STM6904

Description

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Description

The STM6904 supervisor is a low voltage/low supply current processor supervisor,

designed to monitor up to four system power supply voltages. This device is targeted at

applications such as Set-Top Boxes (STBs), portable, battery-powered systems, networking

and communication systems.

The device supports a push-button type manual reset input (MR). Two of the four supply

using externally adjustable threshold (0.600V internal reference) to meet specific level

requirements.

If any of the four monitored voltages drops below its factory-trimmed or adjustable

thresholds, or if the MR is asserted to logic low, the reset output RST is asserted (driven

monitored supplies rise above their respective thresholds and MR returns to High. This

The STM6904 is available in a standard 8-lead MSOP (TSSOP) package.

Figure 1.

Logic diagram

Figure 2.

MSOP/TSSOP-8 connections

V4IN

STM6904

MR

RST

V2IN

V3IN

ai13976

1

V3IN

V4IN

MR

RST

V2IN

ai13977

2

3

4

8

7

6

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