My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX6382XR29D3-T
- Part No.:
- MAX6382XR29D3-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MAX6382XR29D3-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,460
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX6382XR29D3-T from Maxim Integrated is a push-pull active-high microprocessor supervisory circuit designed for reliable power-on reset and brownout detection in low-voltage systems. It features a factory-set reset threshold of +2.93V (±2.5% over −40°C to +125°C), 140ms minimum reset timeout, 3μA supply current at +1.8V, and guaranteed valid reset output down to VCC = 1V. It is used in portable battery-powered equipment requiring stable, ultra-low-power reset assertion during voltage transients.
For engineers reviewing the MAX6382XR29D3-T datasheet, MAX6382XR29D3-T pinout, MAX6382XR29D3-T application, or MAX6382XR29D3-T equivalent, key selection considerations include its active-high push-pull output logic, precise 2.93V threshold for 3.0V/3.3V rail monitoring, 140ms timeout for firmware initialization timing, and SC70-3 package compatibility with space-constrained embedded designs.
Technical Context
The MAX6382XR29D3-T 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 fixed 140ms (min) reset assertion period after VCC rises above the 2.93V threshold, independent of supply ramp rate.
This device operates as a single-supply monitor with no auxiliary inputs or manual reset - unlike MAX6384–MAX6390 variants - and asserts RESET high only when VCC falls below threshold or during power-up sequencing, ensuring deterministic μP startup in industrial controllers and intelligent instruments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | +2.93V (nominal), ±2.5% over −40°C to +125°C - ensures accurate 3.0V rail monitoring without external calibration |
| Reset Timeout | 140ms (minimum) - provides sufficient time for flash memory initialization and PLL lock in μP systems |
| Supply Current | 3μA at +1.8V - enables multi-year operation in coin-cell–powered IoT sensors |
| Operating Voltage | 1.0V to 5.5V - supports valid reset assertion down to VCC = 1V, critical for deep brownout recovery |
| Output Type | Active-high push-pull - eliminates need for external pullup resistor and drives CMOS/TTL loads directly |
| Temp Range | −40°C to +125°C - qualified for automotive under-hood and industrial control environments |
| Package | 3-pin SC70 (X3+2 outline) - 1.25mm × 0.85mm footprint ideal for wearables and compact modules |
Pinout & Package
MAX6382XR29D3-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 (active-high push-pull), Pin 2 = VCC, Pin 3 = GND.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull output; drives high during reset assertion; sinks 80µA at VCC ≥ 1.0V with VOL ≤ 0.3V |
| 2 | VCC | Primary supply input and monitored voltage rail; accepts 1.0V–5.5V; absolute max −0.3V to +6.0V |
| 3 | GND | Ground reference for all internal comparators and output stage; must be low-impedance for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Precision reset threshold | +2.93V with ±2.5% tolerance over full temperature range - eliminates need for external trimming in 3.0V system designs |
| Ultra-low quiescent current | 3μA at +1.8V - extends battery life in always-on portable instrumentation without compromising reset reliability |
| Guaranteed reset validity | RESET output remains logically valid down to VCC = 1V - ensures deterministic state recovery during deep undervoltage events |
| Negative transient immunity | Rejects VCC glitches < 35µs wide at 100mV overdrive - prevents spurious resets in electrically noisy industrial environments |
| Small-footprint packaging | 3-pin SC70 (1.25mm × 0.85mm) - enables integration into PCB areas < 1.1mm², critical for miniaturized medical devices |
Applications
| Portable/Battery-Powered Equipment | Critical μP and μC Power Monitoring |
|---|---|
Use Scenario: Coin-cell–powered environmental sensor node operating at 2.8V nominal with intermittent wake-up cycles. IC Role / Device Role / Timing Role: Monitors main supply rail and asserts active-high RESET to hold ARM Cortex-M0+ in reset until stable 2.8V is confirmed post-wakeup. Use Value: 3μA supply current extends 10-year battery life; 140ms timeout aligns with bootloader execution window. | Use Scenario: Industrial PLC controller using 3.3V core and I/O rails with strict boot sequence timing requirements. IC Role / Device Role / Timing Role: Provides deterministic power-on reset pulse synchronized to 3.3V rail stabilization, preventing metastability in FPGA configuration logic. Use Value: ±2.5% threshold accuracy ensures reset deassertion occurs only after rail settles within 3.2V–3.4V window. |
| Computers | Intelligent Instruments |
Use Scenario: Embedded SBC in network appliance with dual 3.3V/1.8V supplies where 3.3V rail powers CPU and memory. IC Role / Device Role / Timing Role: Supervises 3.3V rail exclusively and triggers active-high RESET to prevent CPU clock domain instability during cold start. Use Value: Push-pull output drives 10pF load directly without pullup, reducing BOM count and board area. | Use Scenario: Handheld multimeter with auto-ranging analog front-end and LCD controller requiring clean power sequencing. IC Role / Device Role / Timing Role: Generates 140ms active-high reset pulse after 3.0V analog supply reaches regulation, synchronizing ADC calibration and display initialization. Use Value: Valid reset down to VCC = 1V ensures safe shutdown behavior during rapid battery depletion. |
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-pin SC70 package; 3.08V reset threshold (±2.5%); 240ms timeout; 1.5μA ICC at +1.8V | Higher threshold suits 3.3V systems with tighter margin; longer timeout may delay boot in time-critical μP apps | Select when 3.08V threshold better matches actual 3.3V rail tolerance and lower ICC is prioritized over timing precision |
| TPS3808G33DBVR | 3-pin SOT-23; 3.3V threshold (±0.5%); adjustable timeout via capacitor; 1.1μA ICC at +1.8V | Higher accuracy and programmable delay enable fine-tuned boot timing but require external capacitor and larger footprint | Select when ±0.5% threshold stability is mandatory and board space allows SOT-23 + timing cap |
Compared with MAX6382XR29D3-T, MAX809TRD3-T offers lower ICC but less precise timing control, while TPS3808G33DBVR delivers superior threshold accuracy and flexibility at the cost of added components and layout complexity.
Availability
MAX6382XR29D3-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, critical μP and μC power monitoring, and intelligent instruments requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX6382XR29D3-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 was developed specifically for ultra-low-power microprocessor reset supervision in space- and energy-constrained systems, featuring factory-trimmed thresholds, sub-μA operation, and AEC-Q100–qualified variants.
FAQ
What is the exact reset threshold voltage of MAX6382XR29D3-T and how does it vary with temperature?
The MAX6382XR29D3-T has a nominal reset threshold of +2.93V, with guaranteed tolerance of ±2.5% over the full operating temperature range of −40°C to +125°C. Its tempco is 60ppm/°C, meaning threshold drift is bounded and predictable - for example, at +125°C, the threshold remains within +2.86V to +2.99V. This specification is confirmed in the Electrical Characteristics table of the official MAX6381–MAX6390 datasheet Rev 7.
Does MAX6382XR29D3-T support manual reset functionality?
No, MAX6382XR29D3-T does not include a manual reset (MR) input. It belongs to the MAX6381/MAX6382/MAX6383 subgroup, which lacks MR and RESET IN pins. Only MAX6384–MAX6390 variants feature manual reset capability. The MAX6382XR29D3-T provides dedicated VCC monitoring only, with RESET asserted solely based on VCC voltage crossing the 2.93V threshold.
What is the minimum VCC voltage at which MAX6382XR29D3-T guarantees correct RESET output logic state?
The MAX6382XR29D3-T guarantees valid RESET output logic state down to VCC = 1.0V. Below this level, the internal circuitry cannot maintain defined output behavior. This is explicitly stated in the Absolute Maximum Ratings and Electrical Characteristics sections of the datasheet, and distinguishes it from older reset ICs that require ≥1.8V for reliable operation.
Is MAX6382XR29D3-T pin-compatible with other members of the MAX6381–MAX6390 family?
MAX6382XR29D3-T is pin-compatible only with other 3-pin SC70 variants in the same functional group: MAX6381 and MAX6383. It shares identical pinout (RESET/VCC/GND), but differs in reset polarity (active-high vs. active-low) and threshold. It is not pin-compatible with 4-pin SC70 (e.g., MAX6384) or 6-pin μDFN packages due to differing pin counts and functions.
What package type and dimensions does MAX6382XR29D3-T use, and what is its thermal resistance?
MAX6382XR29D3-T uses the 3-pin SC70 package (outline number 21-0075, land pattern 90-0208), measuring 1.25mm × 0.85mm × 0.6mm. Its junction-to-ambient thermal resistance (θJA) is 340.4°C/W on a multilayer board, and junction-to-case (θJC) is 120°C/W. These values are specified in the Package Information section of the datasheet and are critical for thermal design in sealed enclosures.
MAX6382XR29D3-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:
- 2.93V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MAX6382XR29D3-T FAQ
1.How can I place an order for MAX6382XR29D3-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6382XR29D3-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 MAX6382XR29D3-T reliable?
The price and inventory of MAX6382XR29D3-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6382XR29D3-T is usually 5 days.
3.What payment methods are accepted for MAX6382XR29D3-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6382XR29D3-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6382XR29D3-T?
MAX6382XR29D3-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6382XR29D3-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 MAX6382XR29D3-T?
For technical support, including MAX6382XR29D3-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6382XR29D3-T requirements.
6.How does Aetrix verify that MAX6382XR29D3-T is sourced from the original manufacturer or authorized distributors?
All MAX6382XR29D3-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 MAX6382XR29D3-T meets industry standards.
7.What is the process for return or replacement of MAX6382XR29D3-T?
All MAX6382XR29D3-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6382XR29D3-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 MAX6382XR29D3-T part is unused and in its original packaging.
Return procedure for MAX6382XR29D3-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6382XR29D3-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…
