DG458, DG459
Vishay Siliconix
Fault-Protected Single 8-Ch/Differential 4-Ch Analog Multiplexers
DESCRIPTION
FEATURES
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Fault and Overvoltage Protection
All Channels Off When Power Off
Latchup-Proof
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.
Fast Switching - tA: 200 ns
Break-Before-Make Switching
Low On-Resistance: 180 W
Low Power Consumption: 3 mW
TTL and CMOS Compatible Inputs
BENEFITS
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Improved Ruggedness
Power Loss Protection
Prevents Adjacent Channel Crosstalk
Standard Logic Interface
Superior Accuracy
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.
Fast Settling Time
The DG458 and DG459 are improved pin-compatible
replacements for HI-508A/509A and MAX358/359
multiplexers.
APPLICATIONS
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Data Acquisition Systems
Industrial Process Control Systems
Avionics Test Equipment
High-Rel Control Systems
Telemetry
FUNCTIONAL BLOCK DIAGRAM AND PIN CONFIGURATION
DG458
DG459
Dual-In-Line
Dual-In-Line
A
A
1
A
A
A
0
0
1
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
EN
V-
GND
V+
EN
V-
2
Decoders/Drivers
Decoders/Drivers
GND
V+
S
S
1b
S
1
1a
2a
S
S
S
S
2b
S
2
S
5
S
3b
S
3
S
6
3a
4a
S
4b
S
4
S
7
D
D
b
D
S
8
a
Top View
Top View
* Pb containing terminations are not RoHS compliant, exemptions may apply
Document Number: 70064
S11-1029–Rev. H, 23-May-11
www.vishay.com
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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