dg421dy Maxim Integrated Products, Inc., dg421dy Datasheet - Page 9

• Manufacturer Part Number: dg421dy
• Description: Improved Low-power, Cmos Analog Switches With Latches Integrated Products
• Manufacturer: Maxim Integrated Products, Inc.

_____________________________Functional Diagrams/Truth Tables (continued)
_____________________________________________Pin Configurations (continued)
WR
0
TWO SPDT SWITCHES PER PACKAGE
WR
D1
D3
RS
S3
S4
D4
D2
S1
S3
WR
IN1
RS
IN2
S2
S4
RS
1
1
2
3
4
5
6
7
8
_______________________________________________________________________________________
DG423 TRUTH TABLE
IN
CK
D
CK
D
0
1
DG423
DG425
R Q
R
LOGIC "O"
LOGIC "1"
DIP
SWITCH 1, 2
CMOS Analog Switches with Latches
Q
Q
Q
Off
On
DG423
16
15
14
13
12
11
10
2.4V
0.8V
9
IN
X
S1
IN1
V-
GND
V
V+
IN2
X
X
X
S2
SWITCH 3, 4
L
RS
D1
D3
D2
D4
On
Off
1
1
0
LATCH OPERATION TRUTH TABLE
WR
X
X
0
Latch operation transparent.
Control data latched in.
Switches on or off as selected by last IN.
All latches reset. Switches on or off as
when IN = 0, WR = 0, RS = 1.
TOP VIEW
LATCH/SWITCH X
Improved Low-Power,
N.C.
D3
D4
S3
S4
TWO DPST SWITCHES PER PACKAGE
4
5
6
7
8
S1
S3
WR
IN1
RS
IN2
S2
S4
DG425 TRUTH TABLE
N.C. = No Internal Connection
WR RS IN SWITCH
3
CK
D R Q
CK
9
D
0
LOGIC "O"
LOGIC "1"
R
1
10
Q
2
DG423
DG425
PLCC
0
1
11
1
DG425
2.4V
0.8V
Off
On
12
20
19
13
D1
D3
D2
D4
18
17
16
15
14
V-
GND
N.C.
V
V+
L
9