Datasheet

Philips Semiconductors Product specification
74LVC14A
Hex inverting Schmitt-trigger with 5V
tolerant input
1998 Apr 28
5
TRANSFER CHARACTERISTICS
Voltages are referenced to GND (ground = 0 V).
T
amb
(°C) TEST CONDITIONS
SYMBOL PARAMETER
–40 TO +85
UNIT
V
CC
WAVEFORMS
MIN TYP
1
MAX
CC
(V)
WAVEFORMS
P iti i
– – 1.2 1.2
V
T+
Positive-going
threshold
1.1 – 2.0
V
2.7
Figures 1 and 2
threshold
1.1 – 2.0 2.7 to 3.6
Nti i
0 – – 1.2
V
T–
Negative-going
threshold
0.8 – 1.5
V
2.7
Figures 1 and 2
threshold
0.8 – 1.5 2.7 to 3.6
Ht i
– – – 1.2
V
H
Hysteresis
(V
T+
–
V
T
)
0.3 0.4 –
V
2.7
Figures 1, 2 and 3
(V
T+
V
T
-
)
0.3 0.45
*
– 2.7 to 3.6
NOTES:
1. All typical values are measured at T
amb
= 25°C
2. The V
IH
and V
IL
from the DC family characteristics are superseded by the V
T+
and V
T-
.
TRANSFER CHARACTERISTIC WAVEFORMS
SV00427
V
H
V
T+
V
T–
V
O
V
I
Figure 1. Transfer characteristic.
SV00428
V
H
V
T–
V
T+
V
O
V
I
Figure 2. Definition of
V
T
, V
T-
and V
H
;
where V
T+
and V
T-
are between limits of 20% and 70%
0
0
1
2
3
4
5
I
CC
(mA)
0.6 1.81.2 2.4
V
in
(V)
3.0
SV00444
Figure 3. Typical 74LVC14 transfer characteristics; V
CC
= 3.3 V.