Philips Semiconductors
Product specification
Quad buffer/line driver; 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/HCT125
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
nA, nOE
UNIT LOAD COEFFICIENT
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
+25
−40
to +85
−40
to +125
max.
38
42
38
18
ns
ns
ns
ns
4.5
4.5
4.5
4.5
Fig.6
Fig.7
Fig.7
Fig.6
UNIT V
CC
(V)
WAVEFORMS
TEST CONDITIONS
min. typ. max. min. max. min.
t
PHL
/ t
PLH
t
PZH
/ t
PZL
t
PHZ
/ t
PLZ
t
THL
/ t
TLH
propagation delay
nA to nY
3-state output enable time
nOE to nY
3-state output disable time
nOE to nY
output transition time
15
15
15
5
25
28
25
12
31
35
31
15
December 1990
5
PHILIPS [ NXP SEMICONDUCTORS ]
