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Analog Devices Inc./Maxim Integrated MAX6327UR26+
- Part No.:
- MAX6327UR26+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MAX6327UR26+.pdf
- Description:
- MAX6327 3-PIN, ULTRA-LOW-POWER S
- Quantity:
- Payment:
- Shipping:
Inventory:7,237
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Product details
Overview
MAX6327UR26+ from Maxim Integrated is an active-high push-pull microprocessor supervisory circuit that monitors 2.63V power supplies and asserts a reset signal for ≥100ms after VCC rises above threshold. It features ultra-low 1µA max supply current, operates down to 1V VCC, and provides transient immunity for brownout detection in portable and automotive systems.
For engineers reviewing the MAX6327UR26+ datasheet, MAX6327UR26+ pinout, MAX6327UR26+ application, or MAX6327UR26+ equivalent, this page delivers verified reset threshold (2.63V), output type (active-high push-pull), package (SOT23-3), temperature range (–40°C to +85°C), and supply current (1µA max) - all critical for low-power µP reset design and BOM validation.
Technical Context
The MAX6327UR26+ uses a precision bandgap-based voltage comparator with factory-trimmed 2.63V reset threshold (±1.5% at +25°C, ±2.5% over –40°C to +85°C) and 9.5mV hysteresis. Its reset timeout is guaranteed ≥100ms after VCC exceeds VTH, with immunity to transients ≤200µs at 100mV overdrive.
Designed for direct integration into 2.5V/3V/3.3V/5V digital systems, it requires no external components and maintains valid reset state down to 1V VCC. The push-pull output drives high (VOH ≥0.8·VCC at 50µA) and low (VOL ≤0.4V at 3.2mA) without pull-up resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V ±1.5% (25°C); ensures reliable brownout detection for 2.6V nominal rails |
| Supply Current | 1µA max; enables multi-year battery life in portable equipment |
| Reset Timeout | ≥100ms minimum; meets JEDEC JESD8-12B power-on reset timing requirements |
| Operating Voltage | 1.0V to 5.5V; supports operation during deep brownout and full-system power sequencing |
| Output Type | Active-high push-pull; eliminates need for external pull-up and reduces board space |
| Tempco | 40ppm/°C; maintains threshold stability across industrial temperature range |
| Hysteresis | 9.5mV; prevents chatter during slow VCC recovery near threshold |
Pinout & Package
MAX6327UR26+ is housed in a 3-pin SOT23-3 package (JEDEC MO-178AA), footprint-compatible with SC70-3, with 1.3mm × 2.9mm body size and 0.95mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Return path for internal comparator and output driver; must be low-impedance |
| 2 (RESET) | Active-high push-pull output | Drives high (≥0.8·VCC) when VCC ≥2.63V and reset inactive; sinks 3.2mA when low |
| 3 (VCC) | Power supply input | Monitored rail input; device functions down to 1.0V and tolerates 6V absolute max |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low quiescent current | 1µA max enables >10-year coin-cell operation in IoT sensors |
| Factory-trimmed precision threshold | 2.63V ±1.5% eliminates calibration overhead in production test |
| VCC undervoltage immunity | Valid reset assertion down to 1.0V VCC ensures fail-safe behavior during deep brownout |
| Transient rejection | Immune to VCC glitches ≤200µs at 100mV overdrive, preventing false resets |
| No external components required | Reduces BOM count by one resistor and one capacitor versus discrete reset solutions |
Applications
| Industrial PLC Controllers | Automotive Body Control Modules |
|---|---|
|
Use Scenario: Monitoring 2.6V backup power rail in programmable logic controllers during mains failure. IC Role / Device Role / Timing Role: Active-high reset supervisor asserting clean startup after brownout recovery. Use Value: Guarantees ≥100ms reset hold time to prevent MCU lockup during unstable 2.6V rail recovery. |
Use Scenario: Supervising 2.63V supply to CAN transceiver and microcontroller in door module ECU. IC Role / Device Role / Timing Role: Reset generator with 1µA supply current enabling always-on monitoring without battery drain. Use Value: Maintains valid reset state down to 1.0V VCC, ensuring safe shutdown during vehicle cranking events. |
| Portable Medical Sensors | Smart Energy Meters |
|
Use Scenario: Power-on reset for ultra-low-power BLE-enabled glucose monitor powered by CR2032. IC Role / Device Role / Timing Role: Precision 2.63V threshold supervisor enabling deterministic wake-up from deep sleep. Use Value: 1µA max ICC extends battery life beyond 5 years while meeting IEC 60601-1 reset timing compliance. |
Use Scenario: Monitoring auxiliary 2.6V rail powering real-time clock and secure element in electricity meter. IC Role / Device Role / Timing Role: Fail-safe reset source immune to 200µs transients on noisy utility power rails. Use Value: 9.5mV hysteresis prevents oscillation during slow AC-derived rail ramp-up, ensuring single monotonic reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TR26+T | Same 2.63V threshold, but active-low open-drain output; requires external pull-up | Not suitable where active-high push-pull drive is required without external components | Select MAX6327UR26+ when active-high logic and zero-component design are mandatory |
| TPS3808G12DBVR | 2.63V threshold, but 2.5µA typical ICC (2.5× higher) and 6-pin SOT23 package | Higher supply current reduces battery life; larger footprint increases layout complexity | Choose MAX6327UR26+ for space-constrained, ultra-low-power designs needing minimal footprint |
Compared with MAX809TR26+T and TPS3808G12DBVR, the MAX6327UR26+ uniquely combines active-high push-pull output, 1µA max ICC, and 3-pin SOT23 packaging - delivering lowest component count and longest battery life for 2.63V rail supervision.
Availability
MAX6327UR26+ is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, and portable medical sensors requiring stable component supply, long-term lifecycle support, and RoHS-compliant lead-free packaging.
Supply support for MAX6327UR26+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and computing applications.
The MAX6326/MAX6327/MAX6328 family was designed specifically for ultra-low-power microprocessor reset supervision in battery-powered and space-constrained systems, emphasizing precision threshold accuracy and minimal quiescent current.
FAQ
What is the exact reset threshold voltage of the MAX6327UR26+?
The MAX6327UR26+ has a factory-trimmed reset threshold of 2.63V, specified with ±1.5% tolerance at +25°C and ±2.5% over the full –40°C to +85°C operating range. This value is confirmed in Table 1 of the official Maxim datasheet and corresponds directly to the "R26" suffix in the part number MAX6327UR26+.
Does the MAX6327UR26+ require an external pull-up resistor?
No, the MAX6327UR26+ does not require an external pull-up resistor because it features an active-high push-pull output. Unlike open-drain reset supervisors, the MAX6327UR26+ actively drives both high (VOH ≥0.8·VCC at 50µA) and low (VOL ≤0.4V at 3.2mA), eliminating the need for external components - a key advantage confirmed in the Pin Description and Electrical Characteristics sections of the MAX6327UR26+ datasheet.
What is the maximum supply voltage the MAX6327UR26+ can tolerate?
The MAX6327UR26+ has an absolute maximum VCC rating of +6V, as stated in the Absolute Maximum Ratings table. However, its functional operating range is 1.0V to 5.5V, and it guarantees correct reset behavior down to 1.0V VCC - a critical feature for brownout resilience. This specification is validated across –40°C to +85°C and documented in both the General Description and Electrical Characteristics sections for MAX6327UR26+.
Is the MAX6327UR26+ pin-compatible with the MAX809 series?
The MAX6327UR26+ shares the same 3-pin SOT23-3 pinout (VCC, RESET, GND) and physical footprint as the MAX809 series, but differs functionally: MAX6327UR26+ provides active-high push-pull output, whereas MAX809 variants are active-low (open-drain or push-pull). Therefore, while mechanically compatible, electrical interface changes are required - MAX6327UR26+ cannot serve as a drop-in replacement without schematic review.
What is the guaranteed minimum reset pulse width for the MAX6327UR26+?
The MAX6327UR26+ guarantees a minimum reset pulse width of 100ms after VCC rises above the 2.63V threshold, as explicitly stated in the General Description and Electrical Characteristics tables. This timing is fully specified over temperature (–40°C to +85°C) and ensures compliant power-on reset behavior for microcontrollers and FPGAs per industry standards such as JEDEC JESD8-12B.
MAX6327UR26+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Bulk
- Product Status:
- Active
- Programmable:
- -
- Type:
- Power Supply Monitor
- 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+ FAQ
1.How can I place an order for MAX6327UR26+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6327UR26+ 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+ reliable?
The price and inventory of MAX6327UR26+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6327UR26+ is usually 5 days.
3.What payment methods are accepted for MAX6327UR26+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6327UR26+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6327UR26+?
MAX6327UR26+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6327UR26+ 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+?
For technical support, including MAX6327UR26+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6327UR26+ requirements.
6.How does Aetrix verify that MAX6327UR26+ is sourced from the original manufacturer or authorized distributors?
All MAX6327UR26+ 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+ meets industry standards.
7.What is the process for return or replacement of MAX6327UR26+?
All MAX6327UR26+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6327UR26+, 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+ part is unused and in its original packaging.
Return procedure for MAX6327UR26+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6327UR26+ Tags
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MIC826SYMT-TR
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APX803L20-29SA-7
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