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Analog Devices Inc./Maxim Integrated MAX6383XR26D3+T
- Part No.:
- MAX6383XR26D3+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6383XR26D3+T.pdf
- Description:
- IC MPU/RESET CIRC 2.63V SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MAX6383XR26D3+T from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 2.63V reset threshold (±2.5% over -40°C to +125°C), and 140ms minimum reset timeout period. It monitors VCC from +1.8V to +5.0V while consuming 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 MAX6383XR26D3+T datasheet, MAX6383XR26D3+T pinout, MAX6383XR26D3+T application, or MAX6383XR26D3+T equivalent, key selection criteria include its 2.63V reset threshold accuracy, 140ms timeout, open-drain output requiring external pullup, SC70-3 package footprint, and compatibility with systems requiring guaranteed reset assertion during VCC decay below 1V.
Technical Context
The MAX6383XR26D3+T implements a precision voltage comparator with internal 2.63V reference and hysteresis-free threshold detection, coupled to a monolithic timer that enforces a minimum 140ms reset assertion after VCC recovery. Its open-drain RESET output requires an external pullup resistor and supports bidirectional level-shifting across voltage domains.
It operates across full industrial temperature range (-40°C to +125°C) with ±2.5% reset threshold accuracy and exhibits negative-going VCC transient immunity up to 35µs at 100mV overdrive. Supply current remains stable at 3μA (typ) at +1.8V and increases to 6μA (typ) at +3.6V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.63V (nominal), ±2.5% over -40°C to +125°C - ensures accurate brownout detection across automotive/industrial environments |
| Reset Timeout Period | 140ms (minimum) - guarantees sufficient μP initialization time before release |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors |
| Operating Voltage Range | +1.0V to +5.5V - supports valid reset assertion down to near-dead-battery conditions |
| Output Type | Open-drain active-low - allows wired-OR configuration and level translation with external pullup |
| Package | 3-pin SC70 (X3+2 outline) - 1.25mm × 0.85mm footprint for space-constrained portable designs |
| Temperature Range | -40°C to +125°C - qualified for under-hood and industrial control applications |
Pinout & Package
MAX6383XR26D3+T is housed in a 3-pin SC70 package (outline 21-0075, land pattern 90-0208), with pins arranged in standard top-view orientation: Pin 1 = RESET (open-drain active-low), Pin 2 = VCC, Pin 3 = GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Open-drain active-low reset output | Must be pulled up externally; asserts low during VCC undervoltage or brownout; compatible with 1.8V–5V logic domains |
| 2 - VCC | Power supply input and monitored rail | Supplies device and serves as primary reset trigger; accepts 1.0V–5.5V; supports operation down to 1V with valid output state |
| 3 - GND | Ground reference | Common return path for internal comparators and output stage; must be low-impedance for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.63V with ±2.5% tolerance over full temperature range - eliminates external resistor network and calibration effort |
| Ultra-low quiescent current | 3μA at +1.8V - extends battery life in always-on monitoring nodes without compromising supervision integrity |
| Guaranteed reset validity | RESET output state defined down to VCC = 1V - prevents spurious release during deep brownout recovery |
| Negative-going transient immunity | Rejects VCC glitches ≤35µs at 100mV overdrive - avoids false resets in electrically noisy environments |
| Small-footprint packaging | 3-pin SC70 (1.25mm × 0.85mm) - saves PCB area in wearables, medical patches, and compact modules |
Applications
| Portable Medical Sensors | Battery-Powered IoT Endpoints |
|---|---|
Use Scenario: Continuous glucose monitor powered by CR2032 coin cell operating in ambient temperatures from 0°C to 45°C. IC Role / Device Role / Timing Role: Supervises VCC decay during battery discharge and asserts reset before MCU enters undefined state. Use Value: 2.63V threshold aligns with typical LiMnO₂ end-of-life voltage; 140ms timeout exceeds MSP430 wake-up + BOR stabilization time. |
Use Scenario: LoRaWAN soil moisture node deployed outdoors with seasonal temperature swings (-20°C to +60°C). IC Role / Device Role / Timing Role: Detects brownout during cold-start and ensures ESP32 completes flash initialization before releasing reset. Use Value: ±2.5% threshold accuracy over temperature prevents premature reset release in sub-zero conditions; 3μA ICC minimizes self-discharge. |
| Industrial Control HMI Panels | Automotive Body Controller Modules |
Use Scenario: ARM Cortex-M4-based touch HMI panel powered from 3.3V LDO with intermittent 12V supply dips. IC Role / Device Role / Timing Role: Monitors 3.3V rail and holds reset during 12V transients that cause LDO dropout. Use Value: Open-drain output interfaces directly to 3.3V GPIO with 10kΩ pullup; 140ms timeout accommodates worst-case LDO recovery latency. |
Use Scenario: CAN-connected door module exposed to load-dump and cold-crank events per ISO 7637-2. IC Role / Device Role / Timing Role: Provides fail-safe reset during VCC sag below 2.63V during cranking, independent of main SoC supervisor. Use Value: -40°C to +125°C rating matches AEC-Q100 Grade 2 requirements; SC70 package withstands reflow and thermal cycling. |
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 2.63V threshold and 140ms timeout, but push-pull active-low output; higher ICC (12μA typ at +3.6V) | Requires no external pullup; less suitable for level-shifted or wired-OR bus configurations | Select when board layout prohibits external pullup or when driving high-capacitance reset lines directly |
| TPS3808G33DBVR | 2.93V threshold (not 2.63V); 200ms timeout (not 140ms); 1.8V–6.0V VCC range; 1.6μA ICC at +3.3V | Higher threshold better suited for 3.3V systems with tighter margin; longer timeout may delay system boot | Select when 2.93V detection aligns with system brownout point and lower ICC outweighs timing mismatch |
Compared with MAX809TRD3+T, MAX6383XR26D3+T offers lower power and open-drain flexibility at the cost of external component count; compared with TPS3808G33DBVR, it provides tighter threshold match for 2.6V-core systems and faster release timing critical in low-latency sensor nodes.
Availability
MAX6383XR26D3+T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered IoT endpoints, industrial control HMI panels, and automotive body controller modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6383XR26D3+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 power management, sensing, and interface applications, with emphasis on reliability and low-power operation.
The MAX6381–MAX6390 family delivers single-supply microprocessor supervisory circuits optimized for space-constrained, battery-sensitive, and thermally demanding applications where guaranteed reset behavior and minimal quiescent current are essential.
FAQ
What is the exact reset threshold voltage of MAX6383XR26D3+T and how stable is it over temperature?
The MAX6383XR26D3+T has a nominal reset threshold of 2.63V, with guaranteed accuracy of ±2.5% over the full operating temperature range of -40°C to +125°C. This stability is achieved via laser-trimmed on-chip references and BiCMOS process design, ensuring consistent brownout detection without external calibration. The MAX6383XR26D3+T maintains this specification across all production lots and environmental stresses.
Does MAX6383XR26D3+T support manual reset functionality?
No, MAX6383XR26D3+T does not include a manual reset (MR) input. It belongs to the MAX6381/MAX6382/MAX6383 subgroup, which lacks MR capability. Manual reset is only available on MAX6384–MAX6390 variants (e.g., MAX6384XR26D3+T). The MAX6383XR26D3+T relies solely on VCC monitoring for reset assertion and does not provide an external MR pin.
What package type and dimensions does MAX6383XR26D3+T use?
MAX6383XR26D3+T uses a 3-pin SC70 package (outline number 21-0075, land pattern 90-0208), measuring 1.25mm × 0.85mm with 0.65mm pitch. This RoHS-compliant, lead(Pb)-free package is optimized for high-density PCB layouts in portable electronics. The MAX6383XR26D3+T pinout is fixed: Pin 1 = RESET (open-drain), Pin 2 = VCC, Pin 3 = GND.
Can MAX6383XR26D3+T operate reliably below 1.8V supply voltage?
Yes, MAX6383XR26D3+T is fully specified to operate down to VCC = 1.0V, with guaranteed reset output validity (correct logic state) at VCC ≥ 1V. At 1.0V, ICC is ~3.5μA (typ), and the 2.63V threshold detector remains functional due to internal charge-pump-assisted reference generation. The MAX6383XR26D3+T thus supports ultra-low-voltage brownout detection in energy-harvesting and near-dead-battery scenarios.
Is MAX6383XR26D3+T pin-compatible with older Maxim reset ICs like MAX809?
MAX6383XR26D3+T is not pin-compatible with MAX809 series devices. While both are 3-pin SC70 reset supervisors, MAX809 uses Pin 1 = VCC, Pin 2 = GND, Pin 3 = RESET (push-pull), whereas MAX6383XR26D3+T uses Pin 1 = RESET (open-drain), Pin 2 = VCC, Pin 3 = GND. Swapping them requires PCB redesign. The MAX6383XR26D3+T is pin-compatible only with other MAX6381/MAX6382/MAX6383 variants in the same SC70-3 package.
MAX6383XR26D3+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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.63V
- 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
MAX6383XR26D3+T FAQ
1.How can I place an order for MAX6383XR26D3+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383XR26D3+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 MAX6383XR26D3+T reliable?
The price and inventory of MAX6383XR26D3+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383XR26D3+T is usually 5 days.
3.What payment methods are accepted for MAX6383XR26D3+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383XR26D3+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383XR26D3+T?
MAX6383XR26D3+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383XR26D3+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 MAX6383XR26D3+T?
For technical support, including MAX6383XR26D3+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383XR26D3+T requirements.
6.How does Aetrix verify that MAX6383XR26D3+T is sourced from the original manufacturer or authorized distributors?
All MAX6383XR26D3+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 MAX6383XR26D3+T meets industry standards.
7.What is the process for return or replacement of MAX6383XR26D3+T?
All MAX6383XR26D3+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383XR26D3+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 MAX6383XR26D3+T part is unused and in its original packaging.
Return procedure for MAX6383XR26D3+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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