Vishay Siliconix
DG444B, DG445B
Document Number: 72626
S13-1287-Rev. C, 27-May-13
www.vishay.com
1
This document is subject to change without notice.
THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
For technical questions, contact: pmostechsupport@vishay.com
Improved Quad SPST CMOS Analog Switches
DESCRIPTION
The DG444B, DG445B are monolithic quad analog switches
designed to provide high speed, low error switching of
analog and audio signals. The DG444B, DG445B are
upgrades to the original DG444, DG445.
Combing low on-resistance (45 , typ.) with high speed
(t
ON
120 ns, typ.), the DG444B, DG445B are ideally suited
for Data Acquisition, Communication Systems, Automatic
Test Equipment, or Medical Instrumentation. Charge
injection has been minimized on the drain for use in
sample-and-hold circuits.
The DG444B, DG445B are built using Vishay Siliconix’s
high-voltage silicon-gate process. An epitaxial layer prevents
latchup.
When on, each switch conducts equally well in both
directions and blocks input voltages to the supply levels
when off.
FEATURES
• Low On-Resistance: 45 W
• Low Power Consumption: 1 mW
• Fast Switching Action - t
ON
: 120 ns
• Low Charge Injection
• TTL/CMOS-Compatible Logic
• Material categorization:
For definitions of compliance please see
www.vishay.com/doc?99912
BENEFITS
• Low Signal Errors and Distortion
• Reduced Power Supply Consumption
• Faster Throughput
• Reduced Pedestal Errors
• Simple Interfacing
APPLICATIONS
• Audio Switching
• Data Acquisition
• Sample-and-Hold Circuits
• Communication Systems
• Automatic Test Equipment
• Medical Instruments
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
Logic "0" 0.8 V
Logic "1" 2.4 V
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Top View
IN
1
IN
2
D
1
D
2
S
1
S
2
V-
V+
GND
V
L
S
4
S
3
D
4
D
3
IN
4
IN
3
Dual-In-Line and SOIC
DG444B
Top View
S
2
V+
V
L
S
3
IN
3
D
3
D
4
IN
4
IN
2
D
2
D
1
IN
1
S
1
V-
GND
S
4
1
2
3
4
5
6
8
7
16 15 14 13
12
11
10
9
DG444B
QFN16 (4 x 4 mm)
TRUTH TABLE
Logic DG444B DG445B
0 ON OFF
1OFFON
ORDERING INFORMATION
Temp Range Package Part Number
- 40 °C to 85 °C
16-pin Plastic DIP
DG444BDJ
DG444BDJ-E3
DG445BDJ
DG445BDJ-E3
16-pin Narrow SOIC
DG444BDY-E3
DG444BDY-T1-E3
DG445BDY-E3
DG445BDY-T1-E3
16 pin QFN 4 x 4 mm
(Variation 1)
DG444BDN-T1-E4
DG445BDN-T1-E4
