My Inquiry
My Account
Analog Devices Inc. ADM6346-45ARTZ-R7
- Part No.:
- ADM6346-45ARTZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADM6346-45ARTZ-R7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:2,330
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM6346-45ARTZ-R7 from Analog Devices is an ultralow-power microprocessor reset circuit with push-pull active-low RESET output, 4.5 V reset threshold (±2.5% over temperature), 100 ms minimum reset timeout, and 1 µA maximum supply current at 3 V. It monitors VCC in brownout, power-up, and power-down conditions and remains functional down to 1 V supply, making it suitable for portable equipment and embedded systems requiring reliable power sequencing.
For engineers reviewing the ADM6346-45ARTZ-R7 datasheet, ADM6346-45ARTZ-R7 pinout, ADM6346-45ARTZ-R7 application, or ADM6346-45ARTZ-R7 equivalent, key selection criteria include reset threshold accuracy, glitch immunity against negative-going VCC transients, push-pull drive capability without external pull-up, and operation across −40°C to +85°C in a space-constrained SOT-23-3 package.
Technical Context
The ADM6346-45ARTZ-R7 integrates a precision voltage reference, comparator with hysteresis (9.5 mV), and a 100–280 ms internal reset timer. Its push-pull output drives low with ≤0.3 V at 1.6 mA when asserted and sources ≥0.8 × VCC when deasserted, enabling direct interface with microprocessor reset inputs without external components.
It operates across 1.0 V to 5.5 V supply range and maintains valid RESET assertion down to VCC = 1 V. The device achieves ±2.5% threshold tolerance over −40°C to +85°C and exhibits 40 ppm/°C temperature coefficient, ensuring stable trip point across industrial temperature extremes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 4.5 V ±2.5% over −40°C to +85°C - ensures reliable detection of 4.5 V rail collapse before downstream logic fails. |
| Supply Current | 1.0 µA max at 3 V - enables multi-year battery life in always-on monitoring applications. |
| Reset Timeout | 100–280 ms - holds microprocessor in reset long enough for power supply stabilization after cold start. |
| Output Type | Active-low push-pull - eliminates need for external pull-up resistor and supports direct connection to MCU reset pins. |
| VCC Operating Range | 1.0 V to 5.5 V - allows reset assertion even during deep brownout, preventing partial system operation. |
| Hysteresis | 9.5 mV - prevents oscillation near threshold during slow-ramping or noisy supply conditions. |
| Reset Propagation Delay | 20 µs typical from VCC drop below VTH - ensures fast system-wide reset before any IC exceeds its minimum VCC rating. |
Pinout & Package
ADM6346-45ARTZ-R7 is housed in a JEDEC-compliant 3-lead SOT-23-3 (RT-3) package with 270°C/W junction-to-ambient thermal resistance, optimized for compact PCB layouts and reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | 0 V return path for internal reference and comparator; must be connected to system ground plane for accurate threshold sensing. |
| RESET (Pin 2) | Active-low push-pull output | Drives low (≤0.3 V @ 1.6 mA) during reset; pulls high to ≥0.8 × VCC when deasserted - directly interfaces with standard CMOS reset inputs. |
| VCC (Pin 3) | Monitored supply input | Connects to the 4.5 V rail being supervised; powers internal circuitry and determines reset assertion/deassertion timing. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow ICC | 1 µA max enables integration into energy-harvesting and coin-cell-powered systems without measurable battery drain. |
| Glitch-immune comparator | Rejects negative-going VCC transients up to 200 mV for durations <1 µs - prevents false resets from switching noise or ESD coupling. |
| Wide VCC operating range | Functions from 1.0 V to 5.5 V - supports reset assertion during deep undervoltage events where other supervisors fail silently. |
| Precision 4.5 V threshold | Guaranteed 4.432 V to 4.567 V at 25°C and 4.387 V to 4.612 V over full temperature range - matches 4.5 V LDO outputs and FPGA core rails. |
| Push-pull RESET output | Eliminates external pull-up resistor and associated board area, BOM cost, and signal rise-time uncertainty. |
Applications
| Telecom Power Management | Industrial Microcontroller Systems |
|---|---|
|
Use Scenario: Monitoring 4.5 V bias rail in optical line terminal (OLT) power modules subject to lightning-induced transients. IC Role / Device Role / Timing Role: Supervisor IC asserting active-low RESET to ARM Cortex-M7 MCU during brownout, with 100 ms hold time to prevent premature firmware execution. Use Value: Prevents corrupted register writes and flash memory corruption by ensuring MCU remains held until DC/DC converter output stabilizes post-fault. |
Use Scenario: Supervising 4.5 V fieldbus I/O module powered from isolated DC/DC converter in harsh factory environments. IC Role / Device Role / Timing Role: Reset generator providing glitch-immune VCC monitoring and guaranteed reset pulse >100 ms during AC line sags. Use Value: Maintains deterministic system recovery without watchdog intervention, reducing MTTR in unattended PLC gateways. |
| Portable Medical Sensors | Automotive Infotainment Subsystems |
|
Use Scenario: Battery-backed glucose meter with 4.5 V analog front-end powered from boost regulator. IC Role / Device Role / Timing Role: Low-current supervisor holding ADC/MCU in reset until regulated 4.5 V rail reaches stability after cold start from depleted Li-ion cell. Use Value: Eliminates measurement offset errors caused by analog circuitry powering up before reference voltage settles. |
Use Scenario: 4.5 V audio DSP supply in head unit exposed to load-dump and cold-crank transients. IC Role / Device Role / Timing Role: Reset circuit with 9.5 mV hysteresis and 20 µs response detecting rapid VCC collapse during alternator failure. Use Value: Triggers clean DSP reboot before digital logic enters metastable state, avoiding audio artifacts or bus lockup. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6346EUR+T | 4.5 V threshold, push-pull output, but 2.5 µA max ICC and no guaranteed operation below 1.2 V. | Lacks deep-brownout support; unsuitable for sub-1.2 V fault detection in ultra-low-power designs. | Select only if supply current >1 µA is acceptable and VCC never drops below 1.2 V during faults. |
| TPS3808G33DBVR | 3.3 V fixed threshold, open-drain output, 1.8 µA ICC, requires external pull-up and cannot monitor 4.5 V rails directly. | Not electrically compatible - mismatched threshold and output structure necessitates redesign of reset network. | Use only if redesigning for 3.3 V rail supervision and accepting added component count and timing uncertainty. |
Compared with MAX6346EUR+T and TPS3808G33DBVR, the ADM6346-45ARTZ-R7 uniquely combines 4.5 V threshold accuracy, sub-1 V operation, push-pull drive, and 1 µA supply current - enabling single-component, zero-BOM-addition reset supervision for 4.5 V systems with stringent power and reliability requirements.
Availability
ADM6346-45ARTZ-R7 is available at Aetrix Electronics and suitable for telecom power management, industrial microcontroller systems, portable medical sensors, and automotive infotainment subsystems requiring stable component supply with RoHS-compliant packaging and extended temperature support.
Supply support for ADM6346-45ARTZ-R7 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 ADM63xx family delivers ultralow-power, precision voltage supervision for microprocessor-based systems where reliability under brownout, transient, and battery-depletion conditions is critical.
FAQ
What is the exact reset threshold voltage of ADM6346-45ARTZ-R7 over temperature?
The ADM6346-45ARTZ-R7 has a nominal reset threshold of 4.5 V at 25°C, with guaranteed range of 4.387 V to 4.612 V over −40°C to +85°C per Table 2 of the Rev. B datasheet. This ±2.5% tolerance ensures robust detection of 4.5 V rail failures across industrial temperature extremes without false triggering.
Does ADM6346-45ARTZ-R7 require an external pull-up resistor on the RESET pin?
No, ADM6346-45ARTZ-R7 features an active-low push-pull RESET output and does not require an external pull-up resistor. Its output actively drives high to ≥0.8 × VCC when deasserted, enabling direct connection to standard CMOS reset inputs without additional components - a key differentiator from open-drain alternatives like ADM6348-45ARTZ-R7.
Can ADM6346-45ARTZ-R7 operate when the monitored VCC drops below 1.2 V?
Yes, ADM6346-45ARTZ-R7 guarantees valid RESET assertion down to VCC = 1.0 V, as specified in the Absolute Maximum Ratings and General Description sections. This enables reliable brownout detection in battery-powered systems where supply voltage may sag deeply before shutdown, unlike many competitors that cease operation above 1.2 V.
What is the minimum reset timeout duration for ADM6346-45ARTZ-R7?
The ADM6346-45ARTZ-R7 provides a minimum reset timeout of 100 ms after VCC rises above the threshold, with typical value of 185 ms and maximum of 280 ms over temperature. This ensures sufficient hold time for power supply stabilization and microprocessor initialization before release from reset - critical for reliable cold-start behavior.
How does ADM6346-45ARTZ-R7 handle fast negative transients on the VCC line?
ADM6346-45ARTZ-R7 incorporates built-in glitch immunity that rejects negative-going VCC transients up to 200 mV amplitude for durations under 1 µs, as characterized in Figure 5 of the datasheet. This prevents spurious resets caused by switching noise, ESD, or load-dump events - a key requirement in noisy industrial and automotive power environments.
ADM6346-45ARTZ-R7 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:
- 4.5V
- Output:
- Push-Pull, Totem Pole
- Reset:
- Active Low
- Reset Timeout:
- 100ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ADM6346-45ARTZ-R7 FAQ
1.How can I place an order for ADM6346-45ARTZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6346-45ARTZ-R7 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 ADM6346-45ARTZ-R7 reliable?
The price and inventory of ADM6346-45ARTZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6346-45ARTZ-R7 is usually 5 days.
3.What payment methods are accepted for ADM6346-45ARTZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6346-45ARTZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6346-45ARTZ-R7?
ADM6346-45ARTZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6346-45ARTZ-R7 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 ADM6346-45ARTZ-R7?
For technical support, including ADM6346-45ARTZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6346-45ARTZ-R7 requirements.
6.How does Aetrix verify that ADM6346-45ARTZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADM6346-45ARTZ-R7 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 ADM6346-45ARTZ-R7 meets industry standards.
7.What is the process for return or replacement of ADM6346-45ARTZ-R7?
All ADM6346-45ARTZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6346-45ARTZ-R7, 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 ADM6346-45ARTZ-R7 part is unused and in its original packaging.
Return procedure for ADM6346-45ARTZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM6346-45ARTZ-R7 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…
