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Analog Devices Inc./Maxim Integrated MAX6386XS29D5+
- Part No.:
- MAX6386XS29D5+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6386XS29D5+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,688
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Product details
Overview
MAX6386XS29D5+ from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 2.93V reset threshold (±2.5% over -40°C to +125°C), 280ms minimum VCC reset timeout, and debounced manual reset input (MR) featuring internal 63kΩ pullup. It monitors single supply voltage in battery-powered embedded systems requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6386XS29D5+ datasheet, MAX6386XS29D5+ pinout, MAX6386XS29D5+ application, or MAX6386XS29D5+ equivalent, key selection criteria include its 2.93V threshold accuracy, 280ms reset timeout, SC70-4 package footprint, MR input compatibility with TTL/CMOS logic, and guaranteed valid reset state down to VCC = 1V.
Technical Context
The MAX6386XS29D5+ implements a precision bandgap-based voltage comparator for VCC monitoring and an independent manual reset path with glitch rejection (100ns) and 1µs minimum pulse width support. Its open-drain RESET output requires an external pullup and asserts low when VCC falls below 2.93V or MR is pulled low.
Reset remains asserted for ≥280ms after VCC rises above threshold or MR is released. The device guarantees correct RESET logic state across full operating voltage (1.0V–5.5V) and temperature (-40°C to +125°C), with ±60ppm/°C reset threshold tempco and immunity to negative-going VCC transients up to 35µs at 100mV overdrive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V nominal, ±2.5% over -40°C to +125°C - ensures accurate brownout detection across automotive/industrial temperature range |
| VCC Operating Range | 1.0V to 5.5V - supports operation down to ultra-low-voltage MCU cores and up to 5V legacy systems |
| Reset Timeout | 280ms minimum - provides sufficient hold time for slow-ramping power supplies and firmware initialization |
| Supply Current | 3µA at 1.8V, 6µA at 3.6V - enables multi-year battery life in portable equipment |
| MR Input Pullup | 63kΩ internal resistor - eliminates need for external pullup while ensuring clean TTL/CMOS-compatible logic levels |
| RESET Output Type | Open-drain active-low - allows wired-OR configuration and level translation with external pullup |
| Reset Propagation Delay | 35µs (VCC falling) - fast response to supply collapse without false triggering on noise |
Pinout & Package
MAX6386XS29D5+ is housed in a RoHS-compliant 4-pin SC70 package (package code X4+1, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm with 0.65mm pitch. Pin 1 is RESET (open-drain active-low), Pin 2 is VCC, Pin 3 is MR (active-low manual reset), and Pin 4 is GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Open-drain active-low reset output | Drives low during reset assertion; requires external pullup resistor for logic-high state; compatible with mixed-voltage systems |
| 2 - VCC | Power supply input and monitored voltage rail | Supplies internal circuitry and serves as primary reset trigger source; accepts 1.0V–5.5V with guaranteed operation down to 1V |
| 3 - MR | Active-low manual reset input | Forces reset when pulled low; debounced internally; internal 63kΩ pullup eliminates external component; supports pushbutton or logic-driven reset |
| 4 - GND | Ground reference | Common return path for VCC, MR, and RESET; must be low-impedance connection to ensure accurate threshold sensing |
Key Features
| Feature | Design Value |
|---|---|
| Factory-set 2.93V reset threshold | Eliminates external resistor network; reduces BOM count and layout area vs. adjustable supervisors |
| 280ms minimum reset timeout | Ensures reliable processor initialization across wide range of power supply ramp rates and clock frequencies |
| Debounced MR input with internal pullup | Supports direct connection to momentary switch or logic signal without external RC network or Schmitt trigger |
| Guaranteed RESET validity down to VCC = 1V | Prevents undefined microprocessor state during deep brownout; avoids spurious resets or lockups |
| Negative-going transient immunity | Withstands ≤35µs glitches at 100mV overdrive - improves robustness in electrically noisy environments |
Applications
| Battery-Powered IoT Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Remote environmental sensor node powered by coin-cell battery with intermittent wake-up cycles. IC Role / Device Role / Timing Role: Supervisory circuit asserting reset during cold-start and brownout events to prevent corrupted ADC readings or flash writes. Use Value: 3µA quiescent current extends battery life beyond 5 years; 2.93V threshold matches Li-ion discharge curve; 280ms timeout accommodates slow LDO startup. | Use Scenario: DIN-rail mounted programmable logic controller with dual 3.3V/24V supply rails and field-wireable inputs. IC Role / Device Role / Timing Role: Primary VCC monitor for 3.3V logic domain, interfacing with FPGA configuration circuitry and watchdog timer. Use Value: Open-drain RESET enables shared reset bus with other peripherals; MR input supports front-panel reset button; ±2.5% threshold accuracy ensures deterministic behavior across industrial temperature range. |
| Medical Wearable Devices | Automotive Body Control Modules |
Use Scenario: FDA-cleared ECG patch with ultra-low-power ARM Cortex-M0+ MCU and analog front-end. IC Role / Device Role / Timing Role: Power-on reset generator and brownout detector for safety-critical firmware execution path. Use Value: Guaranteed RESET state down to VCC = 1V prevents undefined MCU behavior during battery depletion; SC70-4 footprint minimizes PCB area in space-constrained wearable form factor. | Use Scenario: CAN-connected door module monitoring 12V battery and 5V regulator outputs in passenger vehicle. IC Role / Device Role / Timing Role: Secondary supervisor for 5V microcontroller supply, triggered via MR from central body controller. Use Value: MR input allows synchronized system-wide reset; AEC-Q100 qualified versions available; 280ms timeout aligns with automotive power sequencing requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3+T | 2.93V threshold, 240ms timeout, push-pull active-low output, no MR input, SC70-3 package | Lacks manual reset capability; smaller 3-pin footprint but no MR functionality | Select when MR is unnecessary and board space is constrained |
| TPS3808G33DBVR | 3.3V threshold, 200ms timeout, open-drain active-low output, MR input, SOT-23-5 package | Different threshold (3.3V vs. 2.93V); larger 5-pin package; higher 8µA supply current | Select when 3.3V rail monitoring is required and SOT-23-5 is preferred |
Compared with MAX809TRD3+T and TPS3808G33DBVR, MAX6386XS29D5+ uniquely combines 2.93V precision threshold, 280ms timeout, MR input, and SC70-4 footprint-making it optimal for space-limited, battery-operated systems needing both voltage monitoring and user-initiated reset.
Availability
MAX6386XS29D5+ is available at Aetrix Electronics and suitable for battery-powered IoT sensors, industrial PLC I/O modules, medical wearables, and automotive body control modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MAX6386XS29D5+ 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, mixed-signal, and power management ICs for demanding industrial, automotive, and computing applications.
The MAX6381–MAX6390 family delivers low-power, high-accuracy μP supervisory circuits optimized for reliable reset generation in space- and energy-constrained embedded systems with single or dual supply monitoring needs.
FAQ
What is the exact reset threshold voltage of MAX6386XS29D5+ and how stable is it over temperature?
The MAX6386XS29D5+ has a factory-set nominal reset threshold of 2.93V, with guaranteed accuracy of ±2.5% over the full operating temperature range of -40°C to +125°C. Its reset threshold tempco is ±60ppm/°C, meaning drift is less than ±0.35mV/°C - ensuring consistent brownout detection across automotive and industrial environments without calibration.
Does MAX6386XS29D5+ require an external pullup resistor on the RESET pin?
Yes, MAX6386XS29D5+ features an open-drain active-low RESET output, which requires an external pullup resistor to establish a defined logic-high state when deasserted. Typical values range from 10kΩ to 100kΩ depending on bus capacitance and rise-time requirements. The device itself does not include an internal pullup on RESET.
What is the function and electrical behavior of the MR pin on MAX6386XS29D5+?
The MR pin on MAX6386XS29D5+ is an active-low manual reset input with internal 63kΩ pullup to VCC. Driving MR low forces RESET assertion regardless of VCC level; reset remains active for the full 280ms timeout after MR is released. It accepts TTL/CMOS logic levels and supports direct connection to pushbuttons or digital outputs without external components.
Can MAX6386XS29D5+ operate reliably at VCC = 1.2V?
Yes, MAX6386XS29D5+ is fully specified to operate and guarantee correct RESET logic state down to VCC = 1.0V. At 1.2V, all functions - including reset assertion/deassertion timing, MR input recognition, and open-drain output drive strength - remain within datasheet limits, making it suitable for ultra-low-voltage microcontrollers and energy-harvesting systems.
Is MAX6386XS29D5+ pin-compatible with other members of the MAX6381–MAX6390 family?
MAX6386XS29D5+ shares the same 4-pin SC70 package and pinout (RESET, VCC, MR, GND) with MAX6384, MAX6385, and MAX6390 in XS-prefix variants. However, it is not pin-compatible with 3-pin SC70 (e.g., MAX6381) or 6-pin μDFN versions. Always verify pin mapping against the specific ordering part number's datasheet diagram before PCB layout.
MAX6386XS29D5+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.93V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 280ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6386XS29D5+ FAQ
1.How can I place an order for MAX6386XS29D5+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6386XS29D5+ 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 MAX6386XS29D5+ reliable?
The price and inventory of MAX6386XS29D5+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6386XS29D5+ is usually 5 days.
3.What payment methods are accepted for MAX6386XS29D5+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6386XS29D5+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6386XS29D5+?
MAX6386XS29D5+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6386XS29D5+ 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 MAX6386XS29D5+?
For technical support, including MAX6386XS29D5+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6386XS29D5+ requirements.
6.How does Aetrix verify that MAX6386XS29D5+ is sourced from the original manufacturer or authorized distributors?
All MAX6386XS29D5+ 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 MAX6386XS29D5+ meets industry standards.
7.What is the process for return or replacement of MAX6386XS29D5+?
All MAX6386XS29D5+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6386XS29D5+, 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 MAX6386XS29D5+ part is unused and in its original packaging.
Return procedure for MAX6386XS29D5+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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