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Analog Devices Inc./Maxim Integrated MXD1815XR23
- Part No.:
- MXD1815XR23
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MXD1815XR23.pdf
- Description:
- IC SUPERVISOR MICROPROCES RESET
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
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Product details
Overview
MXD1815XR23 from Maxim Integrated is a low-power microprocessor reset supervisor IC designed for +2.5V/+3.0V/+3.3V digital systems. It monitors VCC and asserts an active-low push-pull RESET signal when supply voltage falls below 2.31V (±2.5% over temperature), maintains reset for ≥100ms after VCC recovery, draws only 4μA typical supply current, and operates across –40°C to +105°C - ideal for portable battery-powered μP monitoring.
For engineers reviewing the MXD1815XR23 datasheet, MXD1815XR23 pinout, MXD1815XR23 application, or MXD1815XR23 equivalent, key selection criteria include its factory-trimmed 2.31V reset threshold, SC70-3 package footprint, guaranteed RESET validity down to VCC = +1V, and compatibility with brownout detection in embedded controllers and intelligent instruments.
Technical Context
The MXD1815XR23 implements a precision bandgap-based voltage comparator with hysteresis to detect VCC drops below its 2.31V threshold, coupled with a monolithic timer that enforces a minimum 100ms reset timeout period upon VCC recovery. Its push-pull output drives high-impedance μP reset inputs directly without external pullups.
This device belongs to the MXD1815–MXD1818 subfamily optimized for 2.5V/3.0V/3.3V systems and excludes manual-reset debouncing (unlike MXD1813/MXD1818); it guarantees correct logic state output down to VCC = +1V and rejects fast transients via internal filtering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.31V ±2.5% over –40°C to +105°C - ensures reliable brownout detection for 2.5V/3.0V/3.3V rails |
| Reset Timeout Period | 100ms minimum - guarantees sufficient μP initialization time after power recovery |
| Supply Current | 4μA typical at +3.6V - enables multi-year operation in battery-backed portable equipment |
| Operating Voltage Range | +1.0V to +5.5V - supports valid RESET assertion even during deep brownout conditions |
| Output Type | Active-low push-pull - eliminates need for external pullup resistor on μP reset input |
| Package | 3-pin SC70 - 2.0mm × 2.1mm footprint ideal for space-constrained PCB layouts |
| Temperature Range | –40°C to +105°C - qualified for industrial and extended-temperature embedded applications |
Pinout & Package
MXD1815XR23 is housed in a 3-pin SC70 package (outline X3-2, land pattern 90-0208), with pin 1 as RESET (active-low push-pull), pin 2 as VCC (supply and threshold monitor input), and pin 3 as GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-low push-pull output - drives μP reset pin directly; sinks current when asserted, sources weakly when deasserted |
| 2 | VCC | Power supply input and reset threshold reference - monitored continuously for undervoltage events |
| 3 | GND | Ground reference - forms return path for internal comparator and output stage |
Key Features
| Feature | Design Value |
|---|---|
| Precision reset threshold | Factory-trimmed 2.31V with ±2.5% accuracy over full temperature range - eliminates calibration overhead |
| No external components required | Integrated comparator, timer, and push-pull driver - reduces BOM count and layout area |
| Low-power operation | 4μA typical ICC - extends battery life in portable instrumentation and handheld devices |
| Brownout transient immunity | Designed to ignore fast VCC glitches - prevents spurious resets during switching noise |
| Guaranteed reset validity to VCC = +1V | Ensures deterministic μP behavior during deep power collapse - critical for safe shutdown sequences |
Applications
| Computers and Controllers | Intelligent Instruments |
|---|---|
Use Scenario: Monitoring 3.3V power rail in an industrial PLC controller during cold-start and line-sag events. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low RESET to hold μP in reset until stable 3.3V is confirmed. Use Value: Prevents code execution errors during marginal VCC conditions using factory-calibrated 2.31V threshold and 100ms timeout. | Use Scenario: Power supervision in handheld multimeter with lithium coin-cell backup. IC Role / Device Role / Timing Role: Low-current (4μA) reset generator ensuring μC remains held in reset below 2.31V during battery depletion. Use Value: Enables >5-year shelf life while guaranteeing valid RESET down to VCC = +1V for graceful shutdown. |
| Set-Top Boxes | Portable/Battery-Powered Equipment |
Use Scenario: Ensuring clean boot sequence after AC power interruption in cable STB with 3.3V SoC rail. IC Role / Device Role / Timing Role: Push-pull RESET supervisor eliminating need for external pullup on SoC reset pin. Use Value: Reduces component count and improves reliability versus discrete RC+transistor reset solutions. | Use Scenario: Brownout protection in Bluetooth LE sensor node powered by single 3.0V alkaline cell. IC Role / Device Role / Timing Role: Voltage-monitoring IC asserting reset before μC enters undefined state near end-of-life voltage. Use Value: Uses 2.31V threshold aligned with 3.0V system margin, enabling predictable low-battery cutoff. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TR23+T | Same 2.31V threshold, SOT23-3 package, but 1.2μA typical ICC - lower power than MXD1815XR23's 4μA | Lacks guaranteed RESET validity below +1.2V; not rated for operation down to VCC = +1V | Select when ultra-low quiescent current is prioritized over deep-brownout robustness |
| TPS3808G12DBVR | Adjustable threshold via external resistor divider; 2.5μA typical ICC; requires external capacitor for timeout | Higher design complexity due to external components; no factory-trimmed 2.31V option | Select when programmable reset voltage or longer timeout periods (>200ms) are required |
Compared with MAX809TR23+T, MXD1815XR23 trades 2.8μA higher supply current for guaranteed reset functionality down to VCC = +1V - critical in battery-depletion scenarios. Versus TPS3808G12DBVR, MXD1815XR23 offers plug-and-play 2.31V supervision without external passives, reducing BOM and layout risk.
Availability
MXD1815XR23 is available at Aetrix Electronics and suitable for computers and controllers, intelligent instruments, and portable/battery-powered equipment requiring stable component supply, long-term lifecycle support, and industrial temperature-grade reliability.
Supply support for MXD1815XR23 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, communications, and consumer applications.
The MXD1815XR23 belongs to Maxim's μP reset supervisor product line, engineered specifically for low-power, high-accuracy voltage monitoring in space-constrained 2.5V/3.0V/3.3V embedded systems.
FAQ
What is the exact reset threshold voltage of the MXD1815XR23?
The MXD1815XR23 has a factory-set reset threshold of 2.31V with ±2.5% accuracy over the full –40°C to +105°C temperature range. This value is specified in the Electrical Characteristics table under "Reset Threshold" for suffix R23, and is optimized for reliable supervision of 2.5V, 3.0V, and 3.3V power rails.
Does the MXD1815XR23 include manual reset capability?
No, the MXD1815XR23 does not feature manual reset or push-button debounce functionality. That capability is exclusive to the MXD1813 and MXD1818 variants. The MXD1815XR23 provides only power-supply monitoring and automatic reset assertion based on VCC threshold crossing.
What package type and footprint does the MXD1815XR23 use?
The MXD1815XR23 is supplied in a 3-pin SC70 package (outline X3-2, land pattern 90-0208), measuring 2.0mm × 2.1mm. Its pinout is RESET (pin 1), VCC (pin 2), and GND (pin 3), matching standard SC70-3 footprints used across Maxim's reset supervisor family.
Is the MXD1815XR23 compatible with 5V systems?
No, the MXD1815XR23 is designed exclusively for 2.5V/3.0V/3.3V systems. Its reset threshold options (2.18V–3.06V) and electrical specifications are optimized for those rails. For 5V applications, refer to the MXD1810–MXD1813 series (e.g., MXD1810XR41 with 4.12V threshold).
What is the maximum supply voltage rating for the MXD1815XR23?
The MXD1815XR23 supports a supply voltage range of +1.0V to +5.5V. While it operates reliably down to +1.0V (ensuring RESET validity), the absolute maximum rating for VCC to GND is +6.0V per the Absolute Maximum Ratings table - exceeding this may cause permanent damage.
MXD1815XR23 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Active
- 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:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MXD1815XR23 FAQ
1.How can I place an order for MXD1815XR23 through Aetrix?
Please submit a Request for Quotation (RFQ) for MXD1815XR23 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 MXD1815XR23 reliable?
The price and inventory of MXD1815XR23 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXD1815XR23 is usually 5 days.
3.What payment methods are accepted for MXD1815XR23?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXD1815XR23 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXD1815XR23?
MXD1815XR23 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXD1815XR23 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 MXD1815XR23?
For technical support, including MXD1815XR23 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXD1815XR23 requirements.
6.How does Aetrix verify that MXD1815XR23 is sourced from the original manufacturer or authorized distributors?
All MXD1815XR23 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 MXD1815XR23 meets industry standards.
7.What is the process for return or replacement of MXD1815XR23?
All MXD1815XR23 units undergo pre-shipment inspection (PSI). If there is an issue with MXD1815XR23, 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 MXD1815XR23 part is unused and in its original packaging.
Return procedure for MXD1815XR23:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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