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DG459AK/883 Datasheet

  • DG459AK/883

  • Fault-Protected Single 8-Ch/Differential 4-Ch Analog Multipl...

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  • VISHAY   VISHAY

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DG458/459
Vishay Siliconix
Fault-Protected Single 8-Ch/Differential 4-Ch Analog Multiplexers
FEATURES
D
D
D
D
D
D
D
D
Fault and Overvoltage Protection
All Channels Off When Power Off
Latchup-Proof
Fast Switching鈥擳
A
: 200 ns
Break-Before-Make Switching
Low On-Resistance: 180
W
Low Power Consumption: 3 mW
TTL and CMOS Compatible Inputs
BENEFITS
D
D
D
D
D
D
Improved Ruggedness
Power Loss Protection
Prevents Adjacent Channel Crosstalk
Standard Logic Interface
Superior Accuracy
Fast Settling Time
APPLICATIONS
D
D
D
D
D
Data Acquisition Systems
Industrial Process Control Systems
Avionics Test Equipment
High-Rel Control Systems
Telemetry
DESCRIPTION
The DG458 and DG459 are 8-channel single-ended and
4-channel differential analog multiplexers, respectively,
incorporating fault protection. A series n-p-n MOSFET
structure provides device and signal-source protection in the
event of power loss or overvoltages. Under fault conditions the
multiplexer input (or output) appears as an open circuit and
only a few nanoamperes of leakage current will flow. This
protects not only the multiplexer and the circuitry following it,
but also protects the sensors or signal sources which drive the
multiplexer.
The DG458 and DG459 can withstand continuous overvoltage
inputs up to
"35
V. All digital inputs have TTL compatible logic
thresholds. Break-before-make operation prevents channel-
to-channel interference.
The DG458 and DG459 are improved pin-compatible
replacements for HI-508A/509A and MAX358/359
multiplexers.
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
DG458
Dual-In-Line
A
0
EN
V鈥?/div>
S
1
S
2
S
3
S
4
D
A
1
A
2
GND
V+
S
5
S
6
S
7
S
8
A
0
EN
V鈥?/div>
S
1a
S
2a
S
3a
S
4a
D
a
DG459
Dual-In-Line
A
1
GND
V+
S
1b
S
2b
S
3b
S
4b
D
b
1
2
3
4
5
6
7
8
Decoders/Drivers
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
Decoders/Drivers
16
15
14
13
12
11
10
9
Top View
Top View
Document Number: 70064
S-52433鈥擱ev. F, 06-Sep-99
www.vishay.com
S
FaxBack 408-970-5600
5-1

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