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Analog Devices Inc./Maxim Integrated MAX6327XR29+T
- Part No.:
- MAX6327XR29+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6327XR29+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:14,257
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Product details
Overview
MAX6327XR29+T from Maxim Integrated is an active-high push-pull microprocessor supervisory circuit designed to monitor 2.93V power supplies and assert a reset signal during brownout, power-up, and power-down events. It guarantees correct operation down to VCC = 1.2V, delivers ≤1µA supply current at +25°C, maintains ≥100ms reset timeout after VCC recovery, and features factory-trimmed 2.93V threshold with ±1.5% room-temperature tolerance. It is used in portable battery-powered microcontroller systems requiring ultra-low-power voltage monitoring.
For engineers reviewing the MAX6327XR29+T datasheet, MAX6327XR29+T pinout, MAX6327XR29+T application, or MAX6327XR29+T equivalent, this page provides verified technical context, real-world design meaning of key specs, SC70-3 package details, confirmed alternative parts with functional distinctions, and supply support for industrial embedded and portable equipment designs.
Technical Context
The MAX6327XR29+T implements a precision bandgap-based reset comparator with 40ppm/°C tempco and 6.3mV hysteresis, ensuring stable threshold behavior across -40°C to +85°C. Its active-high push-pull RESET output sources ≥500µA at 0.8·VCC while asserted and sinks up to 1.2mA when deasserted, eliminating external pull-up components.
It requires no external timing or biasing elements, achieves immunity to VCC transients ≤20µs (at 100mV overdrive), and asserts reset within 20µs of VCC falling below 2.93V. The device remains fully functional down to 1.2V VCC, enabling reliable supervision in deep-brownout conditions common in Li-ion battery discharge profiles.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V ±1.5% at +25°C; ensures precise 2.93V supply monitoring without calibration |
| Supply Current | ≤1.0µA at +25°C; enables multi-year battery life in always-on portable devices |
| Reset Timeout | 100ms minimum after VCC rise; guarantees sufficient µP initialization time before release |
| Operating Voltage Range | 1.2V to 5.5V; supports supervision during deep brownout and full rail operation |
| Output Type | Active-high push-pull; drives reset line directly without external pull-up resistor |
| Tempco | 40ppm/°C; limits threshold drift to <±20mV over full -40°C to +85°C range |
| Hysteresis | 6.3mV; prevents chatter during slow VCC recovery near threshold |
Pinout & Package
MAX6327XR29+T is housed in a 3-pin SC70-3 package (outline X3-2), footprint-compatible with SOT23-3 but with smaller 1.25mm × 0.85mm body and 0.65mm lead pitch. This ultra-compact package supports high-density PCB layouts in space-constrained portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be low-impedance connection |
| 2 | RESET | Active-high push-pull output; drives µP reset pin high during fault and releases it low upon recovery |
| 3 | VCC | Power input; supplies internal circuitry and defines reset threshold reference point |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 1µA max enables >10-year battery life in coin-cell–powered IoT sensors |
| Factory-trimmed VTH | 2.93V threshold set at wafer level eliminates field calibration and reduces BOM count |
| Push-pull RESET | Eliminates need for external pull-up resistor, saving board space and reducing leakage paths |
| VCC transient immunity | Rejects negative glitches ≤20µs at 100mV overdrive, preventing false resets in noisy environments |
| Full-temp specification | Guaranteed 2.93V ±2.5% threshold and 100ms timeout across -40°C to +85°C |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Wearable ECG patch operating from single CR2032 coin cell with gradual voltage decay. IC Role / Device Role / Timing Role: Supervises 2.93V regulated rail and holds µC in reset until stable power is confirmed post-battery insertion. Use Value: 1µA quiescent current extends operational lifetime beyond 3 years; 100ms timeout ensures reliable firmware boot after cold start. | Use Scenario: DIN-rail mounted analog input module exposed to 48V DC supply fluctuations in factory automation. IC Role / Device Role / Timing Role: Monitors isolated 3.3V logic supply derived from 48V bus; asserts active-high reset on undervoltage. Use Value: Push-pull output interfaces directly with FPGA reset pin without pull-up; ±2.5% threshold tolerance ensures robustness across temperature swings. |
| Smart Meter Battery Backup | Automotive Body Control Module |
Use Scenario: Electricity meter retaining real-time clock and memory during main AC failure using supercapacitor backup. IC Role / Device Role / Timing Role: Detects drop below 2.93V on backup rail and triggers controlled shutdown sequence via µC interrupt. Use Value: 1.2V minimum VCC operation allows supervision down to end-of-capacitor discharge; 6.3mV hysteresis prevents oscillation during slow decay. | Use Scenario: Low-power door module powered by vehicle battery with load-dump and cold-crank transients. IC Role / Device Role / Timing Role: Resets microcontroller if 3.3V domain falls below 2.93V during cranking; immune to ≤20µs transients. Use Value: Factory-trimmed threshold eliminates calibration overhead; SC70-3 footprint fits tight connector-side PCB areas. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6327UR29+T | SOT23-3 package (larger 2.92mm × 1.3mm body, 0.95mm pitch); identical electrical specs | Preferred where manual soldering or legacy footprint compatibility required | Select MAX6327UR29+T for ease of assembly or existing SOT23 land patterns |
| MAX809TRD3+T | 2.93V threshold, open-drain output, 1.2µA max ICC, same SC70-3 package | Requires external pull-up; suited for bidirectional reset pins (e.g., ARM Cortex-M) | Choose MAX809TRD3+T only when µP reset pin is bidirectional and open-drain interface is mandated |
Compared with MAX6327XR29+T, the MAX6327UR29+T offers identical functionality in a larger, more hand-solderable package, while the MAX809TRD3+T trades push-pull drive for open-drain flexibility-requiring added pull-up resistance and increasing standby leakage in battery-critical designs.
Availability
MAX6327XR29+T is available at Aetrix Electronics and suitable for portable medical sensors, smart meter battery backup systems, and industrial PLC I/O modules requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6327XR29+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 is a semiconductor company specializing in analog and mixed-signal ICs for power, sensing, and connectivity applications, now part of Analog Devices.
The MAX6326/MAX6327/MAX6328 family was designed specifically for ultra-low-power microprocessor reset supervision in battery-operated and energy-sensitive embedded systems.
FAQ
What is the exact reset threshold voltage of MAX6327XR29+T and how tightly is it specified?
The MAX6327XR29+T has a nominal reset threshold of 2.93V, factory-trimmed with ±1.5% tolerance at +25°C and ±2.5% over the full -40°C to +85°C operating range. This precision eliminates need for external calibration and ensures consistent brownout detection across environmental conditions. The 6.3mV hysteresis further stabilizes behavior near the trip point. All values are production-tested and guaranteed per the datasheet Electrical Characteristics table.
Does MAX6327XR29+T require any external components to operate?
No, MAX6327XR29+T requires zero external components. Its active-high push-pull RESET output drives the microcontroller reset pin directly-no pull-up resistor needed. The internal precision voltage reference, comparator, and timing circuitry are fully integrated. This simplifies layout, reduces BOM cost, and improves reliability compared to discrete supervisor solutions.
What is the minimum VCC voltage at which MAX6327XR29+T remains functional?
MAX6327XR29+T is guaranteed to maintain correct reset state and comparator operation down to VCC = 1.2V over the full -40°C to +85°C temperature range. This enables reliable supervision during deep brownout events typical in lithium coin-cell or supercapacitor backup scenarios, where voltage decays well below nominal rails before system shutdown.
How does MAX6327XR29+T handle fast transients on the VCC supply line?
MAX6327XR29+T rejects negative-going VCC transients ≤20µs in duration when the overdrive (VTH – VCC) is 100mV, as characterized in the Typical Operating Characteristics graph "Maximum Transient Duration vs. Reset Threshold Overdrive". This immunity prevents false resets caused by switching noise or load-dump spikes, ensuring robust operation in electrically noisy environments like automotive or industrial settings.
What package type and footprint does MAX6327XR29+T use, and is it compatible with automated assembly?
MAX6327XR29+T uses the 3-pin SC70-3 package (outline X3-2), measuring 1.25mm × 0.85mm with 0.65mm lead pitch. It is supplied in tape-and-reel format and fully compatible with standard high-speed pick-and-place equipment and reflow soldering profiles. The small footprint supports miniaturized PCBs in wearables and compact sensor nodes while maintaining process reliability.
MAX6327XR29+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:
- 2.93V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6327XR29+T FAQ
1.How can I place an order for MAX6327XR29+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6327XR29+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 MAX6327XR29+T reliable?
The price and inventory of MAX6327XR29+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6327XR29+T is usually 5 days.
3.What payment methods are accepted for MAX6327XR29+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6327XR29+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6327XR29+T?
MAX6327XR29+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6327XR29+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 MAX6327XR29+T?
For technical support, including MAX6327XR29+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6327XR29+T requirements.
6.How does Aetrix verify that MAX6327XR29+T is sourced from the original manufacturer or authorized distributors?
All MAX6327XR29+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 MAX6327XR29+T meets industry standards.
7.What is the process for return or replacement of MAX6327XR29+T?
All MAX6327XR29+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6327XR29+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 MAX6327XR29+T part is unused and in its original packaging.
Return procedure for MAX6327XR29+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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