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Analog Devices Inc./Maxim Integrated MAX6464XR29+T
- Part No.:
- MAX6464XR29+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6464XR29+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,133
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Product details
Overview
MAX6464XR29+T from Maxim Integrated is a micropower supervisory circuit with 2.9V lower trip threshold (VTH−), 150ms minimum reset timeout, and push-pull active-low output in SC70-3 package. It monitors VCC supply voltage, asserts reset when VCC falls below 2.828V (min, −40°C to +125°C), holds reset for ≥150ms after VCC rises above 2.955V (min), and draws only 1.0µA supply current at 3.6V - ideal for battery-backed microcontroller reset in portable medical devices.
For engineers reviewing the MAX6464XR29+T datasheet, MAX6464XR29+T pinout, MAX6464XR29+T application, or MAX6464XR29+T equivalent, key selection criteria include guaranteed 150ms reset timeout over −40°C to +125°C, ±2.5% threshold accuracy, internal 5% hysteresis (VTH+ = VTH− × 1.05), immunity to short VCC transients, and compatibility with low-voltage systems down to 1.6V nominal supply.
Technical Context
The MAX6464XR29+T implements a precision bandgap reference and comparator with internally trimmed resistor networks to set fixed 2.9V (VTH−) detection. Its reset assertion logic includes built-in timing: output remains asserted for ≥150ms after VCC exceeds VTH+, independent of VCC slew rate or noise.
Hysteresis is fixed at 5% (VTH+ = VTH− × 1.05), eliminating external components while preventing chatter near threshold. The device operates across full industrial temperature range (−40°C to +125°C) with no external capacitors required for timeout functionality.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold (VTH−) | 2.900V typical at +25°C; 2.828V min / 2.973V max over −40°C to +125°C - ensures reliable brownout detection across temperature |
| Reset Timeout Period | 150ms minimum, 260ms typical, 430ms maximum - guarantees sufficient processor hold time during power recovery |
| Supply Current (ICC) | 1.0µA typical at 3.6V, ≤3.5µA max at +125°C - enables multi-year operation on coin-cell batteries |
| Threshold Hysteresis | Fixed 5% (VTH+ = VTH− × 1.05) - prevents false resets during slow or noisy VCC recovery |
| Output Type | Push-pull, active-low - drives CMOS/TTL loads directly without pull-up resistor |
| Operating Voltage Range | 1.2V to 6.0V - supports monitoring of 1.6V–5.5V nominal supplies with margin |
| Temperature Range | −40°C to +125°C - qualified for automotive under-hood and industrial embedded use |
Pinout & Package
MAX6464XR29+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 (active-low push-pull), Pin 2 is GND, and Pin 3 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Reset output | Active-low push-pull driver; sinks ≥1mA at VCC ≥ 1.2V; asserts low when VCC < VTH− and holds low ≥150ms after VCC > VTH+ |
| 2 (GND) | Ground reference | Primary return path for internal bandgap and comparator; must be connected to system ground plane for accuracy |
| 3 (VCC) | Supply and monitored input | Single pin serves as both power source and voltage monitor input; accepts 1.2V–6.0V; no external decoupling required |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 1.0µA typical at 3.6V - extends battery life in always-on monitoring applications |
| Factory-trimmed 2.9V threshold | ±2.5% accuracy over −40°C to +125°C - eliminates calibration and reduces BOM count |
| Integrated 150ms timeout | No external capacitor needed - simplifies layout and improves reliability vs RC-based solutions |
| 5% internal hysteresis | VTH+ = VTH− × 1.05 - suppresses noise-induced false resets without external components |
| Transient immunity | Rejects VCC glitches ≤15µs at 100mV overdrive - maintains reset integrity in electrically noisy environments |
Applications
| Portable Medical Sensors | Battery-Powered IoT Nodes |
|---|---|
|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell, requiring reliable MCU reset during battery voltage sag. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low reset to ARM Cortex-M0+ during VCC drop below 2.9V, holding reset ≥150ms for safe firmware restart. Use Value: 1.0µA quiescent current enables >5-year battery life; ±2.5% threshold stability ensures consistent detection across body-temperature variations. |
Use Scenario: LoRaWAN end-node in remote asset tracker, operating intermittently on Li-SOCl₂ battery with wide temperature exposure. IC Role / Device Role / Timing Role: Voltage supervisor monitoring 3.3V rail, triggering hardware reset when cold-start voltage dips below 2.9V during winter deployment. Use Value: −40°C to +125°C qualification guarantees operation in uncontrolled outdoor enclosures; SC70-3 footprint saves PCB area in compact modules. |
| Industrial PLC I/O Modules | Automotive Body Control Units |
|
Use Scenario: DIN-rail mounted sensor interface module exposed to 48V supply transients and ambient temperature swings. IC Role / Device Role / Timing Role: Reset supervisor for dual-core microcontroller, asserting reset on 24V DC-DC output sag and maintaining hold time through ripple. Use Value: Immunity to ≤15µs transients prevents spurious resets during relay switching; 5% hysteresis avoids oscillation near brownout edge. |
Use Scenario: Door module controlling window lift and mirror adjustment, powered from vehicle battery with load-dump and cold-crank events. IC Role / Device Role / Timing Role: Supervisory IC monitoring 5V LDO output, generating clean reset pulse after ignition-on voltage stabilization. Use Value: Guaranteed 150ms timeout meets ISO 16750-2 cold-crank recovery requirements; 2.9V threshold aligns with 3.3V MCU VDDIO brownout level. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G12DBVR | 2.93V threshold, 200ms timeout, 1.1µA ICC, SOT23-6 package | Requires external pull-up for open-drain variant; longer timeout may delay system wake-up | Preferred where longer reset hold time is acceptable and SOT23-6 board space is available |
| ADM6315-29DARTZ-RL | 2.93V threshold, 140ms timeout, 2.5µA ICC, SOT23-3 package | Lower temperature range (−40°C to +105°C); tighter 140ms timeout may not meet all automotive specs | Valid alternative for cost-sensitive industrial designs where extended temperature is not required |
Compared with MAX6464XR29+T, TPS3808G12DBVR offers longer timeout but larger footprint and higher current; ADM6315-29DARTZ-RL matches SC70/SOT23-3 size but trades off temperature range and timeout duration - MAX6464XR29+T uniquely balances ultra-low ICC, full automotive temp, and precise 150ms timing in SC70-3.
Availability
MAX6464XR29+T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered IoT nodes, and industrial PLC I/O modules requiring stable component supply with long-term lifecycle support.
Supply support for MAX6464XR29+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 high-reliability, low-power solutions.
The MAX6461–MAX6466 family was engineered specifically for ultra-low-power voltage supervision in space- and energy-constrained systems - delivering factory-trimmed thresholds, integrated timing, and robust transient immunity without external components.
FAQ
What is the exact reset threshold voltage of MAX6464XR29+T over temperature?
The MAX6464XR29+T has a nominal lower trip threshold (VTH−) of 2.900V at +25°C, with guaranteed range of 2.828V (min) to 2.973V (max) across −40°C to +125°C. Its upper trip point (VTH+) is 3.031V typical, ranging from 2.955V to 3.106V over the same temperature span - both specified with ±2.5% accuracy relative to nominal.
Does MAX6464XR29+T require an external capacitor for its reset timeout function?
No, MAX6464XR29+T does not require an external capacitor. Its 150ms minimum reset timeout is fully integrated using on-chip timing circuitry. This eliminates component count, layout area, and tolerance-related timing drift - unlike RC-based supervisors that depend on external R and C values.
What output configuration does MAX6464XR29+T use, and how does it interface with a 3.3V microcontroller?
MAX6464XR29+T features a push-pull, active-low output. When asserted, it drives OUT low to <0.3V (at ISINK = 1.0mA, VCC ≥ 1.2V); when deasserted, it drives OUT high to ≥0.8 × VCC. For a 3.3V MCU, this provides TTL/CMOS-compatible levels without external pull-up resistors - simplifying interface and reducing standby current.
How does MAX6464XR29+T handle short voltage transients on the VCC line?
MAX6464XR29+T is designed to ignore short VCC transients: at 100mV overdrive (i.e., VCC = VTH− − 0.1V), it tolerates glitches up to ~15µs duration before asserting reset. This immunity is inherent to its internal comparator architecture and hysteresis design - no external filtering is needed for typical digital switching noise.
Is MAX6464XR29+T compatible with lead-free PCB assembly processes?
Yes, MAX6464XR29+T uses lead-free packaging - the "+T" suffix explicitly denotes RoHS-compliant, matte-tin lead finish. It is rated for standard reflow profiles including JEDEC J-STD-020 moisture sensitivity level 1 and peak solder temperatures up to +260°C, making it fully compatible with modern lead-free SMT assembly.
MAX6464XR29+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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.9V
- 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:
- SC-70-3
MAX6464XR29+T FAQ
1.How can I place an order for MAX6464XR29+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6464XR29+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 MAX6464XR29+T reliable?
The price and inventory of MAX6464XR29+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6464XR29+T is usually 5 days.
3.What payment methods are accepted for MAX6464XR29+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6464XR29+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6464XR29+T?
MAX6464XR29+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6464XR29+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 MAX6464XR29+T?
For technical support, including MAX6464XR29+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6464XR29+T requirements.
6.How does Aetrix verify that MAX6464XR29+T is sourced from the original manufacturer or authorized distributors?
All MAX6464XR29+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 MAX6464XR29+T meets industry standards.
7.What is the process for return or replacement of MAX6464XR29+T?
All MAX6464XR29+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6464XR29+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 MAX6464XR29+T part is unused and in its original packaging.
Return procedure for MAX6464XR29+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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