TPS330718M

TRIPLE PROCESSOR SUPERVISORS

SGLS133A − JANUARY 2003 − REVISED DECEMBER 2003

2

POST OFFICE BOX 655303

description (continued)

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

following supply voltage monitoring table.

SUPPLY VOLTAGE MONITORING

DEVICE

NOMINAL SUPERVISED VOLTAGE

THRESHOLD VOLTAGE (TYP)

DEVICE

SENSE1

SENSE2

SENSE3

SENSE1

SENSE2

SENSE3

TPS3307-18

3.3 V

1.8 V

User defined

2.93 V

1.68 V

1.25 V†

† The actual sense voltage has to be adjusted by an external resistor divider according to the application requirements.

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

An internal timer delays the return of the RESET output to the inactive state (high) to ensure proper system reset.

again.

The TPS3307-18 incorporates a manual reset input, MR. A low level at MR causes RESET to become active.

In addition to the active-low RESET output, the TPS3307-18 includes an active-high RESET output.

ORDERING INFORMATION

TA

PACKAGE‡

ORDERABLE

PART NUMBER

TOP-SIDE

MARKING

−55

°C to 125°C

Ceramic Dual In Line (JG)

TPS3307-18MJGB

TPS3307-18MJGB

−55

°C to 125°C

Leadless Ceramic Chip Carrier (FK)

TPS3307-18MFKB

TPS3307-18MFKB

‡ Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are

available at www.ti.com/sc/package.

FUNCTION/TRUTH TABLES

MR

SENSE1>VIT1

SENSE2>VIT2

SENSE3>VIT3

RESET

RESET

L

X

X

X

L

H

H

0

0

0

L

H

H

0

0

1

L

H

H

0

1

0

L

H

H

0

1

1

L

H

H

1

0

0

L

H

H

1

0

1

L

H

H

1

1

0

L

H

H

1

1

1

H

L

X = Don’t care