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Analog Devices Inc./Maxim Integrated MAX6461XR16+T
- Part No.:
- MAX6461XR16+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6461XR16+T.pdf
- Description:
- IC VOLT DETECTOR LP SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,176
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Product details
Overview
MAX6461XR16+T from Maxim Integrated is an ultra-low-power voltage detector IC designed for precision supply monitoring in battery-powered systems. It features a 1.6V nominal trip threshold (VTH− = 1.600V typ), ±2.5% threshold accuracy over −40°C to +125°C, 1.0µA supply current at 3.6V, and 17µs propagation delay. It operates in SC70-3 package and is used for reliable power-on reset and brownout detection in portable medical devices and cordless phones.
For engineers reviewing the MAX6461XR16+T datasheet, MAX6461XR16+T pinout, MAX6461XR16+T application, or MAX6461XR16+T equivalent, key selection criteria include its factory-trimmed 1.6V detection threshold, internal 5% hysteresis (VTH+ = 1.672V typ), push-pull active-low output stage, −40°C to +125°C operating range, and lead-free SC70-3 packaging.
Technical Context
The MAX6461XR16+T implements a precision bandgap reference and comparator-based detection architecture with internally trimmed resistor networks. Its trip thresholds are factory-set to VTH− = 1.600V and VTH+ = 1.672V (typ), delivering fixed 5% hysteresis without external components.
It uses a single-supply topology where VCC serves as both power source and monitored voltage input. The device asserts output low when VCC falls below VTH− and releases only after VCC rises above VTH+, ensuring noise immunity against short transients up to ~15µs at 100mV overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Voltage Threshold (VTH−) | 1.600V typical at +25°C; minimum 1.560V over −40°C to +125°C - sets precise brownout detection point for 1.6V nominal rails |
| Threshold Hysteresis | 5% (VTH+ = VTH− × 1.05) - prevents output chatter during slow or noisy supply ramps |
| Supply Current (ICC) | 1.0µA typical at 3.6V, −40°C to +125°C - enables multi-year battery life in always-on monitoring |
| Propagation Delay | 17µs typical (VCC falling at 10mV/µs) - ensures fast response to critical undervoltage events |
| Operating Temperature | −40°C to +125°C - supports automotive under-hood, industrial, and extended-range portable use |
| Output Type | Push-pull, active-low - drives logic inputs directly without pull-up resistors; sinks ≥1mA at 0.3V VOL |
| Package | SC70-3 - 1.25mm × 2.0mm footprint ideal for space-constrained PCBs in handheld devices |
Pinout & Package
MAX6461XR16+T is housed in a 3-pin SC70-3 package with exposed pad (not electrically connected). Pin 1 is OUT (active-low push-pull), Pin 2 is GND, and Pin 3 is VCC. All pins are rated for −0.3V to +7V absolute max, with VCC serving as both supply and monitored voltage input.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Active-low push-pull output | Asserts low when VCC < VTH−; releases high when VCC > VTH+; drives CMOS/TTL loads directly |
| 2 (GND) | Ground reference | Return path for internal bandgap, comparator, and output stage; must be low-impedance |
| 3 (VCC) | Supply and monitored input | Single-node connection for both power delivery and voltage sensing; no external divider required |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 1.0µA typical at 3.6V - reduces quiescent power in always-on supervision circuits |
| Factory-trimmed threshold | 1.600V ±2.5% over full temperature range - eliminates calibration effort and external resistors |
| Internal hysteresis | 5% (VTH+ = VTH− × 1.05) - suppresses false triggering on ripple or transient noise |
| No external components | Self-contained detection circuit - reduces BOM count, board area, and qualification effort |
| Wide VCC range | 1.2V to 6.0V operation - supports Li-ion, NiMH, alkaline, and regulated 3.3V/5V rails |
Applications
| Precision Battery Monitoring | Load Switching / Power Sequencing |
|---|---|
Use Scenario: Real-time monitoring of single-cell Li+ or alkaline battery voltage in portable ECG monitors. IC Role / Device Role: Voltage detector asserting reset signal when battery drops below 1.6V to prevent data corruption. Use Value: 1.0µA supply current extends battery service life beyond 5 years in sleep mode; ±2.5% threshold accuracy ensures consistent low-voltage cutoff across temperature. |
Use Scenario: Enabling controlled power-up sequence for dual-rail FPGA subsystems using discrete MOSFETs. IC Role / Device Role: Supervisory trigger for gate driver enable, ensuring core rail stabilizes before I/O rail activation. Use Value: 17µs propagation delay guarantees timely assertion of enable signals; SC70-3 footprint minimizes layout impact near power switches. |
| Noise-Immune µP Reset | Portable Medical Devices |
Use Scenario: Generating clean power-on reset for ARM Cortex-M0 microcontrollers in hearing aids exposed to ESD and RF noise. IC Role / Device Role: Brownout detector providing glitch-immune reset pulse with built-in hysteresis. Use Value: Internal 5% hysteresis and transient immunity up to 15µs prevent spurious resets; push-pull output eliminates pull-up resistor parasitics. |
Use Scenario: Supply monitoring in handheld glucose meters with coin-cell batteries and LCD displays. IC Role / Device Role: Low-voltage warning and system shutdown initiator when battery reaches end-of-life. Use Value: Factory-set 1.6V threshold matches common alkaline discharge curve; −40°C to +125°C rating covers storage and clinical environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage detector applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV803EB16DBVR | 1.6V threshold, 0.5µA ICC, SOT-23-3, but only ±3% accuracy over −40°C to +85°C | Limited temperature range; lower supply current but reduced accuracy stability at extremes | Prefer MAX6461XR16+T for designs requiring full −40°C to +125°C validation or tighter threshold tolerance |
| APX803S-16SA-7 | 1.6V threshold, 1.2µA ICC, SOT-23-3, ±2.5% accuracy, but no guaranteed hysteresis spec | Hysteresis not characterized over temperature; may require external RC network for noise immunity | MAX6461XR16+T provides guaranteed 5% hysteresis without design overhead - critical for noisy industrial environments |
Compared with TLV803EB16DBVR and APX803S-16SA-7, the MAX6461XR16+T delivers superior thermal stability of threshold accuracy, fully specified hysteresis, and identical SC70-3 footprint - making it optimal for high-reliability portable and medical applications where long-term parametric consistency is mandatory.
Availability
MAX6461XR16+T is available at Aetrix Electronics and suitable for precision battery monitoring, load switching/power sequencing, and noise-immune µP reset applications requiring stable component supply across automotive, industrial, and portable medical product lifecycles.
Supply support for MAX6461XR16+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 demanding industrial, automotive, and medical applications.
The MAX6461–MAX6466 family was designed specifically for ultra-low-power, high-accuracy voltage supervision in space- and energy-constrained portable electronics - eliminating external components while guaranteeing performance across extreme temperatures.
FAQ
What is the exact voltage threshold of MAX6461XR16+T?
The MAX6461XR16+T has a factory-trimmed lower trip threshold (VTH−) of 1.600V typical at +25°C, with guaranteed range of 1.560V to 1.640V over −40°C to +125°C. Its upper threshold (VTH+) is 1.672V typical, yielding 5% hysteresis. These values are confirmed in Table 1a and Table 1b of the official datasheet.
Does MAX6461XR16+T require external components to operate?
No. The MAX6461XR16+T requires zero external components: its precision bandgap reference, comparator, and trimmed resistor network are fully integrated. VCC connects directly to the monitored supply, and the push-pull active-low output drives logic inputs without pull-up resistors - simplifying design and reducing BOM cost.
What is the operating temperature range for MAX6461XR16+T?
The MAX6461XR16+T is fully specified from −40°C to +125°C. Electrical characteristics including threshold accuracy (±2.5%), supply current (1.0µA typ), and propagation delay (17µs) are guaranteed across this full industrial/automotive range - validated per the Absolute Maximum Ratings and Electrical Characteristics tables.
How does the hysteresis function in MAX6461XR16+T?
The MAX6461XR16+T incorporates internal 5% hysteresis: output remains asserted until VCC rises above VTH+ = VTH− × 1.05. For the XR16 variant, this means release occurs only after VCC exceeds ~1.672V (typ), preventing oscillation during slow or noisy supply recovery - a key feature confirmed in the Functional Diagram and Electrical Characteristics.
Is MAX6461XR16+T pin-compatible with other members of the MAX6461–MAX6466 family?
Yes - all SC70-3 variants in the MAX6461–MAX6466 family share identical pinout: Pin 1 = OUT, Pin 2 = GND, Pin 3 = VCC. The MAX6461XR16+T is functionally interchangeable with other XR-suffix SC70-3 parts (e.g., MAX6461XR22+T) at the board level; only the threshold voltage differs between suffixes.
MAX6461XR16+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:
- 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:
- SC-70-3
MAX6461XR16+T FAQ
1.How can I place an order for MAX6461XR16+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6461XR16+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 MAX6461XR16+T reliable?
The price and inventory of MAX6461XR16+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6461XR16+T is usually 5 days.
3.What payment methods are accepted for MAX6461XR16+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6461XR16+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6461XR16+T?
MAX6461XR16+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6461XR16+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 MAX6461XR16+T?
For technical support, including MAX6461XR16+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6461XR16+T requirements.
6.How does Aetrix verify that MAX6461XR16+T is sourced from the original manufacturer or authorized distributors?
All MAX6461XR16+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 MAX6461XR16+T meets industry standards.
7.What is the process for return or replacement of MAX6461XR16+T?
All MAX6461XR16+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6461XR16+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 MAX6461XR16+T part is unused and in its original packaging.
Return procedure for MAX6461XR16+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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