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Analog Devices MAX6805US46D3+T — Discrete Semiconductors
Analog Devices

MAX6805US46D3+T Simple Reset/Power-On Reset, 4.63V Threshold

MPNMAX6805US46D3+T
End of Life

Maxim Integrated MAX6805US46D3+T, Simple Reset/Power-On Reset, Active Low, Open Drain or Open Collector, 4.63V Threshold, 100ms Minimum Reset Timeout, -40°C to 125°C, SOT-143-4.

$5.65Ref. price · indicative, final on quote
MAX6805US46D3+T datasheet
PackagingTO-253-4, TO-253AA
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
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Specifications

MAX6805US46D3+T Technical Specifications
ParameterValue
TypeSimple Reset/Power-On Reset
Mounting typeSurface Mount
Voltage - threshold4.63V
Number of voltages monitored1
Operating temperature-40°C ~ 125°C (TA)
ResetActive Low
OutputOpen Drain or Open Collector
PackageTape & Reel (TR); Cut Tape (CT)
Reset timeout100ms Minimum
CaseTO-253-4, TO-253AA

Product details

What this supervisor does and where it fits

The Maxim Integrated MAX6805US46D3+T is a single-channel simple reset/power-on reset supervisor in a SOT-143-4 package. It monitors a single voltage rail with a 4.63V threshold and asserts a reset signal when the supply drops below that level. The active-low, open-drain output lets multiple supervisors share a common reset bus via a pull-up resistor — a common arrangement in multi-rail systems where any one rail fault must trigger a system-wide reset. The 100ms minimum reset timeout gives the processor and peripherals time to stabilize after the supply returns.

Temperature range and deployment environment

Rated from -40°C to 125°C, this part is specified for industrial and automotive under-hood environments. The extended temperature range covers the thermal cycling found in engine bays, factory-floor enclosures, and outdoor telecom cabinets. If your BOM calls for a supervisor that holds its threshold across a wide ambient swing, this is the tier to specify.

Package and mounting

Housed in a SOT-143-4 surface-mount package, the MAX6805US46D3+T occupies minimal board area and is compatible with standard reflow profiles. The four-pin footprint — VCC, GND, RESET, and a no-connect — is a common supervisor layout, making it a drop-in fit for many existing PCB designs that use a similar pinout.

Lifecycle and compliance

The MAX6805US46D3+T is listed as active in production with ROHS3 compliance. For a BOM freeze, this part carries no near-term obsolescence risk. The ROHS3 status covers the current exemption list, so it meets EU and most global environmental requirements without a waiver.

Frequently asked questions

What is the closest pin-compatible alternative to MAX6805US46D3+T?

The MAX6805US46D2+T is a direct variant with a different threshold voltage (4.63V vs the D2's threshold). Both share the same SOT-143-4 package, active-low open-drain output, and 100ms timeout. The D3 suffix indicates the 4.63V threshold; the D2 uses a different trip point. If your design requires the exact 4.63V threshold, the D3 is the correct choice.

Can MAX6805US46D3+T be used with a 3.3V supply?

No — the threshold is 4.63V, so the part monitors a 5V rail, not a 3.3V one. For a 3.3V rail, you would need a supervisor with a lower threshold, such as the MAX6805US33D3+T or a similar variant.