Analog Devices Inc. ADM6315-26D2ARTRL7

Overview

ADM6315-26D2ARTRL7 from Analog Devices is a precision open-drain microprocessor supervisory circuit designed to monitor 2.63 V supply rails with ±2.5% threshold accuracy over −40°C to +85°C, 20 ms minimum reset timeout, and 5 μA typical supply current. It asserts active-low RESET during power-up, brownout (35 μs response), or manual reset via debounced MR input, and is used in automotive safety systems and industrial controllers requiring reliable power sequencing.

For engineers reviewing the ADM6315-26D2ARTRL7 datasheet, ADM6315-26D2ARTRL7 pinout, ADM6315-26D2ARTRL7 application, or ADM6315-26D2ARTRL7 equivalent, key selection criteria include its 2.63 V trip point, 20 ms reset timeout, SOT-143 package compatibility, manual reset immunity to <100 ns glitches, and operation down to VCC > 1 V.

Technical Context

The ADM6315-26D2ARTRL7 integrates a precision voltage reference comparator with temperature-compensated threshold (60 ppm/°C) and a programmable reset timer. Its open-drain RESET output sinks up to 3.2 mA at VCC > 4.25 V and supports level-shifting interfaces where external logic drives higher voltages than VCC.

It features a debounced manual reset input (MR) with guaranteed 1 μs pulse acceptance and 100 ns glitch rejection, plus internal pull-up resistance (32–100 kΩ) on MR. The device operates across −40°C to +125°C and asserts reset within 35 μs during VCC fall at 1 mV/μs.

Key Specifications

Pinout & Package

ADM6315-26D2ARTRL7 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 space-constrained PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6315US26D2+T and TPS3808G125DBVR, ADM6315-26D2ARTRL7 offers optimal balance of SOT-143 space efficiency, 20 ms deterministic timing, and proven automotive-grade transient immunity - making it preferred for compact, noise-prone embedded controllers where layout reuse is essential.

Availability

ADM6315-26D2ARTRL7 is available at Aetrix Electronics and suitable for automotive safety systems, industrial motor controllers, and portable medical instruments requiring stable component supply, RoHS-compliant packaging, and guaranteed long-term availability through Analog Devices' product longevity program.

Supply support for ADM6315-26D2ARTRL7 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 ADM6315 family was developed specifically for cost-sensitive, space-constrained microprocessor supervision in harsh environments - delivering precision voltage monitoring, fast transient response, and manual reset capability in minimal SOT-143 footprint.

FAQ

What is the exact reset threshold voltage and tolerance for ADM6315-26D2ARTRL7?

The ADM6315-26D2ARTRL7 has a nominal reset threshold of 2.63 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 is specified in Table 1 of the Rev. I datasheet under "RESET VOLTAGE THRESHOLD (VTH)" and confirmed in Table 5 for the -26D2 variant. The threshold is factory-trimmed and does not require external components.

Does ADM6315-26D2ARTRL7 support manual reset, and how is it implemented?

Yes, ADM6315-26D2ARTRL7 includes a dedicated MR (Manual Reset) pin (Pin 3) that is active-low and debounced. It accepts input pulses ≥1 μs duration, rejects glitches <100 ns, and features an internal pull-up resistor (32–100 kΩ). When pulled low, MR forces RESET low regardless of VCC level - enabling operator-initiated or system-controlled reset without additional circuitry.

What is the minimum VCC voltage at which ADM6315-26D2ARTRL7 can still assert RESET?

ADM6315-26D2ARTRL7 guarantees RESET assertion down to VCC > 1 V, as stated in the "Operating Voltage" specification (Min = 1 V) and confirmed in the General Description. At VCC = 1 V, it can sink 80 μA on RESET while maintaining valid logic levels, enabling brownout detection in deeply undervolted conditions.

Is ADM6315-26D2ARTRL7 pin-compatible with other devices in the ADM6315 family?

Yes, all ADM6315 variants - including ADM6315-26D2ARTRL7 - share identical 4-lead SOT-143 (RA-4) pinout: Pin 1 = GND, Pin 2 = RESET, Pin 3 = MR, Pin 4 = VCC. This uniformity allows direct substitution among trip point and timeout variants (e.g., -26D1, -26D3) without PCB changes, provided timing and threshold requirements align.

What is the RESET timeout period for ADM6315-26D2ARTRL7, and is it adjustable?

The ADM6315-26D2ARTRL7 has a fixed minimum RESET timeout period of 20 ms, as indicated by the "D2" suffix per Table 5. This value is factory-programmed and non-adjustable. The actual timeout varies from 20 ms to 40 ms over −40°C to +85°C and from 16 ms to 48 ms over −40°C to +125°C, ensuring robust timing margin across operating conditions.