Improved, 16-Channel/Dual 8-Channel,
CMOS Analog Multiplexers
DG406/DG407
_____________________________________________________________Pin Descriptions
DG406
PIN
1
2, 3, 13
4–11
12
14–17
18
19–26
27
28
NAME
V+
N.C.
S16–S9
GND
A3–A0
EN
S1–S8
V-
D
FUNCTION
Positive Supply Voltage Input
No Connection. Not internally
connected.
Bidirectional Analog Inputs
Ground
Address Inputs
Enable Inputs
Bidirectional Analog Inputs
Negative Supply Voltage Input
Bidirectional Output
DG407
PIN
1
2
3, 13, 14
4–11
12
15, 16, 17
18
19–26
27
28
NAME
V+
DB
N.C.
S8B–S1B
GND
A2, A1, A0
EN
S1A–S8A
V-
DA
FUNCTION
Positive Supply Voltage Input
Bidirectional Output B
No Connection. Not internally
connected.
Bidirectional Analog Inputs
Ground
Address Inputs
Enable Input
Bidirectional Analog Inputs
Negative Supply Voltage Input
Bidirectional Output A
__________Applications Information
Operation with Supply Voltages
Other than ±15V
Using supply voltages other than ±15V reduces the
analog signal range. The DG406/DG407 switches oper-
ate with ±4.5V to ±20V bipolar supplies or with a +5V to
+30V single supply; connect V- to GND when operating
with a single supply. Also, both device types can oper-
ate with unbalanced supplies such as +24V and
-5V. The
Typical Operating Characteristics
graphs
show typical on-resistance with 20V, 15V, 10V, and 5V
supplies. (Switching times increase by a factor of two
or more for operation at 5V.)
signal range to 1V above V+ and 1V below V-, but low
switch resistance and low leakage characteristics are
unaffected. Device operation is unchanged, and the
difference between V+ and V- should not exceed +44V.
V+
S
D
Overvoltage Protection
Proper power-supply sequencing is recommended for
all CMOS devices. Do not exceed the absolute maxi-
mum ratings because stresses beyond the listed rat-
ings may cause permanent damage to the devices.
Always sequence V+ on first, then V-, followed by the
logic inputs and analog signals. If power-supply
sequencing is not possible, add two small signal
diodes in series with supply pins for overvoltage pro-
tection (Figure 1). Adding diodes reduces the analog
V
g
V-
Figure 1. Overvoltage Protection Using External Blocking
Diodes
6
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