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74HCT14 Arkusz danych(PDF) 4 Page - NXP Semiconductors

Numer części 74HCT14
Szczegółowy opis  Hex inverting Schmitt trigger
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Producent  PHILIPS [NXP Semiconductors]
Strona internetowa  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

74HCT14 Arkusz danych(HTML) 4 Page - NXP Semiconductors

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September 1993
4
Philips Semiconductors
Product specification
Hex inverting Schmitt trigger
74HC/HCT14
DC CHARACTERISTICS FOR 74HC
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”. Transfer characteristics are
given below.
Output capability: standard
ICC category: SSI
Transfer characteristics for 74HC
Voltages are referenced to GND (ground = 0 V)
AC CHARACTERISTICS FOR 74HC
GND = 0 V; tf = tf = 6 ns; CL = 50 pF
SYMBOL
PARAMETER
Tamb (°C)
UNIT
TEST CONDITIONS
74HC
VCC
(V)
WAVEFORMS
+25
−40 to +85
−40 to +125
min.
typ.
max.
min.
max.
min.
max.
VT+
positive-going
threshold
0.7
1.7
2.1
1.18
2.38
3.14
1.5
3.15
4.2
0.7
1.7
2.1
1.5
3.15
4.2
0.7
1.7
2.1
1.5
3.15
4.2
V
2.0
4.5
6.0
Figs 6 and 7
VT
negative-going
threshold
0.3
0.9
1.2
0.52
1.40
1.89
0.90
2.00
2.60
0.3
0.90
1.20
0.90
2.00
2.60
0.30
0.90
1.2
0.90
2.00
2.60
V
2.0
4.5
6.0
Figs 6 and 7
VH
hysteresis
(VT+ − VT−)
0.2
0.4
0.6
0.66
0.98
1.25
1.0
1.4
1.6
0.2
0.4
0.6
1.0
1.4
1.6
0.2
0.4
0.6
1.0
1.4
1.6
V
2.0
4.5
6.0
Figs 6 and 7
SYMBOL
PARAMETER
Tamb (°C)
UNIT
TEST CONDITIONS
74HC
VCC
(V)
WAVEFORMS
+25
−40 to +85
−40 to +125
min.
typ.
max.
min.
max.
min.
max.
tPHL/ tPLH
propagation delay
nA to nY
41
15
12
125
25
21
155
31
26
190
38
32
ns
2.0
4.5
6.0
Fig.8
tTHL/ tTLH
output transition
time
19
7
6
75
15
13
95
19
15
110
22
19
ns
2.0
4.5
6.0
Fig.8


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