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Analog Devices Inc./Maxim Integrated MAX6383XR24D2+T
- Part No.:
- MAX6383XR24D2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6383XR24D2+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,186
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Product details
Overview
MAX6383XR24D2+T from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 2.40V ±2.5% reset threshold, and 20ms 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 MAX6383XR24D2+T datasheet, MAX6383XR24D2+T pinout, MAX6383XR24D2+T application, or MAX6383XR24D2+T equivalent, key selection criteria include reset threshold accuracy over temperature (±2.5% from −40°C to +125°C), open-drain output compatibility with mixed-voltage systems, 20ms timeout suitability for fast-boot microcontrollers, and SC70-3 package constraints for space-constrained PCB layouts.
Technical Context
The MAX6383XR24D2+T implements a precision voltage comparator with internal 2.40V reference and hysteresis-free threshold detection. Its reset assertion is triggered when VCC falls below 2.40V, followed by a fixed 20ms timeout after VCC recovers above threshold - no external timing components required.
This device belongs to the MAX6381–MAX6390 family of single-supply supervisors and uses BiCMOS process technology. It features negative-going VCC transient immunity up to 35µs for 100mV overdrive and guarantees reset output validity down to VCC = 1V, enabling robust operation during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.40V ±2.5% over −40°C to +125°C - ensures consistent reset activation across automotive and industrial temperature ranges |
| Reset Timeout Period | 20ms minimum - provides sufficient hold time for 8-bit and 32-bit microcontrollers to complete internal initialization |
| Supply Current | 3μA at +1.8V - enables multi-year battery life in coin-cell–powered IoT sensors and wearables |
| Operating Voltage Range | +1.0V to +5.5V - supports direct monitoring of core rails (1.2V, 1.8V, 3.3V) and I/O supplies without level-shifting |
| Output Type | Open-drain active-low - allows wired-OR configuration with other reset sources and interface with 5V-tolerant logic |
| VCC Transient Immunity | 35µs max duration for 100mV overdrive - suppresses false resets caused by switching noise on shared power rails |
| Reset Output Validity | Down to VCC = 1V - maintains deterministic logic state during deep undervoltage events before shutdown |
Pinout & Package
MAX6383XR24D2+T is housed in a 3-pin SC70 package (outline 21-0075, land pattern 90-0208), measuring 2.0mm × 2.1mm × 0.95mm. This RoHS-compliant, lead-free package supports reflow soldering per JEDEC J-STD-020 and is rated for −40°C to +125°C operation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (open-drain) | Active-low reset signal requiring external pullup; sinks up to 3.2mA at VCC ≥ 4.5V; leakage <1.0μA when deasserted |
| 2 | VCC | Power supply input and monitored voltage rail; accepts 1.0V–5.5V; absolute max rating −0.3V to +6.0V |
| 3 | GND | Analog and digital ground reference; must be connected directly to system ground plane for stable threshold accuracy |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.40V with ±2.5% tolerance over full temperature range - eliminates need for external resistor dividers or calibration |
| Low quiescent current | 3μA at 1.8V - reduces standby power in always-on edge nodes without compromising reset reliability |
| Open-drain reset output | Compatible with 1.8V/3.3V/5V logic families via external pullup - enables flexible system-level reset arbitration |
| Negative VCC transient rejection | 35µs immunity at 100mV overdrive - prevents spurious resets from DC-DC converter switching noise |
| Valid reset down to 1V supply | Ensures deterministic reset assertion during gradual power collapse - critical for data retention in nonvolatile memory systems |
Applications
| Portable Medical Sensors | Battery-Powered Telematics |
|---|---|
|
Use Scenario: Wearable ECG monitor powered by CR2032 coin cell with 1.8V MCU and analog front-end. IC Role / Device Role / Timing Role: Supervises 1.8V VCC rail and asserts open-drain RESET to halt MCU execution during brownout. Use Value: 3μA supply current extends battery life beyond 3 years; 20ms timeout aligns with MSP430FR59xx wake-up sequence. |
Use Scenario: GPS tracker in automotive OBD-II dongle with dual 3.3V/5V supplies and CAN transceiver. IC Role / Device Role / Timing Role: Monitors 3.3V logic rail and drives shared reset bus via open-drain output. Use Value: 2.40V threshold avoids false triggers during cold-cranking voltage dips; 35µs transient immunity rejects alternator noise. |
| Industrial PLC I/O Modules | Smart Home Hub Controllers |
|
Use Scenario: DIN-rail mounted I/O module with isolated 24V-to-3.3V DC-DC and ARM Cortex-M4 processor. IC Role / Device Role / Timing Role: Provides power-on reset and brownout detection for main controller supply. Use Value: ±2.5% threshold accuracy ensures reliable operation across −40°C to +85°C ambient; SC70-3 footprint saves board space. |
Use Scenario: Wi-Fi/BLE hub with dual-core application processor, PMIC, and multiple voltage domains. IC Role / Device Role / Timing Role: Acts as secondary supervisor for 1.2V core rail, complementing PMIC's primary reset. Use Value: Open-drain output enables OR-ing with PMIC reset signal; 1V minimum VCC operation supports graceful shutdown sequencing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD2+T | 2.63V reset threshold, 240ms timeout, push-pull active-low output | Higher threshold better suited for 3.3V-only systems; longer timeout accommodates slower boot sequences | Select when higher reset voltage margin or push-pull drive without external pullup is required |
| TPS3808G125DBVR | 1.25V threshold, adjustable timeout (1ms–10s), SOT-23-5 package | Lower threshold targets ultra-low-voltage SoCs; programmable delay offers design flexibility | Choose for sub-1.8V core rails or when timeout tuning is needed post-layout |
Compared with MAX6383XR24D2+T, MAX809TRD2+T provides higher reset voltage and push-pull drive but lacks open-drain flexibility and low-current advantage; TPS3808G125DBVR offers wider threshold range and configurability but consumes 12μA typical and requires additional pins for delay setting.
Availability
MAX6383XR24D2+T is available at Aetrix Electronics and suitable for portable medical sensors, battery-powered telematics, industrial PLC I/O modules, and smart home hub controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6383XR24D2+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, communications, and computing applications.
The MAX6381–MAX6390 family delivers low-power, high-accuracy μP reset supervision for space- and energy-constrained systems, with emphasis on automotive-grade reliability and minimal external component count.
FAQ
What is the exact reset threshold voltage of MAX6383XR24D2+T and how does it vary with temperature?
The MAX6383XR24D2+T has a factory-set nominal reset threshold of 2.40V, with guaranteed tolerance of ±2.5% over the full operating temperature range of −40°C to +125°C. At +25°C, the threshold is 2.40V ±1.5%, and the tempco is 60ppm/°C - meaning drift is less than 15mV across the entire range. This specification is confirmed in the Electrical Characteristics table of the official datasheet.
Does MAX6383XR24D2+T include a manual reset input (MR) pin?
No, MAX6383XR24D2+T does not have a manual reset input. According to the Selector Guide and Pin Configurations, only MAX6384/MAX6385/MAX6386/MAX6390 feature MR functionality. The MAX6383 variant is a 3-pin device (RESET, VCC, GND) with no MR or RESET IN terminals - its function is limited to VCC monitoring and open-drain reset assertion.
What is the maximum sink current capability of the open-drain RESET output on MAX6383XR24D2+T?
The open-drain RESET output of MAX6383XR24D2+T can sink up to 3.2mA when VCC ≥ 4.5V, 1.2mA when VCC ≥ 2.5V, and 80μA when VCC ≥ 1.0V, with VOL ≤ 0.4V, ≤ 0.3V, and ≤ 0.3V respectively. These values are specified in the Electrical Characteristics table under "Open-Drain RESET Output Voltage" and define the minimum external pullup resistance required for proper logic-level translation.
Can MAX6383XR24D2+T operate reliably during rapid VCC transients, and what is its immunity specification?
Yes, MAX6383XR24D2+T provides documented immunity to negative-going VCC transients: it will not assert reset for pulses shorter than 35µs when the overdrive (VTH − VCC) is 100mV. This value is derived from the "Maximum Transient Duration vs. Reset Comparator Overdrive" graph (toc07) and ensures robust operation in noisy DC-DC environments without requiring additional filtering capacitors beyond the recommended 0.1µF VCC bypass.
Is MAX6383XR24D2+T qualified for automotive applications, and what package options are available?
MAX6383XR24D2+T is not automotive-qualified; it carries the "+T" suffix indicating RoHS-compliant packaging but lacks the "/V" automotive qualification marker. It is offered exclusively in the 3-pin SC70 package (outline 21-0075). Automotive variants exist in the same family (e.g., MAX6383XR24D2/V+T), but this specific part number is intended for industrial and commercial applications.
MAX6383XR24D2+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:
- 2.4V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 20ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6383XR24D2+T FAQ
1.How can I place an order for MAX6383XR24D2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383XR24D2+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 MAX6383XR24D2+T reliable?
The price and inventory of MAX6383XR24D2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383XR24D2+T is usually 5 days.
3.What payment methods are accepted for MAX6383XR24D2+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6383XR24D2+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6383XR24D2+T?
MAX6383XR24D2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383XR24D2+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 MAX6383XR24D2+T?
For technical support, including MAX6383XR24D2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383XR24D2+T requirements.
6.How does Aetrix verify that MAX6383XR24D2+T is sourced from the original manufacturer or authorized distributors?
All MAX6383XR24D2+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 MAX6383XR24D2+T meets industry standards.
7.What is the process for return or replacement of MAX6383XR24D2+T?
All MAX6383XR24D2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383XR24D2+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 MAX6383XR24D2+T part is unused and in its original packaging.
Return procedure for MAX6383XR24D2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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