December 1990 13
Philips Semiconductors Product specification
8-channel analog multiplexer/demultiplexer
with latch
74HC/HCT4351
ADDITIONAL AC CHARACTERISTICS FOR 74HC/HCT
Recommended conditions and typical values
GND = 0 V; T
amb
=25°C
Notes to AC characteristics
1. Adjust input voltage V
is
to 0 dBm level (0 dBm = 1 mW into 600 Ω).
2. Adjust input voltage V
is
to 0 dBm level at V
os
for 1 MHz (0 dBm = 1 mW into 50 Ω).
V
is
is the input voltage at a Y
n
or Z terminal, whichever is assigned as an input.
V
os
is the output voltage at a Y
n
or Z terminal, whichever is assigned as an output.
SYMBOL PARAMETER typ. UNIT
V
CC
(V)
V
EE
(V)
V
is(p−p)
(V)
CONDITIONS
sine-wave distortion
f = 1 kHz
0.04
0.02
%
%
2.25
4.5
−2.25
−4.5
4.0
8.0
R
L
= 10 kΩ; C
L
= 50 pF
(see Fig.14)
sine-wave distortion
f = 10 kHz
0.12
0.06
%
%
2.25
4.5
−2.25
−4.5
4.0
8.0
R
L
= 10 kΩ; C
L
= 50 pF
(see Fig.14)
switch “OFF” signal
feed-through
−50
−50
dB
dB
2.25
4.5
−2.25
−4.5
note 1 R
L
= 600 Ω; C
L
= 50 pF
(see Figs 12 and 15)
V
(p−p)
crosstalk voltage between
control and any switch
(peak-to-peak value)
120
220
mV
mV
4.5
4.5
0
−4.5
R
L
= 600 Ω; C
L
= 50 pF;
f = 1 MHz (E
1
, E
2
or S
n
,
square-wave between V
CC
and GND, t
r
=t
f
= 6 ns)
(see Fig.16)
f
max
minimum frequency response
(−3dB)
160
170
MHz
MHz
2.25
4.5
−2.25
−4.5
note 2 R
L
=50Ω; C
L
= 10 pF
(see Figs 13 and 14)
C
S
maximum switch capacitance
independent (Y)
common (Z)
5
25
pF
pF
Fig.12 Typical switch “OFF” signal feed-through as a function of frequency.
Test conditions:
V
CC
= 4.5 V; GND = 0 V; V
EE
= −4.5 V;
R
L
=50Ω; R
source
=1 kΩ.
