBVR | 2.5V threshold (not 2.6V); 200ms timeout; 1.1µA ICC; same SC70-3 package | Requires system-level validation for 2.5V vs. 2.6V trip point; suitable where tighter 2.5V brownout margin is specified | Choose TPS3808G125DBVR only if design mandates TI-qualified AEC-Q100 or requires 200ms timeout headroom. |
Compared with MAX6465XR26+T, the MAX6465UR26+T offers identical functionality in a more widely supported SOT23-3 package, while the TPS3808G125DBVR provides longer timeout and TI qualification but shifts threshold by 100mV-requiring revalidation of brownout behavior in the target system.
Availability
MAX6465XR26+T is available at Aetrix Electronics and suitable for portable medical devices, battery-powered data loggers, industrial handheld scanners, and low-power IoT edge nodes requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6465XR26+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 demanding industrial, medical, and automotive applications, emphasizing low power, high reliability, and small form factors.
The MAX6461–MAX6466 family was engineered specifically for ultra-low-power voltage supervision in space- and energy-constrained systems-delivering factory-trimmed thresholds, integrated hysteresis, and guaranteed timeout without external components.
FAQ
What is the exact voltage threshold and hysteresis of MAX6465XR26+T?
The MAX6465XR26+T has a factory-trimmed lower trip threshold (VTH−) of 2.600V ±2.5% over −40°C to +125°C. Its upper trip threshold (VTH+) is defined as VTH− × 1.05 = 2.730V, yielding 5% hysteresis. This ensures robust immunity to noise and prevents output chatter during slow VCC transitions near the 2.6V threshold.
Does MAX6465XR26+T require external components to operate?
No, MAX6465XR26+T requires no external components. Its precision bandgap reference, comparator, trimmed resistor network, and 150ms timeout circuitry are fully integrated. The push-pull active-high output drives MCU reset inputs directly-eliminating the need for pull-up resistors, capacitors, or trimming potentiometers typically used in discrete reset solutions.
How does the 150ms reset timeout of MAX6465XR26+T benefit microcontroller startup?
The guaranteed minimum 150ms reset timeout of MAX6465XR26+T ensures the microcontroller remains held in reset long enough for power supplies to stabilize, clocks to lock, and internal registers to initialize. This meets or exceeds JEDEC JESD76 and most ARM/Cortex vendor recommendations, preventing erratic boot behavior in systems powered by switching regulators or battery sources with slow ramp-up.
Can MAX6465XR26+T be used in automotive under-hood applications?
Yes, MAX6465XR26+T is fully specified from −40°C to +125°C and qualified for operation in harsh environments. Its ±2.5% threshold accuracy over temperature, 1.0µA supply current, and SC70-3 package make it suitable for non-safety-critical automotive subsystems such as infotainment power sequencing, telematics module supervision, and body control unit auxiliary rail monitoring.
What is the output drive capability of MAX6465XR26+T?
MAX6465XR26+T features a push-pull active-high output capable of sourcing up to 8.0mA at VCC ≥4.5V while maintaining VOH ≥0.8×VCC, and sinking up to 9.0mA while maintaining VOL ≤0.4V. This allows direct interfacing with standard CMOS and TTL inputs without level-shifting circuitry, supporting common 1.8V, 3.3V, and 5V logic families.
MAX6465XR26+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:
- 2.6V
- 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
MAX6465XR26+T FAQ
1.How can I place an order for MAX6465XR26+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6465XR26+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 MAX6465XR26+T reliable?
The price and inventory of MAX6465XR26+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6465XR26+T is usually 5 days.
3.What payment methods are accepted for MAX6465XR26+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6465XR26+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6465XR26+T?
MAX6465XR26+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6465XR26+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 MAX6465XR26+T?
For technical support, including MAX6465XR26+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6465XR26+T requirements.
6.How does Aetrix verify that MAX6465XR26+T is sourced from the original manufacturer or authorized distributors?
All MAX6465XR26+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 MAX6465XR26+T meets industry standards.
7.What is the process for return or replacement of MAX6465XR26+T?
All MAX6465XR26+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6465XR26+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 MAX6465XR26+T part is unused and in its original packaging.
Return procedure for MAX6465XR26+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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