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Analog Devices Inc./Maxim Integrated MAX6386XS16D1+
- Part No.:
- MAX6386XS16D1+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6386XS16D1+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:22,430
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Product details
Overview
MAX6386XS16D1+ 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), 1ms minimum reset timeout, and manual reset input (MR) featuring internal 63kΩ pullup. It monitors single supply voltage (1.0V–5.5V) in battery-powered embedded systems requiring reliable power-on reset and brownout protection.
For engineers reviewing the MAX6386XS16D1+ datasheet, MAX6386XS16D1+ pinout, MAX6386XS16D1+ application, or MAX6386XS16D1+ equivalent, key selection criteria include guaranteed reset validity down to VCC = 1V, 3μA supply current at 1.8V, SC70-4 package footprint, MR debounce capability, and compatibility with critical μP reset timing requirements in space-constrained industrial controllers.
Technical Context
The MAX6386XS16D1+ 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 1ms minimum reset assertion period after VCC recovers above 1.58V or after MR release.
It features an open-drain RESET output requiring external pullup, a debounced manual reset input (MR) with 1µs minimum pulse width and 100ns glitch rejection, and operates with valid logic states down to VCC = 1V - enabling robust reset signaling during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.58V (nominal), ±2.5% tolerance over –40°C to +125°C - ensures consistent reset activation across automotive and industrial temperature ranges |
| Reset Timeout | 1ms (minimum) - guarantees sufficient reset hold time for slow-starting microcontrollers and FPGAs |
| Supply Current | 3μA at VCC = 1.8V - enables multi-year operation in coin-cell–powered IoT sensors and wearables |
| Operating Voltage | 1.0V to 5.5V - supports direct monitoring of core rails (1.2V, 1.8V, 3.3V) and I/O supplies without level shifting |
| MR Input Pullup | 63kΩ internal resistor - eliminates need for external pullup and enables direct connection to momentary switches or CMOS logic |
| RESET Output Type | Open-drain active-low - allows wired-OR configuration with multiple reset sources and flexible voltage-level interfacing |
| VCC Immunity | Negative-going transient immunity up to 35µs at 100mV overdrive - suppresses false resets from switching noise on supply lines |
Pinout & Package
MAX6386XS16D1+ is housed in a RoHS-compliant 4-pin SC70 package (package code X4+1), measuring 2.0mm × 2.1mm × 0.95mm, with 0.65mm pin pitch and exposed pad option not present. Pin 1 is RESET, Pin 2 is VCC, Pin 3 is GND, Pin 4 is MR.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (RESET) | Open-drain active-low reset output | Asserts low during power failure or MR activation; requires external pullup resistor (typically 10kΩ–100kΩ) to host supply rail |
| Pin 2 (VCC) | Main supply and monitored voltage input | Provides operating power and serves as primary reset trigger source; accepts 1.0V–5.5V with guaranteed functionality down to 1V |
| Pin 3 (GND) | Analog/digital ground reference | Common return path for internal comparators and reset timer; must be low-impedance and directly connected to system ground plane |
| Pin 4 (MR) | Active-low manual reset input | Drives reset when pulled low; internally pulled up to VCC via 63kΩ resistor; supports TTL/CMOS logic and momentary switch interfaces |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 1.58V with ±2.5% accuracy over full temperature range - eliminates external resistor divider and calibration overhead |
| Ultra-low quiescent current | 3μA at 1.8V - extends battery life in always-on monitoring applications without sacrificing reset reliability |
| Guaranteed reset validity | RESET state remains valid down to VCC = 1V - prevents undefined microcontroller behavior during deep undervoltage events |
| Integrated MR debounce | No external RC network required - internal 1µs pulse-width filter rejects contact bounce and EMI on manual reset lines |
| SC70-4 footprint | 2.0mm × 2.1mm body size - enables high-density PCB layouts in portable medical devices and compact industrial modules |
| Transient immunity | Withstands 35µs negative VCC glitches at 100mV overdrive - reduces need for additional input filtering in noisy power environments |
Applications
| Industrial PLC Controller | Battery-Powered Sensor Node |
|---|---|
Use Scenario: Power cycling and brownout recovery in DIN-rail mounted programmable logic controllers operating in factory-floor environments with fluctuating 24VDC supplies. IC Role / Device Role / Timing Role: Primary VCC supervisor generating clean, timed reset pulse to ARM Cortex-M7 MCU upon 24V-to-3.3V LDO output dip below 1.58V. Use Value: 1ms minimum timeout ensures full initialization of flash memory and peripheral clocks before firmware execution resumes. |
Use Scenario: Long-life environmental sensor node powered by CR2032 coin cell, transmitting temperature/humidity data every 5 minutes via BLE. IC Role / Device Role / Timing Role: Single-supply monitor for 3.0V regulated rail, asserting reset if battery voltage drops below 1.58V during cold-weather operation. Use Value: 3μA supply current extends operational lifetime beyond 5 years while maintaining deterministic reset behavior at end-of-battery life. |
| Medical Wearable Monitor | Automotive Body Control Module |
Use Scenario: ECG patch device with ultra-low-power analog front-end and Bluetooth LE radio, subject to mechanical shock-induced power interruptions. IC Role / Device Role / Timing Role: Reset generator triggered by both VCC sag and user-initiated MR (via capacitive touch button), ensuring safe state recovery after drop-induced supply glitch. Use Value: Open-drain RESET allows shared reset bus with other subsystems; MR internal pullup eliminates BOM cost and layout area for discrete resistor. |
Use Scenario: Dashboard cluster module requiring AEC-Q100 compliance and immunity to load-dump transients on 12V supply rail. IC Role / Device Role / Timing Role: Secondary supervisor monitoring 3.3V domain derived from buck converter, asserting reset if output falls below 1.58V due to converter fault or ESD event. Use Value: ±2.5% threshold accuracy over –40°C to +125°C ensures consistent trip point across vehicle thermal zones without software compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD1+T | Fixed 3.08V reset threshold, no MR input, SOT23-3 package | Lacks manual reset and low-voltage support; suitable only for 3.3V systems without user-initiated reset | Select when board space permits SOT23-3 and system requires higher threshold without MR functionality |
| TPS3808G01DBVR | Adjustable threshold via external resistor divider, 200ms min timeout, SOT23-6 package | Requires external components for threshold setting; longer timeout limits use in fast-booting applications | Choose when design flexibility for custom reset voltage outweighs BOM simplification and 1ms timing requirement |
Compared with MAX6386XS16D1+, MAX809TRD1+T offers smaller footprint but lacks MR and low-threshold capability, while TPS3808G01DBVR provides adjustability at the cost of added components and slower reset deassertion - making MAX6386XS16D1+ optimal for compact, battery-sensitive 1.8V/2.5V systems needing guaranteed 1ms reset hold and integrated MR.
Availability
MAX6386XS16D1+ is available at Aetrix Electronics and suitable for industrial PLC controllers, battery-powered sensor nodes, medical wearable monitors, automotive body control modules, and compact embedded instrumentation requiring stable component supply and long-term lifecycle support.
Supply support for MAX6386XS16D1+ 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 demanding industrial, automotive, and computing applications, with emphasis on low-power, high-reliability solutions.
The MAX6381–MAX6390 family delivers single/dual low-voltage microprocessor supervisory circuits optimized for space-constrained, battery-operated, and thermally harsh environments where deterministic reset timing and minimal quiescent current are critical.
FAQ
What is the exact reset threshold voltage of MAX6386XS16D1+ and how stable is it over temperature?
The MAX6386XS16D1+ has a factory-set nominal reset threshold of 1.58V, with guaranteed tolerance of ±2.5% over the full operating temperature range of –40°C to +125°C. Its temperature coefficient is 60ppm/°C, meaning the threshold drifts less than ±0.3% across the entire range - ensuring predictable reset behavior in automotive under-hood and industrial control cabinet deployments. This specification is validated per Maxim's production test flow and documented in the Electrical Characteristics table of the MAX6386XS16D1+ datasheet.
Does MAX6386XS16D1+ require an external pullup resistor on the RESET pin, and what value is recommended?
Yes, MAX6386XS16D1+ features an open-drain active-low RESET output and requires an external pullup resistor to the host supply rail (e.g., 3.3V or 5V). A value between 10kΩ and 100kΩ is recommended: lower values improve noise immunity and rise time but increase static current; higher values reduce current consumption but may slow edge transitions in high-capacitance buses. The MAX6386XS16D1+ datasheet specifies VOL ≤ 0.3V at ISINK = 1.2mA (VCC ≥ 2.5V), confirming compatibility with standard pullup configurations used in μP reset networks.
Can MAX6386XS16D1+ operate reliably when VCC drops below 1.8V, and down to what voltage does it guarantee correct reset output state?
Yes, MAX6386XS16D1+ is fully specified to operate down to VCC = 1.0V, and its RESET output state is guaranteed valid (i.e., correctly asserted or deasserted) at all VCC levels ≥ 1.0V. This is confirmed in the Absolute Maximum Ratings and Electrical Characteristics sections of the MAX6386XS16D1+ datasheet, which specify "RESET Output State Guaranteed Valid Down to VCC = 1V". Below 1.0V, the device ceases functional operation, but the 1V guarantee ensures deterministic reset signaling through deep brownout conditions common in lithium coin-cell and supercapacitor backup scenarios.
What is the function of the MR pin on MAX6386XS16D1+, and does it require external components?
The MR (Manual Reset) pin on MAX6386XS16D1+ is an active-low input that forces a reset when pulled below 0.3×VCC. It includes an internal 63kΩ pullup resistor to VCC, so no external pullup is needed - a normally open momentary switch from MR to GND suffices for user-initiated reset. The MAX6386XS16D1+ datasheet confirms MR supports TTL/CMOS logic levels and specifies 1µs minimum pulse width and 100ns glitch rejection, eliminating need for external debounce circuitry in most applications. This integration reduces BOM count and PCB area versus alternatives requiring discrete resistors or RC filters.
Is MAX6386XS16D1+ pin-compatible with older Maxim reset ICs like MAX809, and what are the key mechanical differences?
MAX6386XS16D1+ is functionally compatible but not pin-compatible with MAX809 series devices. While both provide reset supervision, MAX6386XS16D1+ uses a 4-pin SC70 package (pins: RESET, VCC, GND, MR), whereas MAX809 uses a 3-pin SOT23 package (RESET, VCC, GND) without MR. The SC70-4 footprint (2.0mm × 2.1mm) differs mechanically from SOT23 (2.9mm × 1.6mm), requiring PCB layout revision. However, the MAX6386XS16D1+ datasheet explicitly states pin compatibility with MAX809/MAX810/MAX803 families *in function*, not physical layout - meaning system-level redesign is needed to leverage MR and low-threshold advantages of MAX6386XS16D1+.
MAX6386XS16D1+ 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:
- 1.58V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6386XS16D1+ FAQ
1.How can I place an order for MAX6386XS16D1+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6386XS16D1+ 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 MAX6386XS16D1+ reliable?
The price and inventory of MAX6386XS16D1+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6386XS16D1+ is usually 5 days.
3.What payment methods are accepted for MAX6386XS16D1+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6386XS16D1+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6386XS16D1+?
MAX6386XS16D1+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6386XS16D1+ 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 MAX6386XS16D1+?
For technical support, including MAX6386XS16D1+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6386XS16D1+ requirements.
6.How does Aetrix verify that MAX6386XS16D1+ is sourced from the original manufacturer or authorized distributors?
All MAX6386XS16D1+ 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 MAX6386XS16D1+ meets industry standards.
7.What is the process for return or replacement of MAX6386XS16D1+?
All MAX6386XS16D1+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX6386XS16D1+, 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 MAX6386XS16D1+ part is unused and in its original packaging.
Return procedure for MAX6386XS16D1+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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