Vishay Siliconix
DG308A, DG309
Document Number: 70046
S11-0303-Rev. G, 28-Feb-11
www.vishay.com
1
Quad Monolithic SPST CMOS Analog Switches
FEATURES
• ± 15 V analog input range
• Low on-resistance: 60
• Fast switching: 130 ns
• Low power dissipation: 30 nW
• CMOS logic compatible
BENEFITS
• Full rail-to-rail analog signal range
• Low signal error
• Wide dynamic range
• Single or dual supply capability
• Static protected logic inputs
• Space savings (TSSOP)
APPLICATIONS
• Portable and battery powered instrumentation
• Communication systems
• Computer peripherals
• High-speed multiplexing
DESCRIPTION
Featuring low on-resistance (60 ) and fast switching
(130 ns), the DG308A is supplied in the “normally open”
configuration while DG309 is supplied “normally closed”.
Input thresholds are high voltage CMOS compatible.
Designed with the Vishay Siliconix PLUS-40 CMOS process
to combine low power dissipation with a high breakdown
voltage rating of 44 V, each switch conducts equally well in
both directions when on, and blocks up to the supply voltage
when off. An epitaxial layer prevents latch up.
The DG308B, DG309B upgrades are recommended for new
designs.
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
For SPST Switches per Package
Logic “0” 3.5 V
Logic “1” 11 V
* Pb containing terminations are not RoHS compliant, exemptions may apply
IN
1
IN
2
D
1
D
2
S
1
S
2
V–
V+
GND
NC
S
4
S
3
D
4
D
3
IN
4
IN
3
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Top View
DG308A
TRUTH TABLE
Logic DG308A DG309
0 OFF ON
1ONOFF
