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Analog Devices Inc./Maxim Integrated MAX6465UR46+T
- Part No.:
- MAX6465UR46+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6465UR46+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,399
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Product details
Overview
MAX6465UR46+T from Maxim Integrated is a micropower supervisory circuit with active-high push-pull output, 4.6V lower trip threshold (VTH− = 4.600V typ), 150ms minimum reset timeout, ±2.5% threshold accuracy over −40°C to +125°C, and 1.0µA supply current at 3.6V. It monitors system VCC in battery-backed microcontroller systems to assert a clean, debounced reset signal during brownout conditions.
For engineers reviewing the MAX6465UR46+T datasheet, MAX6465UR46+T pinout, MAX6465UR46+T application, or MAX6465UR46+T equivalent, key selection criteria include guaranteed 150ms reset pulse width, internal 5% hysteresis (VTH+ = 4.83V typ), immunity to sub-20µs transients at 4.6V overdrive, SC70-3 package compatibility, and lead-free RoHS-compliant +T packaging.
Technical Context
The MAX6465UR46+T implements a precision bandgap reference, comparator, and internally trimmed resistor network to set a factory-trimmed 4.6V detection threshold with 5% hysteresis. Its output remains asserted for ≥150ms after VCC rises above VTH+, ensuring reliable µP reset deassertion timing independent of external RC networks.
This device operates across the full industrial temperature range (−40°C to +125°C) with no external components required. Its 1.0µA quiescent current enables use in always-on battery monitoring paths, while its 17µs propagation delay (falling edge) and transient immunity support robust operation in noisy power environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 1.0µA at 3.6V - enables multi-year battery life in coin-cell–powered systems |
| Lower Threshold (VTH−) | 4.600V (typ), ±2.5% over temp - precise detection of 5V rail undervoltage |
| Upper Threshold (VTH+) | 4.830V (typ), VTH+ = VTH− × 1.05 - built-in hysteresis prevents chatter near trip point |
| Reset Timeout Period | 150ms (min), 260ms (typ), 430ms (max) - guarantees sufficient µP initialization time |
| Propagation Delay | 17µs (falling), 100µs (rising) - fast response to supply collapse, controlled rise-time assertion |
| Operating Temp Range | −40°C to +125°C - qualified for under-hood automotive and industrial embedded use |
| Output Type | Active-high push-pull - drives µP RESET pin directly without pull-up resistor |
Pinout & Package
MAX6465UR46+T is housed in a 3-pin SC70-3 package (2.0mm × 2.1mm × 0.9mm), optimized for space-constrained portable designs. Pin 1 is OUT (active-high push-pull), Pin 2 is GND, and Pin 3 is VCC - identical pinout to SOT23-3 but with smaller footprint and thermal profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Reset output | Active-high push-pull driver capable of sourcing 1.5mA at VCC ≥ 1.8V; asserts high during VCC < 4.6V and holds high ≥150ms after VCC > 4.83V |
| 2 (GND) | Ground reference | Primary return path for internal bandgap and comparator; must be low-impedance connection to system ground plane |
| 3 (VCC) | Supply & monitored input | Single pin serves as both power source and voltage sense node; accepts 1.2V–6.0V, monitors down to 4.6V threshold |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low supply current | 1.0µA at 3.6V - eliminates need for sleep-mode switching in always-on supervision |
| Factory-trimmed threshold | 4.600V ±2.5% over −40°C to +125°C - removes calibration overhead and external resistors |
| Guaranteed reset timeout | 150ms minimum - ensures µP completes boot sequence before release, no external capacitor needed |
| Transient immunity | Immune to ≤20µs glitches at 100mV overdrive - suppresses noise-induced false resets |
| Lead-free packaging | +T suffix denotes RoHS-compliant, matte-tin SC70-3 - supports modern assembly and environmental compliance |
Applications
| Power-Supply Brownout Detection | Microcontroller Reset Supervision |
|---|---|
|
Use Scenario: Monitoring a 5V system rail in an industrial PLC module where input voltage may dip due to load switching or cable drop. IC Role / Device Role / Timing Role: MAX6465UR46+T asserts active-high RESET for ≥150ms when VCC falls below 4.6V, holding µP in reset until stable recovery above 4.83V. Use Value: Prevents erratic firmware execution during marginal supply conditions without adding external timing components. |
Use Scenario: Providing fail-safe reset to an ARM Cortex-M0 in a portable medical sensor that runs from a single Li-ion cell (3.0–4.2V) with 5V DC/DC output. IC Role / Device Role / Timing Role: MAX6465UR46+T supervises the 5V DC/DC output, asserting RESET if output collapses - critical for data integrity during power loss. Use Value: 1.0µA quiescent current extends battery runtime; 4.6V threshold aligns precisely with 5V rail dropout margin. |
| Battery Voltage Monitoring | Noise-Immune System Initialization |
|
Use Scenario: Detecting end-of-life voltage in a backup supercapacitor powering real-time clock (RTC) and SRAM in a smart meter. IC Role / Device Role / Timing Role: MAX6465UR46+T monitors capacitor voltage decay; triggers active-high signal to initiate graceful shutdown when voltage drops below 4.6V. Use Value: Factory-trimmed 4.6V threshold eliminates resistor divider error; 5% hysteresis prevents oscillation during slow discharge. |
Use Scenario: Ensuring deterministic startup in an automotive infotainment head unit exposed to alternator ripple and load-dump transients. IC Role / Device Role / Timing Role: MAX6465UR46+T provides glitch-immune reset assertion with 17µs falling-edge response and 150ms hold time after recovery. Use Value: Immunity to ≤20µs transients avoids spurious resets; push-pull output drives heavy capacitive loads on RESET net directly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6465UR46-T | Same electrical specs and SC70-3 package, but leaded (SnPb) finish instead of lead-free +T | Not suitable for RoHS-compliant production; requires Pb-compatible reflow profile | Select MAX6465UR46-T only for legacy Pb-based assembly or prototyping where RoHS is not mandated |
| TPS3808G33DBVR | 3.3V fixed threshold, 200ms timeout, 2.5µA ICC, SOT23-5 package, different pinout | Requires PCB redesign (5-pin vs 3-pin); unsuitable for 4.6V detection or space-constrained layouts | Choose only if 3.3V supervision is needed and board layout allows SOT23-5 footprint and routing changes |
Compared with MAX6465UR46+T, the leaded MAX6465UR46-T offers identical performance but fails RoHS compliance, while the TPS3808G33DBVR shifts threshold and package - neither provides drop-in replacement capability, making MAX6465UR46+T uniquely suited for 4.6V, lead-free, ultra-small-footprint µP reset needs.
Availability
MAX6465UR46+T is available at Aetrix Electronics and suitable for battery-powered medical devices, automotive body control modules, and industrial IoT edge nodes requiring stable component supply with guaranteed long-term availability and RoHS compliance.
Supply support for MAX6465UR46+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, sensing, and interface applications, with emphasis on high-reliability, low-power, and small-footprint solutions.
The MAX6461–MAX6466 family was engineered specifically for cost-sensitive, space-constrained embedded systems needing reliable, zero-component voltage supervision and µP reset generation across harsh temperature environments.
FAQ
What is the exact voltage threshold behavior of the MAX6465UR46+T?
The MAX6465UR46+T has a factory-trimmed lower trip threshold (VTH−) of 4.600V (typical) with ±2.5% accuracy over −40°C to +125°C. Its upper threshold (VTH+) is 4.830V (typical), calculated as VTH− × 1.05, providing 5% internal hysteresis to prevent output oscillation near the trip point. This behavior is confirmed in Table 1a and 1b of the MAX6465UR46+T datasheet.
Does the MAX6465UR46+T require any external components to function?
No, the MAX6465UR46+T requires zero external components. Its precision bandgap reference, comparator, trimmed resistor network, hysteresis circuit, and 150ms timeout are fully integrated. Unlike discrete supervisor solutions, it eliminates external resistors, capacitors, and diodes - reducing BOM count, PCB area, and calibration effort while improving reliability.
How does the MAX6465UR46+T handle short voltage transients?
The MAX6465UR46+T is immune to short-duration falling VCC transients: at a 100mV overdrive (i.e., VCC = 4.5V when VTH− = 4.6V), it tolerates glitches up to ~20µs without asserting reset. This immunity is characterized in the "Maximum VCC Transient Duration vs. VTH− Threshold Overdrive" graph (toc04) and ensures robust operation in electrically noisy environments.
What is the operating temperature range and supply voltage range for the MAX6465UR46+T?
The MAX6465UR46+T is fully specified from −40°C to +125°C and operates with VCC from 1.2V to 6.0V. Its 4.6V threshold remains accurate across this full temperature range, and its 1.0µA supply current is measured at 3.6V with no load. These specifications meet AEC-Q100 Grade 0 requirements for extended-temperature automotive use.
Is the MAX6465UR46+T pin-compatible with other devices in the MAX646x family?
Yes, the MAX6465UR46+T shares identical SC70-3 pinout (OUT-GND-VCC) with all MAX6461–MAX6466 variants in UR_ _-T/+T format. However, functional compatibility depends on variant type: MAX6465 is a µP supervisory circuit (150ms timeout), whereas MAX6461/MAX6462/MAX6463 are voltage detectors (no timeout). Swapping requires verifying output polarity and timing requirements.
MAX6465UR46+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.6V
- 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:
- SOT-23-3
MAX6465UR46+T FAQ
1.How can I place an order for MAX6465UR46+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6465UR46+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 MAX6465UR46+T reliable?
The price and inventory of MAX6465UR46+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6465UR46+T is usually 5 days.
3.What payment methods are accepted for MAX6465UR46+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6465UR46+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6465UR46+T?
MAX6465UR46+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6465UR46+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 MAX6465UR46+T?
For technical support, including MAX6465UR46+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6465UR46+T requirements.
6.How does Aetrix verify that MAX6465UR46+T is sourced from the original manufacturer or authorized distributors?
All MAX6465UR46+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 MAX6465UR46+T meets industry standards.
7.What is the process for return or replacement of MAX6465UR46+T?
All MAX6465UR46+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6465UR46+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 MAX6465UR46+T part is unused and in its original packaging.
Return procedure for MAX6465UR46+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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