My Inquiry
My Account
Analog Devices Inc. ADM1818-20ART-RL7
- Part No.:
- ADM1818-20ART-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADM1818-20ART-RL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,252
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM1818-20ART-RL7 from Analog Devices is a 3-pin open-drain microprocessor reset circuit with internal pull-up resistor, designed for monitoring 3 V supply rails. It features a 2.55 V (typical) reset threshold, 150 ms reset timeout, −40°C to +105°C operating temperature range, and SOT-23 package-used in embedded controllers to ensure safe power-on initialization.
For engineers reviewing the ADM1818-20ART-RL7 datasheet, ADM1818-20ART-RL7 pinout, ADM1818-20ART-RL7 application, or ADM1818-20ART-RL7 equivalent, key selection criteria include trip point accuracy (±1.5% typical), push-button reset support, low quiescent current (≤10 µA at 3.6 V), and compatibility with 3 V microcontroller reset inputs requiring active-low assertion.
Technical Context
The ADM1818-20ART-RL7 integrates a precision voltage reference, comparator, and 150 ms delay timer to generate a reliable active-low reset pulse after VCC rises above 2.55 V (typ). Its open-drain output with integrated 5.5 kΩ pull-up enables direct connection to microcontroller reset pins without external components.
It supports manual reset via push-button between RST and GND, triggering a guaranteed 150 ms (typ) reset pulse upon button release. The device operates across full industrial temperature range and maintains trip point stability over temperature (±0.02%/°C typical drift).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 2.55 V typical (2.47–2.64 V min/max); monitors 3 V supplies with margin for brownout detection |
| Reset Timeout | 150 ms typical (100–250 ms min/max); ensures stable power-up before system release |
| Supply Range | 1.2 V to 5.5 V; supports operation down to 1.2 V during undervoltage conditions |
| Quiescent Current | ≤10 µA at 3.6 V; enables ultra-low-power battery-backed systems |
| Output Type | Open-drain with 5.5 kΩ internal pull-up; simplifies interface to diverse logic families |
| Push-Button Response | 1 µs detect time; guarantees reset assertion on brief manual press |
| Operating Temp | −40°C to +105°C; qualified for automotive and industrial control environments |
Pinout & Package
ADM1818-20ART-RL7 is housed in a 3-lead SOT-23 (RT-3) package, measuring 2.90 mm × 1.30 mm × 1.02 mm, with JEDEC TO-236-AB compliance and gull-wing leads.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| RST | Active-low open-drain reset output | Pulled low during reset; floats high (via internal 5.5 kΩ) when released; accepts external push-button to GND |
| VCC | Supply input / monitored rail | Both powers the IC and serves as the voltage under supervision; no separate reference input required |
| GND | Analog and digital ground reference | Common return path for comparator, timer, and output stage; must be low-impedance for accurate threshold tracking |
Key Features
| Feature | Design Value |
|---|---|
| Integrated pull-up resistor | 5.5 kΩ typical (3.1–7.5 kΩ range); eliminates need for external pull-up and saves PCB space |
| Manual reset support | Dedicated push-button timing path with 1 µs detection and 150 ms hold; enables field service and recovery |
| Temperature-stable threshold | ±0.02%/°C typical drift; maintains 2.55 V trip accuracy across −40°C to +105°C |
| Low-voltage operation | Functional down to 1.2 V supply; allows reset assertion during deep brownout or battery depletion |
| Small-footprint packaging | SOT-23 footprint (2.9 mm × 1.3 mm); compatible with high-density layouts and automated assembly |
Applications
| Industrial PLC Controller | Automotive Body Control Module |
|---|---|
Use Scenario: Power sequencing in programmable logic controllers where 3 V I/O rails must stabilize before FPGA configuration begins. IC Role / Device Role / Timing Role: Monitors 3 V supply and asserts active-low reset for 150 ms to delay MCU boot until rail settles. Use Value: Prevents configuration corruption by guaranteeing ≥150 ms post-rail-stabilization before release, even under 10% line transients. | Use Scenario: Reset coordination in body control units with multiple 3 V sensor interfaces and CAN transceivers. IC Role / Device Role / Timing Role: Provides synchronized reset to microcontroller and peripheral ICs using shared RST net with internal pull-up. Use Value: Eliminates external pull-up and reduces BOM count while maintaining <10 µA quiescent draw during sleep mode. |
| Medical Portable Monitor | Smart Energy Meter |
Use Scenario: Battery-powered patient monitor requiring fail-safe restart after Li-ion voltage sag below 3 V. IC Role / Device Role / Timing Role: Detects 3 V rail collapse and holds reset low until battery recovers above 2.55 V, then enforces 150 ms delay. Use Value: Ensures deterministic reboot after brownout without software intervention or watchdog dependency. | Use Scenario: Tamper-resistant electricity meter with 3 V real-time clock and metrology ASIC. IC Role / Device Role / Timing Role: Supervises main 3 V supply and provides manual reset via sealed test button for firmware updates. Use Value: Push-button reset path meets IEC 62056-21 requirements with guaranteed 150 ms pulse independent of button press duration. |
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 | 2.5 V fixed threshold; 140 ms reset timeout; SOT-23-3; no internal pull-up (requires external) | Lacks push-button reset support; requires external 47 kΩ pull-up for same logic level | Choose when lower cost is critical and manual reset is unnecessary |
| TPS3808G125DBVR | 2.55 V threshold; adjustable delay (0.5–10 s); 1.8–6 V supply; no internal pull-up | Higher quiescent current (12 µA); requires external pull-up and delay capacitor | Choose when programmable timeout is needed beyond 250 ms |
Compared with MAX809SEUR+T and TPS3808G125DBVR, ADM1818-20ART-RL7 delivers integrated pull-up and push-button functionality in a drop-in SOT-23 footprint-reducing component count and enabling field-recoverable designs without layout changes.
Availability
ADM1818-20ART-RL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, portable medical monitors, and smart energy meters requiring stable component supply and long-term lifecycle assurance.
Supply support for ADM1818-20ART-RL7 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The ADM181x series was designed specifically for cost-sensitive, space-constrained microprocessor reset applications-delivering precision voltage monitoring, robust timing, and simplified integration in SOT-23/SC70 packages.
FAQ
What is the exact reset threshold voltage for ADM1818-20ART-RL7?
The ADM1818-20ART-RL7 has a nominal reset threshold of 2.55 V (typical), with guaranteed minimum and maximum values of 2.47 V and 2.64 V respectively across −40°C to +105°C. This trip point is factory-trimmed and specified in Table 1 of the Rev. F datasheet for the -20 variant.
Does ADM1818-20ART-RL7 require an external pull-up resistor?
No, ADM1818-20ART-RL7 includes an internal pull-up resistor of 5.5 kΩ (typical, 3.1–7.5 kΩ range) on the RST pin. This eliminates the need for an external component and ensures proper logic-high level when reset is inactive.
Can ADM1818-20ART-RL7 be used with a push-button for manual reset?
Yes, ADM1818-20ART-RL7 supports manual reset: connecting a push-button between RST and GND pulls the output low, and upon release, the device asserts a clean 150 ms (typical) reset pulse-guaranteed for any button press >1 µs duration.
What package type does ADM1818-20ART-RL7 use?
ADM1818-20ART-RL7 uses the 3-lead SOT-23 (RT-3) package per JEDEC TO-236-AB, with dimensions 2.90 mm × 1.30 mm × 1.02 mm and gull-wing surface-mount leads-compatible with standard reflow profiles and automated placement.
Is ADM1818-20ART-RL7 suitable for automotive applications?
Yes, ADM1818-20ART-RL7 is rated for −40°C to +105°C operation and qualified for automotive body electronics. Its 2.55 V threshold targets 3 V supply monitoring in modules such as BCMs and sensor hubs where brownout resilience is critical.
ADM1818-20ART-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 2.55V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 105°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ADM1818-20ART-RL7 FAQ
1.How can I place an order for ADM1818-20ART-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM1818-20ART-RL7 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 ADM1818-20ART-RL7 reliable?
The price and inventory of ADM1818-20ART-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM1818-20ART-RL7 is usually 5 days.
3.What payment methods are accepted for ADM1818-20ART-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM1818-20ART-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM1818-20ART-RL7?
ADM1818-20ART-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM1818-20ART-RL7 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 ADM1818-20ART-RL7?
For technical support, including ADM1818-20ART-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM1818-20ART-RL7 requirements.
6.How does Aetrix verify that ADM1818-20ART-RL7 is sourced from the original manufacturer or authorized distributors?
All ADM1818-20ART-RL7 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 ADM1818-20ART-RL7 meets industry standards.
7.What is the process for return or replacement of ADM1818-20ART-RL7?
All ADM1818-20ART-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM1818-20ART-RL7, 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 ADM1818-20ART-RL7 part is unused and in its original packaging.
Return procedure for ADM1818-20ART-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM1818-20ART-RL7 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…
