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Analog Devices Inc./Maxim Integrated MAX6464UR27+T
- Part No.:
- MAX6464UR27+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6464UR27+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,647
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Product details
Overview
MAX6464UR27+T from Maxim Integrated is a micropower supervisory circuit with active-low push-pull output, 2.7V lower trip threshold (VTH−), ±2.5% threshold accuracy over −40°C to +125°C, 150ms minimum reset timeout, and 1.0µA supply current at 3.6V - used for reliable power-on reset generation in battery-powered medical sensors and portable instrumentation.
For engineers reviewing the MAX6464UR27+T datasheet, MAX6464UR27+T pinout, MAX6464UR27+T application, or MAX6464UR27+T equivalent, key selection criteria include guaranteed 150ms reset assertion after VCC recovery, internal 5% hysteresis (VTH+ = VTH− × 1.05), SC70-3 package compatibility, and immunity to sub-20µs voltage transients at 2.7V threshold overdrive.
Technical Context
The MAX6464UR27+T implements a precision bandgap reference and comparator with internally trimmed resistor networks to set VTH− = 2.700V (±2.5%) and VTH+ = 2.835V. Its reset timeout logic ensures output remains asserted for ≥150ms after VCC exceeds VTH+, independent of input slew rate.
It features an active-low push-pull output stage capable of sinking 1.0mA at 0.3V (VCC ≥ 1.2V) and sourcing 1.5mA at 0.8×VCC (VCC ≥ 1.8V), eliminating need for external pull-up resistors while maintaining compatibility with 1.8V–5.5V logic interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold (VTH−) | 2.700V ±2.5% (−40°C to +125°C); precise brown-out detection at nominal 2.7V supply rails |
| Upper Threshold (VTH+) | 2.835V (VTH− × 1.05); provides 5% hysteresis to prevent chatter during slow-rising/falling VCC |
| Reset Timeout Period | 150ms minimum; guarantees microcontroller reset hold time meets ARM Cortex-M and PIC timing requirements |
| Supply Current | 1.0µA at 3.6V (−40°C to +125°C); enables >10-year battery life in coin-cell–powered devices |
| Operating Voltage Range | 1.2V to 6.0V; supports operation down to near-dead battery voltage while monitoring 2.7V rail |
| Output Type | Active-low push-pull; drives CMOS/TTL loads directly without external components or pull-ups |
| Propagation Delay | Not specified for MAX6464 series; timeout behavior dominates timing - no propagation delay dependency on VCC slew rate |
Pinout & Package
MAX6464UR27+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, Pin 2 is GND, and Pin 3 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OUT (Pin 1) | Active-low push-pull reset output | Asserts low when VCC < 2.7V; holds low ≥150ms after VCC > 2.835V; sinks 1.0mA @ 0.3V, sources 1.5mA @ 0.8×VCC |
| GND (Pin 2) | Ground reference | Return path for internal bandgap, comparator, and output stage; must be connected to system ground plane |
| VCC (Pin 3) | Supply and monitored voltage input | Provides operating power and serves as the sensed rail; valid from 1.2V to 6.0V; threshold accuracy guaranteed across full range |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 1.0µA at 3.6V ensures minimal battery drain in always-on monitoring applications |
| Factory-trimmed VTH− | 2.700V ±2.5% over −40°C to +125°C eliminates calibration overhead and external resistor networks |
| Guaranteed timeout | 150ms minimum reset pulse width satisfies JEDEC JESD78 and ARM reset timing compliance |
| Transient immunity | Immune to VCC glitches ≤18µs at 2.7V overdrive (per Typical Operating Characteristics Figure 4) |
| SC70-3 footprint | 2.0mm × 2.1mm body enables placement in wearables and implantable sensor modules |
Applications
| Portable Medical Sensors | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Continuous glucose monitor (CGM) with coin-cell battery and ultra-low-power MCU. IC Role / Device Role / Timing Role: Supervisory circuit asserting /RESET to hold MCU in reset until 2.7V rail stabilizes post-battery insertion or cold start. Use Value: 150ms guaranteed timeout prevents premature MCU execution before ADC reference settles; 1.0µA ICC extends 3V CR2032 life beyond 5 years. |
Use Scenario: Environmental data logger sampling temperature/humidity every 5 minutes using Li-SOCl₂ primary cell. IC Role / Device Role / Timing Role: Monitors main 3.6V supply and triggers clean system reset if voltage sags below 2.7V due to pulse load or low-temp impedance rise. Use Value: Internal 5% hysteresis avoids oscillatory reset during gradual battery depletion; SC70-3 footprint fits 8mm × 8mm PCB area budget. |
| Industrial Handheld Scanners | Low-Power IoT Edge Nodes |
Use Scenario: Rugged barcode scanner powered by removable 2-cell alkaline pack (2.4V–3.2V). IC Role / Device Role / Timing Role: Provides brown-out reset when battery voltage drops below 2.7V during high-current laser/decoder activation. Use Value: Push-pull output drives 3.3V FPGA configuration logic directly; no external pull-up saves BOM cost and board space. |
Use Scenario: NB-IoT node with u-blox SARA-N4 module, STM32L4 MCU, and supercap backup. IC Role / Device Role / Timing Role: Detects main 3.3V rail collapse and asserts reset to prevent flash corruption during power failover to supercap. Use Value: Immunity to 15µs transients eliminates false resets during RF transmission bursts; −40°C to +125°C rating supports outdoor deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3123E18DBVR | 2.93V fixed threshold, 200ms timeout, 1.6µA ICC, SOT-23-3 | Higher threshold unsuitable for 2.7V systems; longer timeout may delay wake-up | Select only if system requires 2.93V detection and can tolerate 50ms longer reset hold |
| STM6315RWX6F | 2.63V threshold, 140ms timeout, 2.5µA ICC, SOT-23-3 | Lower threshold risks premature reset during nominal 2.7V operation; higher ICC reduces battery life | Acceptable only if 70mV lower trip margin is acceptable and 1.5× supply current is tolerable |
Compared with TPS3123E18DBVR and STM6315RWX6F, MAX6464UR27+T uniquely delivers exact 2.700V detection with ±2.5% accuracy, 150ms deterministic timeout, and lowest ICC (1.0µA) in SC70-3 - making it optimal for long-life 2.7V battery systems where timing precision and power efficiency are co-critical.
Availability
MAX6464UR27+T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered data loggers, and industrial handheld scanners requiring stable component supply and long-term lifecycle support.
Supply support for MAX6464UR27+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 guaranteed reset timing, minimal quiescent current, and factory-trimmed thresholds - targeting portable healthcare, instrumentation, and energy-harvesting edge nodes.
FAQ
What is the exact reset threshold voltage of MAX6464UR27+T and how accurate is it over temperature?
The MAX6464UR27+T has a nominal lower trip threshold (VTH−) of 2.700V at +25°C, with guaranteed accuracy of ±2.5% across the full −40°C to +125°C operating range. This corresponds to a min/max range of 2.633V to 2.768V at temperature extremes, per Table 1a in the datasheet. The upper threshold (VTH+) is fixed at VTH− × 1.05 = 2.835V nominal.
Does MAX6464UR27+T require any external components for basic reset functionality?
No, MAX6464UR27+T requires zero external components for core reset operation. Its internal bandgap reference, trimmed resistor network, comparator, and push-pull output eliminate the need for external resistors, capacitors, or pull-up resistors. Only VCC, GND, and the /RESET net connection are needed - simplifying layout and reducing BOM count.
What is the minimum reset timeout period of MAX6464UR27+T and is it guaranteed across temperature?
The MAX6464UR27+T guarantees a minimum reset timeout period of 150ms after VCC rises above VTH+, with typical values up to 260ms and maximum up to 430ms (per Electrical Characteristics table). This timeout is fully specified and production-tested across −40°C to +125°C, ensuring reliable MCU initialization regardless of ambient conditions.
Can MAX6464UR27+T operate from a 1.8V supply while monitoring a 2.7V rail?
No - MAX6464UR27+T uses the same pin (VCC) for both power supply and monitored voltage input. It cannot monitor a 2.7V rail while being powered from 1.8V. To supervise a 2.7V rail, VCC must be connected to that 2.7V source. The device operates from 1.2V to 6.0V, so it functions correctly when VCC = 2.7V.
What package type and dimensions does MAX6464UR27+T use, and is it RoHS-compliant?
MAX6464UR27+T uses the SC70-3 package: 2.0mm × 2.1mm body size, 0.9mm max height, 0.65mm lead pitch. It is supplied in lead-free (Pb-free) form, as indicated by the "+T" suffix per Maxim's ordering guide - fully compliant with RoHS Directive 2011/65/EU and JEDEC JS-001 ESD standards.
MAX6464UR27+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:
- 2.7V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 150ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MAX6464UR27+T FAQ
1.How can I place an order for MAX6464UR27+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6464UR27+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 MAX6464UR27+T reliable?
The price and inventory of MAX6464UR27+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6464UR27+T is usually 5 days.
3.What payment methods are accepted for MAX6464UR27+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6464UR27+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6464UR27+T?
MAX6464UR27+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6464UR27+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 MAX6464UR27+T?
For technical support, including MAX6464UR27+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6464UR27+T requirements.
6.How does Aetrix verify that MAX6464UR27+T is sourced from the original manufacturer or authorized distributors?
All MAX6464UR27+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 MAX6464UR27+T meets industry standards.
7.What is the process for return or replacement of MAX6464UR27+T?
All MAX6464UR27+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6464UR27+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 MAX6464UR27+T part is unused and in its original packaging.
Return procedure for MAX6464UR27+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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