Datasheet

TL7757, TL7757Y
SUPPLY VOLTAGE SUPERVISOR
AND PRECISION VOLTAGE DETECTOR
SLVS041D – SEPTEMBER 1991 – REVISED AUGUST 1995
8
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at T
A
= 25°C
PARAMETER
TEST CONDITIONS
TL7757Y
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP MAX
UNIT
V
IT–
Negative-going input threshold voltage at V
CC
4.55 V
V
hys
†
Hysteresis at V
CC
50 mV
V
OL
Low-level output voltage I
OL
= 20 mA, V
CC
= 4.3 V 0.4 V
I
OH
High-level output current V
CC
= 7 V, V
OH
= 15 V, See Figure 1 µA
V
res
‡
Power-up reset voltage R
L
= 2.2 kΩ, V
CC
slew rate ≤ 5 V/µs 0.8 V
I
CC
Su
pp
ly current
V
CC
= 4.3 V 1400
µA
I
CC
S
upp
l
y curren
t
V
CC
= 5.5 V
µ
A
†
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 T
A
= 25°C
PARAMETER
TEST CONDITIONS
TL7757Y
UNIT
PARAMETER
TEST
CONDITIONS
MIN TYP MAX
UNIT
t
PLH
Propagation delay time, low-to-high-level output
V
CC
slew rate ≤ 5 V/µs,
See Figures 2 and 3
3.4 µs
t
PHL
Propagation delay time, high-to-low-level output See Figures 2 and 3 2 µs
t
r
Rise time
V
CC
slew rate ≤ 5 V/µs,
See Figures 2 and 3
0.4 µs
t
f
Fall time See Figures 2 and 3 0.05 µs