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

Analog Devices Inc./Maxim Integrated DS1815-10+TR

Name: DS1815-10+TR
Brand: Analog Devices Inc./Maxim Integrated
SKU: DS1815-10+TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DS1815-10+TR

Manufacturer:: Analog Devices Inc./Maxim Integrated

Category:: Supervisors

Package:: TO-226-3, TO-92-3 (TO-226AA) (Formed Leads)

Datasheet:: DS1815-10+TR.pdf

Description:: IC SUPERVISOR ECONORESET W/ PP

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Product details

Overview

DS1815-10+TR from Maxim Integrated is a precision voltage-monitoring reset supervisor IC designed for microprocessor power-fail detection and reset generation. It features a 10% V_CC trip point (2.80–2.97 V), 150 ms reset pulse width, push-pull active-low RST output, -40°C to +85°C operation, and TO-92 package. It ensures reliable system restart after brownout in embedded control and industrial monitoring applications.

For engineers reviewing the DS1815-10+TR datasheet, DS1815-10+TR pinout, DS1815-10+TR application, or DS1815-10+TR equivalent, key selection criteria include V_CC trip accuracy, guaranteed reset timeout, push-pull drive capability, RoHS-compliant TO-92 packaging, and compatibility with 3.3 V systems requiring stable power-on reset sequencing.

Technical Context

The DS1815-10+TR integrates a temperature-compensated voltage reference and comparator to detect V_CC deviations beyond ±10% of nominal 3.3 V. Upon out-of-tolerance detection, it asserts an active-low reset signal and holds it for 100–250 ms after V_CC recovery - typ. 150 ms - ensuring processor stabilization.

Its push-pull output drives low-current loads directly without external pull-up, supporting I_OL = +10 mA and I_OH = 350 µA at V_CC = 2.7 V. Operating current is only 28–35 µA across 1.2–5.5 V supply range, enabling use in battery-backed and low-power systems.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CC Trip Point	2.80 V (min) to 2.97 V (max); precise 10% under-voltage threshold for 3.3 V rails
Reset Pulse Width	100–250 ms (typ. 150 ms); guarantees sufficient time for power and CPU stabilization post-recovery
Output Type	Push-pull active-low; eliminates need for external pull-up resistor, reduces BOM count
Supply Range	1.2 V to 5.5 V; supports wide input voltage flexibility including 3.3 V and 5 V systems
Quiescent Current	28–35 µA; enables long-term operation in always-on or energy-constrained applications
Operating Temp	-40°C to +85°C; qualified for industrial-grade environmental reliability
Output Drive	I_OL = +10 mA, I_OH = 350 µA; sufficient to directly interface with standard CMOS inputs

Pinout & Package

DS1815-10+TR is supplied in a RoHS-compliant TO-92 package (3-pin, through-hole). Pin assignment is standardized: Pin 1 = RST (active-low reset output), Pin 2 = V_CC (power supply input), Pin 3 = GND (ground reference).

Pin/Terminal	Circuit Role	Design Meaning
1	RST	Active-low open-drain/push-pull reset output; asserts during V_CC fault and holds for ≥100 ms after recovery
2	V_CC	Primary power supply input; monitors voltage level against internal 10% trip threshold
3	GND	Ground reference for internal reference and comparator; must be connected to system ground plane

Key Features

Feature	Design Value
Precision 10% V_CC monitoring	Guaranteed trip window of 2.80–2.97 V enables accurate brownout detection on 3.3 V supplies
Fixed 150 ms reset timeout	Ensures deterministic reset hold time regardless of V_CC slew rate or noise transients
Push-pull RST output	Eliminates external pull-up component and associated layout area, simplifying PCB design
Low 35 µA operating current	Minimizes standby power draw in battery-powered or energy-sensitive applications
Industrial temperature range	Validated operation from -40°C to +85°C supports deployment in harsh environments

Applications

Microcontroller Power-On Reset	Industrial Sensor Node Supervision
Use Scenario: Ensuring clean boot sequence for ARM Cortex-M or PIC microcontrollers after cold start or brownout. IC Role / Device Role / Timing Role: Voltage supervisor generating active-low reset pulse synchronized to V_CC stability. Use Value: Prevents erratic firmware execution by guaranteeing ≥150 ms reset assertion until supply and core logic stabilize.	Use Scenario: Monitoring 3.3 V rail in wireless sensor nodes deployed in factory automation or remote telemetry. IC Role / Device Role / Timing Role: Fault-detection supervisor triggering controlled shutdown or watchdog reset upon undervoltage. Use Value: Extends battery life via ultra-low 35 µA quiescent current while maintaining reliable brownout response.
POS Terminal Power Integrity	Legacy Industrial PLC Module
Use Scenario: Securing reliable startup and fault recovery in point-of-sale terminals with mixed 3.3 V/5 V logic. IC Role / Device Role / Timing Role: System-level reset generator with 10% trip tolerance matched to 3.3 V LDO output. Use Value: Avoids spurious resets from transient ripple using temperature-compensated reference and hysteresis-free detection.	Use Scenario: Retrofitting legacy programmable logic controller modules requiring TO-92-compatible reset supervision. IC Role / Device Role / Timing Role: Through-hole voltage monitor replacing obsolete discrete reset circuits. Use Value: Reduces board space and assembly cost by integrating reference, comparator, and timed reset into single TO-92 device.

Microcontroller Power-On Reset

Industrial Sensor Node Supervision

Use Scenario: Ensuring clean boot sequence for ARM Cortex-M or PIC microcontrollers after cold start or brownout.

IC Role / Device Role / Timing Role: Voltage supervisor generating active-low reset pulse synchronized to V_CC stability.

Use Value: Prevents erratic firmware execution by guaranteeing ≥150 ms reset assertion until supply and core logic stabilize.

Use Scenario: Monitoring 3.3 V rail in wireless sensor nodes deployed in factory automation or remote telemetry.

IC Role / Device Role / Timing Role: Fault-detection supervisor triggering controlled shutdown or watchdog reset upon undervoltage.

Use Value: Extends battery life via ultra-low 35 µA quiescent current while maintaining reliable brownout response.

POS Terminal Power Integrity

Legacy Industrial PLC Module

Use Scenario: Securing reliable startup and fault recovery in point-of-sale terminals with mixed 3.3 V/5 V logic.

IC Role / Device Role / Timing Role: System-level reset generator with 10% trip tolerance matched to 3.3 V LDO output.

Use Value: Avoids spurious resets from transient ripple using temperature-compensated reference and hysteresis-free detection.

Use Scenario: Retrofitting legacy programmable logic controller modules requiring TO-92-compatible reset supervision.

IC Role / Device Role / Timing Role: Through-hole voltage monitor replacing obsolete discrete reset circuits.

Use Value: Reduces board space and assembly cost by integrating reference, comparator, and timed reset into single TO-92 device.

Equivalent & Alternatives

The following parts are listed as comparable options for similar voltage supervisor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX809TRD1T1+	3.08 V fixed trip (±1.5%), 140 ms reset timeout, SOT-23-3 package	Higher trip accuracy but incompatible TO-92 footprint; requires PCB redesign	Select when tighter trip tolerance is critical and surface-mount assembly is preferred
TPS3808G12DBVR	1.2 V adjustable trip via external resistor divider, 200 ms timeout, SOT-23-6 package	Configurable threshold but larger package and higher BOM complexity	Select when flexible trip point tuning is required and board space allows SOT-23-6

Compared with MAX809TRD1T1+ and TPS3808G12DBVR, DS1815-10+TR offers direct TO-92 compatibility, fixed 10% trip optimized for 3.3 V rails, and lowest component count - making it ideal for cost-sensitive, through-hole industrial designs where 2.80–2.97 V detection and 150 ms reset timing are sufficient.

Availability

DS1815-10+TR is available at Aetrix Electronics and suitable for industrial control panels, embedded sensor gateways, and legacy equipment refurbishment requiring stable component supply, long-lifecycle support, and RoHS-compliant through-hole reset supervision.

Supply support for DS1815-10+TR 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 analog, mixed-signal, and power management ICs for industrial, communications, and computing applications.

The DS1815-10+TR belongs to Maxim's EconoReset™ family of low-cost voltage supervisors, engineered for simple, reliable power-on reset and brownout protection in cost-sensitive embedded systems.

FAQ

What is the exact V_CC trip point range for DS1815-10+TR?

The DS1815-10+TR has a guaranteed V_CC trip point range of 2.80 V (minimum) to 2.97 V (maximum), corresponding to a nominal 10% under-voltage threshold for a 3.3 V supply. This specification is validated over the full -40°C to +85°C operating temperature range and reflects the device's precision temperature-compensated reference design. DS1815-10+TR maintains this tolerance without external calibration or trimming components.

Does DS1815-10+TR require an external pull-up resistor on the RST pin?

No, DS1815-10+TR does not require an external pull-up resistor because it features a push-pull output stage on the RST pin. The output actively drives high (to V_CC) and low (to GND), eliminating dependency on external biasing. This reduces bill-of-materials count and simplifies layout - a key advantage over open-drain reset supervisors. DS1815-10+TR delivers up to +10 mA sink current and 350 µA source current at V_CC = 2.7 V.

What is the reset timeout duration of DS1815-10+TR, and is it adjustable?

The DS1815-10+TR provides a fixed reset timeout of 100–250 ms after V_CC returns to tolerance, with typical duration of 150 ms. This timing is internally generated and not user-adjustable. It ensures consistent power-supply and microprocessor stabilization across all operating conditions without external timing components. DS1815-10+TR uses this fixed delay to eliminate variability introduced by RC networks or system-dependent recovery behavior.

Is DS1815-10+TR compatible with 5 V systems?

Yes, DS1815-10+TR supports supply voltages from 1.2 V to 5.5 V, making it compatible with both 3.3 V and 5 V systems. However, its 10% trip point is calibrated for 3.3 V nominal operation (2.80–2.97 V), so in 5 V applications, it functions as a 2.8–2.97 V undervoltage detector - suitable for monitoring auxiliary or regulated 3.3 V rails derived from a 5 V source. DS1815-10+TR's internal reference remains stable across the full V_CC range.

What package type and lead finish does DS1815-10+TR use?

DS1815-10+TR is packaged in a 3-pin TO-92 case with RoHS-compliant, lead-free finish (indicated by the "+" suffix). Its mechanical drawing is 56-G0006-001A, and it is rated for through-hole mounting. The device meets JEDEC J-STD-020 moisture sensitivity level 1 and supports standard IR reflow and wave soldering processes. DS1815-10+TR's TO-92 form factor enables easy prototyping and compatibility with legacy through-hole manufacturing lines.

DS1815-10+TR Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc./Maxim Integrated

Series:: EconoReset

Package/Case:: TO-226-3, TO-92-3 (TO-226AA) (Formed Leads)

Packaging:: Bulk

Product Status:: Active

Programmable:: Not Verified

Type:: Power Supply Monitor

Number of Voltages Monitored:: 1

Voltage - Threshold:: 2.88V

Output:: Push-Pull, Totem Pole

Reset:: Active Low

Reset Timeout:: 100ms Minimum

Operating Temperature:: -40°C ~ 85°C

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: TO-92-3

DS1815-10+TR FAQ

1.How can I place an order for DS1815-10+TR through Aetrix?

Please submit a Request for Quotation (RFQ) for DS1815-10+TR 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 DS1815-10+TR reliable?

The price and inventory of DS1815-10+TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1815-10+TR is usually 5 days.

3.What payment methods are accepted for DS1815-10+TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1815-10+TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DS1815-10+TR?

DS1815-10+TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DS1815-10+TR 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 DS1815-10+TR?

For technical support, including DS1815-10+TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1815-10+TR requirements.

6.How does Aetrix verify that DS1815-10+TR is sourced from the original manufacturer or authorized distributors?

All DS1815-10+TR 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 DS1815-10+TR meets industry standards.

7.What is the process for return or replacement of DS1815-10+TR?

All DS1815-10+TR units undergo pre-shipment inspection (PSI). If there is an issue with DS1815-10+TR, 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 DS1815-10+TR part is unused and in its original packaging.

Return procedure for DS1815-10+TR:

1.Submit a request within 90 days.

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

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