Analog Devices Inc. ADM6384YKS39D2Z-R7

Overview

ADM6384YKS39D2Z-R7 from Analog Devices is a precision microprocessor supervisory circuit in a 4-lead SC70 package, monitoring VCC supply voltage with a fixed 3.9 V reset threshold and 20 ms minimum reset timeout. It features push-pull active-low RESET output, manual reset (MR) input with internal 52 kΩ pull-up, and guaranteed valid reset assertion down to VCC = 1 V. It is used in embedded controllers requiring reliable power-on and brownout reset during startup or voltage sag.

For engineers reviewing the ADM6384YKS39D2Z-R7 datasheet, ADM6384YKS39D2Z-R7 pinout, ADM6384YKS39D2Z-R7 application, or ADM6384YKS39D2Z-R7 equivalent, key selection criteria include reset threshold accuracy (±2% over −40°C to +125°C), low quiescent current (6 µA at 3.6 V), glitch-immune MR input, and SC70 footprint compatibility for space-constrained portable designs.

Technical Context

The ADM6384YKS39D2Z-R7 implements a precision bandgap-based voltage reference and comparator to detect when VCC falls below 3.9 V (typical), triggering an active-low reset pulse with a guaranteed minimum duration of 20 ms. Its internal debounce logic rejects MR input transients <100 ns and ensures clean reset initiation from external push-button switches.

Reset assertion remains active for the full timeout period after VCC rises above threshold or after MR returns high, independent of subsequent VCC fluctuations within that window. The push-pull output stage sinks up to 3.2 mA at VCC ≥ 4.5 V while maintaining VOL ≤ 0.4 V, enabling direct interface with standard CMOS microcontroller reset inputs.

Key Specifications

Pinout & Package

ADM6384YKS39D2Z-R7 is housed in a 4-lead SC70 (KS-4) package, measuring 2.20 mm × 1.35 mm × 0.9 mm, optimized for high-density PCB layouts in portable and automotive control modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX6326UT39D3+T and TPS3808G39DBVR, ADM6384YKS39D2Z-R7 delivers identical 3.9 V threshold and 20 ms timeout in the smallest SC70 footprint, with integrated MR debouncing and guaranteed 1 V operation - making it optimal for compact, cost-sensitive, and safety-critical reset-only applications.

Availability

ADM6384YKS39D2Z-R7 is available at Aetrix Electronics and suitable for industrial PLC controllers, automotive body control modules, and portable medical monitors requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.

Supply support for ADM6384YKS39D2Z-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, serving industrial, automotive, communications, and healthcare markets since 1965.

The ADM6384 family is part of Analog Devices' precision power monitoring portfolio, designed specifically for deterministic, low-power microprocessor reset supervision in harsh thermal and electrical environments.

FAQ

What is the exact reset threshold voltage of ADM6384YKS39D2Z-R7?

The ADM6384YKS39D2Z-R7 has a nominal reset threshold of 3.9 V, with a guaranteed range of 3.8 V to 4.0 V over −40°C to +125°C. This value is factory-trimmed and specified in Table 1 of the Rev. E datasheet under "ADM6384x39x" row. The device uses a precision bandgap reference to maintain stability, with 60 ppm/°C temperature coefficient.

Does ADM6384YKS39D2Z-R7 support manual reset functionality?

Yes, ADM6384YKS39D2Z-R7 includes a dedicated MR (Manual Reset) input on Pin 3. It is active-low, features an internal 52 kΩ pull-up resistor, and accepts pulses as short as 1 µs. When pulled low via an external switch or logic signal, it forces the RESET output low for the full 20 ms timeout period - enabling field-initiated system recovery without power cycling.

What is the minimum operating voltage for ADM6384YKS39D2Z-R7 to assert a valid reset?

ADM6384YKS39D2Z-R7 guarantees valid RESET output down to VCC = 1 V. At this voltage, the push-pull output maintains VOL ≤ 0.3 V while sinking 80 µA, ensuring compatible logic-level assertion into most microcontroller reset inputs. This capability is explicitly tested and specified in the "RESET OUTPUT VOLTAGE" section of the datasheet.

Can ADM6384YKS39D2Z-R7 be used with a 1.8 V supply rail?

No - ADM6384YKS39D2Z-R7 is not intended for 1.8 V rail supervision. Its fixed 3.9 V threshold is designed for 3.3 V or 5 V systems where margin exists above nominal voltage. For 1.8 V rails, Analog Devices offers variants like ADM6384YKS16D2Z-R7 (1.58 V threshold). Using ADM6384YKS39D2Z-R7 on 1.8 V would result in permanent reset assertion.

What package type and dimensions does ADM6384YKS39D2Z-R7 use?

ADM6384YKS39D2Z-R7 uses the 4-lead SC70 (KS-4) package per EIAJ SC82 outline, with body dimensions of 2.20 mm × 1.35 mm × 0.9 mm and lead pitch of 0.65 mm. Pin 1 indicator is marked by a dot; the package is RoHS-compliant and rated for reflow per JEDEC J-STD-020 (Pb-free: 260°C, 40 sec).