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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

Analog Devices Inc./Maxim Integrated DS1817R-10+T&R

Name: DS1817R-10+T&R
Brand: Analog Devices Inc./Maxim Integrated
SKU: DS1817R-10+T&R
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DS1817R-10+T&R

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Supervisors

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: DS1817R-10+T&R.pdf

Description:: IC SUPERVISOR 1 CHANNEL SOT23-3

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Product details

Overview

DS1817R-10+T&R from Maxim Integrated (now Analog Devices) is a precision voltage-monitoring supervisory IC that provides active-high reset signaling for microprocessors in 3.0V systems. It features a 10% V_CC trip point (2.80–2.97V), 150ms reset pulse width, push-pull output, and operates from -40°C to +85°C in SOT-23 package.

For engineers reviewing the DS1817R-10+T&R datasheet, DS1817R-10+T&R pinout, DS1817R-10+T&R application, or DS1817R-10+T&R equivalent, this device serves as a cost-effective, single-supply reset supervisor with guaranteed reset assertion during power-up, brownout, and power-down events in embedded control and industrial monitoring systems.

Technical Context

The DS1817R-10+T&R integrates a temperature-compensated voltage reference and comparator to detect V_CC deviations against its factory-trimmed 10% threshold. Its internal timing circuit ensures a minimum 100ms and typical 150ms active-high reset pulse after V_CC returns to tolerance.

It delivers rail-to-rail push-pull output drive (VOH ≥ V_CC − 0.1V, I_OL = +10mA), draws only 28–35µA quiescent current, and supports supply voltages from 1.2V to 5.5V - enabling use across 3.0V and 3.3V logic domains without external components.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Trip Point	2.80V to 2.97V (10% tolerance for 3.0V systems)
Reset Pulse Width	100–250ms (guaranteed ≥100ms; typical 150ms stabilization window)
Output Type	Push-pull active-high (no external pull-up required)
Supply Range	1.2V to 5.5V (supports 3.0V/3.3V rails with margin)
Quiescent Current	28–35µA (enables low-power always-on monitoring)
Operating Temp	-40°C to +85°C (industrial-grade thermal range)
Output Drive	I_OL = +10mA at 0.4V; VOH ≥ V_CC − 0.1V (direct interface to CMOS inputs)

Pinout & Package

SOT-23-3 surface-mount package (3.0mm × 1.7mm × 1.3mm body height), RoHS-compliant, tape-and-reel format (T&R).

Pin/Terminal	Circuit Role	Design Meaning
1 (RST)	Active-high reset output	Push-pull CMOS driver; asserts high during power fault and for 150ms post-recovery
2 (V_CC)	Power supply input	Monitored supply rail; also powers internal reference/comparator circuitry
3 (GND)	Ground reference	Common return path for supply and output; must be low-impedance for accurate threshold detection

Key Features

Feature	Design Value
Factory-trimmed 10% V_CC threshold	Enables precise brownout detection at 2.80–2.97V for 3.0V systems without calibration
Guaranteed 100ms minimum reset pulse	Ensures reliable microprocessor initialization even under marginal power recovery conditions
Push-pull output architecture	Eliminates need for external pull-up resistor, reducing BOM count and board space
Temperature-compensated reference	Maintains trip-point accuracy across -40°C to +85°C without drift-induced false resets
Ultra-low 28–35µA supply current	Permits continuous monitoring in battery-backed or energy-constrained applications

Applications

Industrial PLC Controller	Smart Meter Power Monitoring
Use Scenario: Power interruption detection during grid voltage sags or backup battery switchover. IC Role / Device Role / Timing Role: Supervisory reset generator asserting active-high signal to hold MCU in reset until stable 3.0V rail is confirmed. Use Value: Prevents corrupted firmware execution by guaranteeing ≥100ms reset hold time after V_CC recovery to 2.80V.	Use Scenario: Ensuring metering SoC remains held in reset during AC mains dropout or capacitor discharge decay. IC Role / Device Role / Timing Role: Voltage monitor with 10% threshold triggering RST high when 3.0V supply falls below 2.80V. Use Value: Matches smart meter spec requirement for 3.0V ±10% supply supervision with no external components.
Medical Sensor Node	POS Terminal Power Sequencing
Use Scenario: Maintaining safe shutdown state during transient power dips in portable diagnostic devices. IC Role / Device Role / Timing Role: Active-high reset supervisor interfacing directly to ARM Cortex-M0+ reset pin. Use Value: Push-pull output drives reset pin without pull-up, saving PCB area in space-constrained wearable form factors.	Use Scenario: Coordinating clean boot sequence after 3.3V rail stabilizes following cold start or hot-plug event. IC Role / Device Role / Timing Role: Delayed-release reset generator holding processor in reset for 150ms post-V_CC in-tolerance. Use Value: Eliminates need for RC-based reset timers, improving startup repeatability across temperature and unit variance.

Industrial PLC Controller

Smart Meter Power Monitoring

Use Scenario: Power interruption detection during grid voltage sags or backup battery switchover.

IC Role / Device Role / Timing Role: Supervisory reset generator asserting active-high signal to hold MCU in reset until stable 3.0V rail is confirmed.

Use Value: Prevents corrupted firmware execution by guaranteeing ≥100ms reset hold time after V_CC recovery to 2.80V.

Use Scenario: Ensuring metering SoC remains held in reset during AC mains dropout or capacitor discharge decay.

IC Role / Device Role / Timing Role: Voltage monitor with 10% threshold triggering RST high when 3.0V supply falls below 2.80V.

Use Value: Matches smart meter spec requirement for 3.0V ±10% supply supervision with no external components.

Medical Sensor Node

POS Terminal Power Sequencing

Use Scenario: Maintaining safe shutdown state during transient power dips in portable diagnostic devices.

IC Role / Device Role / Timing Role: Active-high reset supervisor interfacing directly to ARM Cortex-M0+ reset pin.

Use Value: Push-pull output drives reset pin without pull-up, saving PCB area in space-constrained wearable form factors.

Use Scenario: Coordinating clean boot sequence after 3.3V rail stabilizes following cold start or hot-plug event.

IC Role / Device Role / Timing Role: Delayed-release reset generator holding processor in reset for 150ms post-V_CC in-tolerance.

Use Value: Eliminates need for RC-based reset timers, improving startup repeatability across temperature and unit variance.

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage-monitoring reset applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS3123DQDBVR	Fixed 3.08V threshold (±1.5%), 200ms reset timeout, open-drain output	Requires external pull-up; tighter trip accuracy but less tolerant of 3.0V system variation	Select if higher trip-point precision and longer reset hold are prioritized over component count reduction
MAX6326UT29D3+	2.93V threshold (±1.5%), 140ms min reset pulse, push-pull output, same SOT-23-3 package	Nearly identical function and footprint; slightly lower trip point and shorter min pulse vs DS1817R-10+T&R	Drop-in alternative where 2.93V detection and 140ms hold meet system requirements

Compared with TPS3123DQDBVR and MAX6326UT29D3+, the DS1817R-10+T&R offers a purpose-fit 10% tolerance for nominal 3.0V rails, eliminates external biasing via push-pull output, and guarantees ≥100ms reset hold - making it optimal for cost-sensitive, space-constrained industrial and metering designs requiring robust brownout response.

Availability

DS1817R-10+T&R is available at Aetrix Electronics and suitable for industrial PLC controllers, smart meter power monitoring, medical sensor nodes, and POS terminal power sequencing requiring stable component supply and long-term lifecycle support.

Supply support for DS1817R-10+T&R 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

Analog Devices (via acquisition of Maxim Integrated) designs precision analog, mixed-signal, and power management ICs for industrial, automotive, and communications applications.

The DS1817R-10+T&R belongs to Maxim's EconoReset™ family of supervisory circuits, engineered specifically for low-cost, high-reliability power monitoring in 3.0V embedded systems without external passive components.

FAQ

What is the exact V_CC trip point range for DS1817R-10+T&R?

The DS1817R-10+T&R has a factory-trimmed V_CC trip point range of 2.80V to 2.97V, corresponding to a 10% tolerance around a nominal 3.0V supply. This specification is verified per the DC Electrical Characteristics table in the official Maxim Integrated datasheet and applies across the full -40°C to +85°C operating temperature range.

Does DS1817R-10+T&R require an external pull-up resistor on the RST pin?

No. The DS1817R-10+T&R features a push-pull active-high output stage capable of sourcing up to 350µA and sinking +10mA. This eliminates the need for an external pull-up resistor, simplifying design and reducing BOM count - a key advantage over open-drain reset supervisors like the TPS3123DQDBVR.

What is the guaranteed minimum reset pulse width for DS1817R-10+T&R?

The DS1817R-10+T&R guarantees a minimum reset pulse width of 100ms after V_CC returns to within tolerance, with a typical value of 150ms. This timing is internally generated and independent of external capacitors or resistors, ensuring consistent processor stabilization across units and temperatures.

Can DS1817R-10+T&R operate with a 3.3V supply?

Yes. The DS1817R-10+T&R supports supply voltages from 1.2V to 5.5V and functions correctly with 3.3V V_CC. However, its 10% trip point (2.80–2.97V) is optimized for 3.0V systems; using it on 3.3V rails may result in undetected brownouts unless the system tolerates operation down to ~2.97V before reset assertion.

Is DS1817R-10+T&R pin-compatible with other EconoReset variants like DS1817R-5 or DS1817R-20?

Yes. All DS1817R-x variants share identical SOT-23-3 pinout (RST/V_CC/GND), package dimensions, and electrical interface. Only the V_CC trip point differs: DS1817R-5 (2.98–3.15V), DS1817R-10 (2.80–2.97V), and DS1817R-20 (2.47–2.64V). No PCB changes are required when substituting between them.

DS1817R-10+T&R Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: EconoReset

Package/Case:: TO-236-3, SC-59, SOT-23-3

Packaging:: Tape & Reel (TR)

Product Status:: Active

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 ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

DS1817R-10+T&R FAQ

1.How can I place an order for DS1817R-10+T&R through Aetrix?

Please submit a Request for Quotation (RFQ) for DS1817R-10+T&R 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 DS1817R-10+T&R reliable?

The price and inventory of DS1817R-10+T&R are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1817R-10+T&R is usually 5 days.

3.What payment methods are accepted for DS1817R-10+T&R?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1817R-10+T&R transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DS1817R-10+T&R?

DS1817R-10+T&R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DS1817R-10+T&R 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 DS1817R-10+T&R?

For technical support, including DS1817R-10+T&R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1817R-10+T&R requirements.

6.How does Aetrix verify that DS1817R-10+T&R is sourced from the original manufacturer or authorized distributors?

All DS1817R-10+T&R 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 DS1817R-10+T&R meets industry standards.

7.What is the process for return or replacement of DS1817R-10+T&R?

All DS1817R-10+T&R units undergo pre-shipment inspection (PSI). If there is an issue with DS1817R-10+T&R, 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 DS1817R-10+T&R part is unused and in its original packaging.

Return procedure for DS1817R-10+T&R:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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