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Analog Devices Inc./Maxim Integrated DS1818-10+
- Part No.:
- DS1818-10+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
DS1818-10+.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,624
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Product details
Overview
DS1818-10+ from Maxim Integrated is a 3.3V fixed-threshold supervisory IC with pushbutton reset capability, temperature-compensated voltage monitoring, 150ms reset pulse width, and open-drain active-low RST output. It ensures reliable microprocessor startup and stabilization in embedded power management systems.
For engineers reviewing the DS1818-10+ datasheet, DS1818-10+ pinout, DS1818-10+ application, or DS1818-10+ equivalent, key selection criteria include its 2.80–2.97V VCC trip point (10% tolerance), 35µA max quiescent current, -40°C to +85°C operation, pushbutton-synchronized reset timing, and SOT-23/TO-92 package compatibility.
Technical Context
The DS1818-10+ integrates a precision temperature-compensated voltage reference and comparator to detect VCC out-of-tolerance conditions. Its internal logic asserts RST low within 5µs of detection and holds it active for 100–250ms after VCC recovery, ensuring processor stabilization.
It supports manual reset via external pushbutton on the RST line: pulling RST low ≥1µs triggers a 100–250ms reset pulse upon release. The open-drain output includes an internal 3.5–7.5kΩ pull-up resistor, eliminating external components in many designs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 2.80–2.97V (10% tolerance at 3.3V nominal; enables precise brownout detection) |
| Reset Pulse Width | 100–250ms (guarantees sufficient time for power supply and CPU stabilization) |
| Quiescent Current | ≤35µA (enables ultra-low-power operation in battery-backed or energy-constrained systems) |
| Operating Temp | -40°C to +85°C (supports industrial-grade deployment without derating) |
| Output Type | Active-low open-drain (allows wired-OR configuration and flexible voltage-level interfacing) |
| Internal Pull-up | 3.5–7.5kΩ (reduces BOM count and PCB area vs. discrete pull-up solutions) |
| Pushbutton Response | Detects ≥1µs low pulse on RST; generates 100–250ms reset (enables simple, debounced manual reset) |
Pinout & Package
DS1818-10+ is available in both SOT-23 and TO-92 packages. Both variants share identical pin functions and terminal assignments.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | RST | Active-low open-drain reset output; sinks up to 10mA; accepts pushbutton input for manual reset |
| 2 | VCC | Power supply input (1.0–5.5V); powers internal reference, comparator, and logic |
| 3 | GND | Ground reference for all internal circuitry and reset threshold accuracy |
Key Features
| Feature | Design Value |
|---|---|
| Temperature-compensated voltage monitor | Maintains ±1% trip point stability over -40°C to +85°C, eliminating external compensation |
| Automatic power-fail reset generation | Detects VCC drop below 2.80V and asserts RST within 5µs - faster than typical µC watchdog timeout |
| 150ms guaranteed reset hold time | Ensures full stabilization of 3.3V LDOs and microcontroller clock domains before release |
| Integrated 5.5kΩ pull-up resistor | Reduces component count by one per reset node; eliminates layout sensitivity to stray capacitance |
| Pushbutton-synchronized reset | Eliminates need for external debounce RC network; supports direct switch-to-RST connection |
Applications
| Industrial PLC I/O Modules | Medical Diagnostic Handhelds |
|---|---|
Use Scenario: Power cycling during field firmware updates in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Supervisory IC providing power-on reset and brownout protection for ARM Cortex-M4 MCU and isolated CAN transceivers. Use Value: 2.80–2.97V trip point matches 3.3V rail tolerance; 150ms reset hold prevents partial register initialization during LDO settling. | Use Scenario: Battery-powered ultrasound probe requiring cold-start reliability after storage. IC Role / Device Role / Timing Role: Reset supervisor ensuring deterministic boot sequence for low-power SoC and analog front-end ASIC. Use Value: 35µA max ICC extends shelf life; pushbutton reset allows user-initiated recalibration without host PC. |
| Smart Energy Meters | Automotive Body Control Modules (BCM) |
Use Scenario: AC/DC power interruption during grid voltage sags in residential metering units. IC Role / Device Role / Timing Role: Voltage monitor asserting reset to prevent EEPROM corruption during brownout events. Use Value: Temperature-compensated trip point maintains accuracy across -25°C to +70°C enclosure temperatures. | Use Scenario: Ignition cycling in 12V-derived 3.3V subsystems with high transient noise. IC Role / Device Role / Timing Role: Immune reset generator interfacing with automotive-grade microcontroller reset input. Use Value: Open-drain RST output tolerates 5V-tolerant MCU inputs; 100–250ms pulse covers worst-case oscillator start-up. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar supervisory IC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX809TRD2+T | Fixed 3.08V reset threshold (±2.5%), no pushbutton support, 140ms reset timeout | Lacks manual reset functionality; requires external switch interface for user-triggered reset | Select when pushbutton reset is unnecessary and tighter trip tolerance is required |
| TPS3808G12DBVR | Adjustable reset threshold (via external resistor), 200ms reset timeout, higher 12µA typical ICC | Requires external resistor network for 3.3V setting; supports programmable delay but adds BOM cost | Select when design flexibility for multiple supply rails justifies added components |
Compared with MAX809TRD2+T and TPS3808G12DBVR, the DS1818-10+ uniquely integrates pushbutton reset synchronization and a 10%-tolerance 3.3V threshold in a single SOT-23/TO-92 package - reducing system-level complexity where manual reset and brownout immunity are co-required.
Availability
DS1818-10+ is available at Aetrix Electronics and suitable for industrial control panels, medical handheld diagnostics, smart metering systems, and automotive body electronics requiring stable component supply and long-term lifecycle assurance.
Supply support for DS1818-10+ 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) designs precision analog, mixed-signal, and power management ICs for demanding industrial, medical, and communications applications.
The DS1818-10+ belongs to Maxim's EconoReset™ family of supervisory ICs, engineered specifically for cost-sensitive, space-constrained embedded systems needing reliable power-on and brownout reset with minimal external components.
FAQ
What is the exact VCC trip point range for DS1818-10+?
The DS1818-10+ has a guaranteed VCC trip point range of 2.80V to 2.97V at 25°C, corresponding to a 10% tolerance around the nominal 3.3V threshold. This range is specified across the full -40°C to +85°C operating temperature and is maintained by an internal temperature-compensated voltage reference. The DS1818-10+ datasheet confirms these limits under DC Electrical Characteristics.
Does DS1818-10+ require an external pull-up resistor on the RST pin?
No, DS1818-10+ includes an internal pull-up resistor of 3.5–7.5kΩ, eliminating the need for an external component in most standard microcontroller reset interfaces. The open-drain RST output can directly drive typical CMOS reset inputs. An external pull-up may be added only if higher sink current (>10mA) or faster rise time is required beyond the internal resistor's capability.
How does the pushbutton reset function work on DS1818-10+?
The DS1818-10+ monitors the RST pin for manual reset: pulling RST low for ≥1µs triggers an internal reset cycle, and the output remains actively low for 100–250ms after release. This eliminates external debounce circuitry. The DS1818-10+ timing diagram (Figure 3) confirms this behavior, and the internal logic ensures consistent pulse width regardless of button press duration.
Can DS1818-10+ operate with supply voltages below 3.3V?
Yes, DS1818-10+ operates over a VCC range of 1.0V to 5.5V. Its 2.80–2.97V trip point remains valid down to VCC = 1.2V, enabling use in low-voltage systems such as 1.8V or 2.5V domains - provided the monitored rail is 3.3V. The DS1818-10+ datasheet specifies DC electrical characteristics across this full range, including ICC and tRST performance.
What package options are available for DS1818-10+?
DS1818-10+ is offered in two industry-standard packages: SOT-23 (3-pin) and TO-92 (3-pin). Both share identical pinout (RST-VCC-GND), thermal performance, and electrical specifications. Mechanical drawings for both packages are published in the DS1818 datasheet revision history and Maxim's website packaging section.
DS1818-10+ 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:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.88V
- Output:
- Open Drain or Open Collector
- 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
DS1818-10+ FAQ
1.How can I place an order for DS1818-10+ through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1818-10+ 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 DS1818-10+ reliable?
The price and inventory of DS1818-10+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1818-10+ is usually 5 days.
3.What payment methods are accepted for DS1818-10+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1818-10+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1818-10+?
DS1818-10+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1818-10+ 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 DS1818-10+?
For technical support, including DS1818-10+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1818-10+ requirements.
6.How does Aetrix verify that DS1818-10+ is sourced from the original manufacturer or authorized distributors?
All DS1818-10+ 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 DS1818-10+ meets industry standards.
7.What is the process for return or replacement of DS1818-10+?
All DS1818-10+ units undergo pre-shipment inspection (PSI). If there is an issue with DS1818-10+, 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 DS1818-10+ part is unused and in its original packaging.
Return procedure for DS1818-10+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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