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Analog Devices Inc./Maxim Integrated DS1817-10
- Part No.:
- DS1817-10
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
DS1817-10.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,565
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Product details
Overview
DS1817-10 from Maxim Integrated (now Analog Devices) is a precision voltage-monitoring supervisory IC that provides active-high reset assertion during VCC undervoltage conditions. It features a 2.80–2.97 V trip point, 150 ms reset timeout, push-pull output, and operates from -40°C to +85°C - used for reliable power-on reset in 3.0 V microprocessor systems.
For engineers reviewing the DS1817-10 datasheet, DS1817-10 pinout, DS1817-10 application, or DS1817-10 equivalent, key selection criteria include trip point tolerance (±10%), reset timing consistency, active-high output drive capability, and compatibility with TO-92/SOT-23 footprint constraints in space-constrained embedded designs.
Technical Context
The DS1817-10 implements a temperature-compensated bandgap reference and comparator to detect VCC deviations below its factory-trimmed 2.80–2.97 V threshold. Its internal timing circuit ensures a guaranteed 100–250 ms reset pulse width after VCC recovery, independent of supply slew rate.
It delivers rail-to-rail push-pull output (VOH = VCC − 0.1 V, IOL = +10 mA), draws only 28–35 µA quiescent current, and supports operation across 1.2–5.5 V supply range - enabling use beyond nominal 3.0 V systems while maintaining trip point accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 2.80–2.97 V; precise detection threshold for 3.0 V systems with ±10% tolerance |
| Reset Pulse Width | 100–250 ms; ensures stable microprocessor initialization after power recovery |
| Output Type | Push-pull active-high; eliminates need for external pull-up resistor in most MCU interfaces |
| Supply Range | 1.2–5.5 V; allows operation across wide input voltage margins without recalibration |
| Quiescent Current | 28–35 µA; enables low-power battery-backed or always-on monitoring applications |
| Operating Temp | -40°C to +85°C; qualified for industrial-grade embedded control environments |
Pinout & Package
DS1817-10 is available in both TO-92 (3-pin through-hole) and SOT-23 (3-pin surface-mount) packages. Both share identical pin mapping and functional assignment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (TO-92) / 1 (SOT-23) | RST | Active-high reset output; drives high when VCC falls below trip point or during power-up delay |
| 2 (TO-92) / 2 (SOT-23) | VCC | Power supply input; monitors voltage level and powers internal reference/comparator |
| 3 (TO-92) / 3 (SOT-23) | GND | Ground reference; required for accurate voltage sensing and output logic reference |
Key Features
| Feature | Design Value |
|---|---|
| Precision voltage trip point | Factory-trimmed 2.80–2.97 V window ensures consistent reset behavior across temperature and unit variance |
| Fixed 150 ms reset timeout | Guaranteed minimum hold time prevents premature processor release before power stabilization |
| Push-pull output stage | Eliminates external pull-up component and reduces BOM count in reset signal routing |
| Low quiescent current | Sub-35 µA operation extends battery life in portable or energy-harvested monitoring nodes |
| Wide supply range support | Operates from 1.2 V to 5.5 V, allowing reuse across multiple voltage domains without redesign |
Applications
| Industrial PLC Controller | Smart Meter Power Management |
|---|---|
Use Scenario: Power interruption detection during utility grid fluctuations causes transient brownouts in metering hardware. IC Role / Device Role / Timing Role: DS1817-10 monitors 3.3 V supply rail and asserts RST within 5 µs of VCC drop below 2.80 V, holding reset for ≥100 ms post-recovery. Use Value: Prevents corrupted flash writes or register misconfiguration during unstable power transitions. | Use Scenario: Battery-backed real-time clock and metrology IC require clean startup after main supply reassertion. IC Role / Device Role / Timing Role: DS1817-10 provides synchronized active-high reset to both RTC and ADC subsystems upon 3.0 V rail stabilization. Use Value: Ensures deterministic initialization sequence without external timing components or firmware delays. |
| Embedded Gateway Boot Sequencing | IoT Sensor Node Wake-Up Control |
Use Scenario: Cellular modem and application MCU share a single 3.3 V LDO; power sequencing must guarantee MCU readiness before modem activation. IC Role / Device Role / Timing Role: DS1817-10 generates a fixed-duration reset pulse aligned to VCC rise, coordinating boot order between co-located ICs. Use Value: Replaces discrete RC reset circuits with predictable, temperature-stable timing. | Use Scenario: Ultra-low-power sensor node wakes periodically from deep sleep; supply ramp-up must be validated before peripheral enable. IC Role / Device Role / Timing Role: DS1817-10 monitors VCC from energy-harvesting source and releases RST only after sustained 2.88 V for ≥150 ms. Use Value: Avoids false wake-ups caused by supply ripple or slow capacitor charging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-monitoring reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS3808G12DBVR | Adjustable trip point (via external resistor); 200 ms default reset timeout; open-drain output | Requires external pull-up; supports custom thresholds but adds component count | Choose when flexible VCC monitoring or multi-rail coordination is needed |
| MAX809TRD3+T | Fixed 3.08 V trip point; active-low reset; 140 ms min timeout; SOT-23 only | Incompatible polarity requires MCU pin reassignment or inverter logic | Choose only if system design already uses active-low reset architecture |
Compared with TPS3808G12DBVR and MAX809TRD3+T, the DS1817-10 offers factory-set ±10% trip accuracy at 2.88 V with push-pull active-high output - reducing layout complexity and eliminating external biasing, making it optimal for cost-sensitive, fixed-voltage 3.0 V systems where minimal BOM and proven reliability are critical.
Availability
DS1817-10 is available at Aetrix Electronics and suitable for industrial automation controllers, smart utility meters, and embedded gateways requiring stable component supply and long-term lifecycle assurance.
Supply support for DS1817-10 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 precision analog, mixed-signal, and power management ICs for industrial, automotive, and communications applications.
The DS1817-10 belongs to the EconoReset™ family - engineered for low-cost, high-reliability power-supply monitoring in resource-constrained microcontroller-based systems.
FAQ
What is the exact VCC trip point range for DS1817-10?
The DS1817-10 has a guaranteed VCC trip point range of 2.80 V to 2.97 V at +25°C, corresponding to a nominal 2.88 V threshold with ±10% tolerance. This range is factory-trimmed and temperature-compensated to maintain accuracy across the full -40°C to +85°C operating range. The DS1817-10 datasheet specifies these limits under DC Electrical Characteristics, Note 1.
Does DS1817-10 require an external pull-up resistor on the RST pin?
No, DS1817-10 does not require an external pull-up resistor because it features a push-pull output stage capable of actively driving high (up to VCC − 0.1 V) and sinking up to +10 mA. This eliminates the need for external biasing components and simplifies interface design with most microcontrollers expecting active-high reset signals. The DS1817-10's output architecture is explicitly defined in the Pin Assignment and DC Electrical Characteristics sections.
Can DS1817-10 be used with a 5 V supply rail?
Yes, DS1817-10 supports supply voltages from 1.2 V to 5.5 V per its Recommended DC Operating Conditions. However, its trip point remains fixed at 2.80–2.97 V - so when used with a 5 V rail, it functions as an undervoltage detector triggering only if VCC drops into the 2.8–3.0 V range, not at 5 V. This behavior is confirmed in the DS1817-10 block diagram and timing specifications for power-down detection.
What is the reset timeout duration of DS1817-10 after VCC recovery?
The DS1817-10 holds the RST output active for 100–250 ms after VCC returns to an in-tolerance condition, with a typical value of 150 ms. This guaranteed minimum pulse width ensures sufficient stabilization time for microprocessors and associated peripherals before release. The DS1817-10 timing parameter tRST is specified in the AC Electrical Characteristics table and verified across temperature and supply variations.
Which packages are available for DS1817-10?
The DS1817-10 is offered in both TO-92 (3-pin through-hole) and SOT-23 (3-pin surface-mount) packages, with identical pinout and electrical performance. Mechanical drawings for both variants are published in the DS1817-10 datasheet's Mechanical Drawings section. No other package options - such as SOIC or SC-70 - are supported for this specific part number.
DS1817-10 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 High
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
DS1817-10 FAQ
1.How can I place an order for DS1817-10 through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1817-10 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 DS1817-10 reliable?
The price and inventory of DS1817-10 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1817-10 is usually 5 days.
3.What payment methods are accepted for DS1817-10?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1817-10 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1817-10?
DS1817-10 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1817-10 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 DS1817-10?
For technical support, including DS1817-10 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1817-10 requirements.
6.How does Aetrix verify that DS1817-10 is sourced from the original manufacturer or authorized distributors?
All DS1817-10 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 DS1817-10 meets industry standards.
7.What is the process for return or replacement of DS1817-10?
All DS1817-10 units undergo pre-shipment inspection (PSI). If there is an issue with DS1817-10, 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 DS1817-10 part is unused and in its original packaging.
Return procedure for DS1817-10:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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