2024年5月17日发(作者：商余馥)
元器件交易网
TPS3307-18, TPS3307-25, TPS3307-33
TRIPLE PROCESSOR SUPERVISORS
SLVS199 – DECEMBER 1998
D
Triple Supervisory Circuits for DSP and
D
D
D
D
D
D
D
Processor-Based Systems
Power-On Reset Generator with Fixed
Delay Time of 200 ms, No External
Capacitor Needed
Temperature-Compensated Voltage
Reference
Maximum Supply Current of 40 µA
Supply 2Vto6V
Defined RESET Output from V
DD
≥ 1.1 V
MSOP-8 and SO-8 Packages
–40°C to 85°C
D OR DGN PACKAGE
(TOP VIEW)
SENSE1
SENSE2
SENSE3
GND
1
2
3
4
8
7
6
5
V
DD
MR
RESET
RESET
typical applications
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.
2.5 V5 V3.3 V
V
DD
SENSE 1
SENSE 2
470 kΩ
RESET
100 nF
V
DD
MSP430C325
RESET
GND
•
•
•
•
•
•
•
•
Applications using DSPs, Microcontrollers
or Microprocessors
Industrial Equipment
Programmable Controls
Automotive Systems
Portable/Battery Powered Equipment
Intelligent Instruments
Wireless Communication Systems
Notebook/Desktop Computers
TPS3307–33
SENSE 3
620 kΩ
GND
Figure 1. Applications Using the TPS3307 Family
description
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:
3.3 V/1.8 V/adj, 3.3 V/2.5 V/adj or 3.3 V/5 V/adj. The adjustable SENSE input allows the monitoring of any supply
voltage >1.25 V.
The various supply voltage supervisors are designed to monitor the nominal supply voltage as shown in the
following supply voltage monitoring table.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright © 1998, Texas Instruments Incorporated
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
•
1
元器件交易网
TPS3307-18, TPS3307-25, TPS3307-33
TRIPLE PROCESSOR SUPERVISORS
SLVS199 – DECEMBER 1998
description (continued)
SUPPLY VOLTAGE MONITORING
DEVICE
TPS3307-18
TPS3307-25
TPS3307-33
NOMINAL SUPERVISED VOLTAGE
SENSE1
3.3 V
3.3 V
5 V
SENSE2
1.8 V
2.5 V
3.3 V
SENSE3
User defined
User defined
User defined
THRESHOLD VOLTAGE (TYP)
SENSE1
2.93 V
2.93 V
4.55 V
SENSE2
1.68 V
2.25 V
2.93 V
SENSE3
1.25 V
†
1.25 V
†
1.25 V
†
†
The actual sense voltage has to be adjusted by an external resistor divider according to the application requirements.
During power-on, RESET is asserted when the supply voltage V
DD
becomes higher than 1.1 V. Thereafter, the
supply voltage supervisor monitors the SENSEn inputs
and keeps RESET active as long as SENSEn
remain
below the threshold voltage V
IT+
.
An internal timer delays the return of the RESET output to the inactive state (high) to ensure proper system reset.
The delay time, t
d
typ
= 200 ms, starts after all SENSEn inputs
have risen above the threshold voltage V
IT+
. When
the voltage at any SENSE input drops below the threshold voltage V
IT–
, the RESET output becomes active (low)
again.
The TPS3307-xx family of devices 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-xx family includes an active-high
RESET output.
The devices are available in either 8-pin MSOP or standard 8-pin SO packages.
The TPS3307-xx devices are characterized for operation over a temperature range of –40°C to 85°C.
AVAILABLE OPTIONS
PACKAGED DEVICES
T
A
SMALL OUTLINE
(D)
TPS3307-18D
–40_C to 85_C
TPS3307-25D
TPS3307-33D
PowerPAD™
µ-SMALL OUTLINE
(DGN)
TPS3307-18DGN
TPS3307-25DGN
TPS3307-33DGN
FUNCTION/TRUTH TABLES
MR
L
H
H
H
H
H
H
H
H
†
X = Don’t care
SENSE1>V
IT1
X
†
0
0
0
0
1
1
1
1
SENSE2>V
IT2
X
†
0
0
1
1
0
0
1
1
SENSE3>V
IT3
X
0
1
0
1
0
1
0
1
RESET
L
L
L
L
L
L
L
L
H
RESET
H
H
H
H
H
H
H
H
L
MARKING
DGN PACKAGE
TIAAP
TIAAQ
TIAAR
CHIP FORM
(Y)
TPS3307-18Y
TPS3307-25Y
TPS3307-33Y
PowerPAD is a trademark of Texas Instruments Incorporated.
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
•
2024年5月17日发(作者：商余馥)
元器件交易网
TPS3307-18, TPS3307-25, TPS3307-33
TRIPLE PROCESSOR SUPERVISORS
SLVS199 – DECEMBER 1998
D
Triple Supervisory Circuits for DSP and
D
D
D
D
D
D
D
Processor-Based Systems
Power-On Reset Generator with Fixed
Delay Time of 200 ms, No External
Capacitor Needed
Temperature-Compensated Voltage
Reference
Maximum Supply Current of 40 µA
Supply 2Vto6V
Defined RESET Output from V
DD
≥ 1.1 V
MSOP-8 and SO-8 Packages
–40°C to 85°C
D OR DGN PACKAGE
(TOP VIEW)
SENSE1
SENSE2
SENSE3
GND
1
2
3
4
8
7
6
5
V
DD
MR
RESET
RESET
typical applications
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.
2.5 V5 V3.3 V
V
DD
SENSE 1
SENSE 2
470 kΩ
RESET
100 nF
V
DD
MSP430C325
RESET
GND
•
•
•
•
•
•
•
•
Applications using DSPs, Microcontrollers
or Microprocessors
Industrial Equipment
Programmable Controls
Automotive Systems
Portable/Battery Powered Equipment
Intelligent Instruments
Wireless Communication Systems
Notebook/Desktop Computers
TPS3307–33
SENSE 3
620 kΩ
GND
Figure 1. Applications Using the TPS3307 Family
description
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:
3.3 V/1.8 V/adj, 3.3 V/2.5 V/adj or 3.3 V/5 V/adj. The adjustable SENSE input allows the monitoring of any supply
voltage >1.25 V.
The various supply voltage supervisors are designed to monitor the nominal supply voltage as shown in the
following supply voltage monitoring table.
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of
TexasInstruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of Texas Instruments
standard warranty. Production processing does not necessarily include
testing of all parameters.
Copyright © 1998, Texas Instruments Incorporated
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
•
1
元器件交易网
TPS3307-18, TPS3307-25, TPS3307-33
TRIPLE PROCESSOR SUPERVISORS
SLVS199 – DECEMBER 1998
description (continued)
SUPPLY VOLTAGE MONITORING
DEVICE
TPS3307-18
TPS3307-25
TPS3307-33
NOMINAL SUPERVISED VOLTAGE
SENSE1
3.3 V
3.3 V
5 V
SENSE2
1.8 V
2.5 V
3.3 V
SENSE3
User defined
User defined
User defined
THRESHOLD VOLTAGE (TYP)
SENSE1
2.93 V
2.93 V
4.55 V
SENSE2
1.68 V
2.25 V
2.93 V
SENSE3
1.25 V
†
1.25 V
†
1.25 V
†
†
The actual sense voltage has to be adjusted by an external resistor divider according to the application requirements.
During power-on, RESET is asserted when the supply voltage V
DD
becomes higher than 1.1 V. Thereafter, the
supply voltage supervisor monitors the SENSEn inputs
and keeps RESET active as long as SENSEn
remain
below the threshold voltage V
IT+
.
An internal timer delays the return of the RESET output to the inactive state (high) to ensure proper system reset.
The delay time, t
d
typ
= 200 ms, starts after all SENSEn inputs
have risen above the threshold voltage V
IT+
. When
the voltage at any SENSE input drops below the threshold voltage V
IT–
, the RESET output becomes active (low)
again.
The TPS3307-xx family of devices 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-xx family includes an active-high
RESET output.
The devices are available in either 8-pin MSOP or standard 8-pin SO packages.
The TPS3307-xx devices are characterized for operation over a temperature range of –40°C to 85°C.
AVAILABLE OPTIONS
PACKAGED DEVICES
T
A
SMALL OUTLINE
(D)
TPS3307-18D
–40_C to 85_C
TPS3307-25D
TPS3307-33D
PowerPAD™
µ-SMALL OUTLINE
(DGN)
TPS3307-18DGN
TPS3307-25DGN
TPS3307-33DGN
FUNCTION/TRUTH TABLES
MR
L
H
H
H
H
H
H
H
H
†
X = Don’t care
SENSE1>V
IT1
X
†
0
0
0
0
1
1
1
1
SENSE2>V
IT2
X
†
0
0
1
1
0
0
1
1
SENSE3>V
IT3
X
0
1
0
1
0
1
0
1
RESET
L
L
L
L
L
L
L
L
H
RESET
H
H
H
H
H
H
H
H
L
MARKING
DGN PACKAGE
TIAAP
TIAAQ
TIAAR
CHIP FORM
(Y)
TPS3307-18Y
TPS3307-25Y
TPS3307-33Y
PowerPAD is a trademark of Texas Instruments Incorporated.
2
POST OFFICE BOX 655303 DALLAS, TEXAS 75265
•