Analog Devices Inc./Maxim Integrated MAX6385XS16D6-T

Overview

MAX6385XS16D6-T from Maxim Integrated is a low-power, active-high push-pull μP supervisory circuit with factory-set 1.58V reset threshold, 560ms minimum VCC reset timeout, and manual reset input (MR). It monitors single supply voltage (VCC) in battery-powered or space-constrained systems and guarantees valid reset output down to VCC = 1V. Designed for critical microprocessor power-up sequencing in portable instrumentation and industrial controllers.

For engineers reviewing the MAX6385XS16D6-T datasheet, MAX6385XS16D6-T pinout, MAX6385XS16D6-T application, or MAX6385XS16D6-T equivalent, key selection criteria include its 1.58V ±2.5% threshold accuracy over –40°C to +125°C, 4-pin SC70 package footprint, MR debounce capability, and compatibility with 1.8V–5.0V supply rails.

Technical Context

The MAX6385XS16D6-T implements a precision bandgap-based reset comparator with ±2.5% threshold tolerance across temperature, paired with a monolithic RC timer for deterministic 560ms reset assertion after VCC recovery. Its internal 63kΩ MR pullup enables direct connection of momentary switches without external components.

Unlike open-drain variants, this part delivers active-high push-pull RESET output-eliminating need for external pullup-and supports guaranteed logic-level validity at VCC ≥ 1V, enabling robust operation during brownout conditions. It does not monitor auxiliary voltages (no RESET IN pin).

Key Specifications

Pinout & Package

MAX6385XS16D6-T uses a 4-pin SC70 package (outline 21-0098, land pattern 90-0187), optimized for low-profile, high-density applications. Pin 1 = VCC, Pin 2 = RESET (active-high push-pull), Pin 3 = MR (active-low manual reset), Pin 4 = GND.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar μP reset applications.

Compared with MAX6385XS16D3-T and TLV803EB15DBZR, the MAX6385XS16D6-T provides longer 560ms reset hold time for robust initialization of complex peripherals and retains MR functionality in a 4-pin SC70-enabling field serviceability without increasing board area.

Availability

MAX6385XS16D6-T is available at Aetrix Electronics and suitable for portable medical sensors, industrial PLC I/O modules, automotive body control units, and smart energy meters requiring stable component supply and AEC-Q100-compliant variants.

Supply support for MAX6385XS16D6-T 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

Maxim Integrated (now part of Analog Devices) designs precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and computing applications.

The MAX6381–MAX6390 family delivers ultra-low-power, factory-trimmed reset supervision for space- and battery-constrained microprocessor systems-emphasizing accuracy, small footprint, and guaranteed operation across extended temperature ranges.

FAQ

What is the exact reset threshold voltage of MAX6385XS16D6-T and how accurate is it over temperature?

The MAX6385XS16D6-T has a factory-set reset threshold of 1.58V, specified with ±2.5% accuracy over the full operating temperature range of –40°C to +125°C. This tolerance is guaranteed-not typical-and ensures reliable detection of 1.8V supply collapse across automotive and industrial environments without external calibration. The MAX6385XS16D6-T maintains this accuracy using a precision bandgap reference and laser-trimmed resistive divider.

Does MAX6385XS16D6-T support manual reset, and what is the MR input behavior?

Yes, MAX6385XS16D6-T includes an active-low manual reset (MR) input with an internal 63kΩ pullup resistor to VCC. Driving MR below 0.3×VCC asserts reset immediately, and the device holds RESET high for the full 560ms timeout after MR is released. MR accepts TTL/CMOS logic levels and requires no external components-ideal for direct connection to momentary switches in portable or industrial enclosures.

What package type and pin count does MAX6385XS16D6-T use, and is it RoHS-compliant?

MAX6385XS16D6-T uses a 4-pin SC70 package (outline 21-0098, land pattern 90-0187), measuring 1.6mm × 1.6mm × 0.9mm. The "+T" suffix confirms lead(Pb)-free and RoHS-compliant construction. This compact, surface-mount package supports high-density PCB layouts in space-constrained applications like handheld instruments and IoT edge nodes.

Can MAX6385XS16D6-T operate reliably at very low supply voltages?

Yes, MAX6385XS16D6-T guarantees correct reset output logic state down to VCC = 1.0V, with full functionality-including MR detection and timeout timing-maintained across the 1.0V to 5.5V operating range. This enables fail-safe operation during deep brownout events where other supervisors may release reset prematurely, making the MAX6385XS16D6-T especially valuable in battery-depleted scenarios.

Is MAX6385XS16D6-T pin-compatible with older Maxim reset ICs like MAX809?

Yes, MAX6385XS16D6-T is pin-compatible with MAX809/MAX810/MAX803 and other members of the MAX6326–MAX6348 series in the same 4-pin SC70 package. This allows drop-in replacement in existing designs-preserving layout, footprint, and bill-of-materials-while delivering improved 3μA supply current at 1.8V and tighter ±2.5% threshold accuracy versus older ±3% parts.