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Analog Devices Inc./Maxim Integrated MAX6347XR36-T
- Part No.:
- MAX6347XR36-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6347XR36-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,144
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Product details
Overview
MAX6347XR36-T from Maxim Integrated is an active-high push-pull microprocessor supervisory circuit that monitors VCC supply voltage and asserts a reset signal when VCC falls below 3.60V (±2.5% over temperature), maintaining reset for ≥100ms after VCC recovers; it draws ≤1.0µA at 3.2V, operates from 1.2V to 5.5V, and is housed in a 3-pin SC70 package for portable and battery-powered systems.
For engineers reviewing the MAX6347XR36-T datasheet, MAX6347XR36-T pinout, MAX6347XR36-T application, or MAX6347XR36-T equivalent, this page delivers verified reset threshold accuracy, ultra-low quiescent current, push-pull output drive capability, thermal stability, and direct compatibility with µP reset interfaces requiring active-high assertion without external components.
Technical Context
The MAX6347XR36-T implements a precision bandgap-based reset comparator with factory-trimmed 3.60V threshold (±1.5% at +25°C, ±2.5% over −40°C to +85°C) and 40ppm/°C tempco. Its internal hysteresis is 9.5mV, ensuring noise immunity against fast transients on VCC.
It features a push-pull RESET output capable of sourcing ≥500µA at 0.8·VCC while asserted, and sinking up to 1.2mA when deasserted; the device remains fully functional down to VCC = 1.2V and guarantees correct reset state for VCC ≥ 1V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.60V ±2.5% (−40°C to +85°C); ensures reliable brownout detection for 3.3V systems with margin |
| Supply Current | ≤1.0µA at 3.2V; enables multi-year battery life in always-on monitoring applications |
| Reset Timeout | 100ms minimum power-up delay; meets JEDEC JESD78 requirement for µP initialization stability |
| VCC Operating Range | 1.2V to 5.5V; supports operation during deep brownout and across 2.5V/3.3V/5V logic domains |
| Output Type | Active-high push-pull; eliminates need for external pull-up resistor and reduces BOM count |
| Tempco | 40ppm/°C; limits threshold drift to <±21mV over full temperature range, critical for industrial reliability |
| Hysteresis | 9.5mV; prevents chatter during slow-rising VCC or near-threshold noise conditions |
Pinout & Package
MAX6347XR36-T is packaged in a 3-pin SC70-3 (X3-2 outline), 1.25mm × 0.85mm × 0.55mm body, RoHS-compliant lead-free variant ordered as MAX6347XR36+T.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference for reset comparator and output stage; must be low-impedance connection to system ground plane |
| 2 | RESET | Active-high push-pull output; drives high during VCC fault/brownout and for ≥100ms post-recovery |
| 3 | VCC | Supply input; powers internal circuitry and defines reset threshold reference; accepts 1.2V–5.5V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ICC | 1.0µA max at 3.2V enables use in energy-harvesting and coin-cell-powered devices |
| Precision reset threshold | 3.60V ±2.5% over −40°C to +85°C ensures deterministic reset behavior in industrial environments |
| Push-pull RESET output | Sources 500µA at 0.8·VCC - directly drives µP reset pins without pull-up resistor or level shifter |
| Transient immunity | Rejects VCC glitches <100µs at 3.6V overdrive - prevents false resets in noisy power rails |
| No external components | Single-chip solution replaces discrete RC reset networks, reducing PCB area and qualification effort |
Applications
| Industrial Controllers | Portable Medical Devices |
|---|---|
Use Scenario: PLC I/O modules operating in unregulated 3.3V rail environments subject to load switching and EMI. IC Role / Device Role / Timing Role: Monitors 3.3V VCC and asserts active-high RESET to ARM Cortex-M4 microcontroller during brownout. Use Value: Prevents firmware corruption by guaranteeing ≥100ms reset hold time after VCC recovery, aligned with MCU boot ROM requirements. |
Use Scenario: Handheld glucose meters powered by single CR2032 coin cell with aging voltage droop. IC Role / Device Role / Timing Role: Supervises declining battery voltage and triggers controlled shutdown before data loss occurs. Use Value: 1.2V minimum operating voltage and 1µA supply current extend usable battery life by >30% versus legacy reset ICs. |
| Smart Energy Meters | IoT Edge Sensors |
Use Scenario: ANSI C12.22-compliant meter with isolated 3.3V auxiliary supply derived from line voltage. IC Role / Device Role / Timing Role: Provides fail-safe reset during AC line sags and lightning-induced transients. Use Value: 40ppm/°C tempco and 9.5mV hysteresis ensure stable 3.60V trip point across −25°C to +70°C field deployment. |
Use Scenario: LoRaWAN node sleeping at 0.5µA, waking periodically to sample sensors and transmit. IC Role / Device Role / Timing Role: Resets ESP32 host MCU if VCC drops below 3.60V during cold-start from supercapacitor backup. Use Value: Push-pull output eliminates leakage path through pull-up resistor, preserving nanoamp sleep current integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6327XR36-T | Same 3.60V threshold and SC70-3 package, but belongs to MAX632x series with identical electrical specs and marking code FZBM | Identical function and pinout; differs only in part numbering convention (MAX6327 vs MAX6347) | Select MAX6327XR36-T if sourcing from legacy inventory or distributor stock with matching top-mark FZBM |
| TPS3123QDBVRQ1 | Automotive-grade (AEC-Q100), 3.63V threshold, 2.5µA ICC, SOT-23-3 package; lacks SC70 option | Requires layout change due to different footprint; suited for automotive infotainment where AEC-Q100 compliance is mandatory | Choose TPS3123QDBVRQ1 only when automotive qualification and extended temperature range (−40°C to +125°C) are required |
Compared with MAX6347XR36-T, MAX6327XR36-T offers identical performance in the same package with no design changes, while TPS3123QDBVRQ1 trades ultra-low ICC and SC70 size for automotive qualification and higher supply current - making MAX6347XR36-T optimal for space-constrained industrial and portable designs prioritizing battery life and board area.
Availability
MAX6347XR36-T is available at Aetrix Electronics and suitable for industrial controllers, portable medical devices, smart energy meters, and IoT edge sensors requiring stable component supply with guaranteed long-term continuity.
Supply support for MAX6347XR36-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, computing, and communications applications.
The MAX6347XR36-T belongs to the MAX63xx family of ultra-low-power µP supervisors, engineered specifically for battery-critical and space-constrained systems needing deterministic reset behavior without external components.
FAQ
What is the exact reset threshold voltage of MAX6347XR36-T and how does it vary with temperature?
The MAX6347XR36-T has a factory-trimmed nominal reset threshold of 3.60V, specified as ±1.5% at +25°C and ±2.5% over the full operating range of −40°C to +85°C. Its temperature coefficient is 40ppm/°C, resulting in a maximum total drift of approximately ±21mV across temperature - confirmed in the Electrical Characteristics table under "Reset Threshold Tempco" and "Reset Threshold" rows.
Does MAX6347XR36-T require an external pull-up resistor on its RESET pin?
No, MAX6347XR36-T does not require an external pull-up resistor because it features an active-high push-pull RESET output. The datasheet explicitly states that the MAX6327/MAX6347 variants have push-pull outputs, and the VOH specification confirms sourcing capability of ≥500µA at 0.8·VCC - eliminating the need for external biasing components.
Can MAX6347XR36-T operate reliably at VCC = 1.5V?
Yes, MAX6347XR36-T is guaranteed to maintain correct reset state down to VCC = 1.0V and fully operational from VCC = 1.2V to 5.5V. At 1.5V, the device continues asserting RESET if VCC is below 3.60V, and the reset timeout remains ≥100ms per the "Reset Active Timeout Period" specification - validated across the full temperature range.
What is the maximum transient duration that MAX6347XR36-T can ignore without asserting reset?
According to the "Maximum Transient Duration vs. Reset Threshold Overdrive" graph in the Typical Operating Characteristics, MAX6347XR36-T (SC70 package) rejects negative-going VCC transients up to ~180µs when the overdrive (VTH − VCC) is 100mV, and down to ~20µs at 200mV overdrive. This immunity is enabled by internal filtering and comparator hysteresis (9.5mV), preventing false resets from power rail noise.
Is MAX6347XR36-T pin-compatible with MAX809 or MAX810?
Yes, MAX6347XR36-T is pin-compatible with MAX809 and MAX810 in the same SC70-3 or SOT23-3 packages, as confirmed in the datasheet's "Pin Compatible with MAX803/MAX809/MAX810" feature bullet and identical pin configuration diagram. All share GND–RESET–VCC ordering and push-pull active-high output functionality for the MAX809 variant.
MAX6347XR36-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:
- 3.6V
- 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
MAX6347XR36-T FAQ
1.How can I place an order for MAX6347XR36-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6347XR36-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 MAX6347XR36-T reliable?
The price and inventory of MAX6347XR36-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6347XR36-T is usually 5 days.
3.What payment methods are accepted for MAX6347XR36-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6347XR36-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6347XR36-T?
MAX6347XR36-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6347XR36-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 MAX6347XR36-T?
For technical support, including MAX6347XR36-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6347XR36-T requirements.
6.How does Aetrix verify that MAX6347XR36-T is sourced from the original manufacturer or authorized distributors?
All MAX6347XR36-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 MAX6347XR36-T meets industry standards.
7.What is the process for return or replacement of MAX6347XR36-T?
All MAX6347XR36-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6347XR36-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 MAX6347XR36-T part is unused and in its original packaging.
Return procedure for MAX6347XR36-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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