DG428

Manufacturer Part NumberDG428
DescriptionSingle 8-ch/differential 4-ch Latchable Analog Multiplexers
ManufacturerVishay
DG428 datasheet
 


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Single 8-Ch/Differential 4-Ch Latchable Analog Multiplexers
Low r
: 55
DS(on)
Low Charge Injection: 1 pC
On-Board TTL Compatible
Address Latches
High Speed—t
: 160 ns
TRANS
Break-Before-Make
Low Power Consumption: 0.3 mW
The DG428/DG429 analog multiplexers have on-chip address
and control latches to simplify design in microprocessor based
applications. Break-before-make switching action protects
against momentary crosstalk of adjacent input signals.
The DG428 selects one of eight single-ended inputs to a
common output, while the DG429 selects one of four
differential inputs to a common differential output.
An on channel conducts current equally well in both directions.
In the off state each channel blocks voltages up to the power
supply rails. An enable (EN) function allows the user to reset
the multiplexer/demultiplexer to all switches off for stacking
DG428
Dual-In-Line
WR
1
18
A
2
17
0
Latches
EN
3
16
Decoders/Drivers
V–
4
15
S
5
14
1
S
6
13
2
S
7
12
3
S
8
11
4
9
10
D
Top View
Document Number: 70063
S-52433—Rev. J, 06-Sep-99
Improved System Accuracy
Data Acquisition Systems
Microprocessor Bus Compatible
Automatic Test Equipment
Easily Interfaced
Avionics and Military Systems
Reduced Crosstalk
Communication Systems
High Throughput
Microprocessor-Controlled
Analog Systems
Improved Reliability
Medical Instrumentation
several devices. All control inputs, address (A
(EN) are TTL compatible over the full specified operating
temperature range.
The silicon-gate CMOS process enables operation over a
wide range of supply voltages. The absolute maximum voltage
rating is extended to 44 V. Additionally, single supply operation
is also allowed and an epitaxial layer prevents latchup.
On-board TTL-compatible address latches simplify the digital
interface design and reduce board space in bus-controlled
systems such as data acquisition systems, process controls,
avionics, and ATE.
RS
A
1
A
EN
4
2
V–
5
GND
S
6
1
V+
S
7
2
S
5
S
8
3
S
6
S
7
S
8
DG428/429
Vishay Siliconix
) and enable
x
DG428
PLCC
3
2
1
20
19
18
A
Latches
2
GND
17
Decoders/Drivers
V+
16
S
15
5
14
S
6
9
10
11
12
13
Top View
www.vishay.com FaxBack 408-970-5600
5-1

DG428 Summary of contents

  • Page 1

    ... Break-before-make switching action protects against momentary crosstalk of adjacent input signals. The DG428 selects one of eight single-ended inputs to a common output, while the DG429 selects one of four differential inputs to a common differential output channel conducts current equally well in both directions. ...

  • Page 2

    ... X X None (latches cleared) Transparent Operation X X None Part Number Temp Range DG428DJ DG428DN DG428DN – DG429 PLCC GND Latches 17 V Decoders/Drivers ...

  • Page 3

    ... Room DG429 Room MHz DG428 Room DG429 Room DG428/429 Vishay Siliconix 470 mW 900 mW 800 450 exceeding V+ or V– will be clamped by internal Suffix D Suffix –55 to 125 C – ...

  • Page 4

    ... Room Full EN Room DG428 Full Room DG429 EN Full Room DG428 S D Full 2 0.8 V Room AL DG429 V = 2.4 V Full 2.4 V Full Full 2 ...

  • Page 5

    ... 2 Full Full S See Figure Full See Figure 3 Full Room 100% DG428/429 Vishay Siliconix A Suffix D Suffix –55 to 125 C – Typ Min Max Min Max Unit 100 100 100 100 ...

  • Page 6

    ... DG428/429 Vishay Siliconix r vs. V and Supply Voltage DS(on) D 140 120 100 –20 –16 –12 –8 – – Drain Voltage (V) D Single Supply r vs. V DS(on) 200 V+ = 7.5 V 160 120 – Drain Voltage (V) ...

  • Page 7

    ... –2 –4 –6 – 2.5 2 1 105 125 0 DG428/429 Vishay Siliconix Charge Injection vs. Analog Voltage V– V– = –15 V –10 – – Source Voltage ( GND I– ...

  • Page 8

    ... RS V– V– 50 20 FIGURE All S and D a DG428 DG429 GND WR V– 50 300 –15 V www.vishay.com FaxBack 408-970-5600 5 Level Decode Shift ...

  • Page 9

    ... Logic Input 35 pF 300 Switch Output – 300 FIGURE 6. Enable t /t Time ON OFF DG428/429 Vishay Siliconix t < < 50% 90% 10 TRANS TRANS < < 50% ...

  • Page 10

    ... DG428/429 Vishay Siliconix + +2 Remaining Switches RS DG428 DG429 GND V– 300 – Remaining Switches DG42 DG429 GND V– 300 – ...

  • Page 11

    ... At this time the data on the DATA BUS (that will determine which switch to close) is stabilizing. When the WR signal returns to the high state, (positive edge) the input latches of the DG428 save the data from the DATA BUS. The coded information in the A and the appropriate switch is turned on. ...

  • Page 12

    ... Information contained herein is intended to provide a product description only. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Vishay's terms and conditions of sale for such products, Vishay assumes no liability whatsoever, and disclaims any express or implied warranty, relating to sale and/or use of Vishay products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright, or other intellectual property right ...