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Analog Devices Inc. ADM6339FARJZ-RL7
- Part No.:
- ADM6339FARJZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
ADM6339FARJZ-RL7.pdf
- Description:
- IC MCU SUP 5/3/2.5/ADJ SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:6,000
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Product details
Overview
ADM6339FARJZ-RL7 from Analog Devices is a quad-voltage microprocessor supervisory circuit designed to monitor +5.0 V, +3.0 V, +2.5 V, and adjustable +1.23 V supply rails with ±5% threshold tolerance. It delivers 200 ms typical reset timeout, open-drain active-low RESET output with internal 10 μA pull-up to IN2, and operates across −40°C to +85°C in telecom and server power sequencing.
For engineers reviewing the ADM6339FARJZ-RL7 datasheet, ADM6339FARJZ-RL7 pinout, ADM6339FARJZ-RL7 application, or ADM6339FARJZ-RL7 equivalent, key selection criteria include factory-trimmed four-rail monitoring capability, guaranteed RESET validity down to IN1 or IN2 = 1 V, low 55 μA quiescent current, glitch-immune comparator architecture, and SOT-23-6 packaging for space-constrained embedded systems.
Technical Context
The ADM6339FARJZ-RL7 integrates four independent voltage comparators with pretrimmed thresholds for +5.0 V (−5% tol), +3.0 V (−5% tol), +2.5 V (−5% tol), and adjustable +1.23 V (±0.8% tol). Each input features 0.3% VTH hysteresis and supports transient immunity up to 900 µs at 10 mV overdrive.
Its RESET output is open-drain with internal 10 µA pull-up to IN2, remains valid as long as IN1 ≥ 1 V or IN2 ≥ 1 V, and asserts low when any monitored rail falls below its threshold (or rises above for negative options - not applicable here). The device draws only 55 µA total supply current from IN2.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Monitored Voltages | +5.0 V, +3.0 V, +2.5 V, and adjustable +1.23 V inputs - enables simultaneous validation of core, I/O, analog, and reference rails in multi-supply systems. |
| Threshold Tolerance | ±5% for all fixed thresholds - ensures reliable reset assertion across voltage drift and temperature variation without external trimming. |
| Reset Timeout | 140–280 ms (typical 200 ms) - provides sufficient hold time for processor initialization and peripheral stabilization after power recovery. |
| Supply Current | 55 µA typical - minimizes impact on system standby power budget while maintaining full supervision functionality. |
| Operating Temp | −40°C to +85°C - supports industrial and telecom equipment deployed in uncontrolled thermal environments. |
| RESET Output Type | Open-drain with 10 µA internal pull-up to IN2 - eliminates need for external pull-up in many logic interfaces and simplifies level-shifting design. |
| Input Hysteresis | 0.3% of VTH - prevents false resets during brief supply transients or noise spikes on monitored rails. |
Pinout & Package
ADM6339FARJZ-RL7 is housed in a JEDEC-compliant 6-lead SOT-23 package (RJ-6), measuring 2.90 mm × 1.60 mm × 1.15 mm, with gull-wing leads and tape-and-reel packaging (RL7).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN1 | Monitored Input Voltage 1 | Fixed +5.0 V threshold input - connects directly to main system rail; must be ≥1 V for RESET validity. |
| IN2 | Monitored Input Voltage 2 / Device Power Supply | Fixed +3.0 V threshold input and primary VCC source - powers internal circuitry; RESET pull-up references this node. |
| IN3 | Monitored Input Voltage 3 | Fixed +2.5 V threshold input - used for analog or memory supply monitoring; requires stable bias above 1 V. |
| IN4 | Monitored Input Voltage 4 | Adjustable +1.23 V threshold input - supports custom rail monitoring via external resistor divider; ±0.8% accuracy. |
| GND | Ground Reference | Common return path for all comparators and RESET driver - must be low-impedance to ensure threshold stability. |
| RESET | Active-Low Open-Drain Output | Asserts low when any input violates threshold; remains low for 200 ms post-recovery; compatible with 1.8–5.5 V logic families. |
Key Features
| Feature | Design Value |
|---|---|
| Four-rail monitoring | Simultaneously validates +5.0 V, +3.0 V, +2.5 V, and +1.23 V supplies - eliminates need for multiple discrete supervisors in complex power architectures. |
| Factory-trimmed thresholds | ±5% accuracy on all fixed thresholds - removes calibration overhead and reduces BOM count versus resistor-based solutions. |
| Low-power operation | 55 µA typical supply current - extends battery life in always-on monitoring applications and reduces thermal load in dense PCB layouts. |
| Glitch-immune comparators | 0.3% VTH hysteresis and validated 900 µs transient rejection - prevents spurious resets during switching noise or load-dump events. |
| Valid RESET at low supply | RESET state guaranteed with IN1 ≥ 1 V or IN2 ≥ 1 V - enables robust reset signaling even during brown-out conditions before full rail stabilization. |
Applications
| Telecom Power Sequencing | Server Board Management |
|---|---|
Use Scenario: Monitoring +5.0 V, +3.0 V, +2.5 V, and +1.23 V rails in line-card power subsystems where sequential startup and fault isolation are critical. IC Role / Device Role / Timing Role: Quad-supply supervisor enforcing power-good sequencing and generating system-wide reset pulse upon any rail failure. Use Value: Prevents firmware corruption and hardware damage by ensuring CPU, FPGA, and PHYs only initialize after all supplies meet specification. |
Use Scenario: Validating auxiliary, core, memory, and reference voltages on dual-socket server motherboards with redundant PSUs. IC Role / Device Role / Timing Role: Centralized voltage integrity monitor feeding BMC watchdog and triggering graceful shutdown on sustained undervoltage. Use Value: Enables deterministic fail-safe behavior during PSU switchover and improves MTBF through early fault detection before thermal runaway. |
| Data Storage Controller | Industrial Microprocessor Systems |
Use Scenario: Supervising +5.0 V (motor drive), +3.0 V (SATA controller), +2.5 V (buffer memory), and +1.23 V (reference) in RAID controller cards. IC Role / Device Role / Timing Role: Fault-detection hub asserting reset to ARM-based controller and disabling motor drivers upon rail collapse. Use Value: Avoids data corruption during unexpected power loss by halting write operations before voltage drops below NAND/DRAM retention thresholds. |
Use Scenario: Ensuring clean boot in programmable logic controllers with mixed 5 V, 3.3 V, 2.5 V, and 1.2 V FPGA I/O banks. IC Role / Device Role / Timing Role: System-level reset generator synchronized to all supply domains, interfacing directly with ARM Cortex-M reset pin. Use Value: Guarantees deterministic state recovery after brown-out, eliminating metastability in real-time control loops. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6339EUT+T | Same 4-input architecture but with ±2.5% threshold accuracy and 160 ms min reset timeout; uses external capacitor for timeout adjustment. | Requires external timing component and offers tighter threshold spec; less suitable for space-constrained designs needing fixed 200 ms timeout. | Select MAX6339EUT+T only if higher threshold precision and adjustable timeout outweigh added BOM complexity and footprint. |
| TPS3808G33DBVR | Single-supply supervisor (3.3 V only); lacks quad-monitoring capability; offers 200 ms fixed timeout and 3.5 µA quiescent current. | Cannot replace ADM6339FARJZ-RL7 in multi-rail systems without adding three additional supervisors and associated routing. | Use TPS3808G33DBVR only for single-rail applications where ultra-low power dominates over integration density. |
Compared with MAX6339EUT+T and TPS3808G33DBVR, the ADM6339FARJZ-RL7 uniquely delivers factory-trimmed quad-rail monitoring in a single SOT-23-6 package with guaranteed 200 ms timeout and 1 V minimum supply validity - making it optimal for compact, high-integration embedded systems requiring no external components.
Availability
ADM6339FARJZ-RL7 is available at Aetrix Electronics and suitable for telecom infrastructure, server board management, and industrial microprocessor systems requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ADM6339FARJZ-RL7 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 ADM6339 family was engineered specifically for reliable, low-power, multi-rail voltage supervision in space-constrained computing and networking platforms - emphasizing factory accuracy, glitch immunity, and seamless integration into existing reset architectures.
FAQ
What is the exact threshold configuration for ADM6339FARJZ-RL7?
The ADM6339FARJZ-RL7 monitors IN1 at +5.0 V (−5% tolerance), IN2 at +3.0 V (−5% tolerance), IN3 at +2.5 V (−5% tolerance), and IN4 at adjustable +1.23 V (±0.8% tolerance). This configuration is fixed per the Ordering Guide and cannot be altered post-manufacture. All thresholds are factory-trimmed and specified over −40°C to +85°C.
Does ADM6339FARJZ-RL7 require external components to operate?
No, ADM6339FARJZ-RL7 operates autonomously with no external resistors or capacitors required for basic supervision. The 200 ms reset timeout is internal and fixed; the +1.23 V adjustable input on IN4 only needs an external resistor divider if monitoring a voltage other than 1.23 V - otherwise, direct connection suffices.
Can ADM6339FARJZ-RL7 monitor negative voltages?
No, ADM6339FARJZ-RL7 is configured for +5.0 V, +3.0 V, +2.5 V, and +1.23 V positive-rail monitoring only. Negative voltage supervision (e.g., −5.0 V or −0.5 V) is supported in other variants like ADM6339MARJZ-RL7 or ADM6339QARJZ-RL7, but not in the FARJZ-RL7 variant per the Ordering Guide.
What is the minimum valid supply voltage for ADM6339FARJZ-RL7 RESET output?
The RESET output of ADM6339FARJZ-RL7 remains functionally valid as long as either IN1 ≥ 1 V or IN2 ≥ 1 V. This allows reliable reset assertion during brown-out conditions where one rail collapses before others, ensuring system safety even before full power stabilization.
Is ADM6339FARJZ-RL7 RoHS compliant and lead-free?
Yes, ADM6339FARJZ-RL7 is RoHS compliant (denoted by the "Z" suffix per Analog Devices' Ordering Guide) and lead-free. It meets EU Directive 2011/65/EU and is qualified for use in environmentally regulated commercial and industrial applications.
ADM6339FARJZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 4
- Voltage - Threshold:
- 2.19V, 2.78V, 4.63V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
ADM6339FARJZ-RL7 FAQ
1.How can I place an order for ADM6339FARJZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6339FARJZ-RL7 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 ADM6339FARJZ-RL7 reliable?
The price and inventory of ADM6339FARJZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6339FARJZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADM6339FARJZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6339FARJZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6339FARJZ-RL7?
ADM6339FARJZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6339FARJZ-RL7 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 ADM6339FARJZ-RL7?
For technical support, including ADM6339FARJZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6339FARJZ-RL7 requirements.
6.How does Aetrix verify that ADM6339FARJZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADM6339FARJZ-RL7 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 ADM6339FARJZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADM6339FARJZ-RL7?
All ADM6339FARJZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6339FARJZ-RL7, 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 ADM6339FARJZ-RL7 part is unused and in its original packaging.
Return procedure for ADM6339FARJZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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