1
File Number
3283.5
DG408, DG409
Single 8-Channel/Differential 4-Channel,
CMOS Analog Multiplexers
The DG408 Single 8-Channel, and DG409 Differential
4-Channel monolithic CMOS analog multiplexers are drop-in
replacements for the popular DG508A and DG509A series
devices. They each include an array of eight analog
switches, a TTL/CMOS compatible digital decode circuit for
channel selection, a voltage reference for logic thresholds
and an ENABLE input for device selection when several
multiplexers are present.
The DG408 and DG409 feature lower signal ON resistance
(<100Ω) and faster switch transition time (t
TRANS
< 250ns)
compared to the DG508A or DG509A. Charge injection has
been reduced, simplifying sample and hold applications. The
improvements in the DG408 series are made possible by
using a high-voltage silicon-gate process. An epitaxial layer
prevents the latch-up associated with older CMOS
technologies. Power supplies may be single-ended from +5V
to +34V, or split from ±5V to ±20V.
The analog switches are bilateral, equally matched for AC or
bidirectional signals. The ON resistance variation with
analog signals is quite low over a ±5V analog input range.
Features
• ON Resistance (Max, 25
o
C). . . . . . . . . . . . . . . . . . . 100Ω
• Low Power Consumption (P
D
) . . . . . . . . . . . . . . . <11mW
• Fast Switching Action
-t
TRANS
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .<250ns
-t
ON/OFF(EN)
. . . . . . . . . . . . . . . . . . . . . . . . . . . .<150ns
• Low Charge Injection
• Upgrade from DG508A/DG509A
• TTL, CMOS Compatible
• Single or Split Supply Operation
Applications
• Data Acquisition Systems
• Audio Switching Systems
• Automatic Testers
• Hi-Rel Systems
• Sample and Hold Circuits
• Communication Systems
• Analog Selector Switch
Pinouts
DG408 (PDIP, SOIC)
TOP VIEW
DG409 (PDIP, SOIC)
TOP VIEW
Ordering Information
PART
NUMBER
TEMP. RANGE
(
o
C) PACKAGE PKG. NO.
DG408DJ -40 to 85 16 Ld PDIP E16.3
DG408DY -40 to 85 16 Ld SOIC M16.15
DG409DJ -40 to 85 16 Ld PDIP E16.3
DG409DY -40 to 85 16 Ld SOIC M16.15
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
A
0
EN
V-
S
1
S
2
S
3
D
S
4
A
1
GND
V+
S
5
S
6
S
7
S
8
A
2
14
15
16
9
13
12
11
10
1
2
3
4
5
7
6
8
A
0
EN
V-
S
1A
S
2A
S
3A
D
A
S
4A
A
1
V+
S
1B
S
3B
S
4B
D
B
GND
S
2B
Data Sheet June 1999
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
| Copyright © Intersil Corporation 1999
