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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 2.88V P-P 10% TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,966
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Product details
Overview
DS1815-10+ from Maxim Integrated is a precision voltage-monitoring reset IC with push-pull output, designed to automatically restart microprocessors after power failure. It asserts an active-low reset for 150ms after VCC returns to tolerance, features ±10% VCC trip point accuracy (2.80V–2.97V), operates from -40°C to +85°C, and uses a temperature-compensated reference for stable monitoring in embedded power management systems.
For engineers reviewing the DS1815-10+ datasheet, DS1815-10+ pinout, DS1815-10+ application, or DS1815-10+ equivalent, key selection criteria include guaranteed 150ms reset timeout, push-pull output drive capability (±10mA sink/source), ±10% supply threshold tolerance, TO-92/SOT-23 package compatibility, and operation down to 0V VCC during reset assertion.
Technical Context
The DS1815-10+ integrates a precision temperature-compensated voltage reference and comparator to detect VCC deviations beyond its factory-trimmed ±10% threshold (2.80V–2.97V). Its internal timing circuit ensures reset remains asserted for 100–250ms after VCC recovery, with typical 150ms duration.
It delivers a push-pull output capable of sourcing 350µA at VCC – 0.1V and sinking 10mA at 0.4V, eliminating external pull-up resistors. The device draws only 28–35µA quiescent current and supports VCC as low as 0V during power-down while maintaining valid RST assertion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 2.80V–2.97V (±10% tolerance); defines precise power-fail detection threshold for 3.3V systems |
| Reset Timeout | 100–250ms (typ. 150ms); ensures stable power and processor startup before release |
| Output Type | Push-pull CMOS; eliminates need for external pull-up resistor, reduces BOM count |
| Supply Current | 28–35µA; enables ultra-low-power operation in battery-backed or energy-constrained designs |
| Operating Temp | -40°C to +85°C; qualified for industrial-grade embedded and automotive body electronics |
| RST Sink/Source | Sinks 10mA @ 0.4V, sources 350µA @ VCC–0.1V; drives standard logic inputs directly |
Pinout & Package
DS1815-10+ is available in both TO-92 and SOT-23 packages. Both variants share identical 3-pin configuration and terminal functions.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (RST) | Active-low reset output | Push-pull driver; asserts low during power fault or startup; valid down to 0V VCC |
| 2 (VCC) | Power supply input | Accepts 0V–5.5V; powers internal reference, comparator, and timing circuitry |
| 3 (GND) | Ground reference | Return path for all internal circuits; must be connected to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| ±10% VCC threshold accuracy | Enables reliable power monitoring for 3.3V systems without external calibration or trimming |
| 150ms guaranteed reset hold time | Ensures microprocessor and power rails stabilize before release-no external RC timing needed |
| Push-pull output stage | Drives logic inputs directly; removes dependency on pull-up resistors and saves PCB space |
| 0V VCC reset assertion | Maintains valid RST signal even during deep brown-out or complete power collapse |
| Temperature-compensated reference | Stabilizes trip point across -40°C to +85°C; avoids false resets due to thermal drift |
Applications
| Industrial PLC Controller | Medical Diagnostic Handheld |
|---|---|
Use Scenario: Power interruption during firmware update or sensor data acquisition. IC Role / Device Role / Timing Role: Reset supervisor ensuring safe microcontroller reboot and memory integrity after brown-out. Use Value: 150ms reset hold prevents premature CPU execution before power rail stabilization and flash write completion. | Use Scenario: Battery-powered portable device experiencing voltage sag during high-current LED or display activation. IC Role / Device Role / Timing Role: Precision voltage monitor triggering controlled shutdown or alert before critical undervoltage. Use Value: ±10% trip accuracy (2.80V–2.97V) matches Li-ion discharge profile, enabling optimal runtime without false triggers. |
| Automotive Body Control Module | Smart Energy Meter |
Use Scenario: Load dump or cold-crank event causing transient VCC dip below 3.0V. IC Role / Device Role / Timing Role: Fault-tolerant reset generator asserting RST until regulated 3.3V rail recovers and settles. Use Value: Push-pull output drives MCU reset pin directly; no external components required for noise-immune interface. | Use Scenario: Mains power loss followed by backup capacitor discharge during meter data logging. IC Role / Device Role / Timing Role: Brown-out detector holding microcontroller in reset until backup supply reaches safe operating level. Use Value: Valid RST assertion down to 0V VCC ensures deterministic reset behavior during full capacitor depletion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-monitoring reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SEUR+T | ±1.5% threshold accuracy (2.93V), 240ms reset timeout, open-drain output | Requires external pull-up; tighter threshold but longer timeout may delay system boot | Preferred when higher accuracy and longer reset hold are acceptable and board space allows pull-up resistor |
| TPS3808G12DBVR | Adjustable threshold (via resistor divider), 200ms timeout, push-pull output, 1.8–6V VCC range | Configurable trip point enables multi-rail support but adds component count and layout complexity | Chosen when system requires flexible VCC monitoring across multiple supply voltages |
Compared with MAX809SEUR+T and TPS3808G12DBVR, the DS1815-10+ offers fixed ±10% accuracy optimized for 3.3V systems, guaranteed 150ms reset hold, and true push-pull simplicity-reducing BOM count and layout overhead where precision beyond ±10% is unnecessary.
Availability
DS1815-10+ is available at Aetrix Electronics and suitable for industrial control, medical handheld devices, and automotive body electronics requiring stable component supply and long-term availability.
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
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in analog, mixed-signal, and power management ICs for industrial, automotive, and computing applications.
The DS1815-10+ belongs to Maxim's EconoReset family-designed for cost-sensitive, space-constrained embedded systems needing reliable, single-supply reset supervision without external timing components.
FAQ
What is the exact VCC trip point range for DS1815-10+?
The DS1815-10+ has a factory-trimmed VCC trip point range of 2.80V to 2.97V, corresponding to ±10% tolerance around a nominal 3.3V supply. This specification is guaranteed over the full -40°C to +85°C operating temperature range and is based on internal temperature-compensated reference circuitry-not external components.
Does DS1815-10+ require an external pull-up resistor on the RST pin?
No, DS1815-10+ does not require an external pull-up resistor because it features a push-pull output stage. The RST pin actively drives high (to VCC – 0.1V) and low (to 0.4V), enabling direct connection to standard CMOS/TTL reset inputs without additional components-reducing BOM count and PCB area.
How long is the reset pulse duration of DS1815-10+ after VCC recovery?
The DS1815-10+ holds the RST pin active low for 100ms to 250ms after VCC returns to within tolerance, with a typical duration of 150ms. This guaranteed minimum hold time ensures sufficient stabilization of both the power supply and connected microprocessor before release-no external timing elements are needed.
Can DS1815-10+ operate with VCC below 1.0V?
Yes, DS1815-10+ maintains valid RST assertion down to 0V VCC, making it suitable for deep brown-out detection and controlled shutdown scenarios. While functional operation (e.g., internal reference stability) is specified from VCC = 0V to 5.5V, the device continues asserting reset even as VCC collapses fully-ensuring deterministic behavior during power failure.
What package options are available for DS1815-10+?
DS1815-10+ is offered in two industry-standard packages: 3-pin TO-92 (through-hole) and 3-pin SOT-23 (surface-mount). Both share identical pinout (RST-VCC-GND), electrical specifications, and thermal performance. The SOT-23 variant provides space savings for compact PCB layouts, while TO-92 supports manual assembly and prototyping.
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:
- 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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