MAX705–MAX708/MAX813L
Low-Cost, µP Supervisory Circuits
__________________________________________Typical Operating Characteristics
MAX705/MAX707
RESET OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
POWER-FAIL COMPARATOR
DE-ASSERTION RESPONSE TIME
MAX705/MAX707
RESET RESPONSE TIME
+5V
+5V
+5V
PFI
V
T
= +5V
CC
T
= +25°C
+5V
CC
A
= +25°C
A
PFO
V
V
+4V
CC
0V
1kΩ
30pF
+3V
T
= +25°C
PFO
A
+1.25V
+5V
V
CC
V
0V
V
V
CC
CC
CC
10kΩ
RESET
2kΩ
RESET
330pF
+1.30V
RESET
GND
RESET
GND
RESET
0V
RESET
30pF
PFI
+1.20V
0V
400ns/div
500ms/div
2µs/div
MAX707
RESET, RESET DE-ASSERTION
POWER-FAIL COMPARATOR
ASSERTION RESPONSE TIME
MAX707
RESET, RESET ASSERTION
V
T
= V
RT
= +25°C
V
T
= V
RT
= +25°C
CC
A
CC
A
+5V
+5V
+5V
+5V
PFO
PFI
1kΩ
PFO
RESET
RESET
V
RESET
RESET
CC
10kΩ
0V
0V
RESET
RESET
GND
V
CC
30pF
10kΩ
10kΩ
330pF
0V
+1.25V
RESET
RESET
GND
330pF
+5V
+5V
+1.30V
PFI
10kΩ
330pF
V
T
= +5V
CC
330pF
= +25°C
A
+1.20V
0V
0V
400ns/div
400ns/div
400ns/div
MAX707/MAX708/MAX813L
RESET OUTPUT VOLTAGE
vs. SUPPLY VOLTAGE
MAX813L
RESET RESPONSE TIME
+5V
+5V
T
= +25°C
+5V
A
V
V
+4V
+4V
CC
CC
V
CC
RESET
GND
10kΩ
V
330pF
CC
0V
0V
0V
RESET
GND
10kΩ
330pF
RESET
0V
500ms/div
2µs/div
4
Maxim Integrated
ROCHESTER [ Rochester Electronics ]
