below 1V, so does the IC’s ability to sink current at

RESET. Also, with any pullup, RESET will be pulled high

depends on the pullup resistor value and the voltage to

which it is connected.

Benefits of Highly Accurate

Reset Threshold

Most µP supervisor ICs have reset threshold voltages

between 5% and 10% below the value of nominal sup-

ply voltages. This ensures a reset will not occur within

5% of the nominal supply, but will occur when the sup-

ply is 10% below nominal.

When using ICs rated at only the nominal supply ±5%,

this leaves a zone of uncertainty where the supply is

between 5% and 10% low, and where the reset may or

may not be asserted.

The MAX8_ _L/T/Z use highly accurate circuitry to

ensure that reset is asserted close to the 5% limit, and

long before the supply has declined to 10% below

nominal.

Chip Information

TRANSISTOR COUNT: 275 (SOT23)

380 (SC70)

Package Information

For the latest package outline information and land patterns,

“-” in the package code indicates RoHS status only. Package

drawings may show a different suffix character, but the drawing

pertains to the package regardless of RoHS status.

3-Pin Microprocessor Reset Circuits

_______________________________________________________________________________________

7

PACKAGE TYPE

PACKAGE CODE

DOCUMENT NO.

3 SC70

X3-2

21-0075

3 SOT23

U3-1

21-0051