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Analog Devices Inc./Maxim Integrated MAX6461XR22+T
- Part No.:
- MAX6461XR22+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6461XR22+T.pdf
- Description:
- IC VOLT DETECTOR LP SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,782
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Product details
Overview
MAX6461XR22+T from Maxim Integrated is a precision ultra-low-power voltage detector IC designed for battery and power-supply monitoring in space-constrained portable systems. It features a factory-set 2.200V lower trip threshold (VTH−), ±2.5% threshold accuracy over −40°C to +125°C, 1.0µA supply current at 3.6V, and 17µs propagation delay. It is used in load switching and noise-immune µP reset circuits where minimal quiescent power and stable threshold behavior are critical.
For engineers reviewing the MAX6461XR22+T datasheet, MAX6461XR22+T pinout, MAX6461XR22+T application, or MAX6461XR22+T equivalent, key selection considerations include its SC70-3 package, active-low push-pull output, 2.2V detection point, 5% internal hysteresis, and guaranteed operation across automotive-grade temperature range without external components.
Technical Context
The MAX6461XR22+T implements a precision bandgap reference and comparator with internally trimmed resistor networks to set VTH− = 2.200V (±2.5%) and VTH+ = 2.310V (VTH− × 1.05), delivering fixed 5% hysteresis. Its architecture eliminates need for external calibration or trimming components.
It operates as a dedicated voltage detector-not a supervisory circuit with timeout-so output assertion follows only VCC crossing VTH−/VTH+ thresholds, with no minimum reset pulse width. Propagation delay is specified at 17µs (VCC slew rate 10mV/µs) and remains stable 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 - sets precise undervoltage detection point for 2.2V nominal rails |
| Supply Current (ICC) | 1.0µA typical at 3.6V - enables multi-year battery life in always-on monitoring applications |
| Propagation Delay | 17µs at 10mV/µs slew rate - ensures fast, deterministic response to supply droop |
| Threshold Hysteresis | 5% (VTH+ = VTH− × 1.05) - prevents output chatter during slow or noisy VCC transitions |
| Operating Temperature | −40°C to +125°C - supports under-hood, industrial, and extended-range portable use |
| Output Type | Active-low push-pull - drives logic directly without pull-up resistor; sinks ≥1mA at 0.3V VOL |
| Package | SC70-3 - 1.25mm × 1.25mm footprint ideal for wearables and compact medical devices |
Pinout & Package
MAX6461XR22+T is housed in a 3-pin SC70-3 package (1.25mm × 1.25mm, 0.5mm pitch), fully specified for −40°C to +125°C operation. The package is lead-free, RoHS-compliant, and supplied in tape-and-reel format.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT | Active-low push-pull output - asserts low when VCC < VTH− (2.2V); releases high when VCC > VTH+ (2.31V); no external pull-up required |
| 2 | GND | Ground reference for internal bandgap and comparator - must be connected to system ground plane for accuracy |
| 3 | VCC | Supply input and monitored voltage rail - powers device and serves as detection source; operates from 1.2V to 6.0V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low 1.0µA supply current | Enables >10-year battery life in coin-cell–powered IoT sensors and medical patches |
| Factory-trimmed 2.200V threshold | Eliminates production calibration; guarantees ±2.5% accuracy across full temperature range |
| Internal 5% hysteresis | Prevents false triggering on ripple or slow-rising supplies without external RC network |
| No external components required | Reduces BOM count, PCB area, and qualification effort in safety-critical portable designs |
| SC70-3 package | Supports high-density layouts in hearing aids, glucose monitors, and smart pens |
Applications
| Portable Medical Sensors | Battery-Powered IoT Endpoints |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell, requiring reliable low-voltage shutdown before sensor accuracy degrades. IC Role / Device Role / Timing Role: Voltage detector asserting MCU reset when battery drops below 2.2V, preventing corrupted readings or unsafe operation. Use Value: 1.0µA quiescent current extends usable battery life by >30% versus comparable 3µA detectors; ±2.5% threshold ensures consistent shutdown across operating temperature. |
Use Scenario: LPWAN node in agricultural sensor network, sleeping >99% of time and waking hourly to transmit soil moisture data. IC Role / Device Role / Timing Role: Undervoltage guard that disables RF transmission and triggers deep-sleep entry when supply falls below 2.2V. Use Value: 17µs propagation delay guarantees immediate action before brownout-induced MCU lockup; SC70-3 footprint saves 0.8mm² vs. SOT23-3. |
| Industrial Handheld Scanners | Wearable Health Trackers |
Use Scenario: Rugged barcode scanner using Li-ion pack, needing robust reset signaling during hot-swap battery changes. IC Role / Device Role / Timing Role: Precision detector generating clean active-low reset pulse to clear MCU state when VCC dips transiently below 2.2V. Use Value: Immunity to short transients (<15µs at 200mV overdrive) prevents spurious resets; −40°C to +125°C rating covers warehouse-to-outdoor deployment. |
Use Scenario: Optical heart-rate monitor worn 24/7, where battery voltage drifts gradually during multi-day charge cycles. IC Role / Device Role / Timing Role: Threshold monitor feeding interrupt to ARM Cortex-M0+ to initiate graceful shutdown before voltage collapse. Use Value: 5% internal hysteresis avoids oscillation during slow discharge; 2.2V trip point aligns with LiPo 20% SoC for optimal runtime/utilization balance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB22DBZR | 2.2V threshold, 0.5µA ICC, SOT23-3, but ±3% accuracy and no guaranteed hysteresis spec | Limited to commercial temp range (−40°C to +85°C); unsuitable for under-hood or extended industrial use | Choose TLV803EB22DBZR only if sub-1µA current is mandatory and temperature range is ≤+85°C |
| APX803S-22SA-7 | 2.2V threshold, 1.2µA ICC, SOT23-3, ±2% accuracy, but requires external capacitor for noise immunity | Higher BOM cost and layout area due to required 100nF bypass; less robust against ESD-induced glitches | Choose APX803S-22SA-7 only if tighter ±2% threshold tolerance outweighs added component count and reliability risk |
Compared with TLV803EB22DBZR and APX803S-22SA-7, MAX6461XR22+T delivers superior thermal stability (±2.5% to +125°C), integrated hysteresis, and zero external components-making it the preferred choice for automotive-qualified, battery-sensitive, and miniaturized designs where long-term reliability is non-negotiable.
Availability
MAX6461XR22+T is available at Aetrix Electronics and suitable for portable medical devices, battery-powered IoT endpoints, and industrial handheld scanners requiring stable component supply, long-lifecycle support, and guaranteed lead-free compliance.
Supply support for MAX6461XR22+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, automotive, and communications markets.
The MAX6461–MAX6466 family was engineered for ultra-low-power voltage supervision in battery-critical portable equipment, emphasizing precision thresholding, minimal current draw, and robust transient immunity without external components.
FAQ
What is the exact voltage threshold of MAX6461XR22+T?
The MAX6461XR22+T has a factory-set lower trip threshold (VTH−) of 2.200V with ±2.5% accuracy over −40°C to +125°C. Its upper threshold (VTH+) is 2.310V (2.200V × 1.05), providing fixed 5% hysteresis. These values are confirmed in Table 1a and Table 1b of the official MAX6461–MAX6466 datasheet, revision 2.
Does MAX6461XR22+T include a reset timeout function?
No, MAX6461XR22+T does not include a reset timeout function. It is a pure voltage detector (not a µP supervisory circuit), so its output asserts low immediately when VCC falls below 2.200V and releases high as soon as VCC rises above 2.310V. Timeout functionality is exclusive to MAX6464–MAX6466 variants; MAX6461XR22+T belongs to the MAX6461 series.
What package type and dimensions does MAX6461XR22+T use?
MAX6461XR22+T uses the SC70-3 package: 1.25mm × 1.25mm body size, 0.5mm pin pitch, and 0.95mm maximum height. Pin 1 is OUT, Pin 2 is GND, and Pin 3 is VCC. This package is lead-free, RoHS-compliant, and supplied in tape-and-reel format per ordering information.
Can MAX6461XR22+T operate down to 1.2V supply?
Yes, MAX6461XR22+T is fully specified to operate with VCC as low as 1.2V, per Absolute Maximum Ratings and Electrical Characteristics tables. However, output sinking capability degrades below 1.0V; for valid logic-level operation down to 0V, a pull-down resistor is recommended per Applications Information section.
Is MAX6461XR22+T pin-compatible with other MAX6461 variants?
Yes, all MAX6461XRxx+T variants (e.g., MAX6461XR16+T, MAX6461XR29+T) share identical SC70-3 pinout and package. Only the threshold voltage differs; electrical characteristics, timing, and interface behavior remain consistent across the XR-series, enabling drop-in replacement within the same threshold family.
MAX6461XR22+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.2V
- 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:
- SC-70-3
MAX6461XR22+T FAQ
1.How can I place an order for MAX6461XR22+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6461XR22+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 MAX6461XR22+T reliable?
The price and inventory of MAX6461XR22+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6461XR22+T is usually 5 days.
3.What payment methods are accepted for MAX6461XR22+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6461XR22+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6461XR22+T?
MAX6461XR22+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6461XR22+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 MAX6461XR22+T?
For technical support, including MAX6461XR22+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6461XR22+T requirements.
6.How does Aetrix verify that MAX6461XR22+T is sourced from the original manufacturer or authorized distributors?
All MAX6461XR22+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 MAX6461XR22+T meets industry standards.
7.What is the process for return or replacement of MAX6461XR22+T?
All MAX6461XR22+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6461XR22+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 MAX6461XR22+T part is unused and in its original packaging.
Return procedure for MAX6461XR22+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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