My Inquiry
My Account
Analog Devices Inc. ADM6315-31D3ARTZR7
- Part No.:
- ADM6315-31D3ARTZR7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-253-4, TO-253AA
- Datasheet:
-
ADM6315-31D3ARTZR7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT143-4
- Quantity:
- Payment:
- Shipping:
Inventory:2,103
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM6315-31D3ARTZR7 from Analog Devices is a precision open-drain microprocessor supervisory circuit in SOT-143 package, monitoring 3.08 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 - used for reliable power-up/brownout detection in automotive safety controllers.
For engineers reviewing the ADM6315-31D3ARTZR7 datasheet, ADM6315-31D3ARTZR7 pinout, ADM6315-31D3ARTZR7 application, or ADM6315-31D3ARTZR7 equivalent, key selection criteria include reset threshold tolerance, temperature range (−40°C to +125°C), manual reset input compatibility, open-drain output drive capability, and SOT-143 footprint constraints.
Technical Context
The ADM6315-31D3ARTZR7 implements a precision bandgap-based voltage reference comparator with built-in hysteresis and temperature compensation (60 ppm/°C), enabling stable 3.08 V trip point detection across industrial and automotive temperature ranges. Its internal timing circuit generates a guaranteed minimum 140 ms reset pulse after VCC rises above threshold or MR deasserts.
It features a debounced manual reset input (MR) with 100 ns glitch rejection and ≥1 μs pulse acceptance, plus an open-drain RESET output capable of sinking 3.2 mA at VCC > 4.25 V - allowing direct interface with higher-voltage logic families without level-shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.08 V ±2.5% (−40°C to +85°C); ensures reliable detection of 3.3 V rail degradation before system instability. |
| Reset Timeout | 140 ms minimum; guarantees sufficient hold time for microprocessor core and peripheral initialization during power-up. |
| Supply Current | 5 μA typical at 3.6 V; enables ultra-low-power operation in battery-backed or energy-constrained systems. |
| Operating Voltage | 1 V to 5.5 V; supports reset assertion even during deep brownout conditions where VCC drops below 2.5 V. |
| Reset Delay | 35 μs typical (VCC falling at 1 mV/μs); provides fast response to transient supply dips before logic corruption occurs. |
| Manual Reset Input | VIL ≤ 0.3×VCC, VIH ≥ 0.7×VCC; compatible with standard CMOS logic and mechanical switch interfaces. |
| Output Type | Open-drain RESET; allows wired-OR configuration and interface with 5 V or 3.3 V host logic regardless of ADM6315 VCC. |
Pinout & Package
Package: 4-Lead SOT-143 (RA-4), surface-mount, 1.2 mm × 2.1 mm footprint, 0.95 mm height, thermal resistance θJA = 330°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground Reference | 0 V return path for all internal comparators and output driver; 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 logic rail; asserts during VCC undervoltage or MR low. |
| 3 (MR) | Debounced Manual Reset Input | Active-low; ignores <100 ns noise; accepts ≥1 μs pulses; floats high when unused (internal 63 kΩ pull-up). |
| 4 (VCC) | Monitored Supply Input | Primary power source and voltage sense node; powers internal circuitry and defines reset threshold reference. |
Key Features
| Feature | Design Value |
|---|---|
| Precision Trip Point | 3.08 V with ±2.5% tolerance over −40°C to +85°C - eliminates need for external trimming in 3.3 V systems. |
| Guaranteed Reset Timeout | 140 ms minimum - ensures full stabilization of PLLs, memory, and peripherals before processor exit from reset. |
| Ultra-Low Quiescent Current | 5 μA typical - extends battery life in portable instrumentation and always-on automotive modules. |
| Brownout Response Speed | 35 μs typical detection delay - prevents partial execution or register corruption during rapid VCC collapse. |
| Robust MR Interface | 100 ns glitch immunity + 1 μs minimum pulse acceptance - enables reliable switch or FPGA-driven reset in noisy environments. |
Applications
| Automotive Safety Controller | Industrial PLC Module |
|---|---|
Use Scenario: Monitoring 3.3 V supply in airbag control unit during cold-crank and load-dump transients. IC Role / Device Role / Timing Role: Supervisory circuit asserting RESET to microcontroller upon VCC drop below 3.08 V or user-triggered MR event. Use Value: Prevents unsafe deployment by ensuring MCU remains held in reset until supply stabilizes post-brownout. | Use Scenario: Power sequencing and fault recovery in modular I/O base unit operating from 24 V DC-DC converted to 3.3 V. IC Role / Device Role / Timing Role: Voltage monitor and system-wide reset generator with 140 ms timeout to coordinate firmware boot across multiple ASICs. Use Value: Eliminates race conditions during power-up by guaranteeing synchronized release from reset across distributed logic blocks. |
| Portable Medical Instrument | Smart Energy Meter |
Use Scenario: Battery-powered handheld glucose analyzer requiring fail-safe reset during Li-ion voltage sag below 3.0 V. IC Role / Device Role / Timing Role: Low-power supervisor detecting 3.08 V threshold with sub-μA quiescent draw during sleep mode. Use Value: Extends usable battery runtime while maintaining deterministic reset behavior under aging or low-temperature discharge. | Use Scenario: Tamper-resistant meter with isolated MCU and metrology IC powered from regulated 3.3 V rail. IC Role / Device Role / Timing Role: Fault-tolerant reset source with manual override (MR) for field calibration and firmware recovery. Use Value: Enables certified secure re-initialization without hardware disassembly or proprietary tools. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6315US31D3+T | Same 3.08 V threshold and 140 ms timeout; 10 μA max supply current vs. ADM6315's 12 μA at 5.5 V/125°C. | Pin-compatible but uses SOT-23-4 instead of SOT-143; slightly larger footprint and higher θJA (370°C/W). | Select for legacy SOT-23 board reuse; verify thermal margin in high-ambient designs. |
| TPS3808G33DBVR | 3.3 V threshold (not 3.08 V); fixed 200 ms timeout; 1.5 μA typical IQ; no manual reset input. | Lacks MR pin and offers coarser threshold resolution; suited for simpler reset-only use cases without user intervention. | Choose when precise 3.08 V detection and manual reset are unnecessary and ultra-low IQ is critical. |
Compared with MAX6315US31D3+T and TPS3808G33DBVR, the ADM6315-31D3ARTZR7 uniquely combines 3.08 V precision, 140 ms timeout, manual reset, and SOT-143 compactness - making it optimal for space-constrained automotive and portable systems requiring deterministic brownout recovery and operator-initiated reset.
Availability
ADM6315-31D3ARTZR7 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 across extended temperature and long production lifecycles.
Supply support for ADM6315-31D3ARTZR7 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 robust, low-power microprocessor supervision in harsh environments - emphasizing precision threshold stability, wide temperature operation, and noise-immune manual reset functionality.
FAQ
What is the exact reset threshold voltage of the ADM6315-31D3ARTZR7?
The ADM6315-31D3ARTZR7 has a nominal reset threshold of 3.08 V, with tolerance of ±2.5% over −40°C to +85°C and ±3.5% over −40°C to +125°C. This value is laser-trimmed at wafer test and confirmed in Table 5 of the official datasheet. The ADM6315-31D3ARTZR7 is part of the D3 timeout variant, meaning its minimum reset timeout is 140 ms.
Does the ADM6315-31D3ARTZR7 support manual reset, and how is it implemented?
Yes, the ADM6315-31D3ARTZR7 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. When pulled low, it forces RESET assertion regardless of VCC level. An internal 63 kΩ pull-up holds MR high when unused, eliminating external components in most designs.
What package type and footprint does the ADM6315-31D3ARTZR7 use?
The ADM6315-31D3ARTZR7 uses the 4-Lead SOT-143 (RA-4) package: 1.2 mm × 2.1 mm body size, 0.95 mm max height, with gull-wing leads. Its land pattern matches JEDEC MO-178AA, and thermal resistance is θJA = 330°C/W. This compact, surface-mount package supports high-density PCB layouts in automotive and portable applications.
Can the ADM6315-31D3ARTZR7 operate with supply voltages below 2.5 V?
Yes, the ADM6315-31D3ARTZR7 operates down to VCC = 1 V and asserts RESET as long as VCC remains below its 3.08 V threshold. Its internal circuitry remains functional and guarantees reset assertion even during deep brownout events - a key feature confirmed in the General Description and Absolute Maximum Ratings sections of the datasheet.
Is the ADM6315-31D3ARTZR7 pin-compatible with other members of the ADM6315 family?
Yes, all ADM6315 variants - including ADM6315-31D3ARTZR7 - share identical SOT-143 pinout (GND, RESET, MR, VCC) and electrical interface. Threshold voltage (e.g., 3.08 V) and timeout (e.g., 140 ms) are factory-set per model; swapping variants requires no PCB change but may affect system timing and voltage-margin behavior.
ADM6315-31D3ARTZR7 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:
- 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
ADM6315-31D3ARTZR7 FAQ
1.How can I place an order for ADM6315-31D3ARTZR7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6315-31D3ARTZR7 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 ADM6315-31D3ARTZR7 reliable?
The price and inventory of ADM6315-31D3ARTZR7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6315-31D3ARTZR7 is usually 5 days.
3.What payment methods are accepted for ADM6315-31D3ARTZR7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6315-31D3ARTZR7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6315-31D3ARTZR7?
ADM6315-31D3ARTZR7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6315-31D3ARTZR7 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 ADM6315-31D3ARTZR7?
For technical support, including ADM6315-31D3ARTZR7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6315-31D3ARTZR7 requirements.
6.How does Aetrix verify that ADM6315-31D3ARTZR7 is sourced from the original manufacturer or authorized distributors?
All ADM6315-31D3ARTZR7 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 ADM6315-31D3ARTZR7 meets industry standards.
7.What is the process for return or replacement of ADM6315-31D3ARTZR7?
All ADM6315-31D3ARTZR7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6315-31D3ARTZR7, 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 ADM6315-31D3ARTZR7 part is unused and in its original packaging.
Return procedure for ADM6315-31D3ARTZR7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM6315-31D3ARTZR7 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…
