DG444/445
Vishay Siliconix
Quad SPST CMOS Analog Switches
FEATURES
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D
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D
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Low On-Resistance: 50
W
Low Leakage: 80 pA
Low Power Consumption: 22 nW
Fast Switching Action—t
ON
: 120 ns
Low Charge Injection
DG211/DG212 Upgrades
TTL/CMOS Logic Compatible
BENEFITS
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Low Signal Errors and Distortion
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Reduced Power Supply
Requirements
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Faster Throughput
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Improved Reliability
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Reduced Pedestal Errors
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Simple Interfacing
APPLICATIONS
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Audio Switching
Battery Powered Systems
Data Acquisition
Sample-and-Hold Circuits
Telecommunication Systems
Automatic Test Equipment
Single Supply Circuits
Hard Disk Drives
DESCRIPTION
The DG444/DG445 monolithic quad analog switches are
designed to provide high speed, low error switching of analog
signals. The DG444 has a normally closed function. The
DG445 has a normally open function. Combining low power
(22 nW, typ) with high speed (t
ON
: 120 ns, typ), the
DG444/DG445 are ideally suited for upgrading DG211/212
sockets. Charge injection has been minimized on the drain for
use in sample-and-hold circuits.
To achieve high-voltage ratings and superior switching
performance, the DG444/DG445 are built on Vishay Siliconix’s
high-voltage silicon-gate process. An epitaxial layer prevents
latchup.
Each switch conducts equally well in both directions when on,
and blocks input voltages to the supply levels when off.
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
Dual-In-Line and SOIC
IN
1
D
1
S
1
V–
GND
S
4
D
4
IN
4
1
2
3
4
16
15
14
13
IN
2
TRUTH TABLE
Logic
DG444
ON
OFF
Logic “0”
v
0.8 V
Logic “1”
w
2.4 V
DG445
OFF
ON
D
2
S
2
V+
V
L
0
1
DG444
5
6
7
8
12
11
10
9
ORDERING INFORMATION
S
3
D
3
–40_C to 85_C
40_C
IN
3
DG444DY
16-Pin Narrow SOIC
DG445DY
Top View
Temp Range
Package
16-Pin Plastic DIP
Part Number
DG444DJ
DG445DJ
Document Number: 70054
S-52433—Rev. F, 06-Sep-99
www.vishay.com
S
FaxBack 408-970-5600
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