TPS3705-30, TPS3705-33, TPS3705-50
TPS3707-25, TPS3707-30, TPS3707-33, TPS3707-50
PROCESSOR SUPERVISORY CIRCUITS WITH POWER-FAIL
SLVS184B – NOVEMBER 1998 – REVISED JANUARY 1999
TPS3705 . . . D PACKAGE
(TOP VIEW)
features
Power-On Reset Generator with Fixed
Delay Time of 200 ms, no External
Capacitor Needed
MR
WDO
RESET
WDI
1
2
3
4
8
7
6
5
V
DD
GND
Precision Supply Voltage Monitor 2.5 V, 3 V,
3.3 V, and 5 V
PFI
PFO
Pin-For-Pin Compatible with the MAX705
through MAX708 Series
TPS3707 . . . D PACKAGE
(TOP VIEW)
Integrated Watchdog Timer (TPS3705 only)
Voltage Monitor for Power-Fail or
Low-Battery Warning
MR
RESET
RESET
NC
1
2
3
4
8
7
6
5
V
DD
GND
Maximum Supply Current of 50 µA
MSOP-8 and SO-8 Packages
PFI
PFO
Temperature Range . . . –40°C to 85°C
NC – No internal connection
TPS3705 . . . DGN PACKAGE
(TOP VIEW)
typical applications
Designs Using DSPs, Microcontrollers or
Microprocessors
RESET
WDO
MR
WDI
PFO
PFI
1
2
3
4
8
7
6
5
Industrial Equipment
Programmable Controls
V
GND
DD
Automotive Systems
Portable/Battery Powered Equipment
Intelligent Instruments
TPS3707 . . . DGN PACKAGE
(TOP VIEW)
Wireless Communication Systems
Notebook/Desktop Computers
RESET
RESET
MR
NC
1
2
3
4
8
7
6
5
PFO
PFI
12 V
5 V
V
GND
DD
NC – No internal connection
V
DD
V
DD
PFO
MSP430P112
RESET/NMI
TPS3705–50
100 nF
MR
PFI
RESET
910 kΩ
WDO
WDI
I/O
I/O
120 kΩ
GND
GND
Figure 1. Typical MSP430 Application
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.
Copyright 1999, Texas Instruments Incorporated
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.
1
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