Philips Semiconductors
Product specification
Quad 2-input NAND Schmitt trigger
DC CHARACTERISTICS FOR 74HC
74HC/HCT132
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Transfer characteristics are
given below.
Output capability: standard
I
CC
category: SSI
Transfer characteristics for 74HC
Voltages are referenced to GND (ground = 0 V)
T
amb
(°C)
74HC
SYMBOL PARAMETER
+25
min. typ.
V
T+
positive-going threshold
0.7
1.7
2.1
V
T−
negative-going threshold 0.3
0.9
1.2
V
H
hysteresis (V
T+
−
V
T−
)
0.2
0.4
0.6
AC CHARACTERISTICS FOR 74HC
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
T
amb
(°C)
74HC
SYMBOL PARAMETER
+25
min. typ.
t
PHL
/ t
PLH
propagation delay
nA, nB to nY
36
13
10
t
THL
/ t
TLH
output transition time
19
7
6
max.
125
25
21
75
15
13
−40
TO
+85
min. max.
155
31
26
95
19
16
−40
TO
+125
min.
max.
190
38
32
110
22
19
ns
ns
2.0
4.5
6.0
2.0
4.5
6.0
Fig.13
Fig.13
UNIT
V
CC
(V)
WAVEFORMS
TEST CONDITIONS
1.18
2.38
3.14
0.63
1.67
2.26
0.55
0.71
0.88
max.
1.5
3.15
4.2
1.0
2.2
3.0
1.0
1.4
1.6
−40
to
+85
min. max.
0.7
1.7
2.1
0.3
0.9
1.2
0.2
0.4
0.6
1.5
3.15
4.2
1.0
2.2
3.0
1.0
1.4
1.6
−40
to
+125
min. max.
0.7
1.7
2.1
0.3
0.9
1.2
0.2
0.4
0.6
1.5
3.15
4.2
1.0
2.2
3.0
1.0
1.4
1.6
V
V
V
2.0
4.5
6.0
2.0
4.5
6.0
2.0
4.5
6.0
Figs 6 and 7
Figs 6 and 7
Figs 6 and 7
WAVEFORMS
UNIT V
CC
(V)
TEST CONDITIONS
September 1993
4
PHILIPS [ NXP SEMICONDUCTORS ]
