Datasheet
TLC556, TLC556Y
DUAL LinCMOS TIMERS
SLFS047B – FEBRUARY 1984 – REVISED SEPTEMBER 1997
7
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics at specified free-air temperature, V
DD
= 15 V
PARAMETER
TEST
T
A
†
TLC556C TLC556I TLC556M
UNIT
PARAMETER
CONDITIONS
T
A
†
MIN TYP MAX MIN TYP MAX MIN TYP MAX
UNIT
V
IT
In
p
ut threshold voltage
25°C
9.45 10 10.55 9.45 10 10.55 9.45 10 10.55
V
V
IT
Input
threshold
voltage
Full range 9.35 10.65 9.35 10.65 9.35 10.65
V
Threshold current
25°C
10 10 10
p
A
Threshold
current
MAX 75 150 5000
pA
V
(t i )
Trigger voltage
25°C
4.65 5 5.35 4.65 5 5.35 4.65 5 5.35
V
V
(trigger)
Trigger
voltage
Full range 4.55 5.45 4.55 5.45 4.55 5.45
V
I
(t i )
Trigger current
25°C
10 10 10
p
A
I
(trigger)
Trigger
current
MAX 75 150 5000
pA
V
(t)
Reset voltage
25°C
0.4 1.1 1.5 0.4 1.1 1.5 0.4 1.1 1.5
V
V
(reset)
Reset
voltage
Full range 0.3 1.8 0.3 1.8 0.3 1.8
V
I
(t)
Reset current
25°C
10 10 10
p
A
I
(reset)
Reset
current
MAX 75 150 5000
pA
Control voltage (open
circuit) as a percent-
age of supply voltage
MAX 66.7% 66.7% 66.7%
Discharge switch on-
I
OL
= 100 mA
25°C
0.8 1.7 0.8 1.7 0.8 1.7
V
g
state voltage
I
OL
=
100
mA
Full range 1.8 1.8 1.8
V
Discharge switch off-
25°C
0.1 0.1 0.1
nA
g
state current
MAX 0.5 2 120
nA
I
OH
=10mA
25°C
12.5 14.2 12.5 14.2 12.5 14.2
I
OH
= –
10
mA
Full range 12.5 12.5 12.5
V
OH
High-level output
I
OH
=5mA
25°C
13.5 14.6 13.5 14.6 13.5 14.6
V
V
OH
g
voltage
I
OH
= –
5
mA
Full range 13.5 13.5 13.5
V
I
OH
=1mA
25°C
14.2 14.9 14.2 14.9 14.2 14.9
I
OH
= –
1
mA
Full range 14.2 14.2 14.2
I
OL
= 100 mA
25°C
1.28 3.2 1.28 3.2 1.28 3.2
I
OL
=
100
mA
Full range 3.6 3.7 3.8
V
OL
Low-level output
I
OL
=50mA
25°C
0.63 1 0.63 1 0.63 1
V
V
OL
voltage
I
OL
=
50
mA
Full range 1.3 1.4 1.5
V
I
OL
=10mA
25°C
0.12 0.3 0.12 0.3 0.12 0.3
I
OL
=
10
mA
Full range 0.4 0.4 0.45
I
DD
Su
pp
ly current
See Note 2
25°C
0.72 1.2 0.72 1.2 0.72 1.2
mA
I
DD
Supply
current
See
Note
2
Full range 1.6 1.8 2
mA
†
Full range is 0
°C to 70°C for TLC556C, –40°C to 85°C for TLC556I, and –55°C to 125°C for TLC556M.
NOTE 2: These values apply for the expected operating configurations in which THRES is connected directly to DISCH or TRIG.