MAX395CWG Maxim Integrated Products, MAX395CWG Datasheet - Page 13
MAX395CWG
Manufacturer Part Number
MAX395CWG
Description
Analog Switch ICs
Manufacturer
Maxim Integrated Products
Datasheet
1.MAX395EWG.pdf
(16 pages)
Specifications of MAX395CWG
Switch Configuration
SPST
On Resistance (max)
500 Ohms at 3.6 V
On Time (max)
600 ns at 3.6 V
Off Time (max)
400 ns at 5.5 V
Supply Voltage (max)
16 V
Supply Voltage (min)
2.7 V
Maximum Power Dissipation
941 mW
Maximum Operating Temperature
+ 70 C
Package / Case
SOIC-24 Wide
Minimum Operating Temperature
0 C
Switch Current (typ)
0.007 mA at 5.5 V
Lead Free Status / Rohs Status
No
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To use the MAX395 as an 8x1 multiplexer, connect all
common pins together (COM0–COM7) to form the mux
output; the mux inputs are NO0–NO7.
The mux can be programmed normally, with only one
channel selected for every eight clock pulses, or it can
be programmed in a fast mode, where channel chang-
ing occurs on each clock pulse. In this mode, the chan-
nels are selected by sending a single high pulse
(corresponding to the selected channel) at DIN, and a
corresponding CS low pulse for every eight clock puls-
es. As this is clocked through the register by SCLK,
each switch sequences one channel at a time, starting
with Channel 7.
Figure 3. Connections for Microwire
Figure 5. Daisy-Chained Connection
THE DOUT-SI CONNECTION IS NOT REQUIRED FOR WRITING TO THE
MAX395, BUT MAY BE USED FOR DATA-ECHO PURPOSES.
SCLK
DIN
CS
MAX395
DOUT
SCLK
______________________________________________________________________________________
DIN
CS
SCLK
DIN
CS
MAX395
SK
SO
SI
I/O
DOUT
8x1 Multiplexer
Serially Controlled, Low-Voltage,
MICROWIRE
PORT
SCLK
DIN
CS
MAX395
8-Channel SPST Switch
DOUT
To use the MAX395 as a dual (4x2) mux, connect
COM0–COM3 together and connect COM4–COM7
together, forming the two outputs. The mux input pairs
become NO0/NO4, NO1/NO5, NO2/NO6, and NO3/NO7.
The mux can be programmed normally, with only one
differential channel selected for every eight clock puls-
es, or it can be programmed in a fast mode, where
channel changing occurs on each clock pulse.
In fast mode, the channels are selected by sending two
high pulses spaced four clock pulses apart (corre-
sponding to the two selected channels) at DIN, and a
corresponding CS low pulse for each of the first eight
clock pulses. As this is clocked through the register by
Figure 4. Connections for SPI and QSPI
Dual, Differential 4-Channel Multiplexer
THE DOUT-MISO CONNECTION IS NOT REQUIRED FOR WRITING TO THE
MAX395, BUT MAY BE USED FOR DATA-ECHO PURPOSES.
MAX395
SCLK
DIN
CS
DOUT
SCLK
MAX395
DIN
CS
DOUT
CPOL = 0, CPHA = 0
MISO
MOSI
SCK
I/O
TO OTHER
SERIAL DEVICES
PORT
SPI
13