My Inquiry
My Account
Analog Devices Inc. ADM6348-39ARTZ-R7
- Part No.:
- ADM6348-39ARTZ-R7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ADM6348-39ARTZ-R7.pdf
- Description:
- IC SUPERVISOR 1 CHANNEL SOT23-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,908
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ADM6348-39ARTZ-R7 from Analog Devices is an ultralow-power, open-drain microprocessor reset circuit in a 3-lead SOT-23 package, monitoring 3.9 V supply rails with ±2.5% threshold accuracy over −40°C to +85°C, 1 µA max supply current, and 100 ms minimum reset timeout-used for reliable power-up sequencing in portable microprocessor systems.
For engineers reviewing the ADM6348-39ARTZ-R7 datasheet, ADM6348-39ARTZ-R7 pinout, ADM6348-39ARTZ-R7 application, or ADM6348-39ARTZ-R7 equivalent, key selection criteria include open-drain output compatibility with bidirectional reset pins, VCC operation down to 1 V, glitch immunity against negative-going transients, and precise 3.9 V threshold for 3.3 V–4.2 V system rail supervision.
Technical Context
The ADM6348-39ARTZ-R7 implements a precision bandgap-based voltage comparator with built-in hysteresis (9.5 mV) and a 100–280 ms reset timeout timer. Its open-drain RESET output requires an external pull-up resistor and remains functional down to VCC = 1 V, enabling brownout detection even during deep undervoltage conditions.
It delivers glitch immunity against fast negative VCC transients up to 100 V/µs, with reset assertion within 20 µs (typical) when VCC falls below 3.9 V ±2.5%. The device operates across the full industrial temperature range without derating and draws only 1.0 µA (max) at 3.2 V, making it suitable for battery-powered applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reset Threshold | 3.9 V ±2.5% (3.802 V to 3.997 V at −40°C to +85°C); ensures accurate 3.3 V/3.8 V rail supervision without false resets. |
| Supply Current | 1.0 µA maximum at VCC = 3.2 V; enables multi-year battery life in always-on portable equipment. |
| Reset Timeout | 100–280 ms (typical 185 ms); holds microprocessor in reset long enough for power supply stabilization post-power-up. |
| Output Type | Active-low open-drain RESET; supports wired-OR configuration and bidirectional reset interfaces with external pull-up. |
| VCC Operating Range | 1.0 V to 5.5 V; guarantees valid reset signaling even during severe brownout or partial power loss. |
| Hysteresis | 9.5 mV; prevents oscillatory reset behavior near threshold due to noise or slow-rising VCC. |
| Temperature Range | −40°C to +85°C; qualified for industrial and extended-temperature embedded systems. |
Pinout & Package
ADM6348-39ARTZ-R7 is housed in a JEDEC-compliant 3-lead SOT-23-3 (RT-3) package with 270°C/W junction-to-ambient thermal resistance, surface-mount footprint (2.90 mm × 1.30 mm), and RoHS-compliant lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Ground reference | 0 V return path for internal comparator and reset logic; must be low-impedance connection to system ground plane. |
| RESET (Pin 2) | Active-low open-drain output | Sinks up to 1.6 mA when asserted; requires external pull-up resistor (typically 10 kΩ) to host VCC or I/O rail. |
| VCC (Pin 3) | Monitored supply input | Connects directly to the 3.9 V rail being supervised; powers internal circuitry and enables reset assertion below threshold. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow ICC | 1.0 µA max supply current enables integration into energy-harvesting and coin-cell-powered systems. |
| Open-drain RESET | Supports shared reset bus architectures and bidirectional microprocessor reset pins without level-shifting. |
| Glitch-immune comparator | Rejects negative VCC transients ≤100 V/µs, preventing spurious resets during switching noise or load dumps. |
| 1 V minimum VCC operation | Asserts RESET down to 1 V supply, ensuring fail-safe behavior during deep brownout or battery depletion. |
| Factory-trimmed threshold | 3.9 V threshold calibrated at wafer test with ±2.5% tolerance over full temperature range-no external components required. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered wearable ECG sensor operating from a 3.7 V Li-ion cell with tight voltage margin between nominal and cutoff. IC Role / Device Role / Timing Role: Monitors main 3.9 V regulated rail and asserts open-drain RESET to halt MCU execution before brownout-induced data corruption. Use Value: 1 µA quiescent current extends battery life; 3.9 V threshold aligns precisely with LDO dropout point; 185 ms timeout ensures stable ADC reference settling before wake-up. |
Use Scenario: DIN-rail mounted PLC module with isolated 3.3 V digital supply subject to field-induced transients and wide ambient temperature swings. IC Role / Device Role / Timing Role: Provides robust power-on reset and brownout protection for ARM Cortex-M7 controller, interfacing via shared reset bus with other peripherals. Use Value: Open-drain output enables wired-OR reset arbitration; −40°C to +85°C rating ensures reliability in uncontrolled cabinets; 9.5 mV hysteresis suppresses noise-induced chatter on noisy 24 V DC-fed rails. |
| Wireless Edge Node Gateways | Automotive Infotainment Subsystems |
Use Scenario: LoRaWAN gateway powered by buck-boost converter delivering 3.9 V to RF SoC and MCU under variable solar/battery input. IC Role / Device Role / Timing Role: Supervises 3.9 V domain and drives active-low RESET to both SoC and transceiver, synchronized to power-good signal. Use Value: 20 µs fast response prevents RF lockup during transient dips; 100 V/µs glitch immunity rejects switcher ringing; RoHS-compliant SOT-23 simplifies automated assembly. |
Use Scenario: Head unit display controller board receiving 3.9 V from vehicle's 12 V DC-DC converter, exposed to load-dump and cold-crank events. IC Role / Device Role / Timing Role: Acts as primary reset supervisor for display driver ASIC and touch controller, asserting RESET during undervoltage and recovering cleanly after recovery. Use Value: Valid operation down to 1 V prevents latch-up during cold-crank (battery sag to ~6 V → 3.9 V rail collapse); 2.5% threshold tolerance meets AEC-Q200 functional safety margin requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar microprocessor reset applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6326–T39 | 3.9 V threshold, push-pull output, 1.2 µA max ICC, same SOT-23-3 package | Requires redesign of pull-up network; not compatible with wired-OR or bidirectional reset buses | Select when system uses dedicated reset line and needs higher sink/source drive without external resistor. |
| TPS3808G39DBVR | 3.9 V threshold, open-drain output, 1.8 µA max ICC, 200 ms fixed timeout, SOT-23-6 package | Larger footprint and extra enable/pin count; higher quiescent current reduces battery lifetime | Choose if longer timeout or enable control is needed; avoid when board space or ultra-low ICC is critical. |
Compared with MAX6326–T39 and TPS3808G39DBVR, ADM6348-39ARTZ-R7 uniquely combines open-drain output, 1 µA max ICC, and 3-lead SOT-23 packaging-enabling minimal BOM count, lowest power consumption, and direct compatibility with legacy bidirectional reset architectures without layout changes.
Availability
ADM6348-39ARTZ-R7 is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, wireless edge node gateways, and automotive infotainment subsystems requiring stable component supply, long-term lifecycle support, and RoHS-compliant sourcing.
Supply support for ADM6348-39ARTZ-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, communications, automotive, and consumer markets since 1965.
The ADM63xx family delivers precision, ultralow-power reset supervision for microprocessor-based systems where reliability, battery life, and board space are critical constraints-designed specifically for portable, industrial, and automotive embedded applications.
FAQ
What is the exact reset threshold voltage of ADM6348-39ARTZ-R7 and how does it vary with temperature?
The ADM6348-39ARTZ-R7 has a nominal reset threshold of 3.9 V at 25°C, with guaranteed range of 3.802 V to 3.997 V across −40°C to +85°C. This ±2.5% tolerance includes initial accuracy and temperature coefficient of 40 ppm/°C, ensuring stable trip point without calibration across industrial environments. The device uses factory-trimmed bandgap reference for this performance.
Does ADM6348-39ARTZ-R7 require an external pull-up resistor, and what value is recommended?
Yes, ADM6348-39ARTZ-R7 features an active-low open-drain RESET output and requires an external pull-up resistor. A 10 kΩ resistor to the host logic rail (e.g., 3.3 V or 3.9 V) is typical, providing sufficient rise time while limiting current to <100 µA during reset assertion. The device sinks up to 1.6 mA when RESET is low, so resistor value must ensure VOL ≤ 0.3 V at ISINK = 1.6 mA.
Can ADM6348-39ARTZ-R7 operate reliably during brownout conditions where VCC drops below 2 V?
Yes, ADM6348-39ARTZ-R7 remains fully functional down to VCC = 1.0 V. Its internal circuitry continues to monitor the supply and assert RESET as long as VCC stays above absolute minimum rating. At VCC ≥ 1.2 V, it guarantees VOL ≤ 0.4 V with 100 µA sink current-ensuring clean reset signaling even during deep brownout or battery depletion scenarios.
What is the reset timeout duration of ADM6348-39ARTZ-R7, and is it adjustable?
The ADM6348-39ARTZ-R7 provides a fixed reset timeout of 100 ms minimum, 185 ms typical, and 280 ms maximum after VCC rises above threshold. This timing is generated by an internal RC oscillator and is not user-adjustable. It is designed to exceed typical power supply stabilization times for 3.3 V–4.2 V rails in portable and industrial systems.
How does ADM6348-39ARTZ-R7 handle fast voltage transients on the VCC line?
ADM6348-39ARTZ-R7 incorporates built-in glitch immunity that rejects negative-going VCC transients up to 100 V/µs. Its comparator includes filtering and hysteresis (9.5 mV), ensuring RESET is not falsely asserted by switching noise, ESD bursts, or load-dump events. Figure 5 in the datasheet quantifies maximum tolerable pulse duration versus overdrive magnitude.
ADM6348-39ARTZ-R7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- TO-236-3, SC-59, SOT-23-3
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Simple Reset/Power-On Reset
- Number of Voltages Monitored:
- 1
- Voltage - Threshold:
- 3.9V
- Output:
- Open Drain or Open Collector
- 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
ADM6348-39ARTZ-R7 FAQ
1.How can I place an order for ADM6348-39ARTZ-R7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6348-39ARTZ-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 ADM6348-39ARTZ-R7 reliable?
The price and inventory of ADM6348-39ARTZ-R7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6348-39ARTZ-R7 is usually 5 days.
3.What payment methods are accepted for ADM6348-39ARTZ-R7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6348-39ARTZ-R7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6348-39ARTZ-R7?
ADM6348-39ARTZ-R7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6348-39ARTZ-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 ADM6348-39ARTZ-R7?
For technical support, including ADM6348-39ARTZ-R7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6348-39ARTZ-R7 requirements.
6.How does Aetrix verify that ADM6348-39ARTZ-R7 is sourced from the original manufacturer or authorized distributors?
All ADM6348-39ARTZ-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 ADM6348-39ARTZ-R7 meets industry standards.
7.What is the process for return or replacement of ADM6348-39ARTZ-R7?
All ADM6348-39ARTZ-R7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6348-39ARTZ-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 ADM6348-39ARTZ-R7 part is unused and in its original packaging.
Return procedure for ADM6348-39ARTZ-R7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ADM6348-39ARTZ-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…
