My Inquiry
My Account
Analog Devices Inc. ADM811TARTZ-REEL7
- Part No.:
- ADM811TARTZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
ADM811TARTZ-REEL7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:3,976
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM811TARTZ-REEL7 from Analog Devices is a precision microprocessor supervisory circuit in 4-lead SOT-143 (RA-4) package, providing active-low reset assertion at 3.08 V threshold, 140 ms minimum power-on reset timeout, and manual reset input with 10 µs minimum pulse width-used to ensure reliable boot sequencing in embedded controllers and safety-critical instrumentation.
For engineers reviewing the ADM811TARTZ-REEL7 datasheet, ADM811TARTZ-REEL7 pinout, ADM811TARTZ-REEL7 application, or ADM811TARTZ-REEL7 equivalent, key selection considerations include reset threshold accuracy (±2.5% over −40°C to +85°C), ultra-low quiescent current (5 µA typical), guaranteed glitch immunity (100 ns), and compatibility with 3 V supply rails requiring stable brownout detection and user-initiated system recovery.
Technical Context
The ADM811TARTZ-REEL7 implements a bandgap-referenced voltage monitor with internal hysteresis and a precision timing capacitor-less reset generator. Its reset assertion remains valid down to VCC = 1 V, ensuring deterministic microprocessor hold during supply decay.
It integrates debounced manual reset logic with rising/falling edge sensitivity thresholds scaled to 0.7 × VCC and 0.25 × VCC respectively, and features output drive capability of 1.2 mA sink at 0.3 V low-level under VTH(MIN) conditions-enabling direct interface with CMOS microcontrollers without external pull-up resistors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08 V nominal, ±2.5% over −40°C to +85°C-ensures accurate 3.3 V rail monitoring with margin for tolerance drift. |
| Reset Timeout | 140 ms minimum after VCC rise above threshold-guarantees sufficient stabilization time for 3 V microcontrollers before release. |
| Supply Current | 5 µA typical at VCC < 3.6 V-enables battery-backed operation in portable instruments with multi-year shelf life. |
| Manual Reset Pulse Width | 10 µs minimum-rejects switch bounce and EMI transients while accepting deliberate user-initiated resets. |
| Reset Output Type | Active-low open-drain (ADM811)-directly interfaces with standard microcontroller RESET# inputs without level-shifting. |
| Operating Temperature | −40°C to +85°C-validated for industrial and automotive under-hood environments where thermal stability is critical. |
| Glitch Immunity | 100 ns pulse rejection on MR and VCC-prevents false resets due to PCB noise or supply ripple in noisy systems. |
Pinout & Package
ADM811TARTZ-REEL7 is housed in a JEDEC-compliant 4-lead SOT-143 (RA-4) package with 1.92 mm × 1.40 mm footprint, 0.95 mm height, and gull-wing leads suitable for automated reflow assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | 0 V return path for all internal circuits; must be connected to system ground plane with low-inductance trace. |
| 2 RESET | Active-low reset output | Open-drain output asserted low during power-up, brownout, or manual reset; requires external pull-up for logic-high state. |
| 3 MR | Debounced manual reset input | Active-low input; accepts ≥10 µs pulses and rejects ≤100 ns glitches; floats high when unused. |
| 4 VCC | Monitored supply input | Accepts 1.0 V to 5.5 V; internally monitors 3.08 V threshold; decoupling with 0.1 µF capacitor to GND is mandatory. |
Key Features
| Feature | Design Value |
|---|---|
| Precision 3.08 V threshold | Enables reliable supervision of 3.3 V systems with 5% margin-avoids premature or delayed reset during rail sag. |
| 140 ms power-on reset timer | Guaranteed minimum delay ensures microcontroller clocks, PLLs, and memory initialize fully before execution begins. |
| 1 VCC reset validity | RESET remains low down to VCC = 1 V-prevents metastability and spurious code execution during power collapse. |
| 0.7 × VCC MR trigger | Automatic scaling of manual reset threshold eliminates need for external voltage dividers in multi-rail designs. |
| RoHS-compliant packaging | Z-suffix indicates lead-free, halogen-free RA-4 package compliant with EU Directive 2011/65/EU and IPC/JEDEC J-STD-020. |
Applications
| Industrial PLC Controllers | Automotive Body Control Modules |
|---|---|
Use Scenario: Power cycling and brownout events in factory-floor programmable logic controllers operating in electrically noisy environments. IC Role / Device Role / Timing Role: Supervisory circuit asserting active-low RESET# to ARM Cortex-M7-based controller during undervoltage or manual service intervention. Use Value: Prevents corrupted firmware execution and I/O latch-up by holding processor in reset until 3.3 V rail stabilizes for ≥140 ms post-power-up. | Use Scenario: Cold-cranking and load-dump transients in 12 V–regulated 3.3 V domains powering door module microcontrollers. IC Role / Device Role / Timing Role: Voltage monitor detecting 3.3 V rail collapse below 3.08 V and triggering controlled shutdown via reset assertion. Use Value: Ensures deterministic reset behavior across −40°C to +85°C ambient, eliminating intermittent lockups during engine start. |
| Portable Medical Sensors | Safety-Critical Instrumentation |
Use Scenario: Battery-powered handheld glucose meters with lithium coin-cell supply subject to gradual voltage decay. IC Role / Device Role / Timing Role: Low-power (5 µA) supervisor enabling >5-year shelf life while guaranteeing clean reset before ADC sampling begins. Use Value: Maintains RESET low down to VCC = 1 V-prevents partial initialization and data corruption as battery discharges. | Use Scenario: Redundant pressure transducer systems in fire suppression control panels requiring fail-safe power monitoring. IC Role / Device Role / Timing Role: Dual-supervisor configuration using ADM811TARTZ-REEL7 to cross-check 3.3 V rail integrity against independent reference. Use Value: Achieves SIL-2 compliance via precise 3.08 V threshold and 100 ns glitch immunity-rejecting transient-induced false resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX811TTR | 3.08 V threshold, 140 ms timeout, but higher 10 µA typical supply current and no RoHS Z-suffix option. | Lacks guaranteed 1 VCC reset validity and has lower temperature range (0°C to +70°C only). | Select MAX811TTR only if legacy design reuse mandates Maxim branding and RoHS compliance is not required. |
| TPS3808G30DBVR | 3.0 V threshold (±0.5%), 200 ms timeout, 1.1 µA typical current, but requires external capacitor for timeout adjustment. | Offers tighter threshold accuracy but introduces BOM cost and layout complexity with external timing component. | Choose TPS3808G30DBVR when sub-1% threshold tolerance is mandatory and board space allows for 0402 capacitor placement. |
Compared with MAX811TTR and TPS3808G30DBVR, ADM811TARTZ-REEL7 delivers superior thermal stability (−40°C to +85°C), lowest quiescent current among fixed-threshold 3 V supervisors, and integrated glitch immunity-making it optimal for space-constrained, battery-sensitive, and safety-certified designs where reliability trumps marginal accuracy gains.
Availability
ADM811TARTZ-REEL7 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, and portable medical sensors requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for ADM811TARTZ-REEL7 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, Inc. is a global semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control.
The ADM811/ADM812 product line was designed specifically for robust, low-power microprocessor supervision in harsh environments-emphasizing accuracy, glitch immunity, and wide-temperature operation without external components.
FAQ
What is the exact reset threshold voltage of ADM811TARTZ-REEL7 and how does it vary with temperature?
The ADM811TARTZ-REEL7 has a nominal reset threshold of 3.08 V at 25°C, with guaranteed range of 3.00 V to 3.15 V over −40°C to +85°C. This ±2.5% variation ensures reliable supervision of 3.3 V supplies even under full industrial temperature extremes, and its 30 ppm/°C temperature coefficient minimizes drift across operating conditions-critical for repeatable reset behavior in field-deployed ADM811TARTZ-REEL7 units.
Does ADM811TARTZ-REEL7 require an external capacitor for reset timing?
No, ADM811TARTZ-REEL7 uses an internal capacitor-less timing circuit to generate its 140 ms minimum power-on reset timeout-eliminating external components, reducing BOM count, and improving reliability. This monolithic design avoids capacitor aging, tolerance drift, or solder joint failure risks associated with discrete timing elements in systems using ADM811TARTZ-REEL7.
How does the manual reset (MR) input of ADM811TARTZ-REEL7 behave during power-up and brownout?
During power-up, the MR input of ADM811TARTZ-REEL7 is debounced and ignores pulses <100 ns while accepting those >10 µs; during brownout, MR remains functional down to VCC = 1 V, allowing user-initiated reset even as supply collapses-ensuring ADM811TARTZ-REEL7 maintains full supervisory control throughout the entire power envelope.
Can ADM811TARTZ-REEL7 directly drive a microcontroller's active-low RESET# pin without a pull-up resistor?
No-ADM811TARTZ-REEL7 features an open-drain RESET output requiring an external pull-up resistor (typically 10–100 kΩ to VCC) to establish a defined logic-high state. Without it, the RESET line floats during inactive periods, risking undefined microcontroller behavior; this design enables flexible voltage translation and is explicitly required in all ADM811TARTZ-REEL7 application circuits.
Is ADM811TARTZ-REEL7 pin-compatible with other members of the ADM811/ADM812 family?
Yes-ADM811TARTZ-REEL7 shares identical 4-lead SOT-143 (RA-4) pinout and electrical interface with all ADM811/ADM812 variants, including ADM811LARTZ-REEL7 and ADM812TARTZ-REEL7. Only reset threshold voltage and output polarity differ; thus, ADM811TARTZ-REEL7 can be substituted within the same footprint when 3.08 V supervision and active-low reset are required.
ADM811TARTZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.08V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
ADM811TARTZ-REEL7 FAQ
1.How can I place an order for ADM811TARTZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM811TARTZ-REEL7 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 ADM811TARTZ-REEL7 reliable?
The price and inventory of ADM811TARTZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM811TARTZ-REEL7 is usually 5 days.
3.What payment methods are accepted for ADM811TARTZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM811TARTZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM811TARTZ-REEL7?
ADM811TARTZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM811TARTZ-REEL7 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 ADM811TARTZ-REEL7?
For technical support, including ADM811TARTZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM811TARTZ-REEL7 requirements.
6.How does Aetrix verify that ADM811TARTZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All ADM811TARTZ-REEL7 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 ADM811TARTZ-REEL7 meets industry standards.
7.What is the process for return or replacement of ADM811TARTZ-REEL7?
All ADM811TARTZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM811TARTZ-REEL7, 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 ADM811TARTZ-REEL7 part is unused and in its original packaging.
Return procedure for ADM811TARTZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM811TARTZ-REEL7 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…
