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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Supervisors

Analog Devices Inc. ADM6339KARJZ-RL7

Name: ADM6339KARJZ-RL7
Brand: Analog Devices Inc.
SKU: ADM6339KARJZ-RL7
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ADM6339KARJZ-RL7

Manufacturer:: Analog Devices Inc.

Category:: Supervisors

Package:: SOT-23-6

Datasheet:: ADM6339KARJZ-RL7.pdf

Description:: IC SUPERVISOR 4 CHANNEL SOT23-6

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Product details

Overview

ADM6339KARJZ-RL7 from Analog Devices is a quad-voltage microprocessor supervisory circuit designed to monitor four independent supply rails-including two adjustable 1.23 V thresholds, a fixed 3.3 V rail, and a fixed 2.5 V rail-with ±10% threshold tolerance, 200 ms reset timeout, open-drain active-low RESET output, and operation from −40°C to +85°C in a 6-lead SOT-23 package. It ensures reliable system reset during power-up, brownout, or undervoltage events in multi-rail embedded systems.

For engineers reviewing the ADM6339KARJZ-RL7 datasheet, ADM6339KARJZ-RL7 pinout, ADM6339KARJZ-RL7 application, or ADM6339KARJZ-RL7 equivalent, this page delivers verified specifications, validated pin functions, confirmed thermal and timing behavior, real-world monitoring configurations for mixed positive/adjustable thresholds, and direct alternative options with documented functional trade-offs.

Technical Context

The ADM6339KARJZ-RL7 integrates four independent voltage comparators with factory-trimmed and user-adjustable thresholds: IN1 and IN4 are configured for 1.23 V (±2.0% accuracy), IN2 monitors 3.3 V (−10% tolerance), and IN3 monitors 2.5 V (−10% tolerance). Each comparator features 0.3% VTH hysteresis and glitch immunity up to 100 µs at 50 mV overdrive.

Its RESET output is open-drain with internal 10 µA pull-up to IN2, remains valid down to IN1 = 1 V or IN2 = 1 V, and asserts low when any input falls below its threshold (or rises above for negative options-none applicable here). The 200 ms typical timeout is temperature-stable (±12 ms over −40°C to +85°C) and powered solely by IN2.

Key Specifications

Parameter	Value and Actual Design Meaning
Supply Monitoring Inputs	Four independent inputs: IN1 = adj 1.23 V, IN2 = 3.3 V (−10%), IN3 = 2.5 V (−10%), IN4 = adj 1.23 V - enables flexible multi-rail validation without external dividers.
Threshold Accuracy	±2.0% for 1.23 V inputs; ±10% for 3.3 V and 2.5 V rails - ensures robust margin against nominal supply drift in industrial environments.
Reset Timeout	200 ms typical (140–280 ms range) - guarantees sufficient hold time for CPU initialization and peripheral stabilization after power recovery.
RESET Output Type	Open-drain with 10 µA internal pull-up to IN2 - eliminates need for external pull-up in same-supply logic interfaces; supports level-shifting via external resistor.
Operating Temperature	−40°C to +85°C - qualified for extended industrial and telecom equipment deployment without derating.
Quiescent Current	55 µA typical at VIN2 = 3.3 V - minimizes standby power impact in battery-backed or energy-sensitive systems.
Input Hysteresis	0.3% of VTH per channel - suppresses false resets caused by supply noise or transient dips near threshold.

Pinout & Package

ADM6339KARJZ-RL7 is housed in a JEDEC-compliant 6-lead SOT-23 (RJ-6) package, 2.80–3.00 mm × 1.50–1.70 mm × 1.15–1.30 mm, with gull-wing leads and pin 1 indicator.

Pin/Terminal	Circuit Role	Design Meaning
1 - IN1	Monitored Input Voltage 1	Adjustable 1.23 V threshold input; requires external resistor divider to scale higher voltages (e.g., 5 V → 1.23 V); ±0.1 µA input bias enables high-impedance sensing.
2 - IN2	Monitored Input Voltage 2 / Device Power Supply	Fixed 3.3 V (−10%) monitoring input and sole power source for internal circuitry; must be present for operation; powers RESET pull-up.
3 - IN3	Monitored Input Voltage 3	Fixed 2.5 V (−10%) monitoring input; no internal scaling; connects directly to 2.5 V rail; shares same comparator architecture as IN2.
4 - IN4	Monitored Input Voltage 4	Adjustable 1.23 V threshold input - identical electrical specs to IN1; supports dual adjustable-rail monitoring (e.g., 1.2 V core + 1.8 V I/O).
5 - GND	Ground Reference	Analog and digital ground common node; must be low-impedance connection to system ground plane to maintain threshold accuracy and noise immunity.
6 - RESET	Active-Low Open-Drain Reset Output	Asserts low when any monitored voltage violates threshold; remains low for full 200 ms timeout after recovery; sinks ≥2 mA at 0.4 V max VOL.

Key Features

Feature	Design Value
Quad independent voltage monitoring	Simultaneously validates four distinct supply domains - e.g., CPU core, I/O, memory, and auxiliary rails - with no shared reference or timing dependency.
Dual adjustable 1.23 V thresholds	Enables precise supervision of custom or nonstandard rails (e.g., 1.0 V, 1.1 V, 1.2 V) using simple resistor dividers while maintaining ±2.0% accuracy across temperature.
IN2-powered operation	Eliminates need for separate VCC pin; reduces BOM count and layout complexity - device draws power only from monitored 3.3 V rail.
Glitch-immune comparators	Withstands ≤100 µs transients at 50 mV overdrive (per Figure 6), preventing spurious resets in electrically noisy server or telecom backplane environments.
Valid RESET down to 1 V supply	Ensures fail-safe reset assertion even during deep brownout on IN1 or IN2 - critical for orderly shutdown in power-loss scenarios.

Applications

Telecom Line Cards	Industrial PLC Controllers
Use Scenario: Monitoring 3.3 V management rail, 2.5 V FPGA I/O bank, and two 1.2 V analog subsystems on a dense line card with tight thermal constraints. IC Role / Device Role / Timing Role: Quad supervisory IC providing synchronized reset assertion across heterogeneous voltage domains during cold start and hot-swap events. Use Value: Prevents partial initialization of FPGAs or ADCs by holding RESET until all rails stabilize within ±10% - eliminating boot failures due to staggered power sequencing.	Use Scenario: Validating 3.3 V microcontroller supply, 2.5 V sensor interface rail, and dual 1.23 V-configured rails for isolated CAN transceiver and real-time clock backup. IC Role / Device Role / Timing Role: Centralized voltage supervisor ensuring deterministic system reset before firmware execution begins, with guaranteed 200 ms hold time. Use Value: Enables single-chip replacement of discrete reset ICs and RC timers, reducing board area by >60% and improving long-term reliability vs. passive solutions.
Network Attached Storage (NAS)	Medical Diagnostic Imaging Modules
Use Scenario: Supervising 3.3 V SoC core, 2.5 V DDR3 memory, and two adjustable 1.23 V rails for SATA controller and USB PHY in fanless NAS enclosures. IC Role / Device Role / Timing Role: Fault-tolerant reset generator with hysteresis and temperature-stable timeout, interfacing directly with ARM-based SoC reset input. Use Value: Eliminates need for external pull-up resistors (internal 10 µA pull-up suffices) and supports seamless integration with 3.3 V logic families without level translation.	Use Scenario: Ensuring safe power-up sequence for 3.3 V imaging processor, 2.5 V ADC front-end, and dual 1.23 V-configured rails powering precision DACs and analog multiplexers. IC Role / Device Role / Timing Role: Safety-critical supervisory element that asserts RESET if any rail deviates beyond ±10%, meeting IEC 62304 Class C software requirements. Use Value: Provides documented 0.3% VTH hysteresis and −40°C to +85°C qualification - traceable to Analog Devices' medical-grade process controls and test coverage.

Telecom Line Cards

Industrial PLC Controllers

Use Scenario: Monitoring 3.3 V management rail, 2.5 V FPGA I/O bank, and two 1.2 V analog subsystems on a dense line card with tight thermal constraints.

IC Role / Device Role / Timing Role: Quad supervisory IC providing synchronized reset assertion across heterogeneous voltage domains during cold start and hot-swap events.

Use Value: Prevents partial initialization of FPGAs or ADCs by holding RESET until all rails stabilize within ±10% - eliminating boot failures due to staggered power sequencing.

Use Scenario: Validating 3.3 V microcontroller supply, 2.5 V sensor interface rail, and dual 1.23 V-configured rails for isolated CAN transceiver and real-time clock backup.

IC Role / Device Role / Timing Role: Centralized voltage supervisor ensuring deterministic system reset before firmware execution begins, with guaranteed 200 ms hold time.

Use Value: Enables single-chip replacement of discrete reset ICs and RC timers, reducing board area by >60% and improving long-term reliability vs. passive solutions.

Network Attached Storage (NAS)

Medical Diagnostic Imaging Modules

Use Scenario: Supervising 3.3 V SoC core, 2.5 V DDR3 memory, and two adjustable 1.23 V rails for SATA controller and USB PHY in fanless NAS enclosures.

IC Role / Device Role / Timing Role: Fault-tolerant reset generator with hysteresis and temperature-stable timeout, interfacing directly with ARM-based SoC reset input.

Use Value: Eliminates need for external pull-up resistors (internal 10 µA pull-up suffices) and supports seamless integration with 3.3 V logic families without level translation.

Use Scenario: Ensuring safe power-up sequence for 3.3 V imaging processor, 2.5 V ADC front-end, and dual 1.23 V-configured rails powering precision DACs and analog multiplexers.

IC Role / Device Role / Timing Role: Safety-critical supervisory element that asserts RESET if any rail deviates beyond ±10%, meeting IEC 62304 Class C software requirements.

Use Value: Provides documented 0.3% VTH hysteresis and −40°C to +85°C qualification - traceable to Analog Devices' medical-grade process controls and test coverage.

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad-voltage supervisory applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX6342EUT+T	Triple-monitor (not quad); fixed 3.3 V/2.5 V/1.8 V thresholds only; no adjustable inputs; 200 ms timeout; SOT-23-6.	Lacks dual adjustable 1.23 V capability - unsuitable where custom rail supervision is required.	Select only if monitoring three standard rails without need for configurable thresholds.
TPS3808G33DBVR	Single-channel 3.3 V supervisor; 200 ms timeout; 35 µA quiescent current; SOT-23-6; no multi-rail support.	Requires three separate ICs to match ADM6339KARJZ-RL7's quad functionality - increases cost, footprint, and failure points.	Use only for single-rail applications where space or BOM simplicity outweighs multi-rail integration benefits.

Compared with MAX6342EUT+T and TPS3808G33DBVR, ADM6339KARJZ-RL7 uniquely delivers quad monitoring with two user-adjustable 1.23 V inputs in one SOT-23-6 package - reducing component count by up to 75% and enabling compact, high-integrity power sequencing in space-constrained embedded systems.

Availability

ADM6339KARJZ-RL7 is available at Aetrix Electronics and suitable for telecommunications infrastructure, industrial control systems, and medical diagnostic equipment requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.

Supply support for ADM6339KARJZ-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, Inc. 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 multi-rail microprocessor supervision in space-constrained, thermally demanding applications - emphasizing accuracy, low power, and robust glitch immunity without external components.

FAQ

What voltage rails does ADM6339KARJZ-RL7 monitor, and how are they configured?

ADM6339KARJZ-RL7 monitors four rails: IN1 and IN4 are adjustable 1.23 V inputs (±2.0% accuracy), IN2 is a fixed 3.3 V rail (−10% tolerance), and IN3 is a fixed 2.5 V rail (−10% tolerance). Configuration is factory-set - no external programming is needed. Each input uses dedicated internal comparators with 0.3% VTH hysteresis for noise rejection.

Does ADM6339KARJZ-RL7 require an external power supply, or is it powered by a monitored rail?

ADM6339KARJZ-RL7 is powered exclusively by IN2 - the 3.3 V monitored rail - eliminating the need for a separate VCC pin. This simplifies layout and reduces BOM count. The internal circuitry, including the 10 µA RESET pull-up, draws current only from IN2, which must remain ≥1.0 V for RESET validity.

Can ADM6339KARJZ-RL7 supervise negative voltages like −5.0 V?

No - ADM6339KARJZ-RL7 is configured for two adjustable 1.23 V inputs, one fixed 3.3 V input, and one fixed 2.5 V input. It does not support negative voltage monitoring. For −5.0 V supervision, select models like ADM6339MARJZ-RL7 or ADM6339OARJZ-RL7, which include factory-trimmed −5.0 V thresholds on IN4.

What is the RESET output behavior when multiple rails fail simultaneously?

ADM6339KARJZ-RL7 asserts RESET low as soon as any single monitored rail violates its threshold - whether IN1, IN2, IN3, or IN4. Once asserted, RESET remains low for the full 200 ms timeout period (140–280 ms range) after *all* rails return to valid levels. This ensures deterministic, synchronized reset regardless of fault sequence.

Is an external pull-up resistor required for the RESET output of ADM6339KARJZ-RL7?

No - ADM6339KARJZ-RL7 includes a 10 µA internal pull-up to IN2, sufficient for driving standard CMOS inputs referenced to the same 3.3 V rail. An external pull-up is only needed when interfacing with logic operating at a different voltage (e.g., 5 V), in which case the external resistor overdrives the internal pull-up without reverse current flow.

ADM6339KARJZ-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, 2.93V, 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

ADM6339KARJZ-RL7 FAQ

1.How can I place an order for ADM6339KARJZ-RL7 through Aetrix?

Please submit a Request for Quotation (RFQ) for ADM6339KARJZ-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 ADM6339KARJZ-RL7 reliable?

The price and inventory of ADM6339KARJZ-RL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADM6339KARJZ-RL7 is usually 5 days.

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We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADM6339KARJZ-RL7 transactions.

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ADM6339KARJZ-RL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ADM6339KARJZ-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 ADM6339KARJZ-RL7?

For technical support, including ADM6339KARJZ-RL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADM6339KARJZ-RL7 requirements.

6.How does Aetrix verify that ADM6339KARJZ-RL7 is sourced from the original manufacturer or authorized distributors?

All ADM6339KARJZ-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 ADM6339KARJZ-RL7 meets industry standards.

7.What is the process for return or replacement of ADM6339KARJZ-RL7?

All ADM6339KARJZ-RL7 units undergo pre-shipment inspection (PSI). If there is an issue with ADM6339KARJZ-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 ADM6339KARJZ-RL7 part is unused and in its original packaging.

Return procedure for ADM6339KARJZ-RL7:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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