74HCT14 Philips, 74HCT14 Datasheet - Page 5

• Manufacturer Part Number: 74HCT14
• Description: Hex inverting Schmitt trigger
• Manufacturer: Philips

Philips Semiconductors
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
given below.
Output capability: standard
I
Note to HCT types
The value of additional quiescent supply current ( I
To determine I
Transfer characteristics for 74HCT
Voltages are referenced to GND (ground = 0 V)
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
September 1993
CC
INPUT
nA
SYMBOL PARAMETER
V
V
V
SYMBOL PARAMETER
t
t
PHL
THL
T
T
H
Hex inverting Schmitt trigger
+
category: SSI
/ t
/ t
TLH
PLH
positive-going
threshold
negative-going
threshold
hysteresis
(V
propagation delay
output transition
time
r
= t
nA, to nY
UNIT LOAD COEFFICIENT
0.3
T
CC
+ V
f
= 6 ns; C
per input, multiply this value by the unit load coefficient shown in the table below.
T
)
L
= 50 pF
“74HC/HCT/HCU/HCMOS Logic Family Specifications”
1.2
1.4
0.5
0.6
0.4
0.4
min.
min.
1.41
1.59
0.85
0.99
0.56
0.60
20
7
typ.
typ.
+25
+25
1.9
2.1
1.2
1.4
34
15
max.
max.
CC
) for a unit load of 1 is given in the family specifications.
T
T
74HCT
74HCT
amb
1.2
1.4
0.5
0.6
0.4
0.4
amb
min.
min.
5
40 to +85
40 to +85
( C)
( C)
1.9
2.1
1.2
1.4
43
19
max.
max.
1.2
1.4
0.5
0.6
0.4
0.4
min.
min.
40 to +125
40 to +125
1.9
2.1
1.2
1.4
51
22
max.
max.
. Transfer characteristics are
V
V
V
ns
ns
UNIT
UNIT
74HC/HCT14
4.5
5.5
4.5
5.5
4.5
5.5
4.5
4.5
V
V
TEST CONDITIONS
TEST CONDITIONS
(V)
(V)
Product specification
CC
CC
WAVEFORMS
Figs 6 and 7
Figs 6 and 7
Figs 6 and 7
WAVEFORMS
Fig.8
Fig.8