Datasheet

74HC_HCT1G14 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2012. All rights reserved.
Product data sheet Rev. 6 — 27 December 2012 6 of 16
NXP Semiconductors
74HC1G14; 74HCT1G14
Inverting Schmitt trigger
13. Waveforms
Measurement points are given in Table 9.
Fig 5. The input (A) to output (Y) propagation delays
mna033
A input
Y output
t
PHL
t
PLH
V
M
V
M
Table 9. Measurement points
Type number Input Output
V
I
V
M
V
M
74HC1G14 GND to V
CC
0.5  V
CC
0.5  V
CC
74HCT1G14 GND to 3.0 V 1.5 V 0.5  V
CC
Test data is given in Table 8. Definitions for test circuit:
C
L
= Load capacitance including jig and probe capacitance.
R
T
= Termination resistance should be equal to output impedance Z
o
of the pulse generator.
Fig 6. Load circuitry for switching times
V
CC
V
I
V
O
mna034
DUT
C
L
50 pF
R
T
PULSE
GENERATOR