Analog Devices Inc. ADM6315-26D4ARTZR7

Overview

ADM6315-26D4ARTZR7 from Analog Devices is a precision open-drain microprocessor supervisory circuit in SOT-143 package, monitoring 2.63 V supply with ±3.5% threshold accuracy over −40°C to +125°C, featuring 1120 ms minimum reset timeout, 5 μA typical supply current, and built-in debounced manual reset input. It ensures reliable power-up, brownout, and system recovery in embedded controllers and safety-critical instrumentation.

For engineers reviewing the ADM6315-26D4ARTZR7 datasheet, ADM6315-26D4ARTZR7 pinout, ADM6315-26D4ARTZR7 application, or ADM6315-26D4ARTZR7 equivalent, key selection considerations include its 2.63 V trip point, 1120 ms reset timeout, open-drain RESET output compatible with higher-voltage logic, manual reset immunity to <100 ns glitches, and operation down to VCC > 1 V.

Technical Context

The ADM6315-26D4ARTZR7 implements a precision bandgap-based voltage reference comparator with temperature-compensated threshold (60 ppm/°C), enabling stable 2.63 V monitoring across automotive-grade temperature range. Its internal timing circuit generates a guaranteed minimum 1120 ms active-low reset pulse after VCC rises above threshold or MR deasserts.

It features an open-drain RESET output capable of sinking 3.2 mA at VCC > 4.25 V and 80 μA down to VCC = 1 V, plus a debounced manual reset input (MR) with 1 μs minimum pulse width acceptance and 100 ns glitch rejection - all integrated in a 4-lead SOT-143 footprint.

Key Specifications

Pinout & Package

ADM6315-26D4ARTZR7 is housed in a 4-lead SOT-143 package (RA-4), measuring 2.9 mm × 2.4 mm × 1.1 mm, with gull-wing leads optimized for automated assembly and thermal performance (θJA = 330°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6315US26D4+T and TPS3808G33DBVR, the ADM6315-26D4ARTZR7 uniquely combines 2.63 V precision monitoring, 1120 ms timeout, ratio-based MR input, and open-drain RESET in a single SOT-143 device - making it optimal for legacy-compatible brownout protection where voltage and timing match are non-negotiable.

Availability

ADM6315-26D4ARTZR7 is available at Aetrix Electronics and suitable for automotive body control modules, industrial PLC I/O subsystems, and medical infusion pump controllers requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.

Supply support for ADM6315-26D4ARTZR7 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 designed specifically for robust, low-power voltage supervision in harsh environments - delivering precision reset generation, manual reset capability, and wide-temperature operation without external components.

FAQ

What is the exact reset threshold voltage of the ADM6315-26D4ARTZR7, and how does it vary with temperature?

The ADM6315-26D4ARTZR7 has a nominal reset threshold of 2.63 V, with tolerance of ±2.5% over −40°C to +85°C and ±3.5% over −40°C to +125°C. Its temperature coefficient is 60 ppm/°C, meaning threshold drift is bounded and predictable - critical for designs operating across extended automotive or industrial temperature ranges. This specification is confirmed in Table 1 of the Rev. I datasheet.

Does the ADM6315-26D4ARTZR7 support manual reset, and what are the electrical requirements for the MR pin?

Yes, the ADM6315-26D4ARTZR7 includes a debounced manual reset (MR) input. MR is active-low, accepts pulses ≥1 μs, and rejects glitches <100 ns. Its logic thresholds scale with VCC: VIL = 0.3 × VCC and VIH = 0.7 × VCC when VTH < 4 V. This allows direct interfacing with 1.8 V, 2.5 V, or 3.3 V GPIO without level shifters - a verified feature per Table 1 and Figure 11.

What is the minimum VCC voltage at which the ADM6315-26D4ARTZR7 can still assert RESET, and why does this matter?

The ADM6315-26D4ARTZR7 asserts RESET down to VCC > 1 V, as specified in the Absolute Maximum Ratings and General Description sections. This capability ensures fail-safe reset generation even during deep brownout or battery depletion scenarios - preserving system integrity when other ICs may already be malfunctioning. It is a key differentiator versus supervisors requiring ≥1.8 V minimum VCC.

Can the ADM6315-26D4ARTZR7's RESET output drive a 5 V logic input, and what external component is required?

Yes, the ADM6315-26D4ARTZR7's open-drain RESET output can interface with 5 V logic inputs. An external pull-up resistor to the 5 V rail is required - typically 10 kΩ - to establish the high state. The output sinks up to 3.2 mA at VCC > 4.25 V (Table 1), ensuring solid low-level drive while allowing voltage translation across supply domains without additional circuitry.

Is the ADM6315-26D4ARTZR7 pin-compatible with any industry-standard supervisory ICs, and which ones?

Yes, the ADM6315-26D4ARTZR7 is explicitly pin-compatible with the ADM811, as stated in the Features section of the datasheet. Both devices share identical SOT-143 pinout (GND, RESET, MR, VCC) and functionally equivalent timing and electrical characteristics - enabling drop-in replacement in existing ADM811-based designs without PCB modification.