My Inquiry
My Account
Analog Devices Inc./Maxim Integrated DS1813-5+T&R
- Part No.:
- DS1813-5+T&R
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Supervisors
- Package:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Datasheet:
-
DS1813-5+T&R.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:1,751
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
DS1813-5+T&R from Maxim Integrated is a precision 4.62V ±1.5% (typ) voltage supervisor IC with pushbutton reset capability, open-drain active-low reset output, internal 5.5kΩ pullup resistor, and 150ms reset timeout. It monitors VCC for out-of-tolerance conditions and provides manual reset via external switch, used in microcontroller power-up sequencing and brownout protection circuits.
For engineers reviewing the DS1813-5+T&R datasheet, DS1813-5+T&R pinout, DS1813-5+T&R application, or DS1813-5+T&R equivalent, key selection criteria include trip point accuracy (4.62V), guaranteed 150ms reset hold time after power recovery, pushbutton debounced reset timing, SOT-23-3 package compatibility, and -40°C to +85°C industrial temperature operation.
Technical Context
The DS1813-5+T&R implements a precision bandgap-referenced comparator with temperature-compensated hysteresis to detect VCC crossing its 4.62V threshold. Its internal circuitry asserts RST within 5µs of VCC falling below VCCTP and holds it active for 100–300ms (typ 150ms) after VCC returns above threshold.
It supports dual reset initiation modes: automatic power-fail detection and manual pushbutton override. The RST pin serves as both open-drain output and input-sense node-pulling it low for ≥1µs triggers a 150ms reset pulse upon release, independent of VCC status.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Trip Point | 4.62V (typ), ±1.5% tolerance ensures reliable 5V system brownout detection at defined margin |
| Reset Timeout (tRST) | 150ms (typ), guarantees sufficient stabilization time for microcontrollers before release |
| Output Type | Open-drain with internal 5.5kΩ pullup enables flexible logic-level interfacing and wired-OR reset buses |
| Supply Current (ICC) | 30–40µA (typ), ultra-low quiescent draw suitable for battery-backed or always-on monitoring |
| Operating Temp | -40°C to +85°C, validated for industrial-grade embedded control and automotive body electronics |
| Pushbutton Response | Detects <1µs low pulse on RST and generates 150ms reset-eliminates need for external debounce circuitry |
| VCC Slew Rate Immunity | Supports monotonic VCC ramp-up/down without false triggering (tF = 300µs, tR = 0ns) |
Pinout & Package
SOT-23-3 surface-mount package with 1.3mm × 2.9mm footprint, lead-free and RoHS-compliant. Pin 1 = RST (active-low open-drain output), Pin 2 = VCC (power supply input), Pin 3 = GND (ground reference).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (RST) | Active-low reset output / pushbutton sense input | Drives external reset line low; also detects external pull-down for manual reset initiation |
| 2 (VCC) | Power supply input | Supplies internal reference and comparator; trip point referenced to this rail |
| 3 (GND) | Ground reference | Common return path for VCC and RST; required for accurate voltage threshold sensing |
Key Features
| Feature | Design Value |
|---|---|
| Integrated precision voltage reference | Temperature-compensated bandgap reference enables stable 4.62V trip point across -40°C to +85°C |
| Single-pin pushbutton interface | RST pin doubles as manual reset trigger-no dedicated PB input required, saving PCB space and BOM count |
| Guaranteed reset timeout | 100–300ms (typ 150ms) hold time ensures processor clock and supply stability before release |
| Low-power operation | 30–40µA ICC allows continuous supervision in energy-sensitive applications without significant battery drain |
| Robust input timing immunity | 5µs max VCC detect-to-RST delay and 1µs min pushbutton pulse detection prevent spurious resets |
Applications
| Industrial PLC Controller | Smart Meter Power Management |
|---|---|
Use Scenario: Microcontroller-based programmable logic controller subjected to intermittent AC line drops and voltage sags. IC Role / Device Role / Timing Role: DS1813-5+T&R continuously monitors 5V rail and asserts active-low reset during brownout events, holding reset for 150ms after recovery to ensure clean MCU restart. Use Value: Prevents corrupted firmware execution and I/O state glitches by guaranteeing full power stabilization before MCU initialization. | Use Scenario: Battery-backed electricity meter requiring fail-safe reset during main supply interruption and manual calibration reset. IC Role / Device Role / Timing Role: DS1813-5+T&R supervises VCC and accepts pushbutton input on RST pin to initiate field-service reset without additional GPIO or debounce components. Use Value: Eliminates discrete RC debounce network and reduces component count while maintaining deterministic 150ms reset duration for EEPROM write protection. |
| Embedded HVAC Control Board | Point-of-Sale Terminal Power Sequencing |
Use Scenario: HVAC microcontroller operating in unregulated 5V environment with thermal cycling and EMI-induced supply noise. IC Role / Device Role / Timing Role: DS1813-5+T&R provides hysteresis-stabilized 4.62V threshold detection and rejects fast transients via 5µs response latency and slew-rate immunity. Use Value: Avoids nuisance resets caused by brief supply dips, improving system uptime and reducing service calls. | Use Scenario: Retail terminal with multiple voltage rails where 5V must stabilize before enabling USB peripherals and display driver. IC Role / Device Role / Timing Role: DS1813-5+T&R generates synchronized reset pulse only after confirmed 5V rail integrity and enforces 150ms hold time before releasing downstream enable signals. Use Value: Ensures deterministic power-up sequence across mixed-signal subsystems, preventing bus contention and initialization failures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisor applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326–MAX6328 series | Pin-compatible SOT-23-3 family with selectable trip points (2.63V–4.63V); tighter 1.5% initial accuracy but no integrated pushbutton sensing | Requires external circuit for manual reset; better suited when precise trip point selection is critical and PB function is handled separately | Choose MAX6327 for 4.63V trip if pushbutton integration is unnecessary and higher accuracy is prioritized |
| TPS3808G15 | Adjustable trip point via external resistor divider; 2% accuracy; no native pushbutton support; requires external pullup and debounce | Offers design flexibility for non-standard thresholds but increases BOM and layout complexity | Prefer TPS3808G15 only when custom VCC threshold (e.g., 3.3V) is required and board space permits added components |
Compared with MAX6327 and TPS3808G15, the DS1813-5+T&R uniquely integrates pushbutton reset sensing on the RST pin-reducing component count and PCB area-while delivering factory-trimmed 4.62V trip accuracy and guaranteed 150ms timeout, making it optimal for cost-sensitive, space-constrained 5V microcontroller systems.
Availability
DS1813-5+T&R is available at Aetrix Electronics and suitable for industrial automation controllers, smart utility meters, embedded HVAC systems, and point-of-sale terminals requiring stable component supply and long-term lifecycle support.
Supply support for DS1813-5+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 DS1813-5+T&R belongs to Maxim's EconoReset™ supervisor family, engineered for low-cost, high-reliability power monitoring in resource-constrained microcontroller systems with minimal external components.
FAQ
What is the exact VCC trip voltage for DS1813-5+T&R?
The DS1813-5+T&R has a nominal VCC trip point of 4.62V, with a guaranteed range of 4.50V to 4.75V over temperature and process variation. This value is factory-trimmed and specified in the DC Electrical Characteristics table under "DS1813-5" row. The "-5" suffix denotes the 5% tolerance grade, corresponding to ±1.5% typical accuracy around 4.62V. DS1813-5+T&R maintains this threshold across its full -40°C to +85°C operating range.
Does DS1813-5+T&R require an external pullup resistor on the RST pin?
No, DS1813-5+T&R includes an internal 5.5kΩ pullup resistor (3.5–7.5kΩ range) connected to VCC, eliminating the need for an external pullup in standard 5V systems. This feature simplifies design and reduces BOM count. External pullups may be added only if specific logic-level translation or stronger drive strength is required-though doing so alters the effective pullup value and must be verified against IOL and VOH specifications.
How does the pushbutton reset function work on DS1813-5+T&R?
The DS1813-5+T&R uses the RST pin for both output and input: pulling RST low for ≥1µs (even while VCC is valid) initiates a manual reset cycle. Upon release, DS1813-5+T&R drives RST low for 100–300ms (typically 150ms), independent of VCC status. This eliminates external debounce components and allows direct connection of a momentary switch between RST and GND-no series resistor or capacitor needed for basic operation.
What is the maximum supply voltage rating for DS1813-5+T&R?
DS1813-5+T&R supports a VCC supply voltage range of 0V to 5.5V under recommended operating conditions. Its absolute maximum rating is -0.5V to +7.0V on the VCC pin relative to GND. Operation above 5.5V is not guaranteed and may impact trip point accuracy or reliability. For 5V systems, DS1813-5+T&R is rated for continuous operation up to 5.5V, accommodating typical supply tolerances and ripple without derating.
Is DS1813-5+T&R available in TO-92 packaging?
Yes, DS1813-5+T&R is offered in both SOT-23-3 and TO-92 packages per the manufacturer's datasheet. However, the "+T&R" suffix specifically denotes tape-and-reel packaging for automated assembly and confirms the SOT-23-3 variant. TO-92 versions are orderable under different part numbers (e.g., DS1813-5+) and are not supplied in tape-and-reel format. Always verify package code and ordering option when selecting for production.
DS1813-5+T&R Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- EconoReset
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA) Formed Leads
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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+T&R FAQ
1.How can I place an order for DS1813-5+T&R through Aetrix?
Please submit a Request for Quotation (RFQ) for DS1813-5+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 DS1813-5+T&R reliable?
The price and inventory of DS1813-5+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 DS1813-5+T&R is usually 5 days.
3.What payment methods are accepted for DS1813-5+T&R?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DS1813-5+T&R transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DS1813-5+T&R?
DS1813-5+T&R orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DS1813-5+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 DS1813-5+T&R?
For technical support, including DS1813-5+T&R datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DS1813-5+T&R requirements.
6.How does Aetrix verify that DS1813-5+T&R is sourced from the original manufacturer or authorized distributors?
All DS1813-5+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 DS1813-5+T&R meets industry standards.
7.What is the process for return or replacement of DS1813-5+T&R?
All DS1813-5+T&R units undergo pre-shipment inspection (PSI). If there is an issue with DS1813-5+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 DS1813-5+T&R part is unused and in its original packaging.
Return procedure for DS1813-5+T&R:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
DS1813-5+T&R Tags
-
MIC826SYMT-TR
Microchip Technology
-
APX803S-31SA-7
Diodes Incorporated
-
APX803L20-29SA-7
Diodes Incorporated
-
TPS3828-33DBVR
Texas Instruments
-
V6340RSP3B+
EM Microelectronic
-
EM6325CXSP5B-2.9+
EM Microelectronic
-
MCP120T-300I/TT
Microchip Technology
-
MCP130T-315I/TT
Microchip Technology
-
MCP120T-475I/TT
Microchip Technology
-
MCP111T-300E/TT
Microchip Technology
-
MCP120T-315I/TT
Microchip Technology
-
MCP809T-315I/TT
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
