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Analog Devices Inc./Maxim Integrated MAX6385XS29D1-T
- Part No.:
- MAX6385XS29D1-T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-82A, SOT-343
- Datasheet:
-
MAX6385XS29D1-T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-4
- Quantity:
- Payment:
- Shipping:
Inventory:1,158
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Product details
Overview
MAX6385XS29D1-T from Maxim Integrated is a micropower voltage supervisor IC with active-high push-pull reset output, factory-set 2.93V reset threshold (±2.5% over −40°C to +125°C), 1ms minimum reset timeout, and manual reset input (MR) featuring internal 63kΩ pullup. It monitors single supply rails in low-voltage embedded systems and guarantees valid reset state down to VCC = 1V.
For engineers reviewing the MAX6385XS29D1-T datasheet, MAX6385XS29D1-T pinout, MAX6385XS29D1-T application, or MAX6385XS29D1-T equivalent, this page delivers verified electrical specs, SC70-4 package details, MR timing behavior, reset accuracy across temperature, and direct alternatives for power-rail monitoring in battery-powered controllers and critical μP systems.
Technical Context
The MAX6385XS29D1-T implements a precision bandgap-based voltage comparator with ±2.5% threshold accuracy over −40°C to +125°C and 60ppm/°C tempco. Its internal timer generates a guaranteed-minimum 1ms reset assertion after VCC rises above 2.93V or after MR release.
It features an active-high push-pull RESET output capable of sourcing 800µA at VCC ≥ 4.5V (VOH ≥ 0.8×VCC) and sinking 3.2mA (VOL ≤ 0.4V), plus a debounced MR input with 1µs minimum pulse width and 100ns glitch rejection - all while drawing only 3µA at 1.8V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.93V nominal, ±2.5% over −40°C to +125°C - ensures reliable brownout detection across automotive and industrial temperature ranges |
| Reset Timeout | 1ms minimum - provides sufficient hold time for microprocessor initialization during fast power-up sequences |
| Supply Current | 3µA at VCC = 1.8V - enables multi-year operation in coin-cell–powered IoT sensors and portable equipment |
| MR Pullup Resistance | 63kΩ - allows direct connection of momentary switch to GND without external components |
| RESET Output Type | Active-high push-pull - eliminates need for external pullup resistor and supports direct interface to CMOS/TTL reset inputs |
| Operating Voltage Range | 1.0V to 5.5V - guarantees functional reset assertion even during deep brownout conditions down to 1V |
| Reset Comparator Tempco | 60ppm/°C - limits threshold drift to <±15mV over full temperature range, critical for stable system boot |
Pinout & Package
MAX6385XS29D1-T is housed in a RoHS-compliant 4-pin SC70 package (outline 21-0098, land pattern 90-0187), measuring 2.0mm × 2.1mm × 0.95mm, suitable for space-constrained PCB layouts in portable electronics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VCC | Main supply input and monitored voltage rail - must be decoupled with 0.1µF capacitor near pin for transient immunity |
| 2 | RESET | Active-high push-pull reset output - drives high during fault condition; sinks current when deasserted |
| 3 | MR | Active-low manual reset input - internally pulled up to VCC; logic-low pulse ≥1µs forces reset regardless of VCC level |
| 4 | GND | Analog/digital ground reference - requires low-impedance connection to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Factory-trimmed reset threshold | 2.93V with ±2.5% tolerance over −40°C to +125°C - eliminates need for external resistor divider calibration |
| Guaranteed reset validity | RESET output remains logically valid down to VCC = 1V - prevents spurious resets during deep undervoltage events |
| Integrated MR pullup | 63kΩ internal resistor - enables single-switch manual reset implementation with no BOM additions |
| Negative-going VCC transient immunity | Rejects glitches ≤35µs at 100mV overdrive - improves robustness in electrically noisy environments |
| Low-power operation | 3µA supply current at 1.8V - extends battery life in always-on monitoring applications |
Applications
| Computers | Controllers |
|---|---|
Use Scenario: Monitoring 3.3V core supply in compact industrial PLC CPU modules during cold-start and brownout. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-high RESET to halt processor execution until stable VCC > 2.93V for ≥1ms. Use Value: Prevents corrupted firmware execution by guaranteeing minimum reset duration independent of supply ramp rate. | Use Scenario: Power sequencing control in battery-powered HVAC controller with dual 1.8V/3.3V rails. IC Role / Device Role / Timing Role: Single-supply monitor on main 3.3V rail; MR pin used for service-mode reset via front-panel button. Use Value: Eliminates need for external debounce circuitry and reduces component count by integrating 63kΩ MR pullup. |
| Intelligent Instruments | Critical μP and μC Power Monitoring |
Use Scenario: Supply supervision in handheld multimeter with Li-ion battery input and LDO-regulated 2.8V analog front-end. IC Role / Device Role / Timing Role: Detects battery sag below 2.93V and asserts RESET to preserve measurement integrity before shutdown. Use Value: 3µA quiescent current enables >5-year shelf life; ±2.5% threshold accuracy ensures repeatable low-battery cutoff. | Use Scenario: Reset generation for ARM Cortex-M0+ MCU in medical sensor node operating from coin cell. IC Role / Device Role / Timing Role: Guarantees valid active-high RESET signal down to VCC = 1V, enabling safe shutdown sequence before complete power loss. Use Value: Push-pull output avoids external pullup, reducing leakage paths and preserving battery energy during sleep states. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD1-T | 2.93V threshold, 140ms timeout, no MR input, SOT23-3 package | Lacks manual reset functionality; shorter timeout unsuitable for slow-ramp μP boot | Select when MR is unnecessary and board space permits SOT23-3 footprint |
| TPS3808G125DBVR | 2.93V threshold, 200ms min timeout, MR input, 6-pin SOT23 package | Longer timeout and larger package; higher 8µA ICC at 1.8V | Choose if longer reset hold time is required and 6-pin layout is acceptable |
Compared with MAX809TRD1-T and TPS3808G125DBVR, the MAX6385XS29D1-T uniquely combines 1ms timeout, integrated MR pullup, and ultra-low 3µA supply current in a 4-pin SC70 - making it optimal for space- and power-constrained μP reset applications requiring precise short-duration assertion.
Availability
MAX6385XS29D1-T is available at Aetrix Electronics and suitable for portable/battery-powered equipment, intelligent instruments, and critical μP and μC power monitoring requiring stable component supply and long-term production continuity.
Supply support for MAX6385XS29D1-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 demanding industrial, automotive, and computing applications.
The MAX6381–MAX6390 family delivers low-power, high-accuracy voltage supervisors targeting battery-operated and thermally harsh embedded systems where reliable power-on reset and brownout protection are essential.
FAQ
What is the exact reset threshold voltage of the MAX6385XS29D1-T?
The MAX6385XS29D1-T has a factory-set nominal reset threshold of 2.93V, with guaranteed tolerance of ±2.5% over the full operating temperature range (−40°C to +125°C). This value is confirmed in the Reset Thresholds table of the official datasheet and applies specifically to the "29" suffix in the part number.
Does the MAX6385XS29D1-T support manual reset, and how is it implemented?
Yes, the MAX6385XS29D1-T includes a debounced manual reset input (MR) on Pin 3. It features an internal 63kΩ pullup resistor to VCC, allowing direct connection of a momentary switch to GND. A logic-low pulse ≥1µs on MR forces reset assertion for the full 1ms timeout period, independent of VCC level.
What package type and dimensions does the MAX6385XS29D1-T use?
The MAX6385XS29D1-T uses a 4-pin SC70 package (outline number 21-0098), measuring 2.0mm × 2.1mm × 0.95mm. Its land pattern is specified as 90-0187, and it is RoHS-compliant (indicated by the "+T" suffix). This compact footprint supports high-density PCB layouts in portable electronics.
Can the MAX6385XS29D1-T operate reliably at very low supply voltages?
Yes, the MAX6385XS29D1-T guarantees functional operation down to VCC = 1.0V. Its RESET output remains logically valid (active-high asserted or deasserted as appropriate) across the full 1.0V to 5.5V operating range, ensuring safe microprocessor reset behavior even during deep brownout conditions.
How does the reset timeout behavior differ between VCC recovery and manual reset on the MAX6385XS29D1-T?
The MAX6385XS29D1-T provides a fixed 1ms minimum timeout for both VCC recovery and MR release - unlike variants such as MAX6390 which offer asymmetric timing. After VCC rises above 2.93V or MR returns high, RESET remains asserted for ≥1ms before deassertion, ensuring consistent reset hold time across both trigger sources.
MAX6385XS29D1-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-82A, SOT-343
- 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:
- 1ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-4
MAX6385XS29D1-T FAQ
1.How can I place an order for MAX6385XS29D1-T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX6385XS29D1-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 MAX6385XS29D1-T reliable?
The price and inventory of MAX6385XS29D1-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX6385XS29D1-T is usually 5 days.
3.What payment methods are accepted for MAX6385XS29D1-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX6385XS29D1-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX6385XS29D1-T?
MAX6385XS29D1-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX6385XS29D1-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 MAX6385XS29D1-T?
For technical support, including MAX6385XS29D1-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX6385XS29D1-T requirements.
6.How does Aetrix verify that MAX6385XS29D1-T is sourced from the original manufacturer or authorized distributors?
All MAX6385XS29D1-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 MAX6385XS29D1-T meets industry standards.
7.What is the process for return or replacement of MAX6385XS29D1-T?
All MAX6385XS29D1-T units undergo pre-shipment inspection (PSI). If there is an issue with MAX6385XS29D1-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 MAX6385XS29D1-T part is unused and in its original packaging.
Return procedure for MAX6385XS29D1-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX6385XS29D1-T Tags
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