Analog Devices Inc. ADM6315-45D1ARTRL7

Overview

ADM6315-45D1ARTRL7 from Analog Devices is a precision open-drain microprocessor supervisory circuit designed to monitor 4.5 V supply rails with ±2.5% threshold accuracy over −40°C to +85°C, assert reset for ≥1 ms after VCC rise or MR activation, and consume only 5 μA typical supply current - deployed in automotive safety systems and industrial controllers requiring reliable brownout detection.

For engineers reviewing the ADM6315-45D1ARTRL7 datasheet, ADM6315-45D1ARTRL7 pinout, ADM6315-45D1ARTRL7 application, or ADM6315-45D1ARTRL7 equivalent, key selection criteria include its 4.5 V trip point, 1 ms minimum reset timeout, SOT-143 package footprint, manual reset debouncing, and open-drain RESET output compatible with mixed-voltage system interfacing.

Technical Context

The ADM6315-45D1ARTRL7 integrates a precision voltage reference comparator with temperature-compensated threshold (±2.5% over −40°C to +85°C) and a monostable timer that guarantees ≥1 ms reset assertion after VCC exceeds 4.5 V or MR falls. Its internal glitch filter rejects <100 ns noise on MR, and the RESET output remains low until both VCC > 4.5 V and MR is high for >1 μs.

This device operates across 1 V to 5.5 V supply range, asserts reset within 35 μs during VCC fall at 1 mV/μs, and maintains functional reset assertion down to VCC = 1 V with 80 μA sink capability - enabling robust power sequencing in battery-backed and wide-input industrial systems.

Key Specifications

Pinout & Package

ADM6315-45D1ARTRL7 is housed in a 4-lead SOT-143 package (RA-4), measuring 2.9 mm × 1.6 mm × 1.15 mm, with gull-wing leads optimized for automated assembly and thermal dissipation (θJA = 330°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6315US45D2-T and TPS3808G33DBVR, the ADM6315-45D1ARTRL7 uniquely delivers 4.5 V precision monitoring with 1 ms timeout and integrated debounced MR in SOT-143 - making it optimal for automotive and industrial designs demanding tight voltage thresholds and rapid, noise-immune reset control.

Availability

ADM6315-45D1ARTRL7 is available at Aetrix Electronics and suitable for automotive safety systems, industrial PLC controllers, portable medical instruments, and smart energy meters requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.

Supply support for ADM6315-45D1ARTRL7 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 ADM6315 family was engineered specifically for microprocessor supervisory functions in harsh environments - delivering precision voltage monitoring, manual reset integration, and robust transient immunity in minimal-footprint packages.

FAQ

What is the exact reset threshold voltage of ADM6315-45D1ARTRL7?

The ADM6315-45D1ARTRL7 has a nominal reset threshold of 4.50 V, with tolerance of ±2.5% over the −40°C to +85°C temperature range and ±3.5% over −40°C to +125°C. This value is factory-trimmed and specified in Table 1 of the Rev. I datasheet under "RESET VOLTAGE THRESHOLD (VTH)". The part number suffix "-45" explicitly denotes the 4.5 V trip point.

Does ADM6315-45D1ARTRL7 support manual reset functionality?

Yes, ADM6315-45D1ARTRL7 includes a dedicated MR (Manual Reset) pin (Pin 3) that accepts active-low signals. It features built-in debounce rejecting transients <100 ns and guarantees recognition of pulses ≥1 μs. When MR is pulled low, RESET asserts regardless of VCC level - a critical feature for user-initiated recovery in locked-up systems.

What is the minimum VCC voltage at which ADM6315-45D1ARTRL7 can still assert RESET?

ADM6315-45D1ARTRL7 can assert RESET down to VCC = 1 V while sinking 80 μA, as confirmed in the "RESET OUTPUT" section of the datasheet. This capability enables reliable brownout detection during deep undervoltage events, such as battery depletion or power-fail transitions, where other supervisors may cease operation.

Is ADM6315-45D1ARTRL7 pin-compatible with any legacy supervisory ICs?

Yes, ADM6315-45D1ARTRL7 is pin-compatible with the ADM811 series per the datasheet's FEATURES section. Both share identical 4-lead SOT-143 pinout (GND, RESET, MR, VCC) and open-drain RESET output - allowing drop-in replacement in existing designs without PCB modification, provided the 4.5 V threshold and 1 ms timeout meet system requirements.

What package type and lead finish does ADM6315-45D1ARTRL7 use?

ADM6315-45D1ARTRL7 uses the 4-lead SOT-143 package (option RA-4), with gull-wing leads and RoHS-compliant lead-free finish. The "R7" suffix in the part number indicates tape-and-reel packaging (1000 units per reel), and the "L7" variant confirms compliance with Analog Devices' standard industrial temperature grade (−40°C to +125°C).