Datasheet

TL7757
SUPPLY-VOLTAGE SUPERVISOR
AND PRECISION VOLTAGE DETECTOR
SLVS041I − SEPTEMBER 1991 − REVISED AUGUST 2003
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
†
Figure 10
4.55
4.54
4.52
4.51
4.5
4.59
4.53
−100 − 50 0 50
4.57
4.56
4.58
INPUT THRESHOLD VOLTAGE
(NEGATIVE-GOING V
CC
)
vs
FREE-AIR TEMPERATURE
4.6
100 150
R
L
= 0
T
A
− Free-Air Temperature − °C
VIT − Input Threshold Voltage − VV
IT−
900
850
800
750
−100 − 50 0 100
950
POWER-UP RESET VOLTAGE
vs
FREE-AIR TEMPERATURE
1000
150
50
700
650
600
Vres − Power-Up Reset Voltage − mV
V
res
T
A
− Free-Air Temperature − °C
R
L
= 2.2 kΩ
Figure 11
.5
0
− 0.5
−1
0 0.5 1
1
1.5
POWER-UP RESET VOLTAGE
AND SUPPLY VOLTAGE
vs
TIME
2
1.5 2 2.5
3
V
CC
t − Time − µs
T
A
= 25°C
R
L
= 2.2 kΩ
RESET
, − RESET Voltage and Supply Voltage − V
V
res
V
CC
Figure 12
2
1
0
−1
3
4
PROPAGATION DELAY TIME
5
6
024 6 810121416
T
A
= 25°C
R
L
= 2.2 kΩ
V
CC
RESET
t − Time − µs
18
Voltage − V
Figure 13
†
Data at high and low temperatures are applicable only within the rated operating free-air temperature ranges of the various devices.