_______________General Description

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 (100

Ω max) is matched

between switches to 5

Ω max and is flat (10Ω max) over

the specified signal range.

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.

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.

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.

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.

________________________Applications

Serial Data-Acquisition

Industrial and Process-

Systems

Control Systems

Avionics

ATE Equipment

Audio Signal Routing

Networking

____________________________Features

o SPI™/QSPI™, Microwire™-Compatible Serial

Interface

o 8 Separately Controlled SPST Switches

o 100

Ω Signal Paths with ±5V Supplies

o Rail-to-Rail Signal Handling

o Asynchronous RESET Input

o Pin Compatible with Industry-Standard MAX335

o ±2.7V to ±8V Dual Supplies

+2.7V to +16V Single Supply

o >2kV ESD Protection per Method 3015.7

o TTL/CMOS-Compatible Inputs (with +5V or

±5V Supplies)

Serially Controlled, Low-Voltage,

8-Channel SPST Switch

________________________________________________________________

Maxim Integrated Products

1

LATCH

NO0

COM0

8-BIT SHIFT REGISTER

CLOCK TRANSLATOR

CS TRANSLATOR

DIN

RESET

SCLK

CS

NO7

COM7

PARALLEL REGISTER AND TRANSLATOR

DOUT

MAX395

________________Functional Diagram

SCLK

V+

DIN

GND

NO0

COM0

NO1

COM1

NO2

COM2

NO3

COM3

DIP/SO

TOP VIEW

MAX395

1

2

3

4

5

6

7

8

9

10

11

12

24

23

22

21

20

19

18

17

16

15

14

13

CS

RESET

DOUT

V-

NO7

COM7

NO6

COM6

NO5

COM5

NO4

COM4

LOGIC

__________________Pin Configuration

Call toll free 1-800-998-8800 for free samples or literature.

19-0448; Rev 0; 11/95

PART

MAX395CNG

MAX395CWG

MAX395C/D

0°C to +70°C

0°C to +70°C

0°C to +70°C

TEMP. RANGE

PIN-PACKAGE

24 Narrow Plastic DIP

24 Wide SO

Dice*

______________Ordering Information

* Contact factory for dice specifications.

** Contact factory for availability.

MAX395ENG

MAX395EWG

MAX395MRG

-55°C to +125°C

-40°C to +85°C

-40°C to +85°C

24 Narrow Plastic DIP

24 Wide SO

24 Narrow CERDIP**

SPI and QSPI are trademarks of Motorola, Inc. Microwire is a trademark of National Semiconductor Corp.