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Analog Devices Inc. ADM6339EARJZ-RL7
- Part No.:
- ADM6339EARJZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
ADM6339EARJZ-RL7.pdf
- Description:
- IC SUPERVISOR 4 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ADM6339EARJZ-RL7 from Analog Devices is a quad-voltage microprocessor supervisory circuit designed to monitor +5.0 V, +3.0 V, +2.5 V, and an adjustable +1.23 V supply with ±10% threshold tolerance. It delivers active-low open-drain RESET output with 200 ms typical timeout, operates from −40°C to +85°C, consumes 55 μA quiescent current, and uses IN2 as its internal power supply. It is deployed in server power sequencing and telecom baseband subsystems requiring precise multi-rail fault detection.
For engineers reviewing the ADM6339EARJZ-RL7 datasheet, ADM6339EARJZ-RL7 pinout, ADM6339EARJZ-RL7 application, or ADM6339EARJZ-RL7 equivalent, key selection criteria include verified four-input monitoring capability, SOT-23-6 package compatibility, guaranteed RESET validity down to IN1/IN2 = 1 V, and factory-trimmed thresholds without external resistor networks for nominal rails.
Technical Context
The ADM6339EARJZ-RL7 integrates four independent voltage comparators with built-in hysteresis (0.3% VTH) and a shared 200 ms reset timeout timer. Its internal architecture powers the circuit from IN2, enabling RESET assertion when any monitored input falls below its specified threshold (or rises above for negative options-though not applicable here).
All four inputs are independently configurable per ordering option: IN1 = +5.0 V (−10%), IN2 = +3.0 V (−10%), IN3 = +2.5 V (−10%), and IN4 = adjustable +1.23 V (±2.0%). The device guarantees RESET low-state validity as long as IN1 ≥ 1 V or IN2 ≥ 1 V, and supports glitch immunity via internal filtering without requiring external capacitors on IN1–IN3.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Monitored Voltages | +5.0 V, +3.0 V, +2.5 V, and adjustable +1.23 V - enables simultaneous validation of core, I/O, analog, and reference rails |
| Threshold Tolerance | ±10% for fixed rails - ensures reliable reset assertion across temperature and process variation without calibration |
| Reset Timeout | 200 ms typical - provides sufficient hold time for processor initialization and peripheral stabilization |
| Supply Input | IN2 powers the IC - eliminates need for separate VCC; allows direct tie to monitored +3.0 V rail |
| Quiescent Current | 55 μA - minimizes impact on system standby power budget |
| Operating Temperature | −40°C to +85°C - qualified for industrial and telecom infrastructure environments |
| RESET Output Type | Open-drain with 10 μA internal pull-up to IN2 - simplifies interface to diverse logic families without external resistors |
Pinout & Package
ADM6339EARJZ-RL7 is housed in a JEDEC-compliant 6-lead SOT-23 (RJ-6) package, measuring 2.90 mm × 1.60 mm × 1.15 mm, with gull-wing leads and RoHS-compliant finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN1) | Monitored Input Voltage 1 | Fixed +5.0 V (−10%) threshold input; must be connected to 5 V rail or tied high if unused |
| 2 (IN2) | Monitored Input Voltage 2 / Device Power Supply | Supplies internal circuitry; also monitored at +3.0 V (−10%); must be used for operation |
| 3 (IN3) | Monitored Input Voltage 3 | Fixed +2.5 V (−10%) threshold input; connects to core logic or analog supply |
| 4 (IN4) | Monitored Input Voltage 4 | Adjustable +1.23 V (±2.0%) threshold input; used for reference or low-voltage auxiliary rail |
| 5 (GND) | Ground Reference | Common return path for all comparators and RESET driver; requires low-impedance PCB connection |
| 6 (RESET) | Active-Low Open-Drain Reset Output | Asserts low during fault; remains low for 200 ms after recovery; pulled up internally to IN2 |
Key Features
| Feature | Design Value |
|---|---|
| Four independent voltage monitors | Simultaneously validates +5.0 V, +3.0 V, +2.5 V, and +1.23 V rails without external components |
| Factory-trimmed thresholds | Eliminates need for precision external resistors or calibration; reduces BOM count and layout area |
| Glitch-immune comparators | 0.3% internal hysteresis prevents false resets from sub-100 ns transients on monitored supplies |
| Single-supply operation from IN2 | Removes dependency on dedicated VCC; simplifies power domain management in multi-rail systems |
| RESET valid down to 1 V supply | Ensures deterministic reset behavior during brown-out conditions where IN1 or IN2 drops to 1 V |
Applications
| Telecom Baseband Processing | Server Power Sequencing |
|---|---|
Use Scenario: Monitoring FPGA, DSP, and memory supply rails in 4G/LTE baseband units under variable thermal load. IC Role / Device Role / Timing Role: Quad-supply supervisor ensuring synchronized reset assertion across +5.0 V (power amp bias), +3.0 V (FPGA I/O), +2.5 V (memory), and +1.23 V (PLL reference). Use Value: Prevents partial initialization by holding RESET until all rails stabilize within ±10% tolerance, eliminating boot failures caused by out-of-spec voltage sequencing. |
Use Scenario: Validating primary and auxiliary rails in dual-CPU server motherboards during cold start and hot-swap events. IC Role / Device Role / Timing Role: Supervisory circuit asserting RESET if +5.0 V (backplane), +3.0 V (chipset), +2.5 V (DIMM termination), or +1.23 V (clock generator reference) deviates. Use Value: Guarantees 200 ms minimum reset pulse width even during rapid rail collapse, satisfying Intel VRD and AMD SVI2 timing requirements. |
| Data Storage Controller | Industrial PLC CPU Module |
Use Scenario: Ensuring clean boot of SAS/SATA controller ASICs in enterprise SSD enclosures exposed to wide ambient temperature swings. IC Role / Device Role / Timing Role: Monitoring +5.0 V (motor drive), +3.0 V (controller core), +2.5 V (buffer memory), and +1.23 V (temperature sensor reference). Use Value: 55 μA quiescent current extends battery-backed operation during safe shutdown; −40°C to +85°C rating supports extended storage shelf life testing. |
Use Scenario: Securing deterministic startup of ARM-based PLC CPUs in factory automation cabinets with noisy 24 V DC input. IC Role / Device Role / Timing Role: Detecting undervoltage on isolated +5.0 V (I/O expander), +3.0 V (CPU core), +2.5 V (ADC reference), and +1.23 V (RTC backup). Use Value: Open-drain RESET output interfaces directly to 3.3 V or 5 V logic without level shifters; internal 10 μA pull-up avoids external component placement near noise-sensitive analog sections. |
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 ±5% threshold tolerance and 140 ms min reset timeout; uses external capacitor for timeout adjustment | Requires external timing capacitor; tighter threshold spec suits high-precision ADC reference monitoring | Select when ±5% accuracy is mandatory and board space allows for 0603 capacitor placement |
| TPS3808G33DBVR | Single-input supervisor with adjustable threshold (0.405–5.8 V); no native quad-monitoring; 200 ms fixed timeout; 2.5 μA IQ | Cannot replace ADM6339EARJZ-RL7 without four discrete devices; ultra-low IQ targets battery-powered edge nodes | Use only in new designs where rail count is reduced or where power budget <10 μA dominates over integration needs |
Compared with MAX6339EUT+T and TPS3808G33DBVR, the ADM6339EARJZ-RL7 uniquely delivers factory-configured quad monitoring in one SOT-23-6 package with no external components required for timing or threshold setting-reducing design risk, PCB area, and qualification effort for multi-rail embedded systems.
Availability
ADM6339EARJZ-RL7 is available at Aetrix Electronics and suitable for telecom infrastructure, server power management, and industrial control systems requiring stable component supply, long-term lifecycle support, and guaranteed RoHS compliance.
Supply support for ADM6339EARJZ-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 compact, low-power microprocessor supervision in space-constrained multi-rail systems-emphasizing integration, accuracy, and robustness over wide temperature ranges without external passive components.
FAQ
What is the exact threshold configuration for ADM6339EARJZ-RL7?
The ADM6339EARJZ-RL7 is factory configured to monitor +5.0 V (−10% tolerance), +3.0 V (−10%), +2.5 V (−10%), and an adjustable +1.23 V (±2.0%) input. This configuration is fixed per the Ordering Guide and cannot be altered post-manufacture. Each threshold is internally trimmed and tested across temperature, eliminating need for external resistor dividers on the first three inputs.
Can ADM6339EARJZ-RL7 monitor negative voltages?
No, ADM6339EARJZ-RL7 does not support negative voltage monitoring. Its IN4 input is configured for +1.23 V adjustable threshold only. Negative monitoring variants (e.g., ADM6339MARJZ-RL7) use −5.0 V or −0.5 V options on IN4, which are not present in the EARJZ-RL7 variant. Connecting negative voltage to any input risks violating absolute maximum ratings and may damage the device.
What is the role of IN2 in ADM6339EARJZ-RL7 operation?
In ADM6339EARJZ-RL7, IN2 serves a dual role: it is both the monitored +3.0 V supply and the internal power source for the entire IC. The device draws 55 μA from IN2, and the internal pull-up on the RESET pin connects to IN2. Operation is invalid if IN2 is unpowered or below 1.0 V, as RESET validity depends on IN2 ≥ 1 V or IN1 ≥ 1 V.
Does ADM6339EARJZ-RL7 require external components for basic operation?
No, ADM6339EARJZ-RL7 requires no external components for core supervision functionality. Its four thresholds are factory-trimmed, the 200 ms reset timeout is internal, and the RESET output includes a 10 μA internal pull-up to IN2. A 0.1 μF bypass capacitor on IN2-to-GND is recommended for noise immunity but not mandatory for specification compliance.
How does the RESET output behave during power-up of ADM6339EARJZ-RL7?
Upon initial power application, ADM6339EARJZ-RL7 asserts RESET low until all four monitored inputs exceed their respective thresholds. After that, RESET remains low for the full 200 ms timeout period before going high (open-drain, pulled up by internal 10 μA current to IN2). This ensures the host microprocessor receives a clean, timed reset pulse regardless of individual rail ramp rates.
ADM6339EARJZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 4
- Voltage - Threshold:
- 2.19V, 2.63V, 4.38V, Adj
- Output:
- Open Drain or Open Collector
- Reset:
- Active Low
- Reset Timeout:
- 140ms Minimum
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
ADM6339EARJZ-RL7 FAQ
1.How can I place an order for ADM6339EARJZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6339EARJZ-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 ADM6339EARJZ-RL7 reliable?
The price and inventory of ADM6339EARJZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6339EARJZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADM6339EARJZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6339EARJZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6339EARJZ-RL7?
ADM6339EARJZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6339EARJZ-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 ADM6339EARJZ-RL7?
For technical support, including ADM6339EARJZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6339EARJZ-RL7 requirements.
6.How does Aetrix verify that ADM6339EARJZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADM6339EARJZ-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 ADM6339EARJZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADM6339EARJZ-RL7?
All ADM6339EARJZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6339EARJZ-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 ADM6339EARJZ-RL7 part is unused and in its original packaging.
Return procedure for ADM6339EARJZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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