My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6381XR23D6-T
- Part No.:
- MAX6381XR23D6-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6381XR23D6-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,755
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6381XR23D6-T from Maxim Integrated is a low-power microprocessor supervisory circuit in 3-pin SC70 package, featuring factory-set 2.3V reset threshold (±2.5% over -40°C to +125°C), 560ms minimum VCC reset timeout, and active-low open-drain reset output. It monitors single supply voltage down to 1.0V and consumes only 3μA at +1.8V, enabling reliable power-up/brownout detection in space-constrained battery-powered systems.
For engineers reviewing the MAX6381XR23D6-T datasheet, MAX6381XR23D6-T pinout, MAX6381XR23D6-T application, or MAX6381XR23D6-T equivalent, key selection criteria include its precise 2.3V threshold tolerance, guaranteed reset validity down to VCC = 1V, immunity to negative-going VCC transients ≤35µs at 100mV overdrive, and compatibility with standard μP reset input logic levels.
Technical Context
The MAX6381XR23D6-T implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy across -40°C to +125°C and 60ppm/°C tempco, paired with a temperature-stable RC timer delivering 560ms minimum reset assertion after VCC recovery. Its open-drain RESET output requires an external pullup and remains valid for VCC ≥ 1V, ensuring deterministic behavior during deep brownout.
No manual reset (MR) or auxiliary RESET IN inputs are present-this variant is optimized for single-supply monitoring only. The device lacks internal pullups or secondary comparators, distinguishing it from MAX6384–MAX6390 and MAX6387–MAX6389 families, and operates within 1.0V to 5.5V supply range with 3μA quiescent current at 1.8V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.3V nominal, ±2.5% over -40°C to +125°C - ensures accurate brownout detection across automotive and industrial temperature ranges |
| VCC Reset Timeout | 560ms minimum - guarantees sufficient μP hold time during slow power-rail recovery |
| 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 even during severe undervoltage conditions |
| Output Type | Active-low open-drain - allows wired-OR configuration and level translation with external pullup |
| Reset Propagation Delay | 35µs max (VCC falling at 10mV/µs) - provides fast response to abrupt supply collapse |
| Transient Immunity | Immune to negative VCC glitches ≤35µs at 100mV overdrive - suppresses false resets from switching noise |
Pinout & Package
MAX6381XR23D6-T uses a 3-pin SC70 package (outline 21-0075, land pattern 90-0208), measuring 2.0mm × 2.1mm × 0.95mm, with exposed pad not connected internally. Pin 1 is RESET (active-low open-drain), Pin 2 is VCC, and Pin 3 is GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - RESET | Active-low open-drain reset output | Drives low when VCC < 2.3V; requires external pullup resistor; sinks up to 3.2mA at VCC ≥ 4.5V |
| 2 - VCC | Power supply input and monitored voltage rail | Supplies internal circuitry and serves as primary reset trigger source; accepts 1.0V–5.5V |
| 3 - GND | Ground reference | Common return path for all internal functions and reset comparator reference |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.3V with ±2.5% accuracy over full temperature range - eliminates external resistor networks and calibration |
| Ultra-low quiescent current | 3μA at 1.8V - extends battery life in portable medical and sensor nodes without compromising supervision integrity |
| Guaranteed reset validity | RESET state remains valid down to VCC = 1.0V - prevents spurious release during deep brownout |
| Negative transient immunity | Rejects VCC glitches ≤35µs at 100mV overdrive - avoids false resets in noisy DC/DC converter environments |
| Open-drain output architecture | Enables shared reset bus with multiple ICs and flexible voltage-level translation via external pullup |
Applications
| Industrial PLC I/O Modules | Portable Medical Sensors |
|---|---|
|
Use Scenario: Monitoring 3.3V I/O supply in DIN-rail mounted programmable logic controllers subject to 12V field wiring transients. IC Role / Device Role / Timing Role: Single-supply supervisor asserting active-low reset to ARM Cortex-M7 MCU during brownout, with 560ms timeout ensuring firmware reload completion. Use Value: Prevents corrupted register writes during unstable 3.3V rail by holding reset until supply stabilizes, leveraging ±2.5% threshold accuracy to avoid nuisance trips. |
Use Scenario: Power management in handheld glucose meters powered by CR2032 coin cell with aging voltage droop. IC Role / Device Role / Timing Role: Detecting 2.3V threshold crossing on main 3.0V LDO output to initiate controlled shutdown before EEPROM write corruption. Use Value: 3μA supply current extends battery life beyond 2 years while guaranteeing reset assertion down to 1.0V VCC, covering full discharge curve. |
| Automotive Body Control Units | Smart Energy Meters |
|
Use Scenario: Supervising 5.0V microcontroller supply in door module exposed to load-dump and cold-crank conditions. IC Role / Device Role / Timing Role: Providing AEC-Q100 qualified reset signal to Infineon TC3xx MCU with 560ms timeout aligned to CAN bus wake-up timing. Use Value: ±2.5% threshold tolerance ensures consistent trip point across -40°C to +125°C ambient, critical for cold-crank reliability. |
Use Scenario: Monitoring backup supercapacitor voltage during AC mains failure in utility-grade electricity meters. IC Role / Device Role / Timing Role: Triggering reset to TI MSP430F6779 when 2.3V backup rail falls below threshold, initiating secure data save before power loss. Use Value: Open-drain output interfaces directly to meter's 3.3V reset bus without level-shifting, reducing BOM count and board area. |
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 | 2.32V threshold (±2.5%), 240ms timeout, SOT23-3 package, no AEC-Q100 qualification | Lacks automotive qualification and longer timeout; suitable for commercial-grade cost-sensitive designs | Select when AEC-Q100 compliance is unnecessary and shorter reset hold time suffices |
| TPS3808G33DBVR | 3.3V threshold, 200ms timeout, 3-pin SOT23, 1.6μA ICC at 1.8V, no open-drain option | Fixed 3.3V threshold incompatible with 2.3V target; push-pull output limits bus sharing | Choose only if system requires 3.3V supervision and push-pull drive is acceptable |
Compared with MAX809TRD3-T and TPS3808G33DBVR, MAX6381XR23D6-T uniquely delivers 2.3V precision supervision with 560ms timeout and open-drain output in a 3-pin SC70 footprint, making it optimal for space-constrained, automotive-qualified, or multi-device reset-bus applications where threshold accuracy and extended hold time are critical.
Availability
MAX6381XR23D6-T is available at Aetrix Electronics and suitable for industrial PLC I/O modules, portable medical sensors, automotive body control units, and smart energy meters requiring stable component supply with guaranteed long-term availability.
Supply support for MAX6381XR23D6-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, emphasizing low power, high accuracy, and robustness.
The MAX6381–MAX6390 family targets ultra-low-power microprocessor supervision in space- and power-constrained systems, with variants optimized for single/dual supply monitoring, manual reset, and automotive qualification.
FAQ
What is the exact reset threshold voltage of MAX6381XR23D6-T and how stable is it over temperature?
The MAX6381XR23D6-T has a factory-set nominal reset threshold of 2.3V, with guaranteed accuracy of ±2.5% over the full operating temperature range of -40°C to +125°C. Its temperature coefficient is 60ppm/°C, meaning threshold drift is limited to approximately ±0.015V across the entire range - sufficient for reliable brownout detection in automotive and industrial environments where supply rails exhibit thermal drift.
Does MAX6381XR23D6-T support manual reset functionality?
No, MAX6381XR23D6-T does not include a manual reset (MR) input. It belongs to the MAX6381/MAX6382/MAX6383 subgroup, which features only VCC monitoring and open-drain (MAX6381/MAX6383) or push-pull (MAX6382) reset outputs. Manual reset capability is exclusive to MAX6384–MAX6386 and MAX6390 variants, confirmed by the Selector Guide and Pin Configurations section of the datasheet.
What package type and dimensions does MAX6381XR23D6-T use?
MAX6381XR23D6-T is packaged in a 3-pin SC70 (SOT-323) outline, with package code X3+2, outline number 21-0075, and land pattern 90-0208. Its physical dimensions are 2.0mm × 2.1mm × 0.95mm, and it features a non-connected exposed pad. This compact RoHS-compliant package enables high-density PCB layouts in portable and automotive electronics.
Can MAX6381XR23D6-T monitor a second voltage rail?
No, MAX6381XR23D6-T does not support auxiliary voltage monitoring. It is a single-supply supervisor with only VCC as the monitored input. Auxiliary RESET IN functionality is reserved for MAX6387/MAX6388/MAX6389 variants, as explicitly stated in the Pin Description table and Selector Guide - MAX6381XR23D6-T lacks both the RESET IN pin and internal comparator for secondary rail supervision.
What is the minimum supply voltage at which MAX6381XR23D6-T guarantees correct reset output behavior?
MAX6381XR23D6-T guarantees valid reset output logic states down to VCC = 1.0V, as specified in the Absolute Maximum Ratings and Detailed Description sections. Below this voltage, the internal comparator and timer may become indeterminate. This 1.0V lower limit ensures robust operation during deep brownout events common in battery-powered systems approaching end-of-life.
MAX6381XR23D6-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:
- 2.31V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 560ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6381XR23D6-T FAQ
1.How can I place an order for MAX6381XR23D6-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6381XR23D6-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 MAX6381XR23D6-T reliable?
The price and inventory of MAX6381XR23D6-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6381XR23D6-T is usually 5 days.
3.What payment methods are accepted for MAX6381XR23D6-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6381XR23D6-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6381XR23D6-T?
MAX6381XR23D6-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6381XR23D6-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 MAX6381XR23D6-T?
For technical support, including MAX6381XR23D6-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6381XR23D6-T requirements.
6.How does Aetrix verify that MAX6381XR23D6-T is sourced from the original manufacturer or authorized distributors?
All MAX6381XR23D6-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 MAX6381XR23D6-T meets industry standards.
7.What is the process for return or replacement of MAX6381XR23D6-T?
All MAX6381XR23D6-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6381XR23D6-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 MAX6381XR23D6-T part is unused and in its original packaging.
Return procedure for MAX6381XR23D6-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6381XR23D6-T Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
