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FEATURES

1

2

3

4

8

7

6

5

SENSE1

SENSE2

SENSE3

GND

MR

RESET

RESET

D OR DGN PACKAGE

(TOP VIEW)

Typical Applications

SENSE 1

SENSE 2

RESET

TPS3307−33

SENSE 3

GND

100nF

RESET

GND

3.3V

5V

2.5V

470k

Ω

620k

Ω

Microcontrollers or Microprocessors

MSP430C325

DESCRIPTION

TPS3307-18, TPS3307-25, TPS3307-33

SLVS199B – DECEMBER 1998 – REVISED OCTOBER 2004

TRIPLE PROCESSOR SUPERVISORS

•

Triple Supervisory Circuits for DSP and

Processor-Based Systems

•

Power-On Reset Generator With Fixed Delay

Time of 200ms, No External Capacitor Needed

•

Temperature-Compensated Voltage Reference

•

Maximum Supply Current of 40µA

•

Supply Voltage Range: 2V to 6V

•

•

MSOP-8 and SO-8 Packages

•

Temperature Range : – 40

°C to 85°C

Figure 1 lists some of the typical applications for the TPS3307 family, and a schematic diagram for a

processor-based system application. This application uses TI part numbers TPS3307-33 and MSP430C325.

Figure 1. Applications Using the TPS3307 Family

The TPS3307 family is a series of micropower supply voltage supervisors designed for circuit initialization

primarily in DSP and processor-based systems, which require more than one supply voltage.

The product spectrum of the TPS3307-xx is designed for monitoring three independent supply voltages:

3.3V/1.8V/adj, 3.3V/2.5V/adj or 3.3V/5V/adj. The adjustable SENSE input allows the monitoring of any supply

voltage >1.25V.

The various supply voltage supervisors are designed to monitor the nominal supply voltage as shown in the

following supply voltage monitoring table.

supply voltage supervisor monitors the SENSEn inputs and keeps RESET active as long as SENSEn remain

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas

Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PowerPAD is a trademark of Texas Instruments.

PRODUCTION DATA information is current as of publication date.

Copyright © 1998–2004, Texas Instruments Incorporated

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.