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Analog Devices Inc./Maxim Integrated MAX6385XS17D1-T
- Part No.:
- MAX6385XS17D1-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS17D1-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,540
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Product details
Overview
MAX6385XS17D1-T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit with factory-set 1.67V reset threshold, 140ms minimum reset timeout, and manual reset input (MR), designed for low-power voltage monitoring in battery-powered embedded systems where reliable power-on reset and brownout protection are critical.
For engineers reviewing the MAX6385XS17D1-T datasheet, MAX6385XS17D1-T pinout, MAX6385XS17D1-T application, or MAX6385XS17D1-T equivalent, key selection considerations include its 4-pin SC70 package, guaranteed reset assertion down to VCC = 1V, ±2.5% threshold accuracy over –40°C to +125°C, and integrated MR pullup resistor (63kΩ).
Technical Context
The MAX6385XS17D1-T implements a precision bandgap-based voltage comparator monitoring VCC against a fixed 1.67V threshold, with internal timer logic enforcing a 140ms minimum reset assertion period after VCC recovery. Its active-high push-pull RESET output drives high during fault conditions and deasserts cleanly upon timeout completion.
It features a debounced manual reset input (MR) with internal 63kΩ pullup to VCC, supporting TTL/CMOS-compatible triggering and requiring no external debounce circuitry. The device operates across 1.0V to 5.5V supply range while consuming only 3μA at 1.8V, enabling use in ultra-low-power applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 1.67V (nominal), ±2.5% over –40°C to +125°C - ensures accurate brownout detection across automotive and industrial temperature ranges. |
| Reset Timeout | 140ms (minimum) - guarantees sufficient processor initialization time after power stabilization. |
| 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 interface with 1.2V, 1.8V, 2.5V, 3.3V, and 5V logic domains without level shifting. |
| RESET Output Type | Active-high push-pull - eliminates need for external pullup resistor and provides strong drive capability (800µA source / 1.2mA sink). |
| MR Input Pullup | 63kΩ internal resistor - simplifies manual reset implementation with momentary switch to GND; no external components required. |
| VCC Immunity | Valid RESET state guaranteed down to VCC = 1V - ensures deterministic reset behavior during deep brownout or battery depletion. |
Pinout & Package
MAX6385XS17D1-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, optimized for space-constrained portable designs.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Primary power supply input and monitored voltage rail; powers internal circuitry and serves as reference for reset threshold detection. |
| 2 | RESET | Active-high push-pull output; driven high during reset assertion (VCC < 1.67V or MR low), low otherwise; compatible with standard μP reset inputs. |
| 3 | MR | Active-low manual reset input; internally pulled up to VCC via 63kΩ resistor; pulling low forces immediate reset and holds it for 140ms after release. |
| 4 | GND | Analog and digital ground reference; must be connected to system ground plane for stable comparator operation and noise immunity. |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 1.67V with ±2.5% tolerance over full temperature range - eliminates need for external resistor dividers or calibration. |
| Guaranteed operation down to VCC = 1V | Ensures valid RESET logic levels even during severe brownout, preventing undefined processor states. |
| Integrated MR pullup resistor | 63kΩ internal pullup enables single-switch manual reset without external components or risk of floating input. |
| Negative-going VCC transient immunity | Rejects short-duration supply glitches (e.g., <1µs at 100mV overdrive) - improves system robustness in noisy environments. |
| Low quiescent current | 3μA at 1.8V - extends battery life in always-on monitoring applications such as smart meters and medical patches. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell with 1.8V MCU core and analog front-end. IC Role / Device Role / Timing Role: Supervises VCC rail to detect battery sag below 1.67V and asserts active-high RESET to halt firmware execution before data corruption occurs. Use Value: 140ms timeout ensures ADC calibration completes before MCU resumes; 3μA supply current enables >5-year battery life. |
Use Scenario: DIN-rail mounted programmable logic controller with isolated 24V DC input and 3.3V logic domain. IC Role / Device Role / Timing Role: Monitors 3.3V supply derived from DC-DC converter, asserting RESET on undervoltage to prevent spurious I/O toggling during power-up. Use Value: ±2.5% threshold accuracy over –40°C to +125°C guarantees reliable operation in uncontrolled cabinet environments. |
| Automotive Body Control Units | Wireless Sensor Nodes |
Use Scenario: Door module with LIN transceiver, MCU, and LED drivers operating from vehicle battery (9V–16V) via 3.3V LDO. IC Role / Device Role / Timing Role: Provides AEC-Q100–compliant reset supervision for the 3.3V rail, interfacing directly with MCU's active-high reset pin. Use Value: 4-pin SC70 footprint minimizes PCB area; MR pin allows service-mode forced reset via diagnostic tool without reprogramming. |
Use Scenario: Sub-GHz LoRaWAN node powered by solar harvester and supercapacitor, with intermittent 1.8V supply. IC Role / Device Role / Timing Role: Detects VCC collapse during energy harvesting gaps and triggers clean restart of RF stack and sensor fusion firmware. Use Value: Valid RESET down to VCC = 1V prevents latch-up during capacitor discharge phase; 140ms timeout aligns with typical BLE/Wi-Fi wake-up sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6385XS17D3-T | Same 1.67V threshold and 4-pin SC70 package, but 280ms reset timeout (vs. 140ms) | Suitable for systems requiring longer processor initialization or slower power-rail settling | Select when extended reset hold time is needed for complex boot sequences or high-capacitance supplies. |
| TPS3123E16DBVR | Texas Instruments part with 1.6V threshold, 200ms timeout, SOT-23-4 package, and 1.6μA supply current at 1.8V | Lacks manual reset input (MR); uses open-drain active-low RESET output requiring external pullup | Choose for ultra-low-power applications where MR is unnecessary and board layout accommodates pullup resistor. |
Compared with MAX6385XS17D1-T, the MAX6385XS17D3-T extends reset duration for demanding power-up sequencing, while the TPS3123E16DBVR reduces current draw but sacrifices MR functionality and requires external biasing - making MAX6385XS17D1-T optimal for compact, feature-complete reset supervision.
Availability
MAX6385XS17D1-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and wireless sensor nodes requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6385XS17D1-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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, communications, and computing markets.
The MAX6381–MAX6390 family was designed specifically for low-voltage, low-power microprocessor reset supervision in space- and energy-constrained applications, emphasizing precision threshold accuracy, minimal quiescent current, and robust glitch immunity.
FAQ
What is the exact reset threshold voltage of the MAX6385XS17D1-T?
The MAX6385XS17D1-T has a factory-set nominal reset threshold of 1.67V, with guaranteed tolerance of ±2.5% over the full operating temperature range (–40°C to +125°C). This value is confirmed in the Reset Thresholds table of the datasheet, where suffix "17" corresponds to VTH(nom) = 1.67V, VTH(min) = 1.62V, and VTH(max) = 1.71V.
Does the MAX6385XS17D1-T support manual reset functionality?
Yes, the MAX6385XS17D1-T includes a dedicated MR (manual reset) pin with an internal 63kΩ pullup resistor to VCC. Driving MR low forces an immediate active-high RESET assertion, which remains active for the full 140ms timeout period after MR is released. This feature is explicitly documented in the Pin Description and Features sections of the MAX6385XS17D1-T datasheet.
What package type and dimensions does the MAX6385XS17D1-T use?
The MAX6385XS17D1-T is supplied in a 4-pin SC70 package (outline number 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm. This RoHS-compliant, lead-free package is confirmed in the Ordering Information table and Package Information section of the official datasheet.
Can the MAX6385XS17D1-T operate reliably at very low supply voltages?
Yes, the MAX6385XS17D1-T guarantees correct RESET output logic state down to VCC = 1.0V, as specified in the Absolute Maximum Ratings and Detailed Description sections. This ensures deterministic reset behavior during deep brownout conditions, unlike many competitors that fail to assert reset below 1.5V.
How does the reset timeout timing work for the MAX6385XS17D1-T?
The MAX6385XS17D1-T provides a minimum reset timeout of 140ms (suffix D3), meaning RESET remains asserted for at least 140ms after VCC rises above 1.67V or after MR is released. This timing is factory-trimmed and guaranteed over temperature, as detailed in the Reset Timeout Delay table and Electrical Characteristics section of the MAX6385XS17D1-T datasheet.
MAX6385XS17D1-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:
- 1.67V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6385XS17D1-T FAQ
1.How can I place an order for MAX6385XS17D1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS17D1-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 MAX6385XS17D1-T reliable?
The price and inventory of MAX6385XS17D1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS17D1-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS17D1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS17D1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS17D1-T?
MAX6385XS17D1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS17D1-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 MAX6385XS17D1-T?
For technical support, including MAX6385XS17D1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS17D1-T requirements.
6.How does Aetrix verify that MAX6385XS17D1-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS17D1-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 MAX6385XS17D1-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS17D1-T?
All MAX6385XS17D1-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS17D1-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 MAX6385XS17D1-T part is unused and in its original packaging.
Return procedure for MAX6385XS17D1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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