DG508A Maxim, DG508A Datasheet - Page 7

• Manufacturer Part Number: DG508A
• Description: Maxim's DG508A and DG509A are monolithic CMOS analog multiplexers (muxes): the DG508A is a single 8-channel (1-of-8) mux, and the DG509A is a differential 4-channel (2-of-8) mux
• Manufacturer: Maxim

Figure 3. Break-Before-Make Test Circuit
Table 1a. DG508A Truth Table
X = Don’t care.
LOGIC
INPUT
A2
X
0
0
0
0
1
1
1
1
+2.4V
50Ω
A1
X
0
0
1
1
0
0
1
1
EN
A0, A1, (A2)
_______________________________________________________________________________________
GND
A0
Monolithic CMOS Analog Multiplexers
X
0
1
0
1
0
1
0
1
DG508A
DG509A
+15V
-15V
V-
AND DA
EN
ALL S
DB, D
0
1
1
1
1
1
1
1
1
+5V
ON SWITCH
1kΩ
NONE
1
2
3
4
5
6
7
8
SWITCH
OUTPUT
V
35pF
D
Figure 4. Timing Diagram for Figures 1, 2, and 3
Table 1b. DG509A Truth Table
X = Don’t care.
TENABLE t
(B.B.M INTERVAL)
LOGIC INPUT
TRANSITION
(SEE FIG. 1)
(SEE FIG. 2)
(SEE FIG. 3)
OPEN TIME
t
t
OUTPUT
OUTPUT
OUTPUT
SWITCH
SWITCH
SWITCH
r
f
< 20ns
< 20ns
TIME
TIME
A1
V
V
V
X
0
0
1
1
D
D
D
(ON)
t
(OFF)
t
transition
S
0.8V
0.8V
1
0.1V
0.9V
ON
50%
50%
V
V
3V
0V
V
V
V
S1
S1
S8
S8
0
0
0
0
0
0
S
S
A0
X
0
1
0
1
t
(EN)
ON
t
open
S
EN
8
ON
0
1
1
1
1
ON SWITCH
NONE
1
2
3
4
t
transition
t
(EN)
OFF
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