Philips Semiconductors
Product specification
4-to-16 line decoder/demultiplexer
74HC154; 74HCT154
Type 74HCT154
GND = 0 V; tr = tf = 6 ns; CL = 50 pF.
TEST CONDITIONS
WAVEFORMS VCC (V)
SYMBOL
PARAMETER
MIN.
TYP.
MAX.
UNIT
Tamb = 25 °C
tPHL/tPLH
propagation delay An to Yn see Figs 7 and 9
propagation delay En to Yn see Figs 8 and 9
4.5
4.5
−
−
−
16
35
ns
15
7
32
15
ns
ns
tTHL/tTLH
output transition time
see Figs 7, 8 and 9 4.5
Tamb = −40 °C to +85 °C
tPHL/tPLH
propagation delay An to Yn see Figs 7 and 9
propagation delay En to Yn see Figs 8 and 9
4.5
4.5
−
−
−
−
−
−
44
40
19
ns
ns
ns
tTHL/tTLH
output transition time
see Figs 7, 8 and 9 4.5
Tamb = −40 °C to +125 °C
tPHL/tPLH
propagation delay An to Yn see Figs 7 and 9
propagation delay En to Yn see Figs 8 and 9
4.5
4.5
−
−
−
−
−
−
53
48
22
ns
ns
ns
tTHL/tTLH
output transition time
see Figs 7, 8 and 9 4.5
AC WAVEFORMS
V
I
V
I
V
M
V
M
V
M
V
An input
GND
En input
GND
M
t
t
t
t
PLH
PLH
PHL
PLH
V
OH
V
OH
90 %
90 %
90 %
90 %
V
M
V
M
V
M
V
M
Yn output
Yn output
10 %
10 %
10 %
10 %
V
OL
V
OL
t
t
t
t
THL
TLH
001aab073
THL
TLH
001aab074
For 74HC154: VM = 50 %; VI = GND to VCC
.
For 74HC154: VM = 50 %; VI = GND to VCC
.
For 74HCT154: VM = 1.3 V; VI = GND to 3 V.
For 74HCT154: VM = 1.3 V; VI = GND to 3 V.
Fig.8 The enable input (En) to output (Yn)
Fig.7 The input (An) to output (Yn) propagation
delays and the output transition times.
propagation delays and the output transition
times.
2004 Oct 12
14
NXP [ NXP ]
