Datasheet
SCLS555 − JUNE 2004
www.ti.com
6
electrical characteristics over recommended operating free-air temperature range (unless
otherwise noted)
PARAMETER TEST CONDITIONS
V
CC1
V
CC2
MIN TYP MAX UNIT
V
T+
Positive-going input threshold
All inputs
3.3 V 3.3 V 2.31
V
T+
Positive-going input threshold
voltage
All inputs
5 V 5 V 3.5
V
V
T−
Negative-going input threshold
All inputs
3.3 V 3.3 V 0.99
V
T−
Negative-going input threshold
voltage
All inputs
5 V 5 V 1.5
V
∆V
T
Hysteresis
All inputs
3.3 V 3.3 V 0.33 1.32
V
T
Hysteresis
(V
T+
− V
T−
)
All inputs
5 V 5 V 0.5 2
V
I
OH
= −2 mA 3 V 3 V 2.38
Yn
I
OH
= −8 mA 4.5 V 4.5 V 3.8
V
OH
Yn
I
OH
= −24 mA 4.5 V 12 V 11
V
V
OH
SOUT
I
OH
= −4 mA 3 V 3 V 2.38
V
SOUT
I
OH
= −8 mA 4.5 V 4.5 V 3.8
I
OL
= 2 mA (OUTSEL = H) 3 V 3 V 0.44
Yn
I
OL
= 8 mA (OUTSEL = H) 4.5 V 4.5 V 0.44
V
OL
Yn
I
OL
= 40 mA (OUTSEL = L) 4.5 V 4.5 V 0.5
V
V
OL
SOUT
I
OL
= 4 mA 3 V 3 V 0.44
V
SOUT
I
OL
= 8 mA 4.5 V 4.5 V 0.44
I
I
V
I
= 5.5 V or GND 0 to 5.5 V ±1 µA
I
OZ
V
O
= V
CC
or GND (OUTSEL = H) 5.5 V 5.5 V ±5 µA
I
OH
V
O
= 12 V (OUTSEL = L) 5.5 V 5.5 V 5 µA
I
CC
V
I
= V
CC
or GND, I
O
= 0
OUTSEL = H
5.5 V
5.5 V
5
mA
I
CC
V
I
= V
CC
or GND, I
O
= 0
OUTSEL = L
5.5 V
5.5 V
20
mA
I
off
(except SOUT) V
I
or V
O
= 0 to 5.5 V, V
CC
= 0 0 0 ±50 µA
C
i
V
I
= V
CC
or GND 5 V 5 V 5 pF
switching characteristics over recommended operating free-air temperature range,
V
CC1
= V
CC2
= 3.3 V ± 0.3 V (unless otherwise noted) (see Figures 1 and 2)
PARAMETER
FROM
TO
LOAD
T
A
= 25°C
MIN
MAX
UNIT
PARAMETER
FROM
(INPUT)
TO
(OUTPUT)
LOAD
CAPACITANCE
MIN TYP MAX
MIN
MAX
UNIT
D7 Y Pw/2
(1)
t
pd
D7 SOUT Pw/2
(1)
ns
t
pd
RESET Y 200
ns
OE
(2)
Y
C
L
= 50 pF
200
t
en
OE
(3)
Y
C
L
= 50 pF
200 ns
t
dis
OE
(3)
Y 200 ns
t
w
SOUT Pw
(4)
ns
Data rate
2 24 Kbps
(1)
The t
pd
is dependent on the data pulse width (Pw), and Y outputs are changed after one-half of Pw, because the internal clock is synchronized
at the middle of the data pulse. Not tested, but specified by design.
(2)
When outputs are open collector (OUTSEL = L)
(3)
When outputs are push-pull (OUTSEL = H)
(4)
SOUT goes low when the data is received correctly and maintains a low level for one data-pulse period. Not tested, but specified by design.