Datasheet
TL7757
SUPPLY-VOLTAGE SUPERVISOR
AND PRECISION VOLTAGE DETECTOR
SLVS041I − SEPTEMBER 1991 − REVISED AUGUST 2003
4
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified free-air temperature
PARAMETER
TEST CONDITIONS
T
TL7757I
UNIT
PARAMETER TEST CONDITIONS
T
A
MIN TYP MAX
UNIT
V
Negative going input threshold voltage at V
25°C 4.43 4.55 4.67
V
V
IT−
Negative-going input threshold voltage at V
CC
−40°C to 85°C 4.4 4.7
V
V
†
Hysteresis at V
25°C 40 50 60
mV
V
hys
†
Hysteresis at V
CC
−40°C to 85°C 30 70
mV
V
Low level output voltage
I 20 mA
V 43V
25°C 0.4 0.8
V
V
OL
Low-level output voltage I
OL
= 20 mA, V
CC
= 4.3 V
−40°C to 85°C
0.8
V
I
High level output current
V
CC
= 7 V, V
O
H
= 15 V,
25°C 1
A
I
OH
High-level output current
V
CC
=
7
V
,
See Figure 1
V
OH
=
15
V
,
−40°C to 85°C
1
µA
V
‡
Power up reset voltage
R
L
= 2.2 kΩ,
25°C 0.8 1
V
V
res
‡
Power-up reset voltage
R
L
=
2
.
2
kΩ
,
V
CC
slew rate ≤ 5 V/µs
−40°C to 85°C 1.2
V
V 43V
25°C 1400 2000
I
CC
Supply current
V
CC
= 4.3 V
−40°C to 85°C 2100
µA
CC
pp y
V
CC
= 5.5 V −40°C to 85°C 40
µ
†
This is the difference between positive-going input threshold voltage, V
IT+
, and negative-going input threshold voltage, V
IT−
.
‡
This is the lowest voltage at which RESET becomes active.
switching characteristics at specified free-air temperature
PARAMETER
TEST CONDITIONS
T
TL7757I
UNIT
PARAMETER TEST CONDITIONS
T
A
MIN TYP MAX
UNIT
t
Propagation delay time low to high level output
V
CC
slew rate ≤ 5 V/
µ
s,
25°C 3.4 5
s
t
PLH
Propagation delay time, low-to-high-level output
V
CC
slew
rate
≤
5
V/µs
,
See Figures 2 and 3
−40°C to 85°C 5
µs
t
Propagation delay time high to low level output
See Figures 2 and 3
25°C 2 5
s
t
PHL
Propagation delay time, high-to-low-level output See Figures 2 and 3
−40°C to 85°C 5
µs
t
Rise time
V
CC
slew rate ≤ 5 V/
µ
s,
25°C 0.4 1
s
t
r
Rise time
V
CC
slew
rate
≤
5
V/µs
,
See Figures 2 and 3
−40°C to 85°C 1
µs
t
Fall time
See Figures 2 and 3
25°C 0.05 1
s
t
f
Fall time See Figures 2 and 3
−40°C to 85°C 1
µs
t
Minimum pulse duration at V
CC
for output
25°C 5
µs
t
w(min)
Minimum
pulse
duration
at
V
CC
for
output
response
−40°C to 85°C 5
µs