Datasheet

MAX382/MAX384
Low-Voltage, 8-Channel/Dual 4-Channel
Multiplexers with Latchable Inputs
______________________________________________________________________________________ 11
DECODERS / DRIVERS
COMA
NO1A
NO2A
NO3A
NO4A
V+ V- GND
COMB
NO1B
NO2B
NO3B
NO4B
DECODERS / DRIVERS
LATCHES
COM
NO1
NO2
NO3
NO4
NO5
NO6
NO7
NO8
WR
A1A2 A0 EN
V+ V- GND
RS
MAX384 DIFFERENTIAL 4-CHANNEL MULTIPLEXER
MAX382 8-CHANNEL SINGLE-ENDED MULTIPLEXER
LATCHES
WR
A1 A0 EN
RS
A1 A0 EN
ON SWITCH
Maintains previous
switch condition
NONE
(latches cleared)
NONE
1
2
3
4
X
0
0
1
1
X
0
1
0
1
0
1
1
1
1
0
0
0
0
0
1
1
1
1
1
XXX 1
XXXX0
WR RS
LOGIC "0" = V
AL
≤ 0.8V, LOGIC "1" V
AH
≥ 2.4V
Latching
Reset
Transparent Operation
A1A2 A0 EN
ON SWITCH
Maintains previous
switch condition
NONE
(latches cleared)
NONE
1
2
3
4
5
6
7
8
X
0
0
1
1
0
0
1
1
X
0
0
0
0
1
1
1
1
X
0
1
0
1
0
1
0
1
0
1
1
1
1
1
1
1
1
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
XXXX1
XX XXX0
WR RS
Latching
Reset
Transparent Operation
__________________________________________Functional Diagrams/Truth Tables
COM
V-
V+
NO
* INTERNAL PROTECTION DIODES
D2
D1
-5V
+5V
MAX382
MAX384
*
*
*
*
Figure 8. Overvoltage Protection Using External Blocking Diodes