Datasheet

TL7757, TL7757Y
SUPPLY VOLTAGE SUPERVISOR
AND PRECISION VOLTAGE DETECTOR
SLVS041D – SEPTEMBER 1991 – REVISED AUGUST 1995
12
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.