Philips Semiconductors
Product specification
Octal D-type transparent latch; 3-state
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see
“74HC/HCT/HCU/HCMOS Logic Family Specifications”.
Output capability: bus driver
I
CC
category: MSI
Note to HCT types
74HC/HCT373
The value of additional quiescent supply current (∆I
CC
) for a unit load of 1 is given in the family specifications.
To determine
∆I
CC
per input, multiply this value by the unit load coefficient shown in the table below.
INPUT
D
n
LE
OE
UNIT LOAD COEFFICIENT
0.30
1.50
1.00
AC CHARACTERISTICS FOR 74HCT
GND = 0 V; t
r
= t
f
= 6 ns; C
L
= 50 pF
T
amb
(°C)
74HCT
SYMBOL
PARAMETER
UNIT V
WAVEFORMS
CC
+25
−40
to
+85 −40
to
+125
(V)
min. typ. max. min. max. min. max.
17
16
19
18
5
16
12
4
4
6
−1
30
32
32
30
12
20
15
4
38
40
40
38
15
24
18
4
45
48
48
45
18
ns
ns
ns
ns
ns
ns
ns
ns
4.5
4.5
4.5
4.5
4.5
4.5
4.5
4.5
Fig.7
Fig.8
Fig.9
Fig.9
Fig.7
Fig.8
Fig.10
Fig.10
TEST CONDITIONS
t
PHL
/ t
PLH
t
PHL
/ t
PLH
t
PZH
/ t
PZL
t
PHZ
/ t
PLZ
t
THL
/ t
TLH
t
W
t
su
t
h
propagation delay
D
n
to Q
n
propagation delay
LE to Q
n
3-state output enable time
OE to Q
n
3-state output disable time
OE to Q
n
output transition time
LE pulse width
HIGH
set-up time
D
n
to LE
hold time
D
n
to LE
September 1993
6
PHILIPS [ NXP SEMICONDUCTORS ]
