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Analog Devices Inc./Maxim Integrated DS1815-10
- Part No.:
- DS1815-10
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
DS1815-10.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,075
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Product details
Overview
DS1815-10 from Maxim Integrated (now Analog Devices) is a precision voltage-monitoring reset IC with push-pull output, designed to supervise 3.3V microprocessor power supplies. It asserts an active-low reset for 150ms after VCC returns to tolerance, features a 2.80–2.97V trip point, operates from -40°C to +85°C, and uses a temperature-compensated reference for ±10% accuracy.
For engineers reviewing the DS1815-10 datasheet, DS1815-10 pinout, DS1815-10 application, or DS1815-10 equivalent, key selection criteria include VCC trip threshold tolerance, reset timeout stability, push-pull drive capability, TO-92/SOT-23 package compatibility, and guaranteed operation down to 0V VCC during reset assertion.
Technical Context
The DS1815-10 integrates a precision bandgap voltage reference and comparator to detect VCC deviations relative to its factory-trimmed 10% threshold. Its internal timing circuit ensures a minimum 100ms and maximum 250ms reset pulse width after power-up recovery, independent of VCC slew rate.
It delivers push-pull output capable of sourcing 350µA at 2.4V and sinking 10mA at 0.4V, eliminating external pull-up resistors. The device remains functional across full VCC range (0V to 5.5V), with RST valid down to 0V VCC - critical for brown-out detection in low-power embedded systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 2.80V (min) to 2.97V (max); sets reset activation threshold for 3.3V supply monitoring |
| Reset Pulse Width | 100–250ms; guarantees processor stabilization time after VCC recovery |
| Operating Temp | -40°C to +85°C; qualified for industrial-grade embedded control environments |
| Supply Range | 0V to 5.5V; enables reset assertion even during deep brown-out or zero-VCC conditions |
| Output Type | Push-pull CMOS; eliminates need for external pull-up resistor and reduces BOM count |
| Quiescent Current | 28–35µA; supports ultra-low-power battery-backed or energy-harvesting applications |
Pinout & Package
DS1815-10 is available in TO-92 and SOT-23 packages, both with identical 3-pin configuration and pin mapping.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (TO-92) / 1 (SOT-23) | RST | Active-low push-pull reset output; drives logic-low directly without external components |
| 2 (TO-92) / 2 (SOT-23) | VCC | Power supply input; monitored voltage source; RST remains valid down to 0V on this pin |
| 3 (TO-92) / 3 (SOT-23) | GND | Ground reference for internal comparator and output stage; shared return path |
Key Features
| Feature | Design Value |
|---|---|
| 150ms Guaranteed Reset Timeout | Ensures microprocessor clocks and peripherals stabilize before release, preventing boot failures |
| 0V-to-5.5V VCC Operation | Supports reliable reset assertion during complete power collapse and gradual brown-out recovery |
| ±10% Trip Accuracy | Factory-trimmed threshold eliminates need for external calibration in cost-sensitive designs |
| Push-Pull Output Stage | Reduces component count by removing external pull-up resistor; simplifies PCB layout |
| Temperature-Compensated Reference | Maintains trip point stability over -40°C to +85°C without external compensation networks |
Applications
| Industrial PLC Controller | Smart Meter Power Supervision |
|---|---|
Use Scenario: Monitors 3.3V supply rail in programmable logic controllers exposed to wide ambient temperature swings and line transients. IC Role / Device Role / Timing Role: Voltage supervisor providing fail-safe reset initiation and 150ms hold-off to prevent spurious restarts during grid fluctuations. Use Value: Eliminates external RC timing network and improves long-term trip point drift performance vs. discrete solutions. | Use Scenario: Ensures secure firmware boot sequence in utility smart meters operating on battery backup during mains failure. IC Role / Device Role / Timing Role: Brown-out detector asserting reset until VCC recovers above 2.80V and holds stable for ≥100ms. Use Value: Guarantees reset remains asserted down to 0V VCC, enabling safe shutdown and nonvolatile state preservation. |
| Embedded Gateway Boot Management | IoT Sensor Node Power Sequencing |
Use Scenario: Coordinates startup of ARM Cortex-M host MCU and peripheral SoCs in edge gateway devices. IC Role / Device Role / Timing Role: Single-rail supervisor generating synchronized reset pulse across multiple voltage domains via logic-level translation. Use Value: Push-pull output drives downstream buffers directly, reducing propagation delay and improving timing margin. | Use Scenario: Manages cold-start reliability in battery-powered environmental sensors with intermittent solar charging. IC Role / Device Role / Timing Role: Low-quiescent-current (28µA) supervisor enabling >10-year battery life while maintaining precise 2.88V trip point. Use Value: Temperature-compensated reference avoids calibration drift over seasonal temperature cycles in uncontrolled deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-monitoring reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326–29D | Fixed 2.93V trip point; open-drain output; requires external pull-up | Lacks 0V-VCC validity; less suitable for deep brown-out detection | Prefer DS1815-10 when reset must remain asserted below 1V VCC or when minimizing external components |
| TPS3808G12 | Adjustable trip via external resistor divider; 200ms default timeout; higher quiescent current (1.1µA) | Requires design-in effort for threshold setting; not drop-in compatible | Choose DS1815-10 for fixed 10%-tolerance 3.3V supervision with zero-configuration deployment |
Compared with MAX6326–29D and TPS3808G12, DS1815-10 offers unique 0V-VCC reset validity, factory-trimmed 10% threshold, and push-pull output - delivering lower system-level BOM cost and higher reliability in unregulated or battery-depleted power scenarios.
Availability
DS1815-10 is available at Aetrix Electronics and suitable for industrial PLCs, smart metering systems, embedded gateways, and IoT sensor nodes requiring stable component supply and long-term lifecycle support.
Supply support for DS1815-10 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 high-performance analog, mixed-signal, and power management ICs for precision sensing, signal conditioning, and power integrity applications.
The DS1815-10 belongs to Maxim's EconoReset family - engineered for cost-sensitive, space-constrained microprocessor supervisory functions in industrial and consumer electronics where reliability and minimal external components are essential.
FAQ
What is the exact VCC trip point range for DS1815-10?
The DS1815-10 has a guaranteed VCC trip point range of 2.80V (minimum) to 2.97V (maximum) at +25°C, corresponding to its ±10% tolerance specification for 3.3V supply monitoring. This range is factory-trimmed using a temperature-compensated reference and remains stable across the full -40°C to +85°C operating temperature range. DS1815-10 maintains this accuracy without external calibration components.
Does DS1815-10 assert reset when VCC drops to 0V?
Yes, DS1815-10 asserts and maintains the active-low RST signal down to 0V on the VCC pin - a key differentiator from many competing supervisors. This ensures fail-safe reset behavior during complete power collapse or deep brown-out events. The DS1815-10 continues to function reliably in this state due to its internal charge pump and low-voltage design, making it ideal for battery-backed or energy-harvesting systems.
Can DS1815-10 replace DS1815-5 or DS1815-20 in the same footprint?
Yes, DS1815-10 shares identical TO-92 and SOT-23 pinouts and package dimensions with DS1815-5 and DS1815-20, enabling direct physical replacement. However, the trip thresholds differ: DS1815-5 is 2.98–3.15V, DS1815-10 is 2.80–2.97V, and DS1815-20 is 2.47–2.64V. System validation is required to confirm functional compatibility, as DS1815-10 triggers reset earlier on falling VCC than DS1815-5.
What is the maximum sink current capability of DS1815-10's RST output?
The DS1815-10 RST output can sink up to +10mA at 0.4V, enabling direct interface with standard TTL or CMOS inputs without level-shifting. This push-pull capability eliminates the need for an external pull-up resistor, reducing BOM count and PCB area. DS1815-10 also sources 350µA at 2.4V, supporting weak pull-up requirements in mixed-voltage systems.
Is DS1815-10 qualified for automotive applications?
No, DS1815-10 is specified for industrial temperature range (-40°C to +85°C) and is not AEC-Q100 qualified. It lacks automotive-specific screening, extended temperature testing, and fault-reporting features required for automotive ECUs. For automotive use, consider DS1815-10's automotive-grade counterparts such as MAX6326–29D with AEC-Q100 Grade 2 qualification - though DS1815-10 remains optimal for industrial and commercial embedded systems.
DS1815-10 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- EconoReset
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- 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 Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
DS1815-10 FAQ
1.How can I place an order for DS1815-10 through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1815-10 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 reliable?
The price and inventory of DS1815-10 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 is usually 5 days.
3.What payment methods are accepted for DS1815-10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1815-10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1815-10?
DS1815-10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1815-10 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?
For technical support, including DS1815-10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1815-10 requirements.
6.How does Aetrix verify that DS1815-10 is sourced from the original manufacturer or authorized distributors?
All DS1815-10 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 meets industry standards.
7.What is the process for return or replacement of DS1815-10?
All DS1815-10 units undergo pre-shipment inspection (PSI). If there is an issue with DS1815-10, 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 part is unused and in its original packaging.
Return procedure for DS1815-10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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