Datasheet

TLC556, TLC556Y
DUAL LinCMOS TIMERS
SLFS047B – FEBRUARY 1984 – REVISED SEPTEMBER 1997
5
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified free-air temperature, V
DD
= 2 V for TLC556C, V
DD
= 3 V for
TLC556I
PARAMETER
TEST
T
A
†
TLC556C TLC556I
UNIT
PARAMETER
CONDITIONS
T
A
†
MIN TYP MAX MIN TYP MAX
UNIT
V
IT
In
p
ut threshold voltage
25°C 0.95 1.33 1.65 1.6 2 2.4
V
V
IT
Inp
u
t
threshold
v
oltage
Full range 0.85 1.75 1.5 2.5
V
Threshold current
25°C 10 10
p
A
Threshold
c
u
rrent
MAX 75 150
pA
V
(t i )
Trigger voltage
25°C 0.4 0.67 0.95 0.71 1 1.29
V
V
(trigger)
Trigger
v
oltage
Full range 0.3 1.05 0.61 1.39
V
I
(t i )
Trigger current
25°C 10 10
p
A
I
(trigger)
Trigger
c
u
rrent
MAX 75 150
pA
V
(t)
Reset voltage
25°C 0.4 1.1 1.5 0.4 1.1 1.5
V
V
(reset)
Reset
v
oltage
Full range 0.3 1.8 0.3 1.8
V
I
(t)
Reset current
25°C 10 10
p
A
I
(reset)
Reset
c
u
rrent
MAX 75 150
pA
Control voltage (open circuit) as
a percentage of supply voltage
MAX 66.7% 66.7%
Discharge switch on-state volt-
I
OL
=1mA
25°C 0.04 0.2 0.03 0.2
V
g
age
I
OL
=
1
mA
Full range 0.25 0.375
V
Discharge switch off-state cur-
25°C 0.1 0.1
nA
g
rent
MAX 0.5 120
nA
V
OH
High level out
p
ut voltage
I
OH
= 300 µA
25°C 1.5 1.9 1.5 1.9
V
V
OH
High
-
le
v
el
o
u
tp
u
t
v
oltage
I
OH
= –
300
µ
A
Full range 1.5 2.5
V
V
OL
Low level out
p
ut voltage
I
OL
=1mA
25°C 0.07 0.3 0.07 0.3
V
V
OL
Lo
w-
le
v
el
o
u
tp
u
t
v
oltage
I
OL
=
1
mA
Full range 0.35 0.4
V
I
DD
Su
pp
ly current
See Note 2
25°C 130 500 130 500
µA
I
DD
S
u
ppl
y
c
u
rrent
See
Note
2
Full range 800 1000
µ
A
†
Full range is 0°C to 70°C for TLC556C and –40°C to 85°C for TLC556I.
NOTE 2: These values apply for the expected operating configurations in which THRES is connected directly to DISCH or TRIG.