MAX336 Maxim, MAX336 Datasheet - Page 6

• Manufacturer Part Number: MAX336
• Description: The MAX336/MAX337 are monolithic, CMOS analog multiplexers (muxes)
• Manufacturer: Maxim

Using supply voltages less than ±15V will reduce the
analog signal range. The MAX336/MAX337 switches
operate with ±4.5V to ±20V bipolar supplies or with a
+4.5V to +30V single supply. Connect V- to GND when
operating with a single supply. Both device types can
also operate 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.)
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 NO and COM. If power-supply sequencing
is not possible, add two small signal diodes in series
with supply pins for overvoltage protection (Figure 1).
Adding diodes reduces the analog signal range to 1V
below V+ and 1V above V-, but does not significantly
affect the devices’ low switch resistance and low leak-
age characteristics. Device operation is unchanged,
and the difference between V+ and V- should not
exceed 44V.
16-Channel/Dual 8-Channel,
Low-Leakage, CMOS Analog Multiplexers
6
* Analog signal inputs and outputs are names of convenience only; they are identical and interchangeable.
______________________________________________________________Pin Description
__________Applications Information
_______________________________________________________________________________________
MAX336
2, 3, 13
14–17
19–26
4–11
—
—
12
—
18
—
27
28
—
1
PIN
Operation with Supply Voltages
15, 16, 17
MAX337
3, 13, 14
19–26
4–11
12
18
27
28
—
—
—
—
1
2
Overvoltage Protection
NO8B–NO1B
NO1A–NO8A
NO16-NO9
A2, A1, A0
NO1–NO8
Other than 15V
NAME
COMB
A3–A0
COMA
GND
COM
N.C.
N.C.
EN
V+
V-
Positive Supply-Voltage Input
No Internal Connection
Analog Signal B Output* (bidirectional)
No Internal Connection
Analog Signal Inputs* (bidirectional)
Analog Signal B Inputs* (bidirectional)
Logic Ground
Logic Address Inputs
Logic Address Inputs
Logic Enable Input
Analog Signal Inputs* (bidirectional)
Analog Signal A Inputs* (bidirectional)
Negative Supply-Voltage Input. Connect to GND for single-supply operation.
Analog Signal Output* (bidirectional)
Analog Signal A Output* (bidirectional)
Figure 1. Overvoltage Protection Using External Blocking
Diodes
V
g
NO
FUNCTION
V+
V-
MAX336
MAX337
COM