Datasheet

December 1990 6
Philips Semiconductors Product specification
Quad bistable transparent latch 74HC/HCT75
DC CHARACTERISTICS FOR 74HCT
For the DC characteristics see “74HC/HCT/HCU/HCMOS Logic Family Specifications” .
Output capability: standard
I
CC
category: MSI
Note to HCT types
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.
AC CHARACTERISTICS FOR 74HCT
GND=0V; t
r
=t
f
= 6 ns; C
L
=50pF
INPUT UNIT LOAD COEFFICIENT
nD
LE
n-n
0.75
1.00
SYMBOL PARAMETER
T
amb
(°C)
UNIT
TEST CONDITIONS
74HCT
V
CC
(V)
WAVEFORMS+25 −40 to +85 −40 to +125
min. typ. max. min. max. min. max.
t
PHL
/ t
PLH
propagation delay
nD to nQ
15 28 35 42 ns 4.5 Fig.6
t
PHL
/ t
PLH
propagation delay
nD to nQ
15 28 35 42 ns 4.5 Fig.7
t
PHL
/ t
PLH
propagation delay
LE
n-n
to nQ
13 28 35 42 ns 4.5 Fig.8
t
PHL
/ t
PLH
propagation delay
LE
n-n
to nQ
15 30 38 45 ns 4.5 Fig.8
t
THL
/ t
TLH
output transition time 7 15 19 22 ns 4.5 Figs 6 and 7
t
W
enable pulse width
HIGH
16 4 20 24 ns 4.5 Fig.8
t
su
set-up time
nD to LE
n-n
12 4 15 18 ns 4.5 Fig.9
t
h
hold time
nD to LE
n-n
3 −2 3 3 ns 4.5 Fig.9