December 1990 5
Philips Semiconductors Product specification
8-channel analog multiplexer/demultiplexer
with latch
74HC/HCT4351
RATINGS
Limiting values in accordance with the Absolute Maximum System (IEC 134)
Voltages are referenced to V
EE
= GND (ground = 0 V)
Note to ratings
1. To avoid drawing V
CC
current out of terminal Z, when switch current flows in terminals Y
n
, the voltage drop across
the bidirectional switch must not exceed 0.4 V. If the switch current flows into terminal Z, no V
CC
current will flow out
of terminals Y
n
. In this case there is no limit for the voltage drop across the switch, but the voltages at Y
n
and Z may
not exceed V
CC
or V
EE
.
RECOMMENDED OPERATING CONDITIONS
SYMBOL PARAMETER MIN. MAX. UNIT CONDITIONS
V
CC
DC supply voltage −0.5 +11.0 V
±I
IK
DC digital input diode current 20 mA for V
I
<−0.5 V or V
I
> V
CC
+ 0.5 V
±I
SK
DC switch diode current 20 mA for V
S
<−0.5 V or V
S
> V
CC
+ 0.5 V
±I
S
DC switch current 25 mA for −0.5 V < V
S
< V
CC
+ 0.5 V
±I
EE
DC V
EE
current 20 mA
±I
CC;
±I
GND
DC V
CC
or GND current 50 mA
T
stg
storage temperature range −65 +150 °C
P
tot
power dissipation per package for temperature range: −40 to +125 °C
74HC/HCT
plastic DIL 750 mW above +70 °C: derate linearly with 12 mW/K
plastic mini-pack (SO) 500 mW above +70 °C: derate linearly with 8 mW/K
P
S
power dissipation per switch 100 mW
SYMBOL PARAMETER
74HC 74HCT
UNIT CONDITIONS
min. typ. max. min. typ. max.
V
CC
DC supply voltage V
CC
−GND 2.0 5.0 10.0 4.5 5.0 5.5 V see Figs 6 and 7
V
CC
DC supply voltage V
CC
−V
EE
2.0 5.0 10.0 2.0 5.0 10.0 V see Figs 6 and 7
V
I
DC input voltage range GND V
CC
GND V
CC
V
V
S
DC switch voltage range V
EE
V
CC
V
EE
V
CC
V
T
amb
operating ambient temperature range −40 +85 −40 +85 °C see DC and AC
CHARACTERISTICS
T
amb
operating ambient temperature range −40 +125 −40 +125 °C
t
r
, t
f
input rise and fall times
6.0
1000
500
400
250
6.0 500 ns
V
CC
= 2.0 V
V
CC
= 4.5 V
V
CC
= 6.0 V
V
CC
= 10.0 V
