Philips Semiconductors
Product specification
Hex inverting Schmitt trigger
Type 74HCT
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
TEST CONDITIONS
SYMBOL
T
amb
= 25
°C;
note 1
t
PHL
/t
PLH
t
THL
/t
TLH
propagation delay nA to nY
output transition time
see Fig.9
see Fig.9
4.5
4.5
−
−
PARAMETER
WAVEFORMS
V
CC
(V)
MIN.
74HC14; 74HCT14
TYP.
MAX.
UNIT
20
7
−
−
−
−
34
15
−
−
ns
ns
T
amb
=
−40
to +85
°C
t
PHL
/t
PLH
t
THL
/t
TLH
propagation delay nA to nY
output transition time
see Fig.9
see Fig.9
4.5
4.5
43
19
−
−
ns
ns
T
amb
=
−40
to +125
°C
t
PHL
/t
PLH
t
THL
/t
TLH
Note
1. All typical values are measured at T
amb
= 25
°C.
TRANSFER CHARACTERISTIC WAVEFORMS
propagation delay nA to nY
output transition time
see Fig.9
see Fig.9
4.5
4.5
51
22
ns
ns
VO
handbook, halfpage
VI
VT+
VT−
VH
VH
VT−
VT+
VI
MNA844
VO
MNA845
V
T+
and V
T−
are between limits of 20% and 70%.
Fig.7 Transfer characteristic.
Fig.8 The definitions of V
T+
, V
T−
and V
H
.
2003 Oct 30
13
PHILIPS [ NXP SEMICONDUCTORS ]
