Analog Devices Inc. ADM6384YKS26D3Z-R7

Overview

ADM6384YKS26D3Z-R7 from Analog Devices is a precision microprocessor supervisory circuit in 4-lead SC70 package, monitoring VCC with 2.63 V reset threshold (±0.07 V), 140 ms minimum reset timeout, and guaranteed active-low push-pull RESET output valid down to VCC = 1 V. It supports manual reset via MR input with 52 kΩ internal pull-up and operates across −40°C to +125°C for embedded control and portable systems.

For engineers reviewing the ADM6384YKS26D3Z-R7 datasheet, ADM6384YKS26D3Z-R7 pinout, ADM6384YKS26D3Z-R7 application, or ADM6384YKS26D3Z-R7 equivalent, key selection criteria include reset threshold accuracy at temperature, glitch immunity against sub-100 ns transients, low 7 µA typical supply current at 2.5 V, and compatibility with brownout recovery timing in battery-powered microcontroller units.

Technical Context

The ADM6384YKS26D3Z-R7 implements a precision bandgap-based voltage reference with 60 ppm/°C temperature coefficient to generate its 2.63 V reset threshold. Its internal debounce logic rejects MR pulses shorter than 1 µs and ignores fast negative-going VCC transients up to 100 ns.

Reset assertion occurs when VCC falls below 2.63 V or MR is pulled low; deassertion follows a fixed 140 ms timeout after VCC rises above threshold or MR returns high. The push-pull RESET output sinks up to 3.2 mA at VCC ≥ 4.5 V while maintaining VOL ≤ 0.4 V.

Key Specifications

Pinout & Package

ADM6384YKS26D3Z-R7 is housed in a 4-lead SC70 (KS-4) package measuring 2.20 mm × 1.35 mm × 0.90 mm, optimized for space-constrained PCB layouts in portable and sensor-edge applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADM6384YKS26D3Z-R7, MAX6384TTUT+T consumes more current and occupies more PCB area, while TPS3808G18DBVR lacks MR functionality and offers fixed threshold-neither provides the combination of 2.63 V precision, 140 ms timeout, MR support, and SC70 size found in ADM6384YKS26D3Z-R7.

Availability

ADM6384YKS26D3Z-R7 is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and portable medical sensor nodes requiring stable component supply with guaranteed long-term availability and RoHS-compliant packaging.

Supply support for ADM6384YKS26D3Z-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with engineering centers worldwide.

The ADM6384 family delivers precision, low-power microprocessor supervision for harsh-environment applications, targeting systems where supply integrity, thermal stability, and minimal board area are critical design constraints.

FAQ

What is the exact reset threshold voltage of ADM6384YKS26D3Z-R7 and how does it vary with temperature?

The ADM6384YKS26D3Z-R7 has a nominal reset threshold of 2.63 V, with min/max values of 2.56 V and 2.69 V across −40°C to +125°C. Its temperature coefficient is 60 ppm/°C, meaning threshold drift is bounded at ±0.75% over the full range-verified in Figure 7 of the Rev. E datasheet. This ensures predictable brownout response in thermally variable environments without calibration.

Does ADM6384YKS26D3Z-R7 require an external pull-up resistor on the MR pin?

No, ADM6384YKS26D3Z-R7 includes a 52 kΩ internal pull-up resistor on the MR pin, as confirmed in Table 3 and the Applications Information section. This allows direct connection of a momentary switch between MR and GND without external components. The internal pull-up ensures MR remains logic-high when unconnected, eliminating floating-input risk.

Can ADM6384YKS26D3Z-R7 guarantee valid reset output when VCC drops below 1 V?

ADM6384YKS26D3Z-R7 guarantees RESET output validity only down to VCC = 1 V, per the "RESET OUTPUT VOLTAGE" specification table. Below 1 V, the output may become indeterminate. To extend validity to 0 V, the datasheet recommends adding a 100 kΩ external resistor from RESET to GND-this pulls the line low when the internal driver loses drive capability.

What is the minimum pulse width required on the MR input to trigger a reset in ADM6384YKS26D3Z-R7?

The MR input of ADM6384YKS26D3Z-R7 requires a minimum low pulse width of 1 µs to initiate reset, as specified in the "MANUAL RESET INPUT" section of Table 1. This value is guaranteed across temperature and voltage; Figure 11 shows actual delay remains ≤340 ns at −40°C, confirming robustness against short noise spikes.

How does ADM6384YKS26D3Z-R7 handle fast VCC transients, and what is its glitch rejection capability?

ADM6384YKS26D3Z-R7 rejects transients shorter than 100 ns (typical), as stated in the "MR Glitch Rejection" spec and validated in Figure 10. For a 2.63 V threshold device, it tolerates a 100 mV dip lasting ≤8 µs without asserting reset-enabling reliable operation in noisy DC/DC converter or motor-drive environments where sub-10 µs supply disturbances occur.