74VHCT14 データシートの表示（PDF） - Nexperia B.V. All rights reserved
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74VHCT14 Datasheet PDF : 16 Pages
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Nexperia
74VHC14; 74VHCT14
Hex inverting Schmitt trigger
Table 9. Test data
Type
74VHC14
74VHCT14
Input
VI
VCC
3.0 V
tr, tf
≤ 3.0 ns
≤ 3.0 ns
12. Transfer characteristics
Load
CL
50 pF, 15 pF
50 pF, 15 pF
Test
tPLH, tPHL
tPLH, tPHL
Table 10. Transfer characteristics
At recommended operating conditions; voltages are referenced to GND (ground = 0 V); see Figure 8 and Figure 9.
Symbol Parameter Conditions
25 °C
−40 °C to +85 °C −40 °C to +125 °C Unit
Min Typ Max Min
Max
Min
Max
74VHC14
VT+
positive-going VCC = 3.0 V
threshold
voltage
VCC = 4.5 V
VCC = 5.5 V
VT−
negative-going VCC = 3.0 V
threshold
voltage
VCC = 4.5 V
VCC = 5.5 V
VH
hysteresis
VCC = 3.0 V
voltage
VCC = 4.5 V
VCC = 5.5 V
74VHCT14
-
- 2.2
-
2.2
-
2.2 V
-
- 3.15 -
3.15
-
3.15 V
-
- 3.85 -
3.85
-
3.85 V
0.9 -
-
0.9
-
0.9
-
V
1.35 -
- 1.35
-
1.35
-
V
1.65 -
- 1.65
-
1.65
-
V
0.3 - 1.2 0.3
1.2
0.25
1.2 V
0.4 - 1.4 0.4
1.4
0.35
1.4 V
0.5 - 1.6 0.5
1.6
0.45
1.6 V
VT+
positive-going VCC = 4.5 V
threshold
voltage
VCC = 5.5 V
-
- 1.9
-
1.9
-
1.9 V
-
- 2.1
-
2.1
-
2.1 V
VT−
negative-going VCC = 4.5 V
threshold
voltage
VCC = 5.5 V
0.5 -
-
0.5
-
0.5
-
V
0.6 -
-
0.6
-
0.6
-
V
VH
hysteresis
VCC = 4.5 V
voltage
VCC = 5.5 V
0.4 - 1.4 0.4
1.4
0.35
1.4 V
0.4 - 1.5 0.4
1.5
0.35
1.5 V
13. Transfer characteristics waveforms
VO
VT+
VI
VH
VT−
VH
VT−
VT+
Fig 8. Transfer characteristics
VI
mna207
VO
mna208
Fig 9. Transfer characteristics definitions
74VHC_VHCT14_1
Product data sheet
Rev. 01 — 17 August 2009
© Nexperia B.V. 2017. All rights reserved
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