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Renesas Electronics X5043S8Z — Discrete Semiconductors

X5043S8Z Simple Reset/Power-On Reset, 4.38V Threshold

MPNX5043S8Z
End of Life

Renesas X5043S8Z, Simple Reset/Power-On Reset, Active Low, Open Drain/Open Collector, 100ms Minimum Reset Timeout, 4.38V Threshold, 0°C ~ 70°C, 8-SOIC, Tube.

$6.12Ref. price · indicative, final on quote
Renesas Electronics X5043S8Z datasheet (PDF)
Packaging8-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

X5043S8Z specifications
ParameterValue
TypeSimple Reset/Power-On Reset
MountingSurface Mount
Voltage - threshold4.38V
Number of voltages monitored1
Operating temperature0°C ~ 70°C (TA)
ResetActive Low
OutputOpen Drain or Open Collector
PackageTube
Reset timeout100ms Minimum
Case8-SOIC (0.154\", 3.90mm Width)

Product details

100 ms reset timeout — why it matters

The 100 ms minimum reset timeout gives the processor time to complete its power-on reset cycle before the supervisor releases the reset line. Processors with fast-starting internal oscillators or those that need a longer hold-off for external crystal start-up may need a longer timeout — this part's 100 ms minimum is a floor, and the actual timeout can be longer but not shorter. If your BOM requires a precise timeout or a programmable delay, this fixed supervisor may not fit.

Plan for manual tube loading or a tube-to-reel transfer step.

Frequently asked questions

Is X5043S8Z RoHS compliant?

Yes, the X5043S8Z is ROHS3 compliant.

What is the X5043S8Z output type?

The output is open drain or open collector, active low.

Can X5043S8Z replace X5043S?

The X5043S8Z is a surface-mount variant of the X5043S family. The S8Z suffix indicates the 8-SOIC package and tube packaging. If the original X5043S was also in an 8-SOIC package, the X5043S8Z is a direct replacement. Verify the original part's package code before substituting.

Is X5043S8Z compatible with 5V systems?

Yes — the 4.38 V threshold is designed for a nominal 5 V supply rail. The open-drain output can be pulled up to any voltage within the IC's ratings, so it interfaces with 3.3 V or 5 V logic.