Analog Devices Inc. ADM6306D329ARJZ-R7

Overview

ADM6306D329ARJZ-R7 from Analog Devices is a dual-supply supervisory IC with factory-trimmed VCC reset threshold of 2.93 V (±2.5% over −40°C to +125°C), adjustable RST IN threshold of 1.23 V, 140 ms minimum reset timeout, active-low open-drain RESET output, and manual reset (MR) input - used for reliable power-on and brownout reset in microprocessor systems.

For engineers reviewing the ADM6306D329ARJZ-R7 datasheet, ADM6306D329ARJZ-R7 pinout, ADM6306D329ARJZ-R7 application, or ADM6306D329ARJZ-R7 equivalent, key selection criteria include VCC threshold accuracy at temperature extremes, MR input timing compatibility, reset timeout stability across voltage transients, and SOT-23 footprint constraints in space-constrained embedded designs.

Technical Context

The ADM6306D329ARJZ-R7 integrates a precision internal voltage divider for VCC monitoring at 2.93 V nominal, paired with a high-impedance (±25 nA) 1.23 V adjustable comparator on RST IN. Its glitch-rejecting MR input features 63.5 kΩ internal pull-up and 1.5 µs minimum pulse width requirement.

Reset assertion occurs when either VCC falls below 2.93 V × (1 − 2.5%) = 2.857 V or RST IN drops below 1.23 V (−2.5% to +2.5% over full temperature range), with RESET remaining valid down to VCC = 0.9 V. The 140 ms timeout (min) is guaranteed over −40°C to +125°C with ±40% variation.

Key Specifications

Pinout & Package

ADM6306D329ARJZ-R7 is housed in a RoHS-compliant 5-lead SOT-23 (RJ-5) package, 2.90 mm × 1.60 mm × 1.15 mm, with JEDEC MO-178-AA compliance and C2 pin 1 orientation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar supervisory IC applications.

Compared with MAX6326–UR31T and TPS3808G33DBVR, ADM6306D329ARJZ-R7 uniquely combines factory-trimmed VCC supervision, adjustable secondary rail monitoring, and integrated manual reset in a single 5-pin SOT-23 - enabling compact, dual-rail reset assurance without external components or layout changes.

Availability

ADM6306D329ARJZ-R7 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, medical portable monitors, and smart energy meters requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for ADM6306D329ARJZ-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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, serving industrial, automotive, communications, and healthcare markets.

The ADM6306 series belongs to Analog Devices' precision voltage supervisor product line, designed specifically for robust, low-power, multi-rail reset generation in harsh-environment embedded systems where reliability and temperature stability are critical.

FAQ

What is the exact VCC reset threshold voltage for ADM6306D329ARJZ-R7?

The ADM6306D329ARJZ-R7 has a factory-trimmed VCC reset threshold of 2.93 V, with guaranteed tolerance of ±2.5% over the full operating temperature range (−40°C to +125°C). This corresponds to a minimum trip point of 2.857 V and maximum of 3.003 V at temperature extremes, as specified in Table 6 of the Rev. C datasheet.

Does ADM6306D329ARJZ-R7 support monitoring of two independent supply rails?

Yes - ADM6306D329ARJZ-R7 monitors VCC directly at its factory-set 2.93 V threshold and supports secondary rail monitoring via the RST IN pin, which has a fixed 1.23 V threshold. An external resistor divider on RST IN allows scaling to monitor voltages above 1.23 V, enabling true dual-rail supervision in a single 5-pin device.

What is the minimum pulse width required on the MR pin of ADM6306D329ARJZ-R7?

The MR input of ADM6306D329ARJZ-R7 requires a minimum low pulse width of 1.5 µs over the full temperature range (−40°C to +125°C). This specification ensures reliable manual reset triggering while rejecting shorter noise spikes, and is supported by on-chip debounce circuitry and 0.1 µs glitch rejection capability.

Can ADM6306D329ARJZ-R7 operate with VCC below 2.5 V?

Yes - ADM6306D329ARJZ-R7 guarantees valid RESET output operation down to VCC = 0.9 V, and remains functional across VCC = 0.9 V to 5.5 V. However, the VCC monitor itself activates only when VCC exceeds (2.93 V + 2.5%) ≈ 3.00 V per datasheet operating conditions; below that, only RST IN and MR inputs remain active.

What package type and marking code does ADM6306D329ARJZ-R7 use?

ADM6306D329ARJZ-R7 uses a 5-lead SOT-23 package (JEDEC MO-178-AA compliant, package option RJ-5) with RoHS-compliant finish. Its top-side marking code is "LLY", as confirmed in the Ordering Guide on page 11 of the Rev. C datasheet, and it ships in 7-inch tape-and-reel format (3,000 units per reel).