S
1
S
2
D
1
D
2
NC NC
NC NC
IN
1
V–
V+
IN
2
NC GND
Plastic Dip
1
2
3
4
5
6
7
14
13
12
11
10
9
8
Top View
DG381B
DG381B/384B/387B/390B
Vishay Siliconix
Document Number: 71404
S-02968—Rev. A, 22-Jan-01
www.vishay.com
1
CMOS Analog Switches
FEATURES BENEFITS APPLICATIONS
D "15-V Input Range
D Low r
DS(on)
: 30 W
D Single Supply Operation
D Pin and Function Compatible with the
JFET DG180 Family
D Full Rail-to-Rail Analog Signal Range
D Minimizes Signal Error
D Low Power Dissipation
D Low Level Switching Circuits
D Programmable Gain Amplifiers
D Portable and Battery Powered
Sytems
DESCRIPTION
The DG381B–DG390B series of monolithic CMOS analog
switches was designed for applications in instrumentation,
communications, and process control. This series is suited for
applications requiring fast switching and nearly flat
on-resistance over the entire voltage range.
Designed on Vishay Siliconix’ PLUS-40 CMOS process,
these devices achieve low power consumption (3.5 mW
typical) and excellent on/off switch performance. These
switches are ideal for battery powered applications, without
sacrificing switching speed. Break-before-make switching
action is guaranteed, and an epitaxial layer prevents latchup.
Single supply operation is allowed by connecting the V– rail to
0 V.
Each switch conducts equally well in both directions when on,
and blocks up to the supply voltage when off. These switches
are CMOS and quasi TTL logic compatible.
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
TRUTH TABLE
Logic Switch
0 ON
1 OFF
Logic “0” v 0.8 V
Logic “1” w 4 V
