My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MXD1817XR29+T
- Part No.:
- MXD1817XR29+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- SC-70, SOT-323
- Datasheet:
-
MXD1817XR29+T.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SC70-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MXD1817XR29+T from Maxim Integrated is a low-power microprocessor reset supervisor IC in SC70-3 package, featuring active-high push-pull RESET output, factory-set 2.88V reset threshold (±2.5% over temperature), 100ms minimum reset timeout, and operation down to VCC = +1V. It monitors +2.5V/+3.0V/+3.3V power rails in portable embedded systems requiring reliable brownout detection without external components.
For engineers reviewing the MXD1817XR29+T datasheet, MXD1817XR29+T pinout, MXD1817XR29+T application, or MXD1817XR29+T equivalent, key selection criteria include reset threshold accuracy, manual-reset debounce capability (not present in this variant), open-drain vs. push-pull output logic polarity, and compatibility with battery-powered μP systems operating at 1.2–5.5V supply range.
Technical Context
The MXD1817XR29+T implements a precision bandgap-based voltage comparator with hysteresis to detect VCC falling below 2.88V, triggering an active-high RESET signal that remains asserted for ≥100ms after VCC recovers above threshold. Its BiCMOS process enables 4μA typical supply current and guaranteed functionality down to VCC = +1V.
Unlike MXD1813/MXD1818 variants, MXD1817XR29+T lacks manual-reset input debouncing circuitry and does not support external push-button assertion of reset; it relies solely on VCC monitoring. The push-pull output drives high actively (IOH ≥ 350μA) and low passively via internal transistor sink (IOL ≥ 10mA at VOUT = 0.4V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.88V ±2.5% over -40°C to +105°C - ensures reliable brownout detection for 3.0V/3.3V systems without false triggers |
| Reset Timeout Period | 100ms minimum - guarantees sufficient μP initialization time after power recovery | Supply Voltage Range | 1.2V to 5.5V - supports operation during deep brownout and full rail conditions |
| Supply Current | 4μA typical at +3.6V - enables multi-year battery life in portable equipment |
| Output Type | Active-high push-pull - eliminates need for external pullup resistor and simplifies interface to μP reset inputs expecting high-active assertion |
| Operating Temperature | -40°C to +105°C - qualified for industrial and extended-temperature embedded applications |
| Package | 3-pin SC70 - 2.0mm × 1.25mm footprint ideal for space-constrained PCB layouts |
Pinout & Package
MXD1817XR29+T is housed in a 3-pin SC70 package (outline X3-2, land pattern 90-0208), with 0.65mm pin pitch and exposed pad not present. Pin 1 is RESET (active-high push-pull), Pin 2 is VCC (supply and threshold monitor input), and Pin 3 is GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RESET | Active-high push-pull output - asserts logic high during reset condition; sinks current when low, sources current when high; no external pullup required |
| 2 | VCC | Power supply input and reset threshold reference - supplies internal circuitry and provides voltage for comparator monitoring |
| 3 | GND | Analog/digital ground reference - must be connected to system ground plane for accurate threshold detection and noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Precision 2.88V reset threshold | Factory-trimmed ±2.5% tolerance over full temperature range ensures consistent brownout response across environmental conditions |
| 100ms fixed reset timeout | Internally timed delay prevents premature μP release before power stabilization and clock lock |
| 1.2V to 5.5V supply range | Valid operation down to 1.2V allows use in ultra-low-voltage subsystems and battery-depleted scenarios |
| 4μA typical supply current | Enables integration into always-on monitoring circuits without impacting system standby power budget |
| Push-pull active-high RESET | Directly interfaces with μPs requiring high-active reset signals (e.g., certain ARM Cortex-M and PIC variants) without level-shifting or external logic |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered wearable ECG sensor continuously monitors supply voltage during intermittent BLE transmission bursts. IC Role / Device Role / Timing Role: MXD1817XR29+T asserts active-high RESET if Li-ion cell voltage drops below 2.88V, halting firmware execution until stable 3.0V rail resumes. Use Value: Prevents corrupted memory writes and state-machine faults during brownout, eliminating need for external RC timing network or supervisory MCU. | Use Scenario: DIN-rail mounted I/O module operates in factory environments with fluctuating 24VDC-derived 3.3V logic rails subject to motor-switching transients. IC Role / Device Role / Timing Role: MXD1817XR29+T monitors the 3.3V domain and holds controller in reset for ≥100ms after transient-induced dip recovery. Use Value: Guarantees deterministic restart after line disturbances, avoiding spurious digital output toggling or analog ADC misreads. |
| Smart Energy Meters | Automotive Body Control Units |
Use Scenario: Revenue-grade electricity meter uses supercapacitor backup during AC mains loss; main 3.3V rail sags slowly during transition. IC Role / Device Role / Timing Role: MXD1817XR29+T detects sag below 2.88V and asserts RESET to freeze metering registers and initiate safe shutdown sequence. Use Value: Ensures data integrity during power-fail events without adding BOM cost or board area for discrete comparators and timers. | Use Scenario: BCM manages door locks, lighting, and window controls powered by vehicle battery (9V–16V), regulated to 3.3V with wide transient tolerance. IC Role / Device Role / Timing Role: MXD1817XR29+T supervises the 3.3V microcontroller supply, asserting RESET during cranking-induced dips below 2.88V. Use Value: Maintains functional safety by preventing erratic behavior during engine start, meeting ISO 16750-2 pulse test requirements for reset robustness. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset supervision applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD29+T | Same 2.88V threshold, SOT23-3 package, but active-low open-drain output with internal 5.5kΩ pullup | Requires pullup-compatible μP reset input; less suitable for high-active assertion without inversion logic | Select when board layout already accommodates open-drain topology or bidirectional reset pins |
| TPS3808G33DBVR | 2.93V threshold (±0.5%), 350ms timeout, 1.4μA quiescent current, SOT23-5 with manual reset input | Includes dedicated manual reset pin and longer timeout; higher accuracy but larger footprint and different pin count | Select when system requires field-serviceable reset button or tighter threshold tolerance than ±2.5% |
Compared with MAX809TRD29+T and TPS3808G33DBVR, MXD1817XR29+T offers the smallest footprint (SC70-3), lowest component count (no external pullup), and optimal balance of accuracy, timeout, and active-high drive for compact 3.3V μP systems where manual reset is handled externally.
Availability
MXD1817XR29+T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, smart energy meters, and automotive body control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MXD1817XR29+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 industrial, communications, computing, and consumer applications.
The MXD1810–MXD1818 family was developed specifically for low-power, space-constrained microprocessor reset supervision in battery-operated and harsh-environment embedded systems, emphasizing minimal external components and guaranteed operation down to 1V.
FAQ
What is the exact reset threshold voltage of MXD1817XR29+T and how tightly is it specified?
The MXD1817XR29+T has a factory-set nominal reset threshold of 2.88V, with 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 under "Reset Threshold" for suffix R29, ensuring consistent brownout detection across environmental stress without calibration.
Does MXD1817XR29+T support manual reset via an external pushbutton?
No, MXD1817XR29+T does not support manual reset. Only MXD1813 and MXD1818 variants in the family include debounced manual-reset detection on the RESET pin. MXD1817XR29+T is designed exclusively for VCC-supply monitoring and asserts reset solely based on voltage threshold crossing.
What output configuration does MXD1817XR29+T use and why does it matter for system design?
MXD1817XR29+T features an active-high push-pull RESET output. This means it actively drives the RESET line high during reset and pulls it low otherwise-eliminating the need for an external pullup resistor. It directly interfaces with microprocessors requiring high-active reset assertion, simplifying schematic design and reducing BOM count compared to open-drain alternatives like MXD1816XR29+T.
Can MXD1817XR29+T operate reliably when VCC drops below 2.0V?
Yes, MXD1817XR29+T is guaranteed to maintain valid RESET/RESET logic states down to VCC = +1.0V (minimum specified), and functional operation is ensured from VCC = +1.2V to +5.5V. This makes it suitable for battery-powered applications where supply voltage decays gradually, such as during lithium coin-cell discharge or supercapacitor backup scenarios.
What package type and dimensions does MXD1817XR29+T use, and is it RoHS-compliant?
MXD1817XR29+T uses the 3-pin SC70 package (outline X3-2), measuring 2.0mm × 1.25mm × 0.9mm with 0.65mm pin pitch. The "+T" suffix explicitly denotes lead(Pb)-free, RoHS-compliant packaging per Maxim's ordering convention, verified in the Package Information section of the datasheet.
MXD1817XR29+T 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:
- 2.88V
- 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
MXD1817XR29+T FAQ
1.How can I place an order for MXD1817XR29+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MXD1817XR29+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 MXD1817XR29+T reliable?
The price and inventory of MXD1817XR29+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MXD1817XR29+T is usually 5 days.
3.What payment methods are accepted for MXD1817XR29+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MXD1817XR29+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MXD1817XR29+T?
MXD1817XR29+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MXD1817XR29+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 MXD1817XR29+T?
For technical support, including MXD1817XR29+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MXD1817XR29+T requirements.
6.How does Aetrix verify that MXD1817XR29+T is sourced from the original manufacturer or authorized distributors?
All MXD1817XR29+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 MXD1817XR29+T meets industry standards.
7.What is the process for return or replacement of MXD1817XR29+T?
All MXD1817XR29+T units undergo pre-shipment inspection (PSI). If there is an issue with MXD1817XR29+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 MXD1817XR29+T part is unused and in its original packaging.
Return procedure for MXD1817XR29+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MXD1817XR29+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…
