__________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.)
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
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.
DG406/DG407
Improved, 16-Channel/Dual 8-Channel,
CMOS Analog Multiplexers
6 _______________________________________________________________________________________
Bidirectional OutputD28
Address InputsA3–A014–17
Enable InputsEN18
Bidirectional Analog Inputs S1–S819–26
Negative Supply Voltage InputV-27
GroundGND12
Bidirectional Analog Inputs S16–S94–11
DG406
PIN
No Connection. Not internally
connected.
N.C.2, 3, 13
Positive Supply Voltage InputV+1
FUNCTIONNAME
Negative Supply Voltage InputV-27
Bidirectional Output ADA28
GroundGND12
Address InputsA2, A1, A015, 16, 17
Enable InputEN18
Bidirectional Analog Inputs S1A–S8A19–26
Bidirectional Analog Inputs S8B–S1B4–11
No Connection. Not internally
connected.
N.C.3, 13, 14
DG407
PIN
Bidirectional Output BDB2
Positive Supply Voltage InputV+1
FUNCTIONNAME
_____________________________________________________________Pin Descriptions