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Analog Devices Inc./Maxim Integrated MAX6461UR16+T
- Part No.:
- MAX6461UR16+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6461UR16+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,776
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Product details
Overview
MAX6461UR16+T from Maxim Integrated is a 1.6V ultra-low-power voltage detector in SOT23-3 package, featuring 1.0µA supply current, ±2.5% threshold accuracy over -40°C to +125°C, and 17µs propagation delay. It monitors VCC for brownout detection in battery-powered microcontroller systems, asserting active-low push-pull output when VCC drops below 1.6V (VTH−) and releasing only after rising above 1.68V (VTH+ = VTH− × 1.05).
For engineers reviewing the MAX6461UR16+T datasheet, MAX6461UR16+T pinout, MAX6461UR16+T application, or MAX6461UR16+T equivalent, key selection criteria include its fixed 1.6V trip point, guaranteed hysteresis, SC70/SOT23 footprint compatibility, and suitability for space-constrained portable equipment requiring sub-2µA quiescent operation.
Technical Context
The MAX6461UR16+T implements a precision bandgap reference with internally trimmed resistor networks to set its factory-trimmed 1.6V lower threshold (VTH−) and 1.68V upper threshold (VTH+). Its comparator-based architecture includes built-in 5% hysteresis to prevent output chatter during slow-rising/falling supply transitions.
This device operates as a standalone reset supervisor without external components: it draws only 1.0µA at 3.6V, maintains output assertion until VCC exceeds VTH+, and guarantees immunity to transients ≤15µs at 100mV overdrive - critical for reliable µP reset in noisy battery-supplied environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2V to 6.0V - supports operation down to near-dead battery levels while monitoring nominal 1.6V–5.5V rails |
| Threshold Voltage (VTH−) | 1.600V (typ), ±2.5% over -40°C to +125°C - ensures accurate brownout detection across automotive/industrial temperature range |
| Hysteresis | 5% (VTH+ = VTH− × 1.05) - eliminates false resets during marginal supply recovery |
| Supply Current (ICC) | 1.0µA (typ) at 3.6V - enables multi-year battery life in always-on monitoring applications |
| Propagation Delay | 17µs (VCC falling at 10mV/µs) - provides fast response to supply collapse without excessive sensitivity to noise |
| Output Type | Push-pull, active-low - drives logic inputs directly without pull-up resistor; sinks ≥1mA at 0.3V |
| Operating Temperature | -40°C to +125°C - qualified for under-hood, industrial, and medical portable use |
Pinout & Package
SOT23-3 package: 1.45mm × 1.25mm × 1.1mm body, 0.95mm pitch, thermally enhanced pad optional. RoHS-compliant lead-free construction (denoted by "+T").
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Active-low push-pull output - asserts low on VCC < 1.6V; releases high only after VCC > 1.68V; drives CMOS/TTL loads directly |
| 2 | GND | Ground reference - must be connected to system ground plane; serves as return path for output sink current |
| 3 | VCC | Supply input and monitored voltage - powers internal circuitry and provides the sensed rail; no separate sense pin required |
Key Features
| Feature | Design Value |
|---|---|
| No external components required | Internal precision bandgap, trimmed resistors, and hysteresis eliminate calibration parts and reduce BOM count |
| Ultra-low 1.0µA supply current | Enables continuous monitoring in coin-cell-powered devices for >10 years at 1.6V threshold |
| ±2.5% threshold accuracy over full temp range | Guarantees reliable reset assertion across extreme environments without derating or guard-banding |
| 17µs propagation delay | Fast enough to protect µP before undervoltage lockout triggers, yet immune to sub-10µs supply glitches |
| 5% internal hysteresis | Prevents oscillatory reset behavior during slow power-up/power-down sequences in DC/DC converter outputs |
Applications
| Battery-Powered Medical Sensors | Industrial IoT Edge Node |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell, requiring undervoltage detection before sensor calibration fails. IC Role / Device Role / Timing Role: Voltage detector asserting reset to halt MCU execution when battery drops below 1.6V, preventing corrupted ADC readings. Use Value: 1.0µA quiescent current extends battery life beyond 24 months; ±2.5% threshold ensures consistent shutdown across operating temperature. |
Use Scenario: Wireless vibration sensor node deployed in factory machinery, powered by Li-ion with intermittent solar charging. IC Role / Device Role / Timing Role: Brownout supervisor triggering controlled MCU shutdown and EEPROM save before VCC falls below safe operating level. Use Value: 17µs response time captures rapid battery sag during motor startup; SOT23-3 footprint minimizes PCB area in compact enclosure. |
| Portable Diagnostic Handheld | Automotive Cabin Controller |
Use Scenario: Handheld ultrasound probe with dual LiPo cells, needing precise 1.6V cutoff to preserve charge for emergency boot sequence. IC Role / Device Role / Timing Role: Primary voltage monitor enabling graceful firmware suspend prior to deep discharge. Use Value: Factory-trimmed 1.6V threshold eliminates post-production calibration; -40°C to +125°C rating covers storage and operational extremes. |
Use Scenario: In-cabin infotainment control module powered from vehicle 12V rail via LDO, subject to load-dump and cold-crank transients. IC Role / Device Role / Timing Role: Reset supervisor ensuring µP remains held in reset during cranking-induced dips below 1.6V. Use Value: Immunity to ≤15µs transients prevents spurious resets; push-pull output drives automotive-grade reset input without external pull-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB16DBZR | 1.6V threshold, 0.5µA ICC, SOT23-3, but only ±3% accuracy over -40°C to +85°C | Limited temperature range reduces suitability for under-hood or industrial deployment | Select when cost sensitivity outweighs extended temperature performance and ultra-low glitch immunity |
| TPS3801K16DBVR | 1.6V threshold, 2.5µA ICC, SOT23-3, ±1.5% accuracy, but no guaranteed hysteresis specification | Higher supply current reduces battery life; lack of specified hysteresis requires external design margining | Choose if tighter initial accuracy is prioritized over long-term stability and transient robustness |
Compared with TLV803EB16DBZR and TPS3801K16DBVR, the MAX6461UR16+T delivers superior thermal stability (±2.5% to +125°C), lower effective power consumption in high-temp operation, and guaranteed 5% hysteresis - making it the preferred choice for mission-critical portable and automotive applications where reset reliability cannot be compromised.
Availability
MAX6461UR16+T is available at Aetrix Electronics and suitable for battery-powered medical devices, industrial IoT edge nodes, portable diagnostic tools, and automotive cabin controllers requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6461UR16+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 low-power, high-reliability solutions for demanding environments.
The MAX6461–MAX6466 family was engineered specifically for ultra-low-power voltage monitoring in space- and energy-constrained portable electronics, delivering factory-trimmed thresholds, integrated hysteresis, and guaranteed operation across extended temperature ranges.
FAQ
What is the exact threshold voltage of MAX6461UR16+T and how is it specified?
The MAX6461UR16+T has a factory-trimmed lower threshold voltage (VTH−) of 1.600V (typical) with ±2.5% tolerance over -40°C to +125°C, corresponding to suffix "16". Its upper threshold (VTH+) is 1.680V (1.600V × 1.05), providing 5% hysteresis. These values are guaranteed per Table 1a and Table 1b in the official datasheet, not derived from generic family data.
Does MAX6461UR16+T require any external components to function?
No, the MAX6461UR16+T operates autonomously with no external components required. Its internal precision bandgap reference, comparator, trimmed resistor network, and hysteresis circuit are fully integrated. The SOT23-3 pinout (VCC, GND, OUT) enables direct connection to the monitored rail and load without pull-up resistors or calibration parts.
What is the supply current of MAX6461UR16+T across temperature and voltage?
The MAX6461UR16+T draws 1.0µA typical supply current at 3.6V and +25°C. Over -40°C to +125°C, ICC remains ≤3.5µA at 5.0V (per Electrical Characteristics table), confirming ultra-low power operation across full industrial temperature range - critical for multi-year battery life in portable applications.
How does the hysteresis of MAX6461UR16+T prevent false resets?
The MAX6461UR16+T incorporates internal 5% hysteresis (VTH+ = VTH− × 1.05), meaning output asserts low at 1.600V but only releases high after VCC rises to 1.680V. This 80mV window eliminates chattering during slow or noisy supply recovery, ensuring single, clean reset assertion - verified in Typical Operating Characteristics Figure toc08.
Is MAX6461UR16+T compatible with other packages in the MAX6461–MAX6466 family?
Yes, the MAX6461UR16+T uses the SOT23-3 package, which shares identical pinout (VCC, GND, OUT) and footprint with MAX6461XR16-T (SC70-3) and MAX6461UK16-T (SOT23-5, pins 3/2/1). While SC70-3 and SOT23-5 differ mechanically, all three variants maintain identical electrical behavior and timing for the same suffix, enabling layout reuse across form factors.
MAX6461UR16+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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.6V
- Output:
- Push-Pull, Push-Pull
- Reset:
- Active Low
- Reset Timeout:
- 14µs Typical Propagation Delay
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6461UR16+T FAQ
1.How can I place an order for MAX6461UR16+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6461UR16+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 MAX6461UR16+T reliable?
The price and inventory of MAX6461UR16+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6461UR16+T is usually 5 days.
3.What payment methods are accepted for MAX6461UR16+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6461UR16+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6461UR16+T?
MAX6461UR16+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6461UR16+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 MAX6461UR16+T?
For technical support, including MAX6461UR16+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6461UR16+T requirements.
6.How does Aetrix verify that MAX6461UR16+T is sourced from the original manufacturer or authorized distributors?
All MAX6461UR16+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 MAX6461UR16+T meets industry standards.
7.What is the process for return or replacement of MAX6461UR16+T?
All MAX6461UR16+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6461UR16+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 MAX6461UR16+T part is unused and in its original packaging.
Return procedure for MAX6461UR16+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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