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Analog Devices Inc./Maxim Integrated DS1813R-15+T&R
- Part No.:
- DS1813R-15+T&R
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
DS1813R-15+T&R.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,520
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Product details
Overview
DS1813R-15+T&R from Maxim Integrated is a precision voltage-monitoring reset IC with pushbutton reset capability, designed for microprocessor supervision in 5V systems. It features a 4.13V typical VCC trip point (±15% tolerance), 150ms reset timeout, open-drain RST output with internal 5.5kΩ pullup, and operates from -40°C to +85°C in SOT-23 package.
For engineers reviewing the DS1813R-15+T&R datasheet, DS1813R-15+T&R pinout, DS1813R-15+T&R application, or DS1813R-15+T&R equivalent, key selection criteria include reset threshold accuracy, pushbutton debounce timing, supply current (<40µA), open-drain drive strength (10mA sink), and compatibility with 5V microcontroller reset inputs.
Technical Context
The DS1813R-15+T&R integrates a temperature-compensated voltage reference and comparator to detect VCC deviations beyond ±15% of nominal 5V (4.00–4.24V trip range). Its dual-mode operation supports both power-fail detection and manual reset via external pushbutton connected to the RST pin.
Upon VCC dropout or pushbutton assertion, the device asserts active-low RST within 2–5µs and holds it low for 100–300ms (typ. 150ms) after recovery or release. The internal 5.5kΩ pullup enables direct interface to standard CMOS reset inputs without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 4.13V typical (4.00–4.24V range); ensures reliable reset activation when 5V rail drops below 4.0V |
| Reset Timeout | 150ms typical; provides sufficient stabilization time for microprocessor and power supply post-recovery |
| Supply Current | 30–40µA; enables ultra-low-power system supervision without burdening standby power budget |
| Output Sink Current | 10mA at 0.4V; guarantees robust logic-low assertion into standard microcontroller reset pins |
| Operating Temp | -40°C to +85°C; supports industrial-grade deployment in embedded control and instrumentation |
| Internal Pullup | 5.5kΩ nominal; eliminates need for external resistor while ensuring proper VOH under light load |
| Pushbutton Detect | 1µs minimum low pulse; allows fast, noise-immune manual reset initiation |
Pinout & Package
SOT-23 surface-mount package (3-pin, JEDEC MO-178AA), footprint-compatible with industry-standard 3-pin supervisory ICs and optimized for space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST | Active-Low Reset Output | Open-drain output requiring external pullup or relying on internal 5.5kΩ resistor; sinks up to 10mA |
| VCC | Power Supply Input | Accepts 1.2V–5.5V; powers internal reference, comparator, and timing circuitry |
| GND | Ground Reference | System ground return path for all internal analog and digital functions |
Key Features
| Feature | Design Value |
|---|---|
| ±15% VCC threshold accuracy | Guarantees consistent reset activation across temperature and process variation in 5V systems |
| Integrated 5.5kΩ pullup resistor | Reduces BOM count by eliminating external pullup component for most microcontroller interfaces |
| 150ms reset hold time (power-up & pushbutton) | Meets common microprocessor minimum reset duration requirements without external RC timing |
| 1µs pushbutton detect threshold | Enables reliable manual reset even with contact bounce or slow-switching mechanical buttons |
| 30–40µA quiescent current | Supports battery-backed or energy-harvesting applications where standby power is critical |
Applications
| Industrial PLC Controller | Smart Metering Module |
|---|---|
Use Scenario: Microcontroller-based programmable logic controller subjected to unstable 5V DC input from DIN-rail power supplies. IC Role / Device Role / Timing Role: Voltage supervisor generating precise reset signal during brownout events and enabling field-service manual reset via front-panel button. Use Value: Prevents firmware corruption during undervoltage conditions and ensures deterministic boot sequence after power recovery or operator-initiated restart. | Use Scenario: Electricity meter with real-time clock and metrology ASIC powered from isolated 5V rail derived from AC mains. IC Role / Device Role / Timing Role: Primary reset generator asserting active-low signal to MCU and RTC upon VCC deviation >15%, with pushbutton support for calibration mode entry. Use Value: Eliminates need for discrete voltage divider + comparator + timer circuit, reducing board area and qualification effort. |
| Point-of-Sale Terminal | Networked Sensor Node |
Use Scenario: Retail terminal using ARM Cortex-M microcontroller and USB-powered 5V supply prone to transient dips during peripheral hot-plug. IC Role / Device Role / Timing Role: System-level reset supervisor detecting sub-4.0V excursions and providing 150ms reset pulse to prevent partial instruction execution. Use Value: Ensures deterministic reboot behavior without software watchdog intervention, improving field reliability. | Use Scenario: LoRaWAN sensor node with ultra-low-power MCU operating intermittently on 5V from solar-charged battery. IC Role / Device Role / Timing Role: Low-quiescent-current reset monitor maintaining system integrity during battery voltage sag, with manual reset for firmware update mode. Use Value: Enables <40µA continuous supervision current, extending battery life while guaranteeing safe boot after voltage recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809SEUR+T | Fixed 3.08V reset threshold; no pushbutton monitoring; 140ms reset timeout | Designed for 3.3V systems only; lacks manual reset functionality | Select when supervising 3.3V MCUs without need for external reset button interface |
| TPS3808G15DBVR | Adjustable threshold via external resistor; 200ms reset timeout; higher 12µA IQ | Requires external components for threshold setting; supports wider VCC range (0.8–6V) | Choose for flexible threshold tuning or multi-rail supervision where DS1813R-15+T&R's fixed 4.13V is insufficient |
Compared with MAX809SEUR+T and TPS3808G15DBVR, the DS1813R-15+T&R uniquely combines fixed 5V-system optimization, integrated pushbutton support, and ultra-low 40µA supply current - making it optimal for cost-sensitive, space-constrained 5V microcontroller reset applications requiring manual override.
Availability
DS1813R-15+T&R is available at Aetrix Electronics and suitable for industrial automation, smart metering, point-of-sale terminals, and networked sensor nodes requiring stable component supply and long-term manufacturability.
Supply support for DS1813R-15+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
Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for industrial, communications, and computing applications.
The DS1813R-15+T&R belongs to Maxim's EconoReset family of low-cost, single-supply voltage supervisors targeting microprocessor reset and power-fail detection in cost-sensitive embedded systems.
FAQ
What is the exact reset threshold voltage for DS1813R-15+T&R?
The DS1813R-15+T&R has a guaranteed VCC trip point range of 4.00V to 4.24V, with a typical value of 4.13V. This ±15% tolerance is factory-trimmed and specified over the full -40°C to +85°C operating temperature range. The DS1813R-15+T&R uses an internal temperature-compensated reference to maintain threshold stability across environmental conditions.
Does DS1813R-15+T&R require an external pullup resistor on the RST pin?
No, the DS1813R-15+T&R includes an internal 5.5kΩ pullup resistor on the RST pin, enabling direct connection to standard CMOS microcontroller reset inputs without external components. This feature reduces BOM count and PCB area. The DS1813R-15+T&R's open-drain output can sink up to 10mA, supporting common reset input loading conditions.
How does the pushbutton reset function work on DS1813R-15+T&R?
The DS1813R-15+T&R monitors the RST pin for external low pulses: pulling RST low for ≥1µs triggers a reset cycle, and the output remains active low for 100–300ms (typically 150ms) after release. This eliminates need for external debounce circuitry. The DS1813R-15+T&R's internal timing ensures reliable manual reset regardless of switch bounce characteristics.
What is the maximum supply voltage rating for DS1813R-15+T&R?
The DS1813R-15+T&R supports a VCC supply range of 1.2V to 5.5V, with absolute maximum rating of +7.0V. Operation above 5.5V is not recommended and may cause permanent damage. The DS1813R-15+T&R is specifically optimized for 5V systems, with its 4.13V trip point calibrated for nominal 5V rails.
Is DS1813R-15+T&R compatible with TO-92 and SOT-23 packages?
The DS1813R-15+T&R is specified and qualified for SOT-23 packaging only, as indicated by the "R" suffix and tape-and-reel (T&R) designation. While the DS1813 family includes TO-92 variants (e.g., DS1813R-15+), the DS1813R-15+T&R is exclusively offered in SOT-23 for automated assembly and high-density PCB layouts.
DS1813R-15+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:
- 4.13V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
DS1813R-15+T&R FAQ
1.How can I place an order for DS1813R-15+T&R through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1813R-15+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 DS1813R-15+T&R reliable?
The price and inventory of DS1813R-15+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 DS1813R-15+T&R is usually 5 days.
3.What payment methods are accepted for DS1813R-15+T&R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1813R-15+T&R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1813R-15+T&R?
DS1813R-15+T&R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1813R-15+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 DS1813R-15+T&R?
For technical support, including DS1813R-15+T&R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1813R-15+T&R requirements.
6.How does Aetrix verify that DS1813R-15+T&R is sourced from the original manufacturer or authorized distributors?
All DS1813R-15+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 DS1813R-15+T&R meets industry standards.
7.What is the process for return or replacement of DS1813R-15+T&R?
All DS1813R-15+T&R units undergo pre-shipment inspection (PSI). If there is an issue with DS1813R-15+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 DS1813R-15+T&R part is unused and in its original packaging.
Return procedure for DS1813R-15+T&R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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