My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MXD1817XR31+
- Part No.:
- MXD1817XR31+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MXD1817XR31+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,177
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MXD1817XR31+ from Maxim Integrated is a low-power microprocessor reset supervisor IC in SC70-3 package, designed for +2.5V/+3.0V/+3.3V systems with 3.06V reset threshold, active-high push-pull RESET output, and guaranteed operation down to VCC = +1V. It provides 100ms minimum reset timeout, ±2.5% threshold accuracy over temperature, and 4μA supply current - ideal for portable battery-powered controllers and embedded μP monitoring.
For engineers reviewing the MXD1817XR31+ datasheet, MXD1817XR31+ pinout, MXD1817XR31+ application, or MXD1817XR31+ equivalent, key selection criteria include reset threshold (3.06V), output polarity (active-high), manual-reset capability (absent), package (SC70-3), and compatibility with brownout detection in space-constrained industrial and consumer electronics.
Technical Context
The MXD1817XR31+ implements a precision voltage comparator with internal reference to monitor VCC against a factory-trimmed 3.06V threshold (±2.5% over −40°C to +105°C), asserting RESET when VCC falls below this level. Its push-pull output drives high during reset assertion and remains asserted for ≥100ms after VCC recovers above threshold.
No manual-reset input is supported - unlike MXD1813/MXD1818 variants - and no internal debouncing circuitry is present. The device ignores fast transients on VCC and guarantees valid RESET logic state down to VCC = +1V, enabling reliable reset generation even during deep brownout conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.06V (factory-set, ±2.5% over −40°C to +105°C) - ensures deterministic reset initiation at defined supply sag point |
| Reset Timeout Period | 100ms min (VCC rising) - guarantees sufficient hold time for μP initialization before release |
| Supply Current | 4μA typical at +3.6V - enables multi-year battery life in always-on portable instrumentation |
| Operating Voltage Range | +1.0V to +5.5V - supports valid reset assertion down to near-dead-battery conditions |
| Output Type | Active-high push-pull - eliminates need for external pullup resistor and simplifies interface to μP reset inputs |
| Package | 3-pin SC70 (X3-2 outline) - 2.0 × 1.25 × 0.9mm footprint for ultra-dense PCB layouts |
| Temperature Range | −40°C to +105°C - qualified for industrial and extended-temperature embedded applications |
Pinout & Package
MXD1817XR31+ uses a 3-pin SC70 package (outline X3-2, land pattern 90-0208). Pin 1 is RESET (active-high push-pull output), Pin 2 is VCC (supply and threshold monitor input), and Pin 3 is GND. No exposed pad or auxiliary terminals are present.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull output - drives high during reset assertion; sinks current when deasserted; no external pullup required |
| 2 | VCC | Supply input and reset-threshold monitor node - powers internal circuitry and serves as reference for comparator |
| 3 | GND | Ground reference - must be connected to system ground plane for accurate threshold detection and noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Precision 3.06V reset threshold | Factory-trimmed ±2.5% over full temperature range - eliminates calibration overhead in production test |
| 100ms fixed reset timeout | Internally timed, no external capacitor needed - ensures consistent μP boot reliability across units and batches |
| Active-high push-pull RESET | Direct drive of μP reset pins requiring high-active assertion - removes dependency on external pullup networks |
| Low 4μA quiescent current | Enables use in energy-harvesting and coin-cell-powered devices without compromising battery lifetime |
| VCC = +1V reset validity | Guaranteed correct logic state down to near-zero supply - prevents spurious release during deep brownout recovery |
Applications
| Industrial Controllers | Portable Medical Devices |
|---|---|
Use Scenario: PLC I/O modules operating in harsh factory environments with fluctuating 3.3V rails. IC Role / Device Role / Timing Role: Monitors 3.3V VCC and asserts active-high RESET to ARM Cortex-M4-based controller during brownout events. Use Value: Prevents firmware corruption by holding processor in reset until stable 3.3V is restored for ≥100ms - critical for deterministic control loop restart. |
Use Scenario: Handheld glucose meters powered by CR2032 coin cells with voltage sag under load. IC Role / Device Role / Timing Role: Supervises 3.0V rail and triggers active-high reset when cell voltage drops below 3.06V during measurement burst. Use Value: Ensures clean boot after battery recovery, avoiding corrupted sensor calibration data due to marginal supply operation. |
| Smart Energy Meters | IoT Edge Gateways |
Use Scenario: DIN-rail mounted electricity meters exposed to wide ambient temperature swings (−25°C to +70°C). IC Role / Device Role / Timing Role: Provides brownout detection on 3.3V logic rail and asserts RESET to secure MCU during AC line dips. Use Value: Maintains ±2.5% threshold accuracy across temperature - eliminates false resets caused by thermal drift in meter firmware. |
Use Scenario: Cellular-connected gateway using 3.3V LDO with transient load spikes from LTE modem transmission. IC Role / Device Role / Timing Role: Detects sub-3.06V sags on 3.3V rail and holds active-high RESET for 100ms to prevent modem lockup during RF bursts. Use Value: Guarantees μP reset assertion even at VCC = +1V - ensures recovery from deep brownouts induced by shared power rail collapse. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD3+T | 3.08V threshold, SOT23-3, active-low open-drain output, no manual reset | Requires external pullup; incompatible with high-active reset inputs; same 100ms timeout | Select only if system design mandates active-low reset and SOT23 footprint is preferred |
| TPS3808G33DBVR | 3.3V threshold, SOT23-6, adjustable delay, 2.5μA IQ, active-low push-pull | Higher threshold (3.3V vs. 3.06V); different pinout; requires external timing capacitor for delay tuning | Choose when tighter threshold margin or programmable timeout is required - not drop-in compatible |
Compared with MXD1817XR31+, MAX809TRD3+T demands external biasing and lacks active-high drive, while TPS3808G33DBVR offers higher threshold and configurability but increases BOM count and layout complexity - MXD1817XR31+ delivers optimal balance of precision, simplicity, and SC70 size for fixed 3.06V +3.3V systems.
Availability
MXD1817XR31+ is available at Aetrix Electronics and suitable for industrial controllers, portable medical devices, smart energy meters, IoT edge gateways, and battery-powered instrumentation requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for MXD1817XR31+ 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, computing, and communications applications, with emphasis on power management, sensing, and interface solutions.
The MXD1810–MXD1818 family was developed specifically for low-power, space-constrained microprocessor reset supervision in portable and industrial systems - prioritizing accuracy, small footprint, and guaranteed operation across wide voltage and temperature extremes.
FAQ
What is the reset threshold voltage of the MXD1817XR31+?
The MXD1817XR31+ has a factory-set reset threshold of 3.06V, with ±2.5% accuracy guaranteed over the full operating temperature range of −40°C to +105°C. This value is trimmed during production and does not require external adjustment - it directly monitors the VCC supply and asserts the active-high RESET output when VCC falls below 3.06V.
Does the MXD1817XR31+ support manual reset functionality?
No, the MXD1817XR31+ does not include manual reset capability. Unlike the MXD1813/MXD1818 variants, it lacks debounced push-button detection circuitry and does not respond to external signals on the RESET pin. Its sole reset trigger is VCC falling below the 3.06V threshold, followed by a guaranteed 100ms minimum timeout period.
What package type and footprint does the MXD1817XR31+ use?
The MXD1817XR31+ is supplied in a 3-pin SC70 package (outline X3-2, land pattern 90-0208), measuring 2.0 × 1.25 × 0.9mm. It is lead(Pb)-free and RoHS-compliant, with top marking "AIE" per Maxim's marking code table. This compact footprint enables high-density placement in portable and space-limited PCB designs.
Can the MXD1817XR31+ operate reliably at very low supply voltages?
Yes, the MXD1817XR31+ guarantees correct RESET/RESET logic state down to VCC = +1.0V, as specified in its absolute maximum and operating characteristics. This ensures deterministic reset behavior during deep brownout conditions - critical for battery-powered systems where supply voltage may sag significantly before shutdown.
Is the RESET output of the MXD1817XR31+ push-pull or open-drain?
The MXD1817XR31+ features an active-high push-pull RESET output, meaning it actively drives high during reset assertion and sinks current when deasserted. This eliminates the need for an external pullup resistor and simplifies interface to microprocessors requiring high-active reset inputs - a key distinction from open-drain variants like MXD1816XR31+.
MXD1817XR31+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- SC-70, SOT-323
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.06V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active High
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-3
MXD1817XR31+ FAQ
1.How can I place an order for MXD1817XR31+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MXD1817XR31+ 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 MXD1817XR31+ reliable?
The price and inventory of MXD1817XR31+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXD1817XR31+ is usually 5 days.
3.What payment methods are accepted for MXD1817XR31+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXD1817XR31+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXD1817XR31+?
MXD1817XR31+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXD1817XR31+ 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 MXD1817XR31+?
For technical support, including MXD1817XR31+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXD1817XR31+ requirements.
6.How does Aetrix verify that MXD1817XR31+ is sourced from the original manufacturer or authorized distributors?
All MXD1817XR31+ 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 MXD1817XR31+ meets industry standards.
7.What is the process for return or replacement of MXD1817XR31+?
All MXD1817XR31+ units undergo pre-shipment inspection (PSI). If there is an issue with MXD1817XR31+, 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 MXD1817XR31+ part is unused and in its original packaging.
Return procedure for MXD1817XR31+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXD1817XR31+ 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…
