My Inquiry
My Account
Analog Devices Inc. ADM6346-44ARTZ-R7
- Part No.:
- ADM6346-44ARTZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADM6346-44ARTZ-R7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:3,253
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM6346-44ARTZ-R7 from Analog Devices is a precision ultralow-power microprocessor reset circuit in a 3-lead SOT-23 package, featuring a 4.38 V reset threshold (±2.5% over temperature), 100 ms minimum reset timeout, and active-low push-pull RESET output. It monitors supply rails down to 1 V, delivers 1 µA max supply current at 3 V, and operates across −40°C to +85°C for embedded microprocessor power sequencing.
For engineers reviewing the ADM6346-44ARTZ-R7 datasheet, ADM6346-44ARTZ-R7 pinout, ADM6346-44ARTZ-R7 application, or ADM6346-44ARTZ-R7 equivalent, key selection criteria include reset threshold accuracy, glitch immunity against negative VCC transients, push-pull drive capability without external pull-up, and compatibility with low-voltage brownout detection in portable and telecom systems.
Technical Context
The ADM6346-44ARTZ-R7 integrates a precision voltage reference, comparator with hysteresis (9.5 mV), and internal 100–280 ms reset timeout timer. Its push-pull output drives low to ≤0.3 V at 1.6 mA when asserted and high to ≥0.8 × VCC when deasserted, enabling direct interface to microprocessor reset inputs without external components.
It achieves glitch immunity by rejecting negative-going VCC transients up to 200 mV overdrive for durations under 1 µs (per Figure 5), and guarantees valid RESET operation down to VCC = 1.0 V - critical for detecting brownout conditions before system logic fails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold Voltage | 4.38 V ±2.5% (−40°C to +85°C); ensures reliable detection of 4.5 V rail brownout before microprocessor malfunction. |
| Supply Current | 1.0 µA max at 3 V; enables multi-year battery life in always-on portable monitoring circuits. |
| Reset Timeout Period | 100–280 ms (typ. 185 ms); holds processor in reset long enough for 5 V/3.3 V supplies to stabilize post-power-up. |
| Output Type | Active-low push-pull; eliminates need for external pull-up resistor and supports direct connection to MCU reset pins. |
| Operating Voltage Range | 1.0 V to 5.5 V; allows reset assertion even during deep brownout, preserving system integrity below nominal rail. |
| VOL (RESET Low) | ≤0.3 V at 1.6 mA sink; guarantees solid logic-low level compatible with TTL and CMOS reset inputs. |
| Temperature Range | −40°C to +85°C; qualified for industrial and telecom equipment operating in uncontrolled environments. |
Pinout & Package
ADM6346-44ARTZ-R7 is housed in a JEDEC-compliant 3-lead SOT-23-3 (RT-3) package with 270°C/W junction-to-ambient thermal resistance. The compact 2.9 mm × 1.3 mm footprint supports high-density PCB layouts in space-constrained applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | 0 V return path for internal reference and comparator; must be connected directly to system ground plane. |
| RESET (Pin 2) | Active-low push-pull output | Drives low during power-up/brownout; actively pulls high when deasserted - no external pull-up required. |
| VCC (Pin 3) | Monitored supply input | Connects to the voltage rail being supervised (e.g., 4.5 V system rail); powers internal circuitry and reference. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow ICC | 1 µA max supply current enables integration into energy-harvesting and coin-cell-powered systems. |
| Precision threshold | 4.38 V ±2.5% over full temperature range ensures consistent brownout detection across environmental extremes. |
| Glitch-immune comparator | Rejects <1 µs, >200 mV negative VCC transients - prevents spurious resets during switching noise or load dumps. |
| Push-pull RESET | Eliminates external pull-up resistor and associated BOM cost, layout area, and reliability risk. |
| 1 V operation limit | Asserts RESET down to VCC = 1.0 V - detects failure earlier than most 2.5 V+ supervisors. |
Applications
| Telecom Power Management | Industrial Microcontroller Systems |
|---|---|
|
Use Scenario: Monitoring 4.5 V bias rails in DSLAM line cards subject to lightning-induced transients and thermal cycling. IC Role / Device Role / Timing Role: Precision brownout detector with 4.38 V threshold and 185 ms timeout, ensuring clean restart after grid-sourced dips. Use Value: Prevents corrupted firmware execution during marginal 4.5 V rail collapse, reducing field failures in outdoor cabinets. |
Use Scenario: Supervising 5 V I/O rails in programmable logic controllers exposed to 85°C ambient and ESD events. IC Role / Device Role / Timing Role: Push-pull reset generator with −40°C to +85°C qualification and 1 µA quiescent current for low-power standby mode. Use Value: Enables fail-safe PLC boot sequence without external components, simplifying certification for industrial EMC standards. |
| Portable Medical Monitors | Networking Edge Devices |
|
Use Scenario: Battery-backed 4.5 V analog front-end in handheld ECG units where runtime and reliability are critical. IC Role / Device Role / Timing Role: Ultralow-power supervisor asserting RESET before Li-ion drops below 3.6 V, preserving data integrity during shutdown. Use Value: Extends usable battery life by >12 months versus higher-current alternatives while guaranteeing deterministic reset timing. |
Use Scenario: Reset control for dual-core ARM SoCs in fanless 5G small cells operating at 45°C case temperature. IC Role / Device Role / Timing Role: 4.38 V threshold matches SoC VDD_IO specification; push-pull output interfaces directly to SoC nRESET pin. Use Value: Removes pull-up resistor and associated parasitic capacitance, improving reset signal edge rate and noise margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326T438+T | 4.38 V threshold, open-drain output, 2.5 µA ICC, same SOT-23-3 package | Requires external pull-up; less suitable for high-noise environments due to weaker noise immunity specs | Select if open-drain flexibility is needed for wired-OR reset buses; verify pull-up value for target load capacitance. |
| TPS3808G33DBVR | 3.3 V threshold, push-pull output, 1.1 µA ICC, SOT-23-6 package with manual reset input | Fixed 3.3 V threshold; incompatible with 4.5 V rail supervision; adds manual reset pin not present in ADM6346-44ARTZ-R7 | Choose only for 3.3 V systems requiring manual reset override; not a functional substitute for 4.38 V monitoring. |
Compared with MAX6326T438+T and TPS3808G33DBVR, ADM6346-44ARTZ-R7 uniquely combines 4.38 V precision threshold, push-pull drive, and sub-1 µA supply current in a 3-pin SOT-23 - optimizing BOM count, board area, and brownout response for 4.5 V embedded systems.
Availability
ADM6346-44ARTZ-R7 is available at Aetrix Electronics and suitable for telecom power management, industrial microcontroller systems, portable medical monitors, and networking edge devices requiring stable component supply with RoHS-compliant packaging and extended temperature support.
Supply support for ADM6346-44ARTZ-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.
ADM6346-44ARTZ-R7 belongs to the ADM63xx family of ultralow-power microprocessor reset circuits designed specifically for reliable power-on reset and brownout protection in battery-powered and thermally demanding embedded systems.
FAQ
What is the exact reset threshold voltage of ADM6346-44ARTZ-R7 and how does it vary with temperature?
The ADM6346-44ARTZ-R7 has a nominal reset threshold of 4.38 V at 25°C, with guaranteed tolerance of ±2.5% over the full operating range of −40°C to +85°C. Per Table 2, the min/max thresholds are 4.27 V and 4.489 V respectively at temperature extremes. This tight drift ensures consistent brownout detection across thermal stress without recalibration.
Does ADM6346-44ARTZ-R7 require an external pull-up resistor on its RESET pin?
No, ADM6346-44ARTZ-R7 features an active-low push-pull RESET output and does not require an external pull-up resistor. Its output actively drives high (≥0.8 × VCC) when deasserted and low (≤0.3 V at 1.6 mA) when asserted - enabling direct connection to microprocessor reset inputs without additional components.
What is the minimum supply voltage at which ADM6346-44ARTZ-R7 remains functional?
ADM6346-44ARTZ-R7 guarantees valid RESET assertion down to VCC = 1.0 V, as specified in Absolute Maximum Ratings and confirmed in Theory of Operation. This allows early detection of severe brownout conditions before downstream logic enters undefined states, enhancing system robustness beyond typical 2.5 V+ supervisors.
How does ADM6346-44ARTZ-R7 handle fast power supply transients?
ADM6346-44ARTZ-R7 provides built-in glitch immunity against negative-going VCC transients, rejecting pulses up to 200 mV in magnitude for durations under 1 µs (per Figure 5). This prevents false resets caused by switching noise, ESD coupling, or load dump events - critical for telecom and industrial applications.
Is ADM6346-44ARTZ-R7 RoHS compliant and what is its package marking code?
Yes, ADM6346-44ARTZ-R7 is RoHS compliant (denoted by the "Z" suffix per Ordering Guide), packaged in a 3-lead SOT-23-3 (RT-3) with JEDEC TO-236-AB outline. Its top-side marking code is LD6, as listed in the Analog Devices Ordering Guide for model ADM6348-44ARTZ-R7 - confirming identical marking for this variant.
ADM6346-44ARTZ-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:
- 4.38V
- 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
ADM6346-44ARTZ-R7 FAQ
1.How can I place an order for ADM6346-44ARTZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6346-44ARTZ-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 ADM6346-44ARTZ-R7 reliable?
The price and inventory of ADM6346-44ARTZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6346-44ARTZ-R7 is usually 5 days.
3.What payment methods are accepted for ADM6346-44ARTZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6346-44ARTZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6346-44ARTZ-R7?
ADM6346-44ARTZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6346-44ARTZ-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 ADM6346-44ARTZ-R7?
For technical support, including ADM6346-44ARTZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6346-44ARTZ-R7 requirements.
6.How does Aetrix verify that ADM6346-44ARTZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADM6346-44ARTZ-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 ADM6346-44ARTZ-R7 meets industry standards.
7.What is the process for return or replacement of ADM6346-44ARTZ-R7?
All ADM6346-44ARTZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6346-44ARTZ-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 ADM6346-44ARTZ-R7 part is unused and in its original packaging.
Return procedure for ADM6346-44ARTZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM6346-44ARTZ-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…
