Datasheet



    
SLVS184C − NOVEMBER 1998 − REVISED DECEMBER 2005
3
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
Function Tables
TRUTH TABLE, TPS3705
MR
V
DD
>V
IT
RESET
TYPICAL
DELAY
H→L 1 H→L 30 ns
L→H 1L→H 200 ms
H 1→0H→L 3 µs
H 0→1 L→H 200 ms
TRUTH TABLE, TPS3707
MR
V
DD
>V
IT
RESET
RESET
TYPICAL
DELAY
H→L 1 H→L L→H 30 ns
L→H 1L→H H→L 200 ms
H 1→0H→L L→H3 µs
H 0→1 L→H H→L 200 ms
TRUTH TABLE, TPS370x
PFI>V
IT
PFO
TYPICAL
DELAY
0→1 L→H 0.5 µs
1→0 H→L 0.5 µs
functional block diagram
Reset
Logic + Timer
_
+
_
+
R1
R2
14 kΩ
Reference
Voltage
of 1.25 V
Watchdog
Logic + Timer
Oscillator
40 kΩ
Transition
Detection
V
DD
MR
GND
PFI
WDI
RESET
RESET
PFO
WDO
Only
TPS3705
Only
TPS3707
Only
TPS3705
TPS3705
TPS3707