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74HC14 Datasheet

Hex inverting Schmitt trigger

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74HC14 pdf
NXP Semiconductors
12. Waveforms
74HC14; 74HCT14
Hex inverting Schmitt trigger
9,
Q$LQSXW
*1'
92+
Q<RXWSXW
92/
90
W 3+/
90
W 7+/
90
90

W 3/+

W 7/+
PQD
Fig 6.
Measurement points are given in Table 8.
VOL and VOH are typical voltage output levels that occur with the output load.
Input to output propagation delays
Table 8. Measurement points
Type
Input
74HC14
74HCT14
VM
0.5VCC
1.3 V
Output
VM
0.5VCC
1.3 V
VX
0.1VCC
0.1VCC
VY
0.9VCC
0.9VCC
9, 
QHJDWLYH
SXOVH
*1'
9,
SRVLWLYH
SXOVH
*1' 
90

WI
WU

90
* 9,
57
W:
W:
9&&
'87
90
WU
WI
90
92
&/
DDK

Fig 7.
Test data is given in Table 9.
Definitions test circuit:
RT = termination resistance should be equal to output impedance Zo of the pulse generator.
CL = load capacitance including jig and probe capacitance.
Test circuit for measuring switching times
74HC_HCT14
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 7 — 19 November 2015
© NXP Semiconductors N.V. 2015. All rights reserved.
7 of 20
NXP
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