DG308B/309B
Vishay Siliconix
Improved Quad CMOS Analog Switches
FEATURES
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"22-V
Supply Voltage Rating
CMOS Compatible Logic
Low On-Resistance鈥攔
DS(on)
: 45
W
Low Leakage鈥擨
D(on)
: 20 pA
Single Supply Operation Possible
Extended Temperature Range
Fast Switching鈥攖
ON
: < 200 ns
Low Glitching鈥擰: 1 pC
BENEFITS
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Simple Logic Interface
Higher Accuracy
Minimum Transients
Reduced Power Consumption
Superior to DG308A/309
Space Savings (TSSOP)
APPLICATIONS
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Industrial Instrumentation
Test Equipment
Communications Systems
Disk Drives
Computer Peripherals
Portable Instruments
Sample-and-Hold Circuits
DESCRIPTION
The DG308B/309B analog switches are highly improved
versions of the industry-standard DG308A/309. These
devices are fabricated in Vishay Siliconix鈥?proprietary silicon
gate CMOS process, resulting in lower on-resistance, lower
leakage, higher speed, and lower power consumption.
switching transients. The DG308B and DG309B can handle
up to
"22-V
input signals. An epitaxial layer prevents latchup.
All devices feature true bi-directional performance in the on
condition, and will block signals to the supply levels in the off
condition.
These quad single-pole single-throw switches are designed
for a wide variety of applications in telecommunications,
instrumentation, process control, computer peripherals, etc.
An improved charge injection compensation design minimizes
The DG308B is a normally open switch and the DG309B is a
normally closed switch. (See Truth Table.)
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
DG308B
Dual-In-Line, SOIC and TSSOP
TRUTH TABLE
Logic
DG308B
OFF
ON
Logic 鈥?鈥?/div>
v
3.5V
Logic 鈥?鈥?/div>
w
11 V
DG309B
ON
OFF
IN
1
D
1
S
1
V鈥?/div>
GND
S
4
D
4
IN
4
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
IN
2
D
2
S
2
V+
NC
S
3
D
3
IN
3
0
1
ORDERING INFORMATION
Temp Range
Package
16-Pin Plastic DIP
鈥?0 to 85_C
40
16-Pin Narrow SOIC
16-Pin TSSOP
Part Number
DG308BDJ
DG309BDJ
DG308BDY
DG309BDY
DG308BDQ
DG309BDQ
DG308BAK
DG308BAK/883
DG309BAK
DG309BAK/883
Top View
鈥?5 to 125_C
55
16-Pin CerDIP
16 Pi C DIP
Document Number: 70047
S-52896鈥擱ev. E, 14-Jul-97
www.vishay.com
S
FaxBack 408-970-5600
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