19-0448; Rev 0; 11/95
S e ria lly Co n t ro lle d , Lo w -Vo lt a g e ,
8 -Ch a n n e l S P S T S w it c h
MAX395
_______________Ge n e ra l De s c rip t io n
____________________________Fe a t u re s
The MAX395 8-channel, serially controlled, single-pole/sin-
gle-throw (SPST) analog switch offers eight separately
controlled switches. The switches conduct equally well in
either direction. On-resistance (100Ω max) is matched
between switches to 5Ω max and is flat (10Ω max) over
the specified signal range.
♦ SPI™/QSPI™, Microwire™-Compatible Serial
Interface
♦ 8 Separately Controlled SPST Switches
♦ 100Ω Signal Paths with ±5V Supplies
♦ Rail-to-Rail Signal Handling
These CMOS devices can operate continuously with
dual power supplies ranging from ±2.7V to ±8V or a
single supply between +2.7V and +16V. Each switch
can handle rail-to-rail analog signals. The off leakage
current is only 0.1nA at +25°C or 5nA at +85°C.
♦ Asynchronous RESET Input
♦ Pin Compatible with Industry-Standard MAX335
♦ ±2.7V to ±8V Dual Supplies
+2.7V to +16V Single Supply
Upon power-up, all switches are off, and the internal shift
registers are reset to zero. The MAX395 is electrically
equivalent to two MAX391 quad switches controlled by a
serial interface, and is pin compatible with the MAX335.
♦ >2kV ESD Protection per Method 3015.7
♦ TTL/CMOS-Compatible Inputs (with +5V or
±5V Supplies)
The serial interface is compatible with SPI™/QSPI™ and
Microwire™. Functioning as a shift register, it allows data
(at DIN) to be clocked in synchronously with the rising
edge of clock (SCLK). The shift register’s output (DOUT)
enables several MAX395s to be daisy chained.
______________Ord e rin g In fo rm a t io n
PART
TEMP. RANGE
0°C to +70°C
PIN-PACKAGE
24 Narrow Plastic DIP
24 Wide SO
MAX395CNG
MAX395CWG
MAX395C/D
MAX395ENG
MAX395EWG
MAX395MRG
All digital inputs have 0.8V to 2.4V logic thresholds, ensur-
ing both TTL- and CMOS-logic compatibility when using
±5V supplies or a single +5V supply.
0°C to +70°C
0°C to +70°C
Dice*
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
24 Narrow Plastic DIP
24 Wide SO
________________________Ap p lic a t io n s
Serial Data-Acquisition
Systems
Industrial and Process-
Control Systems
24 Narrow CERDIP**
*
Contact factory for dice specifications.
Avionics
ATE Equipment
Networking
** Contact factory for availability.
Audio Signal Routing
________________Fu n c t io n a l Dia g ra m
__________________P in Co n fig u ra t io n
NO0
NO7
TOP VIEW
SCLK
V+
1
2
3
4
5
6
7
8
9
24 CS
MAX395
23 RESET
22 DOUT
21 V-
COM0
COM7
DIN
LOGIC
GND
NO0
PARALLEL REGISTER AND TRANSLATOR
8-BIT SHIFT REGISTER
20 NO7
19 COM7
18 NO6
17 COM6
16 NO5
15 COM5
14 NO4
13 COM4
COM0
NO1
DOUT
DIN
COM1
NO2
RESET
MAX395
COM2 10
NO3 11
SCLK
CS
CLOCK TRANSLATOR
LATCH
COM3 12
CS TRANSLATOR
DIP/SO
SPI and QSPI are trademarks of Motorola, Inc. Microwire is a trademark of National Semiconductor Corp.
________________________________________________________________ Maxim Integrated Products
1
Ca ll t o ll fre e 1 -8 0 0 -9 9 8 -8 8 0 0 fo r fre e s a m p le s o r lit e ra t u re .