CMOS 4-/8-Channel
Analog Multiplexers
ADG508A/ADG509A
FEATURES
44 V supply maximum rating
V
SS
to V
DD
analog signal range
Single-/dual-supply specifications
Wide supply range: 10.8 V to 16.5 V
Extended plastic temperature range: −40°C to +85°C
Low power dissipation: 28 mW maximum
Low leakage: 20 pA typical
Available in 16-lead DIP/SOIC and 20-lead PLCC/LCC
packages
Superior alternative to
DG508A, HI-508
DG509A, HI-509
FUNCTIONAL BLOCK DIAGRAMS
ADG508A
S1
D
S8
DECODER
00051-001
A0 A1 A2 EN
Figure 1. ADG508A
ADG509A
S1A
S4A
DA
S1B
S4B
DECODER
DB
A0
A1
EN
Figure 2. ADG509A
GENERAL DESCRIPTION
The ADG508A and ADG509A are CMOS monolithic analog
multiplexers with eight channels and dual four channels, respec-
tively. The ADG508A switches one of eight inputs to a common
output, depending on the state of three binary addresses and an
enable input. The ADG509A switches one of four differential
inputs to a common differential output, depending on the state
of two binary addresses and an enable input. Both devices have
TTL and 5 V CMOS logic-compatible digital inputs.
The ADG508A and ADG509A are designed on an enhanced
LC
2
MOS process that gives an increased signal capability of V
SS
to V
DD
and enables operation over a wide range of supply voltages.
The devices can comfortably operate anywhere in the 10.8 V to
16.5 V single- or dual-supply range. These multiplexers also
feature high switching speeds and low R
ON
.
PRODUCT HIGHLIGHTS
1.
Single-/Dual-Supply Specifications with a Wide Tolerance.
The devices are specified in the 10.8 V to 16.5 V range for
both single and dual supplies.
Extended Signal Range. The enhanced LC
2
MOS processing
results in a high breakdown and an increased analog signal
range of V
SS
to V
DD
.
Break-Before-Make Switching. Switches are guaranteed
break-before-make so that input signals are protected
against momentary shorting.
Low Leakage. Leakage currents in the range of 20 pA make
these multiplexers suitable for high precision circuits.
2.
3.
4.
Rev. D
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00051-002
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