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TPS3305-33Y Datasheet

  • TPS3305-33Y

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  • 13頁

  • TI

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TPS3305-18, TPS3305-25, TPS3305-33
DUAL PROCESSOR SUPERVISORS
SLVS198 鈥?DECEMBER 1998
D
D
D
D
D
D
D
D
D
Dual Supervisory Circuits for DSP and
Processor-Based Systems
Power-On Reset Generator with Fixed
Delay Time of 200 ms, no External
Capacitor Needed
Watchdog Timer Retriggers the RESET
Output at SENSEn
鈮?/div>
V
IT+
Temperature-Compensated Voltage
Reference
Maximum Supply Current of 40
碌A(chǔ)
Supply Voltage Range . . . 2.7 V to 6 V
Defined RESET Output from V
DD
鈮?/div>
1.1 V
MSOP-8 and SO-8 Packages
Temperature Range . . . 鈥?40擄C to 85擄C
D OR DGN PACKAGE
(TOP VIEW)
SENSE1
SENSE2
WDI
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 TPS3305 family, and a schematic diagram for a DSP-based
system application. This application uses TI part numbers TPS3305鈥?5, TPS7133, TPS71025, and
TMS320VC549.
5 V 鈥?10 V
VI
TPS7133
GND
VO
3.3 V
VI
GND
TPS71025
VO
2.5 V
鈥?/div>
DSP
DVDD
CVDD
TMS320VC549
RESET
XF
GND
VDD
External
Reset
Source
SENSE 1
MR
SENSE 2
TPS3305鈥?5
RESET
WDI
GND
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
鈥?/div>
Applications using DSPs, Microcontrollers
or Microprocessors
Industrial Equipment
Programmable Controls
Automotive Systems
Portable/Battery Powered Equipment
Intelligent Instruments
Wireless Communication Systems
Notebook/Desktop Computers
Figure 1. Applications Using the TPS3305 Family
description
The TPS3305 family is a series of micropower supply voltage supervisors designed for circuit initialization,
primarily in DSP and processor-based systems, which require two supply voltages.
The product spectrum of the TPS3305 is designed for monitoring two independent supply voltages of
3.3 V/1.8 V, 3.3 V/2.5 V or 3.3 V /5 V.
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.
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
漏
1998, Texas Instruments Incorporated
POST OFFICE BOX 655303
鈥?/div>
DALLAS, TEXAS 75265
1

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