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Analog Devices Inc. ADM6339LARJZ-RL7
- Part No.:
- ADM6339LARJZ-RL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Supervisors
- Package:
- SOT-23-6
- Datasheet:
-
ADM6339LARJZ-RL7.pdf
- Description:
- IC SUPERVISOR 4 CHANNEL SOT23-6
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ADM6339LARJZ-RL7 from Analog Devices is a quad-voltage microprocessor supervisory circuit with factory-configured adjustable thresholds on IN1 and IN4 (+1.23 V), fixed +3.3 V on IN2, fixed +2.5 V on IN3, ±5% threshold tolerance, 200 ms reset timeout, and open-drain active-low RESET output. It monitors power rails in embedded microprocessor systems requiring reliable reset assertion during undervoltage events.
For engineers reviewing the ADM6339LARJZ-RL7 datasheet, ADM6339LARJZ-RL7 pinout, ADM6339LARJZ-RL7 application, or ADM6339LARJZ-RL7 equivalent, key selection criteria include input threshold configuration (IN1/IN4 = +1.23 V adjustable), operating temperature range (−40°C to +85°C), SOT-23-6 package compatibility, low quiescent current (55 μA), and guaranteed RESET validity down to IN1 or IN2 = 1 V.
Technical Context
The ADM6339LARJZ-RL7 implements four independent voltage comparators with internal reference trimming, each monitoring one of IN1–IN4 against preconfigured thresholds. IN2 serves as both monitored supply and device power source, enabling operation down to 1.0 V while maintaining RESET integrity.
Its reset logic asserts active-low RESET when any input falls below its threshold (or rises above for negative options), holds low for 200 ms typical after all inputs recover, and features 0.3% threshold hysteresis for glitch immunity. The open-drain RESET output includes a 10 μA internal pull-up to IN2, eliminating need for external pull-up in many logic interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Input | IN2 powers device and must be ≥1.0 V; RESET remains valid if IN1 or IN2 ≥1 V. |
| Threshold Configuration | IN1 = +1.23 V adjustable (±0.8% accuracy), IN2 = +3.3 V fixed (±5%), IN3 = +2.5 V fixed (±5%), IN4 = +1.23 V adjustable (±0.8%). |
| Reset Timeout | 200 ms typical delay after all inputs exceed thresholds; ensures stable system boot before release. |
| RESET Output Type | Open-drain with 10 μA internal pull-up to IN2; compatible with mixed-voltage logic without external resistor. |
| Quiescent Current | 55 μA typical at VIN2 = 3.0 V to 3.3 V; enables use in battery-backed or low-power embedded systems. |
| Operating Temperature | −40°C to +85°C; qualified for industrial-grade microprocessor supervision in servers and telecom equipment. |
| Input Hysteresis | 0.3% of threshold voltage; prevents false resets from brief supply transients or noise. |
Pinout & Package
ADM6339LARJZ-RL7 is housed in a 6-lead SOT-23 (RJ-6) package per JEDEC MO-178-AB, with 1.90 mm × 2.90 mm footprint and 1.30 mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN1) | Monitored Input Voltage 1 | Configured for +1.23 V adjustable threshold; requires external resistor divider to monitor higher voltages. |
| 2 (IN2) | Monitored Input Voltage 2 / Power Supply | Primary power source for ADM6339LARJZ-RL7; also monitored at +3.3 V; RESET validity depends on IN2 ≥1 V. |
| 3 (IN3) | Monitored Input Voltage 3 | Fixed +2.5 V threshold input; no external components required for nominal 2.5 V rail monitoring. |
| 4 (IN4) | Monitored Input Voltage 4 | Configured for +1.23 V adjustable threshold; identical interface and accuracy to IN1. |
| 5 (GND) | Ground Reference | Common return path for all internal circuits and comparator references; must be low-impedance. |
| 6 (RESET) | Active-Low Reset Output | Open-drain output asserted low during fault; internal 10 μA pull-up to IN2 eliminates need for external pull-up in most cases. |
Key Features
| Feature | Design Value |
|---|---|
| Quad independent voltage monitoring | Simultaneously supervises four distinct supply rails-enables compact BOM for multi-rail microprocessor systems. |
| Factory-trimmed ±5% threshold accuracy | Eliminates need for external calibration or trimming resistors on IN2 and IN3; reduces design validation time. |
| +1.23 V adjustable inputs on IN1 and IN4 | Supports monitoring of arbitrary positive supplies via simple resistor dividers; maintains ±0.8% accuracy across temperature. |
| 200 ms reset timeout with hysteresis | Ensures processor reset persists long enough for power stabilization and clock lock; 0.3% hysteresis rejects sub-100 µs glitches. |
| Low 55 μA quiescent current | Minimizes impact on standby power budget; suitable for always-on supervision in battery-buffered or energy-sensitive applications. |
Applications
| Telecom Base Station Power Management | Industrial PLC CPU Module |
|---|---|
Use Scenario: Monitoring +3.3 V I/O, +2.5 V core, and two auxiliary rails in a field-deployable base station controller. IC Role / Device Role / Timing Role: Quad-supply supervisor asserting system-wide RESET on any rail collapse; 200 ms timeout aligns with FPGA configuration timing. Use Value: Single-device replacement for discrete reset ICs reduces PCB area by >40% and eliminates inter-rail timing skew between reset signals. |
Use Scenario: Supervising isolated +3.3 V logic, +2.5 V MCU core, and two programmable analog supply rails in a modular PLC backplane. IC Role / Device Role / Timing Role: Voltage monitor with dual adjustable inputs (IN1/IN4) enabling flexible adaptation to customer-specific analog rail voltages. Use Value: Adjustable +1.23 V thresholds allow precise supervision of non-standard rails (e.g., +12 V analog via 10:1 divider) without redesigning the supervisor circuit. |
| Enterprise SSD Controller Board | Medical Imaging Data Acquisition Unit |
Use Scenario: Ensuring clean boot sequence for NVMe controller, DRAM interface, flash I/O, and PCIe PHY supplies in high-density SSD modules. IC Role / Device Role / Timing Role: Centralized reset generator with guaranteed RESET validity down to IN2 = 1 V-critical during brown-out recovery. Use Value: Internal 10 μA pull-up to IN2 avoids conflict with 1.8 V or 3.3 V host logic levels, simplifying level-shifting requirements. |
Use Scenario: Supervising +3.3 V digital, +2.5 V ADC reference, and two precision analog bias rails in real-time imaging front-end. IC Role / Device Role / Timing Role: High-accuracy supervisor with ±5% fixed thresholds and ±0.8% adjustable thresholds ensuring diagnostic subsystem reliability. Use Value: 0.3% hysteresis and 30 µs response time prevent spurious resets from EMI-induced rail perturbations during MRI pulse sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-voltage supervisory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX6342TUT+T | Triple-supply monitor (+3.3 V, +2.5 V, +1.8 V); no adjustable inputs; 140 ms reset timeout; 1.6 V min supply. | Lacks fourth input and adjustable thresholds; unsuitable where IN1/IN4 flexibility is required for custom rail monitoring. | Select only if exactly three fixed rails need supervision and space allows larger SOT-23-6 footprint with different pinout. |
| TPS3808G33DBVR | Dual-supply monitor (+3.3 V, adjustable); 200 ms timeout; 1.2 V min supply; 25 μA quiescent current. | Only two inputs; requires two devices to match ADM6339LARJZ-RL7's quad capability; no negative or dual-adjustable option support. | Choose when ultra-low power (<30 μA) is critical and system has ≤2 rails-otherwise increases component count and layout complexity. |
Compared with MAX6342TUT+T and TPS3808G33DBVR, ADM6339LARJZ-RL7 uniquely delivers four-input supervision with dual +1.23 V adjustable thresholds in a single SOT-23-6 package, enabling consolidation of multi-rail reset logic without sacrificing accuracy or temperature stability.
Availability
ADM6339LARJZ-RL7 is available at Aetrix Electronics and suitable for telecommunications infrastructure, industrial PLCs, and enterprise SSD controllers requiring stable component supply, RoHS-compliant packaging, and extended temperature operation.
Supply support for ADM6339LARJZ-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 semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control.
The ADM6339 family was designed specifically for robust, low-power microprocessor supervision in multi-rail embedded systems-emphasizing accuracy, glitch immunity, and minimal board space.
FAQ
What voltage thresholds are configured on ADM6339LARJZ-RL7?
The ADM6339LARJZ-RL7 is factory-configured with +1.23 V adjustable thresholds on IN1 and IN4, a +3.3 V fixed threshold on IN2 (±5% tolerance), and a +2.5 V fixed threshold on IN3 (±5% tolerance). These settings are defined in the Analog Devices Ordering Guide and cannot be altered post-manufacture.
Does ADM6339LARJZ-RL7 require an external pull-up resistor on the RESET pin?
No-ADM6339LARJZ-RL7 includes a 10 μA internal pull-up to IN2 on the open-drain RESET pin, making external pull-up resistors unnecessary in most applications interfacing with logic referenced to IN2 or lower voltages. An external pull-up is only needed when driving logic with a higher supply than IN2.
Can ADM6339LARJZ-RL7 monitor negative supply voltages?
No-ADM6339LARJZ-RL7 supports only positive adjustable thresholds (+1.23 V on IN1 and IN4) and fixed positive thresholds (+3.3 V, +2.5 V). It does not support −5.0 V, −0.5 V, or other negative input options; those are implemented in other variants like ADM6339QARJZ-RL7 or ADM6339MARJZ-RL7.
What is the minimum operating voltage for ADM6339LARJZ-RL7 to maintain valid RESET output?
ADM6339LARJZ-RL7 guarantees correct RESET state as long as either IN1 or IN2 remains ≥1.0 V. This allows reliable reset assertion during deep brown-out conditions where main supplies collapse but backup or auxiliary rails remain marginally active.
How does the 0.3% threshold hysteresis in ADM6339LARJZ-RL7 improve system reliability?
The 0.3% hysteresis on each comparator prevents oscillatory RESET toggling during slow or noisy supply recovery-ensuring that once a rail crosses its threshold, it must deviate further before triggering a new event. This eliminates false resets caused by ripple, EMI, or thermal drift near trip points in ADM6339LARJZ-RL7 applications.
ADM6339LARJZ-RL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Type:
- Multi-Voltage Supervisor
- Number of Voltages Monitored:
- 4
- Voltage - Threshold:
- 2.19V, 3.08V, Adj, 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
ADM6339LARJZ-RL7 FAQ
1.How can I place an order for ADM6339LARJZ-RL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for ADM6339LARJZ-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 ADM6339LARJZ-RL7 reliable?
The price and inventory of ADM6339LARJZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6339LARJZ-RL7 is usually 5 days.
3.What payment methods are accepted for ADM6339LARJZ-RL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6339LARJZ-RL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADM6339LARJZ-RL7?
ADM6339LARJZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADM6339LARJZ-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 ADM6339LARJZ-RL7?
For technical support, including ADM6339LARJZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6339LARJZ-RL7 requirements.
6.How does Aetrix verify that ADM6339LARJZ-RL7 is sourced from the original manufacturer or authorized distributors?
All ADM6339LARJZ-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 ADM6339LARJZ-RL7 meets industry standards.
7.What is the process for return or replacement of ADM6339LARJZ-RL7?
All ADM6339LARJZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6339LARJZ-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 ADM6339LARJZ-RL7 part is unused and in its original packaging.
Return procedure for ADM6339LARJZ-RL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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