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PRELIMINARY DATA

June 2005

This is preliminary information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

STM1810, STM1811, STM1812, STM1813

STM1815, STM1816, STM1817, STM1818

Low Power Reset Circuit

Rev 5

FEATURES SUMMARY

■

PRECISION MONITORING OF 3V, 3.3V,

AND 5V SUPPLY VOLTAGES

■

FOUR OUTPUT CONFIGURATIONS

–

Push-Pull, Active-High (STM1812,1817)

–

Push-Pull, Active-Low (STM1810,1815)

–

Open Drain, Active-Low (STM1811,1816)

–

Open Drain, Active-Low with Push-Button

Detect (STM1813,1818)

■

RESET PULSE WIDTH - 100ms (min)

■

LOW SUPPLY CURRENT - 4uA (typ)

■

GUARANTEED ASSERTION DOWN TO

■

FACTORY-TRIMMED RESET

THRESHOLDS OF 2.55V, 2.88V, 3.06V,

4.37V, and 4.62V (typ)

■

POWER SUPPLY TRANSIENT IMMUNITY

■

PUSH-BUTTON/MANUAL RESET DETECT

(STM1813/1818)

■

OPERATING TEMPERATURE:

–40°C TO 105°C

■

±2.5% RESET THRESHOLD ACCURACY

(–40°C TO 105°C)

■

AVAILABLE IN THE SOT23-3 PACKAGE

■

FULLY COMPATIBLE WITH DS181x AND

MXD181x PRODUCTS

Figure 1. Packages

Table 1. Device Options

Note: 1. Active-low RST with internal pull-up resistor

SOT23-3 (WX)

5V

3.3V/

3.0V

Active-Low

RESET

(Push-Pull)

Active-Low

RESET

(Open Drain)

Active-High

RESET

(Push-Pull)

Active-Low RESET

(Open Drain,

Bi-directional, with MR Detect)

STM1810L/M

✔✔

STM1811L/M

✔

STM1812L/M

✔✔

STM1813L/M

✔

✔

STM1815T/S/R

✔✔

STM1816T/S/R

✔

STM1817T/S/R

✔✔

STM1818T/S/R

✔✔