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Analog Devices Inc. ADM6315-44D3ARTZRL
- Part No.:
- ADM6315-44D3ARTZRL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
ADM6315-44D3ARTZRL.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:4,989
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Product details
Overview
ADM6315-44D3ARTZRL from Analog Devices is a precision open-drain microprocessor supervisory circuit in SOT-143 package, monitoring 4.39 V supply with ±2.5% threshold accuracy over −40°C to +85°C, 140 ms minimum reset timeout, 5 μA typical supply current, and reset assertion down to VCC > 1 V. It serves as a system-level power-on/brownout detector in automotive safety controllers.
For engineers reviewing the ADM6315-44D3ARTZRL datasheet, ADM6315-44D3ARTZRL pinout, ADM6315-44D3ARTZRL application, or ADM6315-44D3ARTZRL equivalent, key selection criteria include reset threshold tolerance at temperature, manual reset glitch immunity (100 ns rejection), open-drain output sink capability (3.2 mA @ 4.25 V), and compatibility with noisy industrial power rails.
Technical Context
The ADM6315-44D3ARTZRL integrates a precision voltage reference comparator with hysteresis, debounced manual reset input (MR), and open-drain RESET output. Its internal reference enables 4.39 V trip point detection with ±2.5% variation across −40°C to +85°C and ±3.5% up to +125°C.
It delivers 140 ms minimum reset timeout after VCC rise or MR release, supports reset activation during brownout (35 μs delay at 1 mV/μs fall rate), and features 100 kΩ internal MR pull-up resistor - eliminating external components for basic manual reset implementation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.39 V ±2.5% (−40°C to +85°C); ensures reliable detection of 4.5 V rail degradation before microprocessor malfunction. |
| Reset Timeout | 140 ms minimum; guarantees sufficient hold time for full system stabilization after power-up or brownout recovery. |
| Supply Current | 5 μA typical @ 5.5 V; enables ultra-low-power operation in battery-backed or energy-constrained systems. |
| VCC Operating Range | 1 V to 5.5 V; allows reset assertion even during deep brownout, supporting fail-safe shutdown below 2.5 V logic levels. |
| MR Input Threshold | 0.3 × VCC (VIL) / 0.7 × VCC (VIH) when VTH < 4 V; ensures robust noise immunity and compatibility with 3.3 V or 5 V logic sources. |
| RESET Output Type | Open-drain; permits wired-OR configuration, level-shifting, and interface with higher-voltage peripherals (e.g., 12 V I/O). |
| Glitch Rejection | 100 ns pulse rejection on MR; prevents spurious resets from EMI or switch bounce without external RC filtering. |
Pinout & Package
Package: 4-Lead SOT-143 (RA-4), surface-mount, 1.3 mm × 2.1 mm footprint, 330°C/W junction-to-ambient thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground Reference | 0 V return path for all internal comparators and output stage; must be low-impedance connection to system ground plane. |
| 2 (RESET) | Active-Low Open-Drain Output | Sinks current when asserted; requires external pull-up to host VCC or higher rail; compatible with 3.3 V/5 V/12 V logic families. |
| 3 (MR) | Debounced Manual Reset Input | Active-low; internally pulled up to ~63 kΩ; accepts ≥1 μs pulses; rejects transients <100 ns; floats when unused. |
| 4 (VCC) | Monitored Supply Voltage Input | Primary power input and voltage sense node; powers internal circuitry and defines reset threshold reference point. |
Key Features
| Feature | Design Value |
|---|---|
| Precision Threshold Accuracy | ±2.5% over −40°C to +85°C enables deterministic reset behavior in automotive and industrial environments without calibration. |
| Four Timeout Options | 140 ms minimum timeout (D3 variant) balances startup reliability and fast recovery - avoids unnecessary delays while ensuring stable clock and memory initialization. |
| Low-Power Operation | 5 μA typical supply current extends battery life in portable instrumentation and remote sensors where supervisory ICs remain always-on. |
| Open-Drain RESET Output | Supports multi-source reset arbitration and mixed-voltage system integration without level translators or isolation diodes. |
| Built-in MR Debounce | Hardware-based 100 ns glitch rejection eliminates need for external RC filters or firmware debounce, reducing BOM count and layout area. |
Applications
| Automotive Safety Controller | Industrial PLC Module |
|---|---|
|
Use Scenario: Monitoring 4.5 V auxiliary power rail in ADAS domain controller during cold-crank and load-dump events. IC Role / Device Role / Timing Role: Supervisory circuit asserting RESET until VCC stabilizes above 4.39 V and holds for ≥140 ms post-brownout. Use Value: Prevents erratic MCU execution during transient undervoltage, meeting ISO 16750-2 pulse 4 compliance requirements. |
Use Scenario: Ensuring clean boot sequence for ARM Cortex-M7-based PLC CPU after AC/DC converter power-up. IC Role / Device Role / Timing Role: Generating guaranteed 140 ms reset pulse synchronized to 5 V rail stabilization, independent of FPGA or PMIC timing. Use Value: Eliminates race conditions between processor core, DDR memory, and peripheral initialization in deterministic real-time control loops. |
| Portable Medical Instrument | Smart Energy Meter |
|
Use Scenario: Supervising lithium-ion battery-backed 3.3 V rail in handheld ECG device during battery swap or deep discharge. IC Role / Device Role / Timing Role: Detecting VCC drop below 4.39 V (scaled via external resistor divider) and asserting RESET before analog front-end corruption. Use Value: Maintains data integrity and patient safety by forcing controlled shutdown before ADC reference collapse or op-amp saturation. |
Use Scenario: Validating 5 V DC-DC output in DIN-rail meter during grid voltage sags and harmonic distortion events. IC Role / Device Role / Timing Role: Providing immunity to 100 ns transients on MR line and accurate 4.39 V threshold tracking across −25°C to +70°C operating range. Use Value: Reduces false resets caused by switching noise from isolated DC-DC converters, improving meter uptime and firmware update reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US44D3+T | 4.40 V threshold (±2.0%), 140 ms timeout, 10 μA max supply current, same SOT-143 package. | Higher threshold tolerance stability over temperature (±1.5% to +85°C), but no MR glitch rejection spec provided. | Select when tighter threshold drift is critical and MR noise environment is controlled; verify MR debounce via external RC if needed. |
| TPS3808G33DBVR | 3.3 V fixed threshold, 200 ms timeout, push-pull RESET output, 16-pin SOT-23 package. | Fixed 3.3 V trip point incompatible with 4.39 V monitoring; push-pull output eliminates external pull-up but lacks wired-OR capability. | Choose only if redesigning for 3.3 V rail supervision and requiring active-high RESET; not a functional substitute for ADM6315-44D3ARTZRL. |
Compared with MAX6315US44D3+T and TPS3808G33DBVR, the ADM6315-44D3ARTZRL uniquely combines 4.39 V precision monitoring, 140 ms timeout, hardware MR debounce, and open-drain output in SOT-143 - making it optimal for legacy-compatible 4.5 V system supervision where signal-level flexibility and noise resilience are mandatory.
Availability
ADM6315-44D3ARTZRL is available at Aetrix Electronics and suitable for automotive safety controllers, industrial PLC modules, portable medical instruments, and smart energy meters requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.
Supply support for ADM6315-44D3ARTZRL 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 since 1965.
The ADM6315 family was designed specifically for cost-sensitive, space-constrained microprocessor supervision tasks requiring precision voltage monitoring, manual reset capability, and robust transient immunity - targeting automotive body electronics and industrial edge nodes.
FAQ
What is the exact reset threshold voltage for ADM6315-44D3ARTZRL?
The ADM6315-44D3ARTZRL has a nominal reset threshold of 4.39 V, with tolerance of ±2.5% over −40°C to +85°C and ±3.5% over −40°C to +125°C. This value is factory-trimmed and specified in Table 5 of the Rev. I datasheet. The ADM6315-44D3ARTZRL does not require external resistors to set this threshold - it is internally fixed.
Does ADM6315-44D3ARTZRL support manual reset functionality?
Yes, the ADM6315-44D3ARTZRL includes a dedicated MR (Manual Reset) pin (Pin 3) that is active-low and internally debounced. It rejects glitches shorter than 100 ns and reliably detects pulses ≥1 μs. The MR input uses a 0.3 × VCC logic low threshold when VTH < 4 V, making it compatible with both 3.3 V and 5 V control signals without level shifting.
What is the minimum reset timeout period for ADM6315-44D3ARTZRL?
The ADM6315-44D3ARTZRL provides a minimum reset timeout period of 140 ms after VCC rises above the 4.39 V threshold or after the MR pin is released. This value is guaranteed across −40°C to +85°C per Table 1 in the datasheet and ensures sufficient hold time for microprocessor, memory, and peripheral initialization sequences.
Can ADM6315-44D3ARTZRL operate with supply voltages below 2.5 V?
Yes, the ADM6315-44D3ARTZRL operates from VCC = 1 V to 5.5 V and asserts RESET down to VCC > 1 V. Its internal circuitry remains functional and maintains valid reset assertion even during deep brownout conditions - a key feature enabling safe shutdown in battery-powered or automotive cold-crank scenarios.
Is ADM6315-44D3ARTZRL pin-compatible with other supervisory ICs?
The ADM6315-44D3ARTZRL is pin-compatible with the ADM811 series in the same SOT-143 package, sharing identical pinout (GND, RESET, MR, VCC). However, it is not pin-compatible with MAX6315 variants due to differing MR logic thresholds and timeout coding schemes - direct substitution requires validation of reset timing and input compatibility.
ADM6315-44D3ARTZRL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- TO-253-4, TO-253AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 4.39V
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-143-4
ADM6315-44D3ARTZRL FAQ
1.How can I place an order for ADM6315-44D3ARTZRL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6315-44D3ARTZRL 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 ADM6315-44D3ARTZRL reliable?
The price and inventory of ADM6315-44D3ARTZRL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6315-44D3ARTZRL is usually 5 days.
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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6315-44D3ARTZRL transactions.
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ADM6315-44D3ARTZRL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6315-44D3ARTZRL 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 ADM6315-44D3ARTZRL?
For technical support, including ADM6315-44D3ARTZRL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6315-44D3ARTZRL requirements.
6.How does Aetrix verify that ADM6315-44D3ARTZRL is sourced from the original manufacturer or authorized distributors?
All ADM6315-44D3ARTZRL 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 ADM6315-44D3ARTZRL meets industry standards.
7.What is the process for return or replacement of ADM6315-44D3ARTZRL?
All ADM6315-44D3ARTZRL units undergo pre-shipment inspection (PSI). If there is an issue with ADM6315-44D3ARTZRL, 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 ADM6315-44D3ARTZRL part is unused and in its original packaging.
Return procedure for ADM6315-44D3ARTZRL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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