INPUT

+

RESET

-

GND

9

LM8365

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SNVS233C – MARCH 2003 – REVISED DECEMBER 2015

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7 Detailed Description

7.1 Overview

The LM8365 ultra-low current voltage detector was designed to monitor voltages and to provide an indication

the LM8365 drives a time delay generator that may be programmed for fixed lengths of time depending on the

application needs. This characteristic is displayed in the typical operating timing diagram in Figure 1.

7.2 Functional Block Diagram

Figure 13. Open-Drain Output

7.3 Feature Description

built-in hysteresis to help prevent erratic reset operation when the input voltage crosses the threshold.

The LM8365 has a wide variety of applications that can take advantage of its precision and low current

consumption to monitor Input voltages even though it was designed as a reset controller in portable

microprocessor based systems. It is a very cost-effective and space-saving device that will protect your more

expensive investments of microprocessors and other devices that need a specified supply voltage and time delay

for proper operation.

The propagation delay time for the LM8365 is measured using a 470-k

Ω pullup resistor connected to from the

RESET output pin to 5 V in addition to a 10-pF capacitive load connected from the same pin to GND. Figure 2

the propagation from Low-to-High.