My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MXD1810XR46+T
- Part No.:
- MXD1810XR46+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MXD1810XR46+T.pdf
- Description:
- IC MPU RESET CIRC 4.62V SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,439
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MXD1810XR46+T from Maxim Integrated is a low-power microprocessor reset supervisor IC designed for +5V systems, featuring an open-drain active-low RESET output, factory-set 4.62V reset threshold (±2.5% over temperature), 100ms minimum reset timeout, and operation down to VCC = +1V. It monitors supply voltage integrity in embedded controllers and portable equipment to prevent erroneous code execution during power-up, brownout, or power-down.
For engineers reviewing the MXD1810XR46+T datasheet, MXD1810XR46+T pinout, MXD1810XR46+T application, or MXD1810XR46+T equivalent, key selection criteria include reset threshold accuracy, open-drain drive capability with internal 5.5kΩ pullup, transient immunity, guaranteed logic validity at low VCC, and SC70-3 package compatibility with space-constrained designs.
Technical Context
The MXD1810XR46+T implements a precision bandgap-based voltage comparator monitoring VCC against a trimmed 4.62V threshold, with hysteresis and transient rejection circuitry to suppress false resets from sub-µs negative-going glitches. Its internal timer ensures reset remains asserted for ≥100ms after VCC rises above threshold, independent of supply ramp rate.
This device belongs to the MXD1810–MXD1813 series for +5V systems and uses an open-drain RESET output with integrated 5.5kΩ pullup resistor-enabling direct interface to bidirectional µP reset pins without external components while maintaining compatibility with standard active-low reset logic families.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.62V ±2.5% over -40°C to +105°C - ensures reliable detection of +5V supply collapse before µP instability occurs |
| Reset Timeout Period | 100ms (min) - guarantees sufficient hold time for full µP initialization and peripheral stabilization |
| Supply Current | 4µA typical at +3.6V - enables multi-year battery life in portable applications |
| Operating Voltage Range | +1.0V to +5.5V - supports valid RESET assertion even during deep brownout conditions |
| Output Type | Open-drain active-low with 5.5kΩ internal pullup - eliminates need for external pullup and simplifies µP interface |
| Package | 3-pin SC70 - 2.0mm × 2.1mm footprint ideal for compact PCB layouts |
| Temperature Range | -40°C to +105°C - qualified for industrial and extended-temperature embedded environments |
Pinout & Package
MXD1810XR46+T is housed in a 3-pin SC70 package (outline X3-2), with pin 1 = RESET (open-drain active-low), pin 2 = VCC (supply input and threshold monitor), pin 3 = GND. The SC70 footprint measures 2.0mm × 2.1mm × 0.9mm (max height) and supports reflow soldering per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Open-drain active-low output; sinks current when asserted; pulled high internally to VCC via 5.5kΩ resistor |
| 2 | VCC | Primary supply input and analog reference for reset threshold comparator; monitored continuously |
| 3 | GND | Analog and digital ground reference; must be low-impedance connection to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| Precision reset threshold | Factory-trimmed 4.62V with ±2.5% tolerance across full temperature range - eliminates calibration overhead |
| No external components required | Integrated pullup, comparator, timer, and reference - reduces BOM count and board area by >3 components |
| Power-supply transient immunity | Rejects negative VCC glitches <1.5µs duration at 4.62V threshold overdrive - prevents spurious resets in noisy environments |
| Low operating current | 4µA typical at +3.6V - extends battery runtime in always-on monitoring applications |
| Valid reset output down to VCC = +1V | Guaranteed logic state integrity below normal operating voltage - ensures deterministic behavior during deep brownout |
Applications
| Computers and Controllers | Intelligent Instruments |
|---|---|
Use Scenario: Monitoring +5V supply rails in industrial PLCs and edge-computing gateways where undetected voltage sags cause firmware lockups. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low reset to ARM Cortex-M7 microcontrollers during brownout events. Use Value: Prevents corrupted register states and flash writes by enforcing 100ms minimum reset hold time after VCC recovery. | Use Scenario: Power sequencing and fault detection in handheld multimeters and oscilloscope front-ends powered by Li-ion batteries. IC Role / Device Role / Timing Role: Reset generator ensuring clean boot of MSP430 mixed-signal MCUs under variable load-induced voltage droop. Use Value: Enables reliable operation down to VCC = +1V, supporting graceful shutdown before battery depletion. |
| Set-Top Boxes | Printers |
Use Scenario: Ensuring robust power-on reset in consumer STBs with multiple DC-DC converters feeding SoC, memory, and tuner subsystems. IC Role / Device Role / Timing Role: Primary reset supervisor coordinating cold-start sequence for Broadcom BCM7xxx SoCs. Use Value: Open-drain output interfaces directly to SoC's bidirectional reset pin without external pullup, saving PCB space and cost. | Use Scenario: Managing reset timing in multifunction inkjet printers where motor startup causes transient dips on the +5V rail. IC Role / Device Role / Timing Role: Voltage monitor triggering reset to PIC18F67J60 microcontroller when VCC falls below 4.62V. Use Value: ±2.5% threshold accuracy ensures consistent trip point across temperature, eliminating field failures due to thermal drift. |
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 | 4.63V reset threshold, SOT23-3 package, 1.6µA supply current, no internal pullup - requires external 100kΩ pullup | Lacks integrated pullup; lower quiescent current but adds component and layout complexity | Prefer when ultra-low power (<2µA) dominates design priority and board space allows external resistor |
| TPS3808G33DBVR | 3.3V reset threshold, SOT23-6 package, adjustable delay, 1.8µA supply current, push-pull output | Fixed 3.3V threshold incompatible with +5V systems; requires different PCB layout due to 6-pin footprint | Not suitable for +5V applications; consider only if redesigning for 3.3V supply architecture |
Compared with MXD1810XR46+T, MAX809TRD3+T offers lower current draw but increases BOM and layout effort, while TPS3808G33DBVR targets different voltage domains and cannot replace MXD1810XR46+T in +5V systems without hardware revision.
Availability
MXD1810XR46+T is available at Aetrix Electronics and suitable for industrial controllers, intelligent instrumentation, and set-top box designs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MXD1810XR46+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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.
The MXD1810–MXD1813 family was designed specifically for cost-sensitive, space-constrained +5V microprocessor reset supervision in portable and industrial equipment, emphasizing low power, precision thresholding, and minimal external components.
FAQ
What is the exact reset threshold voltage of the MXD1810XR46+T and how tightly is it specified?
The MXD1810XR46+T has a factory-set reset threshold of 4.62V, with a guaranteed tolerance of ±2.5% over the full operating temperature range (-40°C to +105°C). This specification is confirmed in the Electrical Characteristics table of the official datasheet, where VTH is listed as 4.50V (min), 4.62V (typ), and 4.75V (max) at TA = -40°C to +105°C. The 4.62V nominal value corresponds to the "R46" suffix in the part number.
Does the MXD1810XR46+T include an internal pullup resistor on the RESET pin, and what is its value?
Yes, the MXD1810XR46+T features an internal pullup resistor on the open-drain RESET pin, with a nominal value of 5.5kΩ (min 3.5kΩ, max 7.5kΩ). This is explicitly stated in the Electrical Characteristics table under "Internal Pullup Resistor, Open-Drain" for MXD1811/MXD1816 devices, and confirmed by the Pin Descriptions section identifying MXD1810/MXD1815 variants as open-drain with internal pullup. The MXD1810XR46+T belongs to the MXD1810–MXD1813 series, which shares this open-drain configuration.
What is the minimum reset timeout period for the MXD1810XR46+T, and is it temperature-stable?
The MXD1810XR46+T guarantees a minimum reset timeout period of 100ms after VCC rises above the reset threshold. This parameter (tRP) is specified as 100ms (min), 150ms (typ), and 250ms (max) across temperature, and the Typical Operating Characteristics graph "RESET TIMEOUT PERIOD vs. TEMPERATURE" confirms stable performance - varying less than ±5% from 100ms across -40°C to +110°C for VCC = +5V. The fixed timeout is generated by an internal RC timer, not dependent on external components.
Can the MXD1810XR46+T operate reliably when the supply voltage drops below 2.0V?
Yes, the MXD1810XR46+T is guaranteed to maintain correct RESET/RESET logic state down to VCC = +1.0V, as stated in the Absolute Maximum Ratings and Electrical Characteristics tables. This ensures deterministic reset behavior during deep brownout conditions common in battery-powered systems. However, note that the internal pullup resistor and output sink strength degrade below +2.7V, so for applications requiring full drive capability at low VCC, external buffering may be needed - but logic validity itself is assured to +1V.
Is the MXD1810XR46+T compatible with mechanical push-button manual reset circuits?
No, the MXD1810XR46+T does not support manual reset functionality. Manual reset with debounced push-button detection is exclusive to the MXD1813 and MXD1818 variants (as clearly indicated in the Selector Guide and Features list). The MXD1810XR46+T belongs to the MXD1810–MXD1813 series but lacks the MR input circuitry - its RESET pin is solely an output, not an input. Attempting to drive RESET low externally will not trigger a reset pulse; it only responds to VCC monitoring.
MXD1810XR46+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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.62V
- 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
MXD1810XR46+T FAQ
1.How can I place an order for MXD1810XR46+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MXD1810XR46+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 MXD1810XR46+T reliable?
The price and inventory of MXD1810XR46+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXD1810XR46+T is usually 5 days.
3.What payment methods are accepted for MXD1810XR46+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXD1810XR46+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXD1810XR46+T?
MXD1810XR46+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXD1810XR46+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 MXD1810XR46+T?
For technical support, including MXD1810XR46+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXD1810XR46+T requirements.
6.How does Aetrix verify that MXD1810XR46+T is sourced from the original manufacturer or authorized distributors?
All MXD1810XR46+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 MXD1810XR46+T meets industry standards.
7.What is the process for return or replacement of MXD1810XR46+T?
All MXD1810XR46+T units undergo pre-shipment inspection (PSI). If there is an issue with MXD1810XR46+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 MXD1810XR46+T part is unused and in its original packaging.
Return procedure for MXD1810XR46+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXD1810XR46+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…
