TPS3705-30, TPS3705-33, TPS3705-50
TPS3707-25, TPS3707-30, TPS3707-33, TPS3707-50
PROCESSOR SUPERVISORY CIRCUITS WITH POWER-FAIL
SLVS184B 鈥?NOVEMBER 1998 鈥?REVISED JANUARY 1999
features
D
D
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D
D
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D
12 V
TPS3705 . . . D PACKAGE
(TOP VIEW)
Power-On Reset Generator with Fixed
Delay Time of 200 ms, no External
Capacitor Needed
Precision Supply Voltage Monitor 2.5 V, 3 V,
3.3 V, and 5 V
Pin-For-Pin Compatible with the MAX705
through MAX708 Series
Integrated Watchdog Timer (TPS3705 only)
Voltage Monitor for Power-Fail or
Low-Battery Warning
Maximum Supply Current of 50
碌A
MSOP-8 and SO-8 Packages
Temperature Range . . . 鈥?0擄C to 85擄C
MR
V
DD
GND
PFI
1
2
3
4
8
7
6
5
WDO
RESET
WDI
PFO
TPS3707 . . . D PACKAGE
(TOP VIEW)
MR
V
DD
GND
PFI
1
2
3
4
8
7
6
5
RESET
RESET
NC
PFO
NC 鈥?No internal connection
TPS3705 . . . DGN PACKAGE
(TOP VIEW)
typical applications
Designs Using DSPs, Microcontrollers or
Microprocessors
Industrial Equipment
Programmable Controls
Automotive Systems
Portable/Battery Powered Equipment
Intelligent Instruments
Wireless Communication Systems
Notebook/Desktop Computers
5V
RESET
WDO
MR
V
DD
1
2
3
4
8
7
6
5
WDI
PFO
PFI
GND
TPS3707 . . . DGN PACKAGE
(TOP VIEW)
RESET
RESET
MR
V
DD
1
2
3
4
8
7
6
5
NC
PFO
PFI
GND
NC 鈥?No internal connection
VDD
VDD
100 nF
MSP430P112
RESET/NMI
I/O
I/O
GND
PFO
TPS3705鈥?0
MR