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Analog Devices Inc./Maxim Integrated MAX6386XS16D3-T
- Part No.:
- MAX6386XS16D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6386XS16D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,396
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Product details
Overview
MAX6386XS16D3-T from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 1.58V reset threshold (±2.5% over −40°C to +125°C), 140ms minimum reset timeout, and debounced manual reset input (MR) featuring internal 63kΩ pullup. It monitors single supply voltage (VCC = 1.0V to 5.5V) in battery-powered embedded systems requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6386XS16D3-T datasheet, MAX6386XS16D3-T pinout, MAX6386XS16D3-T application, or MAX6386XS16D3-T equivalent, key selection criteria include guaranteed reset validity down to VCC = 1V, negative-going VCC transient immunity, SC70-4 package footprint compatibility, and precise 1.58V threshold for 1.8V logic rail supervision.
Technical Context
The MAX6386XS16D3-T implements a precision bandgap-based reset comparator with ±2.5% threshold accuracy across −40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a fixed 140ms minimum reset assertion period after VCC recovery or MR release.
It features an active-low open-drain RESET output requiring external pullup, a debounced MR input with 1µs minimum pulse width and 100ns glitch rejection, and guaranteed correct logic state for VCC ≥ 1V - enabling robust operation during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.58V (nominal), ±2.5% over −40°C to +125°C - ensures accurate detection of 1.8V supply brownout before system instability. |
| Reset Timeout | 140ms (minimum) - guarantees sufficient hold time for microprocessor initialization and clock stabilization. |
| Supply Current | 3μA at VCC = 1.8V - enables multi-year battery life in portable IoT sensors and wearables. |
| Operating Voltage | 1.0V to 5.5V - supports direct monitoring of core rails (1.2V, 1.8V, 3.3V, 5.0V) without external level shifting. |
| MR Input Pullup | 63kΩ internal resistor - eliminates need for external pullup and enables direct connection to momentary switches. |
| RESET Output Type | Open-drain active-low - allows wired-OR configuration with multiple reset sources and flexible voltage-level interfacing. |
| VCC Transient Immunity | Validated against negative-going glitches per Typical Operating Characteristics graph - reduces false resets in noisy power environments. |
Pinout & Package
MAX6386XS16D3-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm, suitable for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary supply input and monitored voltage rail - must be decoupled with 0.1μF capacitor near pin for transient immunity. |
| 2 | RESET | Open-drain active-low reset output - requires external pullup resistor (typically 10kΩ–100kΩ) to host logic voltage. |
| 3 | MR | Active-low manual reset input - internally pulled up to VCC; driven low to force system reset independent of VCC condition. |
| 4 | GND | Analog/digital ground reference - must be connected to low-impedance system ground plane for noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 1.58V threshold | Eliminates external resistor divider for 1.8V rail supervision - reduces BOM count and layout area. |
| 140ms guaranteed reset timeout | Meets JEDEC JESD8-12B requirements for μP reset hold time - ensures deterministic boot sequence. |
| Debounced MR input with 63kΩ pullup | Supports direct switch interface without external RC network - simplifies front-panel reset design. |
| Valid reset output down to VCC = 1V | Prevents metastability during deep brownout - maintains known processor state until full power recovery. |
| Negative-going VCC transient immunity | Withstands ≤100mV, ≤10µs transients without spurious reset - improves reliability in shared power domains. |
Applications
| Portable Power Management | Industrial Sensor Node |
|---|---|
Use Scenario: Battery-powered handheld meter with 1.8V MCU and Li-ion supply. IC Role / Device Role / Timing Role: Monitors VCC during charge/discharge cycles and asserts reset if voltage drops below 1.58V during brownout. Use Value: Prevents corrupted EEPROM writes and firmware lockup during low-battery shutdown. | Use Scenario: Wireless temperature sensor node operating on coin-cell battery. IC Role / Device Role / Timing Role: Provides 140ms reset pulse on power-up and manual reset via local pushbutton. Use Value: Ensures clean MCU initialization and field-serviceable recovery without host intervention. |
| Automotive Body Control Module | Medical Wearable |
Use Scenario: Low-voltage sub-system in 12V automotive environment using LDO-regulated 1.8V rail. IC Role / Device Role / Timing Role: Supervises 1.8V core supply and interfaces with CAN controller reset input via open-drain output. Use Value: Enables fail-safe restart after load-dump-induced voltage sag without requiring additional level translators. | Use Scenario: ECG patch with ultra-low-power ARM Cortex-M0+ MCU. IC Role / Device Role / Timing Role: Generates valid reset signal even as battery depletes to 1.2V, leveraging guaranteed operation down to VCC = 1V. Use Value: Extends usable battery life by avoiding premature shutdown while maintaining functional safety integrity. |
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 | Same 1.58V threshold and 140ms timeout, but push-pull active-low output and no MR input. | Lacks manual reset capability; requires external pullup only if interfacing with higher-voltage logic. | Select when MR functionality is unnecessary and board space permits minor rework for push-pull drive. |
| TPS3808G15DBVR | 1.55V threshold (±0.5%), 200ms timeout, 1.8V–6.0V VCC range, and MR input - higher accuracy but longer timeout. | Better threshold tolerance but incompatible reset timing; requires validation of host MCU's minimum reset pulse requirement. | Choose for high-precision applications where 140ms is insufficient and tighter threshold spec justifies redesign effort. |
Compared with MAX809TRD3-T, MAX6386XS16D3-T adds essential manual reset capability in identical SC70-4 footprint; versus TPS3808G15DBVR, it delivers shorter, more deterministic reset timing critical for fast-boot MCUs - making it optimal for cost-sensitive, space-constrained 1.8V embedded systems.
Availability
MAX6386XS16D3-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, industrial sensor nodes, and automotive body control modules requiring stable component supply and long-term lifecycle support.
Supply support for MAX6386XS16D3-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, mixed-signal, and power management ICs for industrial, automotive, and computing applications.
The MAX6381–MAX6390 family targets low-power microprocessor supervision in space- and energy-constrained systems, emphasizing factory-trimmed accuracy, ultra-low quiescent current, and robust transient immunity.
FAQ
What is the exact reset threshold voltage of MAX6386XS16D3-T and how stable is it over temperature?
The MAX6386XS16D3-T has a factory-set nominal reset threshold of 1.58V, with guaranteed accuracy of ±2.5% over the full operating temperature range of −40°C to +125°C. Its temperature coefficient is 60ppm/°C, meaning threshold drift is limited to approximately ±12mV across the entire range - sufficient for reliable supervision of 1.8V logic rails without external calibration.
Does MAX6386XS16D3-T require an external pullup resistor on its RESET pin?
Yes, MAX6386XS16D3-T features an open-drain active-low RESET output and requires an external pullup resistor to the host logic voltage (e.g., 1.8V, 3.3V, or 5V). A typical value is 10kΩ to 100kΩ; lower values improve rise time but increase static current, while higher values reduce current but may degrade noise immunity in high-EMI environments.
Can MAX6386XS16D3-T operate reliably when VCC drops below 1.8V?
Yes, MAX6386XS16D3-T is guaranteed to function correctly down to VCC = 1.0V, including valid reset assertion and deassertion. Its reset output remains logically defined even at 1.0V, unlike many competitors that lose output validity below 1.5V - making it ideal for deep brownout scenarios in battery-powered devices.
What is the purpose and electrical behavior of the MR pin on MAX6386XS16D3-T?
The MR (Manual Reset) pin on MAX6386XS16D3-T is an active-low input with an internal 63kΩ pullup resistor to VCC. Driving MR low forces immediate reset assertion, which persists for the full 140ms timeout after MR is released. It accepts TTL/CMOS logic levels and supports direct connection to momentary switches - eliminating need for external debounce components.
Is MAX6386XS16D3-T pin-compatible with other members of the MAX6381–MAX6390 family?
Yes, MAX6386XS16D3-T shares identical 4-pin SC70 pinout with all MAX6384–MAX6390 variants in XS package format. This enables drop-in replacement across different reset thresholds (e.g., XS26, XS31) and timeout options (D1–D7), provided the target application accepts the corresponding electrical behavior - such as open-drain output and MR functionality.
MAX6386XS16D3-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 1.58V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6386XS16D3-T FAQ
1.How can I place an order for MAX6386XS16D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6386XS16D3-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 MAX6386XS16D3-T reliable?
The price and inventory of MAX6386XS16D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6386XS16D3-T is usually 5 days.
3.What payment methods are accepted for MAX6386XS16D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6386XS16D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6386XS16D3-T?
MAX6386XS16D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6386XS16D3-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 MAX6386XS16D3-T?
For technical support, including MAX6386XS16D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6386XS16D3-T requirements.
6.How does Aetrix verify that MAX6386XS16D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6386XS16D3-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 MAX6386XS16D3-T meets industry standards.
7.What is the process for return or replacement of MAX6386XS16D3-T?
All MAX6386XS16D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6386XS16D3-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 MAX6386XS16D3-T part is unused and in its original packaging.
Return procedure for MAX6386XS16D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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