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74HC14 Datasheet
Hex inverting Schmitt trigger
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74HC14 pdf
NXP Semiconductors
74HC14; 74HCT14
Hex inverting Schmitt trigger
Table 9. Test data
Type
74HC14
74HCT14
Input
VI
VCC
3.0 V
tr, tf
6.0 ns
6.0 ns
13. Transfer characteristics
Load
CL
15 pF, 50 pF
15 pF, 50 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
Tamb = 25 C
Tamb = 40 C
to +85 C
Tamb = 40 C
to +125 C
Min Typ Max Min Max Min Max
74HC14
VT+ positive-going VCC = 2.0 V
threshold
voltage
VCC = 4.5 V
VCC = 6.0 V
VTnegative-going VCC = 2.0 V
threshold
voltage
VCC = 4.5 V
VCC = 6.0 V
VH
hysteresis
VCC = 2.0 V
voltage
VCC = 4.5 V
VCC = 6.0 V
74HCT14
0.7 1.18 1.5 0.7
1.5
0.7
1.5
1.7 2.38 3.15 1.7 3.15 1.7 3.15
2.1 3.14 4.2 2.1
4.2
2.1
4.2
0.3 0.52 0.9 0.3
0.9
0.3
0.9
0.9 1.4 2.0 0.9
2.0
0.9
2.0
1.2 1.89 2.6 1.2
2.6
1.2
2.6
0.2 0.66 1.0 0.2
1.0
0.2
1.0
0.4 0.98 1.4 0.4
1.4
0.4
1.4
0.6 1.25 1.6 0.6
1.6
0.6
1.6
VT+ positive-going VCC = 4.5 V
threshold
voltage
VCC = 5.5 V
1.2 1.41 1.9 1.2
1.9
1.2
1.9
1.4 1.59 2.1 1.4
2.1
1.4
2.1
VTnegative-going VCC = 4.5 V
threshold
voltage
VCC = 5.5 V
0.5 0.85 1.2 0.5
1.2
0.5
1.2
0.6 0.99 1.4 0.6
1.4
0.6
1.4
VH
hysteresis
VCC = 4.5 V
voltage
VCC = 5.5 V
0.4 0.56 -
0.4
-
0.4
-
0.4 0.6 -
0.4
-
0.4
-
Unit
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
14. Transfer characteristics waveforms
92
97
9,
97
9+
9+
97 97
Fig 8. Transfer characteristics
74HC_HCT14
Product data sheet
9,
PQD
92
PQD
Fig 9. Transfer characteristics definitions
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 19 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
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