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Analog Devices Inc./Maxim Integrated MAX6383XR30D3+T
- Part No.:
- MAX6383XR30D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6383XR30D3+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,371
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Product details
Overview
MAX6383XR30D3+T from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 3.00V ±2.5% reset threshold, and 140ms minimum reset timeout period. It monitors VCC from +1.8V to +5.5V while drawing only 3μA at +1.8V and guarantees valid reset state down to VCC = 1V. It is used in portable battery-powered equipment for reliable power-on reset and brownout protection.
For engineers reviewing the MAX6383XR30D3+T datasheet, MAX6383XR30D3+T pinout, MAX6383XR30D3+T application, or MAX6383XR30D3+T equivalent, key selection criteria include open-drain reset compatibility with shared bus lines, 3.00V threshold accuracy over –40°C to +125°C, 140ms timeout for stable processor initialization, and SC70-3 package suitability for space-constrained designs.
Technical Context
The MAX6383XR30D3+T implements a precision voltage comparator with ±2.5% threshold accuracy across –40°C to +125°C and a monolithic timer generating a guaranteed-minimum 140ms reset assertion after VCC recovery. Its open-drain RESET output requires an external pullup resistor and supports wired-OR configurations in multi-rail systems.
Unlike push-pull variants, this device lacks manual reset (MR) and auxiliary RESET IN inputs-its functionality is limited to single-supply VCC monitoring with fixed 3.00V threshold and D3 (140ms) timeout. It operates down to VCC = 1.0V, ensuring deterministic reset behavior during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.00V ±2.5% (–40°C to +125°C); ensures reliable detection of 3.3V rail undervoltage without false triggering |
| Reset Timeout Period | 140ms minimum; provides sufficient hold time for microcontrollers to complete internal initialization after power-up |
| Supply Current | 3μA at +1.8V; enables multi-year operation in coin-cell–powered IoT sensors and wearables |
| Operating Voltage Range | +1.0V to +5.5V; supports valid reset assertion even during severe brownout down to 1V supply |
| Output Type | Open-drain active-low; allows direct connection to shared reset buses with pullup to any logic voltage (e.g., 1.8V, 3.3V, or 5V) |
| Reset Propagation Delay | 35μs (VCC falling at 10mV/µs); fast response to rapid supply collapse prevents processor runaway |
| Package | 3-pin SC70 (X3+2 outline); 1.25mm × 0.85mm footprint ideal for ultra-compact PCB layouts |
Pinout & Package
MAX6383XR30D3+T is housed in a RoHS-compliant 3-pin SC70 package (outline 21-0075, land pattern 90-0208), with 0.65mm pitch and exposed pad not connected internally.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (open-drain) | Active-low reset output requiring external pullup; sinks up to 3.2mA at VCC ≥ 4.5V; leakage < 1.0μA when deasserted |
| 2 | VCC | Primary supply input and monitored voltage rail; accepts +1.0V to +5.5V; powers internal comparator and timer |
| 3 | GND | Analog and digital ground reference; must be low-impedance connection to minimize noise-induced reset glitches |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 3.00V threshold | Eliminates external resistor divider and calibration effort for 3.3V system monitoring |
| ±2.5% threshold accuracy over temperature | Guarantees no spurious resets across automotive and industrial ambient ranges (–40°C to +125°C) |
| 140ms minimum reset timeout | Meets JEDEC JESD72B requirements for microcontroller power-on stabilization in embedded applications |
| 3μA supply current at 1.8V | Reduces quiescent power by >50% versus legacy reset ICs, extending battery life in always-on edge nodes |
| Valid reset down to VCC = 1.0V | Ensures deterministic processor reset even during deep brownout events before full rail collapse |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered glucose meters and pulse oximeters require fail-safe reset during cold-start and low-battery brownout. IC Role / Device Role / Timing Role: MAX6383XR30D3+T monitors the 3.3V analog front-end supply and asserts open-drain RESET to the MCU until stable. Use Value: 3μA quiescent current extends single-CR2032 battery life beyond 5 years; 140ms timeout ensures ADC calibration completes before firmware execution. |
Use Scenario: DIN-rail mounted PLC modules operate in wide-temperature industrial cabinets with noisy 24V DC-DC converters. IC Role / Device Role / Timing Role: MAX6383XR30D3+T supervises the isolated 3.3V logic rail derived from 24V input, providing immunity to negative transients. Use Value: ±2.5% threshold tolerance prevents false resets from converter ripple; open-drain output interfaces directly to optocoupled reset chains. |
| Automotive Body Control Units | Wireless Sensor Nodes |
Use Scenario: BCMs use 3.3V microcontrollers powered from switched 5V rails subject to load-dump transients and cold-crank undervoltage. IC Role / Device Role / Timing Role: MAX6383XR30D3+T detects VCC drop below 3.00V and holds RESET asserted for 140ms after recovery to prevent firmware corruption. Use Value: Valid operation down to VCC = 1.0V ensures reset integrity during cranking (battery dips to ~6V → 3.3V rail collapses to ~1.2V). |
Use Scenario: LoRaWAN soil moisture sensors deployed outdoors rely on CR123A batteries and must survive 10-year deployments with zero maintenance. IC Role / Device Role / Timing Role: MAX6383XR30D3+T provides power-on reset and brownout protection for the ARM Cortex-M0+ MCU during wake-from-sleep cycles. Use Value: SC70-3 package minimizes board area; 3μA ICC enables >10-year shelf life and field operation without periodic battery replacement. |
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 3.00V threshold and 140ms timeout, but push-pull active-low output; no open-drain capability | Requires dedicated reset line; incompatible with wired-OR bus topologies | Select when board layout uses point-to-point reset routing and avoids shared buses |
| TPS3808G30DBVR | 3.0V threshold with ±0.5% accuracy, 200ms timeout, SOT-23-5 package; includes manual reset input | Offers higher precision and MR function but larger footprint and higher 8μA ICC | Select when tighter threshold tolerance or operator-initiated reset is required despite higher cost and size |
Compared with MAX809TRD3+T, MAX6383XR30D3+T enables shared reset busing via open-drain topology; compared with TPS3808G30DBVR, it trades precision and MR for ultra-low power and minimal footprint-critical for battery longevity and miniaturized designs.
Availability
MAX6383XR30D3+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 long-term lifecycle support.
Supply support for MAX6383XR30D3+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 demanding industrial, automotive, and computing applications, with emphasis on low-power, high-reliability solutions.
The MAX6381–MAX6390 family delivers single/dual low-voltage microprocessor reset circuits optimized for battery-powered and thermally harsh environments where supply stability and minimal quiescent current are critical.
FAQ
What is the exact reset threshold voltage of MAX6383XR30D3+T and how accurate is it over temperature?
The MAX6383XR30D3+T has a factory-set nominal reset threshold of 3.00V, with guaranteed accuracy of ±2.5% over the full operating temperature range of –40°C to +125°C. At +25°C, the threshold is specified as 2.93V (min) to 3.08V (max). This tolerance ensures robust operation in automotive and industrial applications where supply rails exhibit significant thermal drift.
Does MAX6383XR30D3+T support manual reset functionality?
No, MAX6383XR30D3+T does not include a manual reset (MR) input. It is a dedicated single-supply reset monitor with open-drain active-low RESET output only. Manual reset capability is present only in MAX6384–MAX6386 and MAX6390 variants-not in MAX6383 or its SC70-3 configuration.
What package type and dimensions does MAX6383XR30D3+T use?
MAX6383XR30D3+T is supplied in a 3-pin SC70 package (outline number 21-0075, land pattern 90-0208), measuring 1.25mm × 0.85mm with 0.65mm pin pitch. The package is RoHS-compliant (+ suffix), lead-free, and features an unconnected exposed pad.
Can MAX6383XR30D3+T monitor a second voltage rail like VIO or VCORE?
No, MAX6383XR30D3+T monitors only the VCC supply pin. Auxiliary voltage monitoring via RESET IN is exclusive to MAX6387–MAX6389 variants. The MAX6383 series lacks both RESET IN and MR pins-its functionality is strictly single-rail VCC supervision with fixed threshold and timeout.
What is the minimum supply voltage at which MAX6383XR30D3+T guarantees correct reset output behavior?
MAX6383XR30D3+T guarantees valid RESET output logic state down to VCC = 1.0V. Below this, the internal comparator and timer may become indeterminate. This feature ensures reliable reset assertion during deep brownout events common in battery-powered systems approaching end-of-life.
MAX6383XR30D3+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:
- 3V
- 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-70-3
MAX6383XR30D3+T FAQ
1.How can I place an order for MAX6383XR30D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383XR30D3+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 MAX6383XR30D3+T reliable?
The price and inventory of MAX6383XR30D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383XR30D3+T is usually 5 days.
3.What payment methods are accepted for MAX6383XR30D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383XR30D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383XR30D3+T?
MAX6383XR30D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383XR30D3+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 MAX6383XR30D3+T?
For technical support, including MAX6383XR30D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383XR30D3+T requirements.
6.How does Aetrix verify that MAX6383XR30D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6383XR30D3+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 MAX6383XR30D3+T meets industry standards.
7.What is the process for return or replacement of MAX6383XR30D3+T?
All MAX6383XR30D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383XR30D3+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 MAX6383XR30D3+T part is unused and in its original packaging.
Return procedure for MAX6383XR30D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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