My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MXD1813UR41+T
- Part No.:
- MXD1813UR41+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
MXD1813UR41+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,023
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MXD1813UR41+T from Maxim Integrated is a low-power, open-drain, active-low microprocessor reset IC for +5V systems with factory-set 4.12V reset threshold, 100ms minimum reset timeout, debounced manual-reset input, and internal 5.5kΩ pullup resistor - used to ensure reliable power-up sequencing in embedded controllers and portable instrumentation.
For engineers reviewing the MXD1813UR41+T datasheet, MXD1813UR41+T pinout, MXD1813UR41+T application, or MXD1813UR41+T equivalent, key selection criteria include reset threshold accuracy (±2.5%), VCC operating range down to +1V, push-button debounce timing (1.5μs min pulse), transient immunity, and SOT23-3 package compatibility with DS181x footprints.
Technical Context
The MXD1813UR41+T integrates a precision voltage comparator monitoring VCC against a trimmed 4.12V threshold, an internal timer enforcing ≥100ms reset assertion after VCC recovery, and dedicated logic that detects and debounces external low pulses on the RESET pin lasting ≥1.5μs. It operates across -40°C to +105°C with guaranteed reset validity down to VCC = +1V.
Its open-drain RESET output includes an internal 5.5kΩ pullup to VCC and sinks up to 10mA at 0.4V, enabling direct interface with bidirectional μP reset pins without external components. The device rejects fast VCC transients via built-in immunity circuitry and draws only 4μA typical supply current at +3.6V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.12V (factory-trimmed, ±2.5% over temperature) - ensures reliable brownout detection for +5V systems |
| Reset Timeout Period | 100ms minimum - guarantees sufficient hold time for μP initialization during power-up |
| Supply Current | 4μA typical at +3.6V - enables battery-powered operation with minimal quiescent drain |
| Operating Voltage Range | +1.0V to +5.5V - supports valid reset signaling even during deep brownout conditions |
| Manual Reset Pulse Width | ≥1.5μs - debounces mechanical switch bounce while rejecting noise glitches |
| Output Type | Open-drain, active-low with internal 5.5kΩ pullup - eliminates need for external pullup and supports wired-OR reset buses |
| Package | SOT23-3 - industry-standard 3-pin footprint compatible with DS181x series and automated assembly |
Pinout & Package
SOT23-3 plastic surface-mount package (3.0mm × 1.4mm × 1.1mm), lead(Pb)-free, RoHS-compliant, rated for -40°C to +105°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (RESET) | Open-drain active-low reset output / manual reset input | Drives low during VCC brownout or external manual trigger; internal pullup holds high otherwise; accepts debounced low pulses ≥1.5μs |
| 2 (VCC) | Power supply and reset threshold monitor input | Supplies internal circuitry and serves as reference for voltage comparator; functional down to +1.0V |
| 3 (GND) | Ground reference | Return path for all internal currents and comparator reference; must be low-impedance for accurate threshold sensing |
Key Features
| Feature | Design Value |
|---|---|
| Debounced manual-reset input | Accepts ≥1.5μs low pulse on RESET pin to initiate 100ms reset - eliminates external RC debounce networks for pushbutton interfaces |
| Precision reset threshold | Factory-trimmed 4.12V with ±2.5% tolerance over full temperature range - ensures consistent brownout response in industrial environments |
| VCC transient immunity | Rejects negative-going VCC glitches up to defined duration/overdrive envelope - prevents spurious resets during switching noise |
| No external components required | Integrated pullup, comparator, timer, and debounce logic - reduces BOM count and PCB area vs discrete solutions |
| Low-power operation | 4μA typical ICC at +3.6V - extends battery life in portable equipment without sacrificing reset reliability |
Applications
| Industrial Controllers | Portable Medical Instruments |
|---|---|
|
Use Scenario: Power management in PLC I/O modules subjected to 24V DC supply fluctuations and EMI-rich factory floors. IC Role / Device Role / Timing Role: Monitors +5V rail derived from DC-DC converter; asserts active-low RESET to ARM Cortex-M7 MCU until stable. Use Value: Prevents firmware corruption during brownout by holding reset ≥100ms after VCC recovers above 4.12V, with immunity to 100ns transients. |
Use Scenario: Battery-powered handheld glucose meters requiring cold-start reliability and long shelf life. IC Role / Device Role / Timing Role: Supervises main LDO output feeding microcontroller and sensor interface; triggers reset on battery sag below 4.12V. Use Value: Draws only 4μA quiescent current and remains functional down to VCC = +1V - preserves battery charge while ensuring deterministic boot. |
| Set-Top Box Power Sequencing | Embedded Print Engine Control |
|
Use Scenario: Multi-rail power system where +5V must stabilize before enabling +3.3V and +1.2V rails in consumer STBs. IC Role / Device Role / Timing Role: Generates primary reset signal tied to +5V domain; RESET output gates enable signals to downstream regulators. Use Value: Open-drain output allows wired-OR with other supervisors; internal pullup avoids extra component while supporting 3.3V logic interfacing. |
Use Scenario: Thermal printhead driver board exposed to rapid on/off cycling and ambient temperature swings from 0°C to 70°C. IC Role / Device Role / Timing Role: Provides reset to motor control ASIC during AC adapter connection/disconnection events and thermal shutdown recovery. Use Value: Guaranteed operation from -40°C to +105°C and 4.12V threshold accuracy ensures consistent reset behavior across environmental extremes. |
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 | 4.63V reset threshold, no manual reset input, same SOT23-3 package and 140ms timeout | Lacks pushbutton debounce; suitable only for pure supply monitoring without user-initiated reset | Select when manual reset is unnecessary and higher threshold (4.63V) matches system margin requirements |
| TPS3808G33DBVR | 3.3V reset threshold, adjustable delay option, 1.6μA ICC, SOT23-6 package | Requires external capacitor for timeout tuning; incompatible pinout and lower threshold targets 3.3V systems | Choose for ultra-low power designs needing programmable delay or 3.3V-specific supervision |
Compared with MAX809TRD3+T and TPS3808G33DBVR, the MXD1813UR41+T uniquely combines 4.12V precision threshold, integrated manual-reset debounce, open-drain output with internal pullup, and SOT23-3 compatibility - making it optimal for cost-sensitive +5V embedded systems requiring both supply and pushbutton reset capability.
Availability
MXD1813UR41+T is available at Aetrix Electronics and suitable for industrial controllers, portable medical instruments, set-top boxes, and embedded print engine control requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MXD1813UR41+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 power, sensing, and interface applications, with emphasis on high-reliability, low-power solutions for industrial and computing markets.
The MXD1810–MXD1813/MXD1815–MXD1818 product line delivers compact, low-quiescent-current reset supervisors targeting space-constrained +5V and +3.3V embedded systems requiring robust power-on reset and manual reset functionality.
FAQ
What is the exact reset threshold voltage of the MXD1813UR41+T?
The MXD1813UR41+T has a factory-set reset threshold of 4.12V, with guaranteed tolerance of ±2.5% over the full operating temperature range (-40°C to +105°C). This value is confirmed in the Electrical Characteristics table under "Reset Threshold" for suffix R41, and applies specifically to the MXD1813UR41+T variant within the MXD1810–MXD1813 family.
Does the MXD1813UR41+T support manual reset via an external pushbutton?
Yes, the MXD1813UR41+T features a debounced manual-reset input on its RESET pin. Pulling RESET low for ≥1.5μs initiates a 100ms minimum reset timeout period. Internal circuitry filters mechanical switch bounce, eliminating the need for external RC networks - a capability confirmed in the General Description and Pin Descriptions sections for MXD1813/MXD1818 devices.
What is the output configuration of the MXD1813UR41+T RESET pin?
The MXD1813UR41+T uses an open-drain, active-low RESET output with an internal 5.5kΩ pullup resistor to VCC. This configuration allows wired-OR connections, supports bidirectional μP reset pins, and removes the need for an external pullup - as explicitly stated in the Pin Descriptions and Features sections for MXD1813/MXD1818 variants.
Can the MXD1813UR41+T operate reliably at very low supply voltages?
Yes, the MXD1813UR41+T is guaranteed to maintain valid RESET/RESET logic states down to VCC = +1.0V, as specified in the Absolute Maximum Ratings and Electrical Characteristics tables. This ensures deterministic reset behavior during deep brownout conditions common in battery-backed systems, and is a documented feature of the entire MXD1810–MXD1813/MXD1815–MXD1818 family.
What package type and footprint does the MXD1813UR41+T use?
The MXD1813UR41+T is supplied in a 3-pin SOT23 package (outline U3-1), with pin 1 = RESET, pin 2 = VCC, pin 3 = GND. It is pin-compatible with DS181x-series reset ICs and uses the standard SOT23-3 land pattern (90-0179), as confirmed in the Ordering Information and Package Information sections of the datasheet.
MXD1813UR41+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.12V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
MXD1813UR41+T FAQ
1.How can I place an order for MXD1813UR41+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MXD1813UR41+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 MXD1813UR41+T reliable?
The price and inventory of MXD1813UR41+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXD1813UR41+T is usually 5 days.
3.What payment methods are accepted for MXD1813UR41+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXD1813UR41+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXD1813UR41+T?
MXD1813UR41+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXD1813UR41+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 MXD1813UR41+T?
For technical support, including MXD1813UR41+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXD1813UR41+T requirements.
6.How does Aetrix verify that MXD1813UR41+T is sourced from the original manufacturer or authorized distributors?
All MXD1813UR41+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 MXD1813UR41+T meets industry standards.
7.What is the process for return or replacement of MXD1813UR41+T?
All MXD1813UR41+T units undergo pre-shipment inspection (PSI). If there is an issue with MXD1813UR41+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 MXD1813UR41+T part is unused and in its original packaging.
Return procedure for MXD1813UR41+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXD1813UR41+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…
