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Analog Devices Inc./Maxim Integrated MAX6383XR46D2+T
- Part No.:
- MAX6383XR46D2+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6383XR46D2+T.pdf
- Description:
- IC MPU/RESET CIRC 4.63V SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,104
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Product details
Overview
MAX6383XR46D2+T from Maxim Integrated is a low-power microprocessor supervisory circuit with open-drain active-low reset output, factory-set 4.63V reset threshold (±2.5% over -40°C to +125°C), and 20ms minimum reset timeout period. It monitors single supply voltage (1.0V–5.5V), consumes only 3μA at 1.8V, and guarantees valid reset state down to VCC = 1V - used in battery-powered instrumentation and embedded controllers requiring reliable brownout detection.
For engineers reviewing the MAX6383XR46D2+T datasheet, MAX6383XR46D2+T pinout, MAX6383XR46D2+T application, or MAX6383XR46D2+T equivalent, key selection criteria include its 4.63V threshold accuracy, 20ms timeout, SC70-3 package footprint, open-drain output requiring external pullup, and compatibility with systems needing precise high-threshold reset assertion during 5V rail monitoring.
Technical Context
The device implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy across -40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a guaranteed-minimum 20ms reset pulse after VCC rises above 4.63V, with power-down reset delay under 35µs for fast transient response.
Reset assertion is triggered solely by VCC falling below threshold; no manual reset (MR) or auxiliary RESET IN inputs are present on MAX6383 variants. The open-drain output supports wired-OR configurations and level-shifting via external pullup resistor, with VOL ≤ 0.3V at ISINK = 1.2mA (VCC ≥ 2.5V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.63V nominal, ±2.5% over full temperature range - ensures reliable assertion before 5V system brownout |
| Reset Timeout | 20ms minimum - provides sufficient hold time for μP initialization without excessive boot delay |
| Supply Current | 3μA at VCC = 1.8V - enables multi-year operation in coin-cell-powered devices |
| Operating Voltage | 1.0V to 5.5V - supports valid reset signaling even during deep discharge or partial power-up |
| Output Type | Open-drain active-low - allows shared reset bus and voltage-level translation with external pullup |
| Threshold Tempco | 60ppm/°C - limits drift to <±15mV over full temperature range, critical for stable 5V rail monitoring |
| VCC Transient Immunity | Rejects negative-going glitches ≤35µs at 100mV overdrive - prevents false resets in noisy power environments |
Pinout & Package
MAX6383XR46D2+T is housed in a RoHS-compliant 3-pin SC70 package (outline 21-0075, land pattern 90-0208), measuring 2.0mm × 2.1mm × 0.95mm, with thermal resistance θJA = 340.4°C/W on multilayer board.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET (open-drain) | Active-low reset signal output; requires external pullup resistor to host rail; sinks up to 1.2mA at VCC ≥ 2.5V |
| 2 | VCC | Primary power supply input and monitored voltage source; operates from 1.0V to 5.5V |
| 3 | GND | Analog and digital ground reference; must be connected directly to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed 4.63V threshold | Eliminates external resistor network; reduces BOM count and layout area in 5V systems |
| 20ms guaranteed-minimum timeout | Ensures μP reset hold time meets ARM Cortex-M and PIC MCU requirements without external timing components |
| 3μA supply current at 1.8V | Extends battery life in portable medical sensors and IoT edge nodes operating from single Li-ion cells |
| Valid reset down to VCC = 1V | Prevents spurious release during slow power ramp-up or brownout recovery in low-voltage systems |
| Open-drain output architecture | Enables multi-source reset arbitration and interface to 1.8V/3.3V/5V logic domains using appropriate pullup voltage |
Applications
| Industrial Sensor Node | 5V Microcontroller Power Monitor |
|---|---|
Use Scenario: Battery-powered environmental sensor collecting temperature/humidity data every 10 seconds. IC Role / Device Role / Timing Role: Supervises 5V LDO output powering the MCU and analog front-end; asserts reset if rail drops below 4.63V during cold-start or battery sag. Use Value: Prevents corrupted EEPROM writes and ADC misreads during marginal supply conditions using factory-calibrated threshold and 20ms hold time. | Use Scenario: Industrial PLC I/O module with dual 5V supplies (logic and field-side) requiring deterministic startup sequencing. IC Role / Device Role / Timing Role: Monitors primary 5V logic rail; generates open-drain reset signal shared across multiple MCUs and FPGAs on same board. Use Value: Ensures synchronized reset release across heterogeneous devices using single-pullup-wired bus, eliminating need for discrete reset generators. |
| Portable Medical Instrument | Automotive Body Control Module |
Use Scenario: Handheld blood glucose meter powered by CR2032 coin cell with boost converter feeding 5V MCU rail. IC Role / Device Role / Timing Role: Detects end-of-life battery voltage collapse (<4.63V) and forces controlled shutdown before data loss. Use Value: Leverages ultra-low 3μA quiescent current to maximize usable battery capacity while guaranteeing reset validity down to 1V during final discharge phase. | Use Scenario: Aftermarket dashboard display unit interfacing with CAN bus and powered from vehicle 12V system via 5V DC-DC converter. IC Role / Device Role / Timing Role: Monitors 5V rail stability during engine cranking transients; open-drain output interfaces directly to 3.3V MCU reset pin via 3.3V pullup. Use Value: Provides noise-immune reset assertion during load-dump events using 35µs glitch rejection and 60ppm/°C threshold stability across automotive temperature range. |
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 | Same 3-pin SC70 package, 4.63V threshold, but push-pull active-low output and 240ms timeout | Not suitable where open-drain bus sharing or level translation is required; longer timeout may delay system boot | Select MAX809TRD2+T only if push-pull drive and extended reset hold are needed; verify MCU reset pin tolerance to VCC-referenced high state |
| TPS3808G33DBVR | 3-pin SOT-23, 3.3V threshold (not 4.63V), 200ms timeout, 1.5μA IQ at 3.3V | Designed for 3.3V systems; incompatible threshold for 5V rail monitoring without external divider | Choose TPS3808G33DBVR only for 3.3V applications; MAX6383XR46D2+T remains optimal for direct 5V supervision |
Compared with MAX809TRD2+T and TPS3808G33DBVR, MAX6383XR46D2+T uniquely delivers 4.63V precision threshold, 20ms timeout, and open-drain output in SC70-3 - making it the only drop-in solution for space-constrained 5V systems requiring bus-shared reset signaling and minimal boot delay.
Availability
MAX6383XR46D2+T is available at Aetrix Electronics and suitable for industrial sensor nodes, portable medical instruments, 5V microcontroller power monitoring, and automotive body control modules requiring stable component supply and long-term production continuity.
Supply support for MAX6383XR46D2+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 industrial, automotive, and computing applications, with emphasis on low-power, high-reliability solutions.
The MAX6381–MAX6390 family delivers single/dual-supply microprocessor supervisory circuits optimized for battery-powered and noise-sensitive systems requiring accurate voltage monitoring and robust reset generation.
FAQ
What is the exact reset threshold voltage of MAX6383XR46D2+T and how stable is it over temperature?
The MAX6383XR46D2+T has a factory-set nominal reset threshold of 4.63V, with guaranteed accuracy of ±2.5% over the full operating temperature range (-40°C to +125°C). Its temperature coefficient is 60ppm/°C, resulting in maximum drift of approximately ±15mV across the entire range - sufficient for stable 5V rail supervision without calibration.
Does MAX6383XR46D2+T include a manual reset input (MR) or auxiliary RESET IN pin?
No, MAX6383XR46D2+T does not include MR or RESET IN functionality. It is a basic single-supply supervisory circuit with only VCC, GND, and open-drain RESET pins. Manual reset capability is present only on MAX6384–MAX6386 and MAX6390 variants; auxiliary monitoring is exclusive to MAX6387–MAX6389.
What package type and dimensions does MAX6383XR46D2+T use, and is it RoHS-compliant?
MAX6383XR46D2+T uses a 3-pin SC70 package (outline 21-0075), measuring 2.0mm × 2.1mm × 0.95mm. The "+T" suffix confirms it is lead(Pb)-free and RoHS-compliant. Land pattern number 90-0208 applies, and thermal resistance θJA is 340.4°C/W on a multilayer PCB.
Can MAX6383XR46D2+T operate reliably when VCC drops below 1.8V?
Yes, MAX6383XR46D2+T guarantees correct reset output logic state down to VCC = 1.0V. At 1.8V, supply current is only 3μA; at 1.0V, it remains functional with valid open-drain reset assertion - critical for graceful shutdown in deeply discharged battery systems before VCC reaches 0V.
What is the minimum reset timeout period for MAX6383XR46D2+T and how is it implemented?
The MAX6383XR46D2+T has a minimum reset timeout period of 20ms (suffix "D2"). This is a factory-programmed, temperature-compensated internal timer that holds the open-drain RESET pin low for ≥20ms after VCC rises above 4.63V, ensuring sufficient hold time for microcontroller core and peripheral initialization without external components.
MAX6383XR46D2+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:
- 4.63V
- 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
MAX6383XR46D2+T FAQ
1.How can I place an order for MAX6383XR46D2+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6383XR46D2+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 MAX6383XR46D2+T reliable?
The price and inventory of MAX6383XR46D2+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6383XR46D2+T is usually 5 days.
3.What payment methods are accepted for MAX6383XR46D2+T?
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4.How is shipping managed for MAX6383XR46D2+T?
MAX6383XR46D2+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6383XR46D2+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 MAX6383XR46D2+T?
For technical support, including MAX6383XR46D2+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6383XR46D2+T requirements.
6.How does Aetrix verify that MAX6383XR46D2+T is sourced from the original manufacturer or authorized distributors?
All MAX6383XR46D2+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 MAX6383XR46D2+T meets industry standards.
7.What is the process for return or replacement of MAX6383XR46D2+T?
All MAX6383XR46D2+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6383XR46D2+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 MAX6383XR46D2+T part is unused and in its original packaging.
Return procedure for MAX6383XR46D2+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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