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Analog Devices Inc./Maxim Integrated MAX6465XR16+T
- Part No.:
- MAX6465XR16+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6465XR16+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,210
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Product details
Overview
MAX6465XR16+T from Maxim Integrated is a micropower supervisory circuit with active-high push-pull output, 1.6V threshold (VTH− = 1.600V typ), 150ms minimum reset timeout, and 1.0µA supply current at 3.6V. It monitors VCC in battery-powered systems and asserts reset for ≥150ms after VCC rises above VTH+ (1.672V typ) to ensure reliable µP initialization in portable medical devices and cordless phones.
For engineers reviewing the MAX6465XR16+T datasheet, MAX6465XR16+T pinout, MAX6465XR16+T application, or MAX6465XR16+T equivalent, key selection criteria include guaranteed 150ms reset timeout, ±2.5% threshold accuracy over −40°C to +125°C, SC70-3 package compatibility, and immunity to sub-20µs VCC transients at 100mV overdrive.
Technical Context
The MAX6465XR16+T implements a precision bandgap reference and comparator with internally trimmed resistor networks to set fixed 1.6V detection threshold. Its internal 5% hysteresis (VTH+ = VTH− × 1.05) prevents output chatter during slow-rising/falling supply transitions.
As a µP supervisory variant (not voltage detector), it integrates a monostable timeout circuit that holds the active-high output asserted for ≥150ms after VCC exceeds VTH+, independent of subsequent VCC stability-ensuring sufficient processor boot time before release.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current | 1.0µA at 3.6V - enables >10-year battery life in always-on monitoring applications |
| Voltage Threshold (VTH−) | 1.600V (typ), ±2.5% over −40°C to +125°C - matches Li-ion cell undervoltage cutoff |
| Threshold Hysteresis | 5% (VTH+ = 1.672V typ) - eliminates false resets near trip point |
| Reset Timeout Period | 150ms (min), 260ms (typ), 430ms (max) - guarantees full µP boot sequence completion |
| Propagation Delay | Not specified for MAX6465 - timeout dominates timing behavior, not edge detection latency |
| Operating Temperature | −40°C to +125°C - supports automotive cabin and industrial embedded deployment |
| Output Type | Active-high push-pull - drives CMOS inputs directly without external pullup |
Pinout & Package
MAX6465XR16+T is housed in a 3-pin SC70-3 package (2.0mm × 2.1mm × 0.9mm), optimized for space-constrained portable designs. Pin 1 = OUT (active-high push-pull), Pin 2 = GND, Pin 3 = VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Reset output | Push-pull, active-high - sinks up to 9mA at VCC ≥ 4.5V; no external pullup required |
| 2 (GND) | Ground reference | Return path for internal bandgap and comparator; must be low-impedance |
| 3 (VCC) | Supply & monitored input | Single pin powers device and provides voltage to monitor; operates from 1.2V to 6.0V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 1.0µA at 3.6V - reduces quiescent drain in battery backup rails |
| Factory-trimmed threshold | 1.6V (VTH−) with ±2.5% accuracy - eliminates calibration overhead and external resistors |
| Guaranteed timeout | 150ms min reset assertion - ensures reliable microcontroller startup across voltage/temp |
| Transient immunity | Immune to <20µs VCC glitches at 100mV overdrive - suppresses noise-induced false resets |
| Wide temperature range | Specified from −40°C to +125°C - qualified for under-hood and industrial environments |
Applications
| Portable Medical Sensors | Cordless Phone Power Management |
|---|---|
Use Scenario: Continuous glucose monitor powered by coin-cell battery with strict low-power requirements. IC Role / Device Role / Timing Role: Supervises main supply rail and triggers controlled shutdown when battery drops below 1.6V, then holds reset active for ≥150ms on recovery to prevent brownout-induced firmware corruption. Use Value: Eliminates need for discrete RC timing network while guaranteeing deterministic reset duration across temperature extremes. |
Use Scenario: Base station power sequencing where MCU must initialize only after stable 3.3V rail is confirmed. IC Role / Device Role / Timing Role: Monitors 3.3V DC/DC output and asserts active-high reset to µP until rail exceeds 1.672V and remains stable for ≥150ms. Use Value: Prevents premature firmware execution during power-up ramp; push-pull output drives µP's active-high reset pin directly. |
| Industrial Data Loggers | Smart Wearables |
Use Scenario: Battery-backed environmental logger operating in −40°C freezer environments. IC Role / Device Role / Timing Role: Detects VCC sag below 1.6V during cold-start battery impedance rise and enforces 150ms reset hold to allow oscillator stabilization and flash initialization. Use Value: ±2.5% threshold accuracy over full −40°C to +125°C range ensures consistent trip point regardless of ambient conditions. |
Use Scenario: Fitness tracker using single-cell Li-ion with dynamic load switching causing transient dips. IC Role / Device Role / Timing Role: Filters short VCC glitches (<20µs) while asserting reset on sustained undervoltage, ensuring clean boot after deep sleep wake-up. Use Value: Internal hysteresis and transient immunity prevent spurious resets during RF transmission bursts or display refresh. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6465UR16+T | SOT23-3 package (2.9mm × 1.6mm); identical electrical specs | Larger footprint but higher thermal mass; preferred for manual assembly or high-vibration environments | Select when board layout allows larger pad pitch or requires enhanced mechanical robustness |
| TPS3808G16DBVR | 1.6V threshold, 200ms timeout, 1.1µA ICC, SOT23-6 package | Includes manual reset input and watchdog timer - adds complexity beyond basic supervision | Choose only if system requires external reset initiation or periodic watchdog refresh capability |
Compared with MAX6465XR16+T, the MAX6465UR16+T offers identical supervision functionality in a physically larger but more manufacturable SOT23-3 package, while the TPS3808G16DBVR introduces unnecessary features (manual reset, watchdog) for applications requiring only fixed-timing reset assertion.
Availability
MAX6465XR16+T is available at Aetrix Electronics and suitable for portable medical devices, cordless phone base stations, industrial data loggers, and smart wearables requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6465XR16+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 ultra-low-power and high-reliability solutions.
The MAX6461–MAX6466 family was engineered specifically for battery-critical systems needing deterministic reset timing and minimal quiescent current-targeting portable, medical, and industrial edge devices.
FAQ
What is the exact reset timeout behavior of the MAX6465XR16+T?
The MAX6465XR16+T asserts its active-high output when VCC falls below 1.600V (VTH−) and holds it asserted for a minimum of 150ms after VCC rises above 1.672V (VTH+). This timeout is guaranteed across −40°C to +125°C and does not require external components. The MAX6465XR16+T uses an internal monostable circuit-not propagation delay-to enforce this timing.
Does the MAX6465XR16+T require an external pullup resistor on its OUT pin?
No. The MAX6465XR16+T features a push-pull output stage configured for active-high operation, meaning it actively drives both logic high and logic low states. Unlike open-drain variants, the MAX6465XR16+T does not require an external pullup resistor-reducing BOM count and PCB area.
How accurate is the 1.6V threshold of the MAX6465XR16+T over temperature?
The MAX6465XR16+T maintains ±2.5% threshold accuracy over the full −40°C to +125°C operating range. At +25°C, VTH− is 1.600V (typ), with min/max of 1.576V/1.624V; at temperature extremes, it shifts to 1.560V (min) and 1.640V (max), all within the ±2.5% bound relative to nominal.
Can the MAX6465XR16+T monitor supply voltages below 1.6V?
No. The MAX6465XR16+T is factory-trimmed for a fixed 1.6V lower trip threshold (VTH−) and cannot detect voltages below this point. For sub-1.6V monitoring, consider the MAX6465XR15+T (1.5V variant) or other members of the MAX6461–MAX6466 family with appropriate suffixes per Table 1a.
What is the maximum VCC voltage the MAX6465XR16+T can withstand?
The MAX6465XR16+T has an absolute maximum VCC rating of +7V, but its functional operating range is +1.2V to +6.0V. Operation above +6.0V risks permanent damage, while operation below +1.2V may cause undefined output behavior. The device draws only 1.0µA at 3.6V, making it ideal for primary battery rails.
MAX6465XR16+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:
- 1.6V
- 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
MAX6465XR16+T FAQ
1.How can I place an order for MAX6465XR16+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6465XR16+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 MAX6465XR16+T reliable?
The price and inventory of MAX6465XR16+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6465XR16+T is usually 5 days.
3.What payment methods are accepted for MAX6465XR16+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6465XR16+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6465XR16+T?
MAX6465XR16+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6465XR16+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 MAX6465XR16+T?
For technical support, including MAX6465XR16+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6465XR16+T requirements.
6.How does Aetrix verify that MAX6465XR16+T is sourced from the original manufacturer or authorized distributors?
All MAX6465XR16+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 MAX6465XR16+T meets industry standards.
7.What is the process for return or replacement of MAX6465XR16+T?
All MAX6465XR16+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6465XR16+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 MAX6465XR16+T part is unused and in its original packaging.
Return procedure for MAX6465XR16+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6465XR16+T Tags
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MIC826SYMT-TR
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APX803L20-29SA-7
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