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Analog Devices Inc./Maxim Integrated DS1813-5
- Part No.:
- DS1813-5
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
DS1813-5.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,899
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Product details
Overview
DS1813-5 from Maxim Integrated is a precision 4.62V ±5% voltage-monitoring reset IC with open-drain active-low output, internal 5.5kΩ pullup resistor, and pushbutton reset capability. It asserts reset during VCC undervoltage or manual button press, holding RST low for 150ms after recovery or release. Used in microcontroller power-up sequencing and brownout protection circuits.
For engineers reviewing the DS1813-5 datasheet, DS1813-5 pinout, DS1813-5 application, or DS1813-5 equivalent, key selection criteria include trip point tolerance (±5%), reset timeout consistency (100–300ms), pushbutton debounce timing, open-drain drive strength (10mA sink), and SOT-23/TO-92 package compatibility with space-constrained embedded systems.
Technical Context
The DS1813-5 integrates a temperature-compensated bandgap reference and comparator to detect VCC falling below 4.62V (typical) with ±5% accuracy. Its internal logic ensures reset assertion on both power-down and manual RST pin pull-down events.
After VCC returns above trip threshold, the device holds RST active for 150ms (typical) to guarantee microprocessor stabilization. Pushbutton detection requires ≥1µs low pulse on RST, triggering a fixed 150ms (typical) reset hold time independent of button press duration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 4.62V typical, ±5% tolerance - ensures reliable reset activation at defined supply margin for 5V systems |
| Reset Timeout (tRST) | 100–300ms - guarantees sufficient processor initialization window after power recovery |
| Output Type | Open-drain with internal 5.5kΩ pullup - enables wired-OR configuration and eliminates external resistor in many designs |
| Sink Current (IOL) | 10mA at 0.4V - drives standard CMOS reset inputs without external buffer |
| Operating Temp | -40°C to +85°C - supports industrial-grade embedded applications without derating |
| Supply Range | 1.2V to 5.5V - compatible with 3.3V and 5V logic domains |
| Pushbutton Detect Delay | 1µs minimum pulse - rejects noise while enabling fast manual reset initiation |
Pinout & Package
DS1813-5 is available in 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 |
|---|---|---|
| RST | Active-low open-drain reset output | Drives microcontroller /RESET input; requires external pullup only if internal 5.5kΩ resistor is insufficient for target load |
| VCC | Power supply input | Monitored voltage source; powers internal reference and comparator; operates from 1.2V to 5.5V |
| GND | Ground reference | Common return path for VCC and RST; must be low-impedance to ensure accurate trip point detection |
Key Features
| Feature | Design Value |
|---|---|
| Temperature-compensated voltage reference | Stabilizes trip point across -40°C to +85°C, eliminating external compensation components |
| Dual-trigger reset logic | Responds identically to both VCC undervoltage and external RST pin pull-down, unifying power and manual reset paths |
| Fixed 150ms reset hold time | Guarantees consistent processor startup timing regardless of VCC slew rate or button press duration |
| Integrated 5.5kΩ pullup resistor | Reduces BOM count by eliminating discrete pullup in standard 5V CMOS reset interfaces |
Applications
| Industrial PLC Controller | Smart Meter Power Management |
|---|---|
Use Scenario: Power cycling due to grid fluctuations in utility metering hardware. IC Role / Device Role / Timing Role: Voltage supervisor asserting /RESET during brownout events and enabling field-service manual reset via front-panel button. Use Value: Prevents corrupted firmware execution by enforcing 150ms reset hold after VCC recovery, matching MCU boot requirements. | Use Scenario: Battery-backed real-time clock and metrology ICs requiring deterministic reset on main supply loss. IC Role / Device Role / Timing Role: Monitors 5V rail integrity and generates synchronized reset pulses to multiple subsystems upon undervoltage detection. Use Value: Eliminates need for separate pushbutton debouncing circuitry-direct RST pin control reduces PCB area and component count. |
| Embedded Gateway Boot Sequencing | IoT Sensor Node Recovery |
Use Scenario: Cold-start of ARM Cortex-M based gateway after AC power restoration. IC Role / Device Role / Timing Role: Ensures CPU remains held in reset until 5V supply settles within ±5% of 4.62V and stays stable for ≥150ms. Use Value: Matches exact trip threshold and timeout spec of STMicro STM32F4xx series reset controllers, enabling drop-in replacement in legacy designs. | Use Scenario: Remote environmental sensor node powered by solar-charged Li-ion battery with variable VCC. IC Role / Device Role / Timing Role: Detects gradual VCC decay below 4.62V and initiates controlled shutdown/reset before brownout-induced data corruption. Use Value: Internal temperature compensation maintains ±5% trip accuracy across outdoor operating range (-40°C to +85°C), critical for unattended 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 |
|---|---|---|---|
| MAX6326–46D | 4.63V trip, ±2.5% tolerance, 140ms min reset timeout, no pushbutton support | Lacks manual reset functionality; requires external switch interface | Select when tighter trip accuracy and shorter reset hold are prioritized over pushbutton integration |
| TPS3808G15 | 4.63V trip, ±0.5% tolerance, adjustable reset delay (1ms–10s), pushbutton not supported | Programmable timeout and higher precision, but no native RST pin override capability | Choose for high-accuracy power sequencing where external reset control is handled separately |
Compared with MAX6326–46D and TPS3808G15, DS1813-5 uniquely combines ±5% trip tolerance, fixed 150ms reset hold, and integrated pushbutton sensing in a 3-pin SOT-23/TO-92 package-reducing system-level component count and simplifying manual reset implementation without sacrificing industrial temperature range.
Availability
DS1813-5 is available at Aetrix Electronics and suitable for industrial automation, smart metering, and embedded gateway applications requiring stable component supply, long-term lifecycle support, and consistent reset behavior across temperature and voltage variations.
Supply support for DS1813-5 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 DS1813-5 belongs to Maxim's EconoReset family-engineered for cost-sensitive embedded systems needing reliable, single-chip power monitoring and manual reset with minimal external components.
FAQ
What is the exact VCC trip point specification for DS1813-5?
The DS1813-5 has a nominal VCC trip point of 4.62V with ±5% tolerance, meaning it asserts reset when VCC falls below 4.40V (min) and releases reset when VCC rises above 4.84V (max). This is factory-trimmed and tested per datasheet Section 4, and applies across the full -40°C to +85°C operating range due to internal temperature compensation.
Does DS1813-5 require an external pullup resistor on the RST pin?
No, DS1813-5 includes an internal 5.5kΩ pullup resistor on the RST pin, eliminating the need for an external component in most 5V CMOS applications. However, if driving heavy capacitive loads (>50pF) or interfacing with high-input-current devices, an external pullup may be required to meet timing and voltage thresholds specified in the DS1813-5 datasheet.
How does DS1813-5 handle pushbutton reset timing?
DS1813-5 detects a pushbutton press when the RST pin is pulled low for ≥1µs. Upon release, it holds RST active low for 150ms (typical), independent of press duration. This fixed timeout ensures consistent reset behavior and avoids contact bounce issues-no external RC debounce network is needed for basic operation.
Can DS1813-5 operate from a 3.3V supply?
Yes, DS1813-5 operates from 1.2V to 5.5V, making it compatible with 3.3V systems. However, its 4.62V trip point means it will not assert reset under normal 3.3V operation-it is intended for monitoring 5V rails. For 3.3V supply monitoring, consider DS1813-33 (3.08V trip) or other variants in the same family.
What package options are available for DS1813-5?
DS1813-5 is offered in both TO-92 (3-pin through-hole) and SOT-23 (3-pin surface-mount) packages. Pinout and electrical specifications are identical between packages. Mechanical drawings for both are available in the Maxim Integrated datasheet revision 022306, Section "Mechanical Drawings".
DS1813-5 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:
- 4.62V
- 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
DS1813-5 FAQ
1.How can I place an order for DS1813-5 through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1813-5 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 DS1813-5 reliable?
The price and inventory of DS1813-5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DS1813-5 is usually 5 days.
3.What payment methods are accepted for DS1813-5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1813-5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1813-5?
DS1813-5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1813-5 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 DS1813-5?
For technical support, including DS1813-5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1813-5 requirements.
6.How does Aetrix verify that DS1813-5 is sourced from the original manufacturer or authorized distributors?
All DS1813-5 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 DS1813-5 meets industry standards.
7.What is the process for return or replacement of DS1813-5?
All DS1813-5 units undergo pre-shipment inspection (PSI). If there is an issue with DS1813-5, 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 DS1813-5 part is unused and in its original packaging.
Return procedure for DS1813-5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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