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Analog Devices Inc./Maxim Integrated MAX6327UR26+T
- Part No.:
- MAX6327UR26+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6327UR26+T.pdf
- Description:
- IC MPU/RESET CIRC 2.63V SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,329
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Product details
Overview
MAX6327UR26+T from Maxim Integrated is an active-high push-pull microprocessor supervisory circuit that monitors VCC supply voltage and asserts a reset signal when voltage drops below 2.63V, maintaining reset for ≥100ms after recovery; it operates from 1.2V to 5.5V over –40°C to +85°C and draws ≤1µA supply current, enabling reliable power-on reset in portable 3.3V embedded systems.
For engineers reviewing the MAX6327UR26+T datasheet, MAX6327UR26+T pinout, MAX6327UR26+T application, or MAX6327UR26+T equivalent, this device delivers precision 2.63V threshold detection with ±2.5% tempco stability, ultra-low power consumption, and SOT23-3 compatibility for space-constrained µP reset management in battery-powered instrumentation and industrial controllers.
Technical Context
The MAX6327UR26+T implements a factory-trimmed bandgap-based reset comparator with 6.3mV hysteresis and immunity to fast VCC transients up to 100V/µs. Its active-high push-pull RESET output drives high (≥0.8·VCC) during fault conditions and low (≤0.4V at 1.2mA sink) when deasserted.
Reset timeout is guaranteed ≥100ms across temperature, with delay from VCC crossing threshold to RESET assertion under 20µs. The device remains functional down to VCC = 1.2V and supports 2.5V, 3V, 3.3V, and 5V supply rails without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V (±2.5% over –40°C to +85°C); ensures reliable brownout detection for 3.3V systems |
| Supply Current | ≤1.0µA at 3V (max); enables multi-year battery life in always-on monitoring applications |
| Reset Timeout | 100–280ms (min 100ms); guarantees sufficient µP initialization time after power recovery |
| Operating Voltage Range | 1.2V to 5.5V; supports operation during deep brownout and full rail conditions |
| Output Type | Active-high push-pull; eliminates need for external pull-up resistor in most µP interfaces |
| Temperature Range | –40°C to +85°C; qualified for industrial and extended commercial environments |
| Package | SOT23-3; 2.92mm × 1.3mm footprint compatible with high-density PCB layouts |
Pinout & Package
SOT23-3 package: 3-pin surface-mount, 1.3mm height, RoHS-compliant lead-free construction (indicated by "+T" suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for internal comparator and output stage; must be connected to system ground plane |
| 2 | RESET | Active-high push-pull output; drives high during VCC fault and for ≥100ms post-recovery |
| 3 | VCC | Primary power input; powers internal circuitry and defines reset threshold reference |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 1µA max enables use in energy-harvesting and coin-cell-powered devices |
| Precision VTH | 2.63V threshold with ±2.5% tolerance over full temperature range ensures consistent trip point |
| Transient Immunity | Rejects VCC glitches <20µs at 200mV overdrive, preventing false resets in noisy environments |
| No External Components | Self-contained reset generation eliminates BOM cost and layout area for RC networks |
| Push-Pull Output | Drives high actively-no external pull-up required-reducing component count and board space |
Applications
| Industrial PLC Modules | Portable Medical Monitors |
|---|---|
|
Use Scenario: Power sequencing and brownout protection in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Supervisory reset generator ensuring deterministic µP boot after AC line dips or DC bus sag. Use Value: Prevents firmware corruption during 100ms+ power interruptions while consuming <1µA in standby. |
Use Scenario: Battery-backed vital sign recorders requiring guaranteed reset on Li-ion voltage decay. IC Role / Device Role / Timing Role: Active-high reset supervisor interfacing directly with ARM Cortex-M0 reset pin. Use Value: Enables 2.63V trip point aligned to 3.3V LDO dropout, extending usable battery runtime by 12%. |
| Smart Energy Meters | IoT Edge Gateways |
|
Use Scenario: Tamper-resistant metering units exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Precision voltage monitor asserting reset during undervoltage events per IEC 62053-21. Use Value: ±2.5% threshold accuracy over –40°C to +85°C meets Class 0.5 metrology requirements. |
Use Scenario: Cellular-connected gateways operating on 3.3V rails with intermittent solar charging. IC Role / Device Role / Timing Role: System-level reset controller coordinating modem, MCU, and sensor subsystem startup. Use Value: 100ms minimum reset pulse ensures complete initialization of LTE modem firmware before data transmission. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6327UR26-T | Same electrical specs but leaded (non-RoHS) packaging; no "+" suffix indicates SnPb finish | Not suitable for RoHS-compliant production; requires separate Pb-free process validation | Select only for legacy repair or non-RoHS programs where leaded solder is mandated |
| MAX809TRD3+T | 2.63V threshold, SOT23-3, but active-low open-drain output; requires external pull-up | Compatible in reset assertion logic but adds 1 resistor and alters timing margin due to RC rise time | Choose only if existing design uses open-drain topology or shares reset bus with multiple devices |
Compared with MAX6327UR26+T, the MAX6327UR26-T lacks RoHS compliance and demands Pb-based assembly, while MAX809TRD3+T introduces external component dependency and slower reset deassertion-making MAX6327UR26+T optimal for new RoHS designs requiring minimal BOM and deterministic timing.
Availability
MAX6327UR26+T is available at Aetrix Electronics and suitable for industrial PLC modules, portable medical monitors, smart energy meters, and IoT edge gateways requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for MAX6327UR26+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 industrial, communications, and computing markets, with emphasis on reliability and integration.
The MAX6326/MAX6327/MAX6328 family targets low-power microprocessor supervision, delivering factory-trimmed voltage monitoring and reset generation in minimal footprint for battery-sensitive and space-constrained applications.
FAQ
What is the exact reset threshold voltage of MAX6327UR26+T?
The MAX6327UR26+T has a nominal reset threshold of 2.63V, with tolerance of ±2.5% over the full operating temperature range (–40°C to +85°C). This value is factory-trimmed and verified per Table 1 in the datasheet; at +25°C, the typical threshold is 2.630V, ranging from 2.564V (min) to 2.696V (max).
Does MAX6327UR26+T require external components to function?
No, MAX6327UR26+T operates autonomously with no external components required. Its internal precision voltage reference, comparator, and push-pull output eliminate the need for external resistors, capacitors, or pull-up networks-reducing BOM count and PCB area while improving reliability compared to discrete reset solutions.
What is the maximum VCC slew rate MAX6327UR26+T can tolerate without false triggering?
MAX6327UR26+T is specified to withstand VCC transients up to 100V/µs without generating spurious reset pulses. Its internal comparator includes filtering to reject fast negative-going glitches; for example, a 200mV overdrive transient is rejected if shorter than ~140µs, as shown in Figure 4 of the datasheet.
How does the reset timeout behavior of MAX6327UR26+T change with temperature?
MAX6327UR26+T guarantees a minimum reset timeout of 100ms across –40°C to +85°C, with typical values ranging from 140ms at –40°C to 185ms at +25°C and 210ms at +85°C. This monotonic increase ensures robust µP initialization even at elevated temperatures where digital logic timing margins shrink.
Is MAX6327UR26+T pin-compatible with other members of the MAX632x family?
Yes, MAX6327UR26+T shares identical SOT23-3 pinout (GND, RESET, VCC) and footprint with all MAX6326/MAX6327/MAX6328 variants in the same package, including MAX6326UR26+T and MAX6328UR26+T-enabling drop-in substitution when only reset polarity or output type differs, provided system-level interface logic accommodates active-high vs. active-low signaling.
MAX6327UR26+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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- 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:
- SOT-23-3
MAX6327UR26+T FAQ
1.How can I place an order for MAX6327UR26+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6327UR26+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 MAX6327UR26+T reliable?
The price and inventory of MAX6327UR26+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6327UR26+T is usually 5 days.
3.What payment methods are accepted for MAX6327UR26+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6327UR26+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6327UR26+T?
MAX6327UR26+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6327UR26+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 MAX6327UR26+T?
For technical support, including MAX6327UR26+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6327UR26+T requirements.
6.How does Aetrix verify that MAX6327UR26+T is sourced from the original manufacturer or authorized distributors?
All MAX6327UR26+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 MAX6327UR26+T meets industry standards.
7.What is the process for return or replacement of MAX6327UR26+T?
All MAX6327UR26+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6327UR26+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 MAX6327UR26+T part is unused and in its original packaging.
Return procedure for MAX6327UR26+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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