74HC_HCT3G14 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2013. All rights reserved.
Product data sheet Rev. 5 — 9 December 2013 9 of 21
NXP Semiconductors 74HC3G14; 74HCT3G14
Triple inverting Schmitt trigger
12. Dynamic characteristics
[1] t
pd
is the same as t
PLH
and t
PHL
[2] t
t
is the same as t
TLH
and t
THL
[3] C
PD
is used to determine the dynamic power dissipation (P
D
in W).
P
D
=C
PD
V
CC
2
f
i
N+(C
L
V
CC
2
f
o
) where:
f
i
= input frequency in MHz;
f
o
= output frequency in MHz;
C
L
= output load capacitance in pF;
V
CC
= supply voltage in V;
N = number of inputs switching;
(C
L
V
CC
2
f
o
) = sum of the outputs.
Table 9. Dynamic characteristics
Voltages are referenced to GND (ground = 0 V); for test circuit see Figure 11.
Symbol Parameter Conditions 25 C 40 C to +125 C Unit
Min Typ Max Min Max
(85 C)
Max
(125 C)
74HC3G14
t
pd
propagation delay nA to nY; see Figure 10
[1]
V
CC
= 2.0 V - 53 125 - 155 190 ns
V
CC
= 4.5 V - 16 25 - 31 38 ns
V
CC
= 6.0 V - 13 21 - 26 32 ns
t
t
transition time nY; see Figure 10
[2]
V
CC
= 2.0 V - 20 75 - 95 110 ns
V
CC
= 4.5 V - 7 15 - 19 22 ns
V
CC
= 6.0 V - 5 13 - 16 19 ns
C
PD
power dissipation
capacitance
V
I
= GND to V
CC
[3]
-10- - - -pF
74HCT3G14
t
pd
propagation delay nA to nY; see Figure 10
[1]
V
CC
= 4.5 V - 21 32 - 40 48 ns
t
t
transition time nY; see Figure 10
[2]
V
CC
= 4.5 V - 6 15 - 19 22 ns
C
PD
power dissipation
capacitance
V
I
= GND to V
CC
1.5 V
[3]
-10- - - -pF
