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Analog Devices Inc./Maxim Integrated MAX6464XR26+T
- Part No.:
- MAX6464XR26+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6464XR26+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,716
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Product details
Overview
MAX6464XR26+T from Maxim Integrated is a micropower supervisory circuit with 2.6V 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 during undervoltage conditions, and holds reset for ≥150ms after recovery-enabling reliable µP initialization in battery-powered medical sensors and portable instrumentation.
For engineers reviewing the MAX6464XR26+T datasheet, MAX6464XR26+T pinout, MAX6464XR26+T application, or MAX6464XR26+T equivalent, key selection criteria include guaranteed 150ms reset timeout, ±2.5% threshold accuracy over −40°C to +125°C, ultra-low 1.0µA supply current at 3.6V, and SC70-3 footprint compatibility with space-constrained embedded designs.
Technical Context
The MAX6464XR26+T implements a precision bandgap reference and comparator with internally trimmed resistor networks to set VTH− = 2.600V (±2.5%) and VTH+ = 2.730V (5% hysteresis). Its internal timeout circuit ensures reset remains asserted for ≥150ms after VCC exceeds VTH+, independent of input slew rate or noise.
This device operates across full industrial temperature range (−40°C to +125°C) with no external components required. It rejects short-duration VCC transients up to 20µs when overdrive exceeds 100mV, and maintains valid output down to VCC = 1.2V per absolute maximum ratings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.2V to 6.0V - supports direct monitoring of Li+ battery (2.7–4.2V), 3.3V logic rails, and 5V systems without level shifting |
| Lower Threshold (VTH−) | 2.600V ±2.5% - factory-trimmed for precise 2.6V brownout detection at all temperatures |
| Reset Timeout Period | 150ms min - guarantees µP reset hold time sufficient for oscillator stabilization and firmware initialization |
| Supply Current (ICC) | 1.0µA typical at 3.6V - enables >10-year battery life in always-on sensor nodes |
| Output Type | Push-pull, active-low - drives CMOS inputs directly; no external pullup required |
| Operating Temperature | −40°C to +125°C - qualified for automotive under-hood and industrial control environments |
| Threshold Hysteresis | 5% - prevents output chatter near trip point during slow-rising/falling supply transitions |
Pinout & Package
MAX6464XR26+T is housed in a 3-pin SC70-3 package (2.0mm × 2.1mm × 0.9mm), optimized for high-density PCB layouts. Pin 1 is OUT, Pin 2 is GND, and Pin 3 is VCC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Reset output signal | Active-low push-pull driver; sinks ≥1mA at VCC ≥ 2.5V and VOL ≤ 0.3V - directly interfaces with µP /RESET pin |
| 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 voltage | Single pin serves as both power source and input for voltage supervision - eliminates need for separate sense rail |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 1.0µA at 3.6V - reduces quiescent power in battery-backed real-time clocks and memory retention circuits |
| Factory-set VTH− | 2.600V ±2.5% - eliminates manual calibration and external resistor dividers in production |
| Guaranteed timeout | 150ms min - ensures deterministic reset duration regardless of VCC ramp rate or noise coupling |
| Transient immunity | Rejects <20µs glitches at 100mV overdrive - prevents spurious resets in electrically noisy motor-control or RF modules |
| Wide temp range | −40°C to +125°C operation - maintains specification compliance in unregulated enclosures and automotive junction boxes |
Applications
| Battery-Powered Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Continuous glucose monitor with coin-cell battery and low-power MCU. IC Role / Device Role / Timing Role: Supervises 3.0V regulated rail; asserts /RESET if voltage drops below 2.6V due to battery depletion or load surge. Use Value: 150ms timeout ensures ADC and radio initialization completes before firmware execution begins. |
Use Scenario: DIN-rail mounted analog input module operating in factory ambient (−25°C to +70°C). IC Role / Device Role / Timing Role: Monitors 5V backplane supply; holds microcontroller in reset during brownouts caused by shared power bus transients. Use Value: ±2.5% threshold accuracy prevents false resets across temperature, improving system uptime. |
| Portable Diagnostic Handhelds | Automotive Body Control Units |
Use Scenario: Ultrasound probe with integrated FPGA and rechargeable Li-ion pack. IC Role / Device Role / Timing Role: Detects 2.6V undervoltage on 3.3V FPGA core rail; provides clean reset pulse after charge cycle completes. Use Value: 1.0µA supply current extends standby time between clinical uses without compromising supervision integrity. |
Use Scenario: Door module with CAN transceiver and LIN interface powered from vehicle battery (9–16V via LDO). IC Role / Device Role / Timing Role: Supervises 3.3V LDO output; initiates controlled shutdown sequence when ignition-off battery decay crosses 2.6V. Use Value: SC70-3 footprint allows placement adjacent to power management IC, minimizing trace inductance and noise pickup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar µP supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G18DBVR | 2.5V threshold, 200ms timeout, 1.8µA ICC, SOT23-6 package | Higher supply current; requires external capacitor for timeout adjustment | Select when longer timeout or adjustable delay is needed; not drop-in due to different pin count and timeout architecture |
| STM6315RWX6F | 2.63V threshold, 200ms timeout, 1.5µA ICC, SOT23-3 package | ±2% threshold accuracy, but only specified over −40°C to +85°C | Prefer for cost-sensitive consumer devices where extended temperature qualification is unnecessary |
Compared with TPS3808G18DBVR and STM6315RWX6F, the MAX6464XR26+T delivers tighter threshold tolerance over full automotive temperature range and lower quiescent current, making it optimal for long-life, high-reliability embedded systems where reset timing determinism and battery efficiency are critical.
Availability
MAX6464XR26+T is available at Aetrix Electronics and suitable for battery-powered medical sensors, industrial PLC I/O modules, portable diagnostic handhelds, and automotive body control units requiring stable component supply and long-term lifecycle support.
Supply support for MAX6464XR26+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 demanding industrial, automotive, and medical applications.
The MAX6464XR26+T belongs to the MAX6461–MAX6466 family of ultra-low-power supervisory circuits engineered specifically for reliable reset generation in space- and energy-constrained systems where external components must be eliminated.
FAQ
What is the exact lower voltage threshold (VTH−) of the MAX6464XR26+T?
The MAX6464XR26+T has a factory-trimmed lower trip threshold of 2.600V with ±2.5% accuracy over the full −40°C to +125°C temperature range. At +25°C, VTH− is guaranteed between 2.535V and 2.665V per Table 1a. This value is fixed and cannot be adjusted externally.
Does the MAX6464XR26+T require any external components to function?
No, the MAX6464XR26+T operates autonomously with no external resistors, capacitors, or diodes required. Its precision bandgap reference, comparator, trimmed resistor network, and internal timeout circuit are fully integrated. Only VCC, GND, and the /RESET load connection are needed.
How does the reset timeout behavior work in the MAX6464XR26+T?
The MAX6464XR26+T asserts its active-low output when VCC falls below 2.600V and holds it asserted for a minimum of 150ms after VCC rises above the upper threshold (VTH+ = 2.730V). This timeout is internally generated and independent of VCC slew rate, ensuring consistent reset duration across varying power-up conditions.
Can the MAX6464XR26+T be used with a 1.8V supply rail?
No - the MAX6464XR26+T is not specified to operate or supervise below 1.2V per Absolute Maximum Ratings, but its 2.6V threshold makes it incompatible with 1.8V rails. For 1.8V systems, consider the MAX6464XR18+T (1.8V threshold variant) or alternate families like MAX6315.
What is the output drive capability of the MAX6464XR26+T's push-pull stage?
The MAX6464XR26+T's push-pull output sinks ≥1.0mA at VOL ≤ 0.3V when VCC ≥ 2.5V, and sources ≥1.5mA at VOH ≥ 0.8×VCC. This allows direct interfacing with standard CMOS /RESET inputs without external pullup resistors or level translators.
MAX6464XR26+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:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.6V
- 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
MAX6464XR26+T FAQ
1.How can I place an order for MAX6464XR26+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6464XR26+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 MAX6464XR26+T reliable?
The price and inventory of MAX6464XR26+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6464XR26+T is usually 5 days.
3.What payment methods are accepted for MAX6464XR26+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6464XR26+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6464XR26+T?
MAX6464XR26+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6464XR26+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 MAX6464XR26+T?
For technical support, including MAX6464XR26+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6464XR26+T requirements.
6.How does Aetrix verify that MAX6464XR26+T is sourced from the original manufacturer or authorized distributors?
All MAX6464XR26+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 MAX6464XR26+T meets industry standards.
7.What is the process for return or replacement of MAX6464XR26+T?
All MAX6464XR26+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6464XR26+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 MAX6464XR26+T part is unused and in its original packaging.
Return procedure for MAX6464XR26+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6464XR26+T Tags
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MIC826SYMT-TR
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APX803S-31SA-7
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APX803L20-29SA-7
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