DG428_08 VISHAY [Vishay Siliconix], DG428_08 Datasheet

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DG428_08

Manufacturer Part Number
DG428_08
Description
Single 8-Ch/Differential 4-Ch Latchable Analog Multiplexers
Manufacturer
VISHAY [Vishay Siliconix]
Datasheet
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
Document Number: 70063
S-52433—Rev. J, 06-Sep-99
Low r
Low Charge Injection: 1 pC
On-Board TTL Compatible
Address Latches
High Speed—t
Break-Before-Make
Low Power Consumption: 0.3 mW
Single 8-Ch/Differential 4-Ch Latchable Analog Multiplexers
DS(on)
WR
EN
V–
A
S
S
S
S
D
0
1
2
3
4
: 55
TRANS
1
2
3
4
5
6
7
8
9
Decoders/Drivers
: 160 ns
Dual-In-Line
Top View
DG428
Latches
18
17
16
15
14
13
12
10
11
RS
A
A
GND
V+
S
S
S
Improved System Accuracy
Microprocessor Bus Compatible
Easily Interfaced
Reduced Crosstalk
High Throughput
Improved Reliability
S
1
2
5
6
7
8
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.
EN
V–
S
S
S
1
2
3
4
5
6
7
8
Data Acquisition Systems
Automatic Test Equipment
Avionics and Military Systems
Communication Systems
Microprocessor-Controlled
Analog Systems
Medical Instrumentation
3
9
Decoders/Drivers
10
2
Top View
DG428
Latches
PLCC
11
1
www.vishay.com FaxBack 408-970-5600
12
20
19
13
Vishay Siliconix
18
17
16
15
14
DG428/429
A
GND
V+
S
S
2
5
6
x
) and enable
5-1

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DG428_08 Summary of contents

Page 1

Single 8-Ch/Differential 4-Ch Latchable Analog Multiplexers Low DS(on) Low Charge Injection 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 ...

Page 2

DG428/429 Vishay Siliconix DG429 Dual-In-Line and SOIC Latches EN 3 V– Decoders/Drivers Top View 8-Channel Single-Ended Multiplexer A A ...

Page 3

Voltage Referenced to V– ...

Page 4

DG428/429 Vishay Siliconix V– = – 2.4 Parameter Symbol Minimum Input Timing Requirements Write Pulse Width Data Set Up time ...

Page 5

Parameter Symbol Minimum Input Timing Requirements Write Pulse Width Data Set Up Time Data Hold Time Reset Pulse Width t RS Power Supplies Positive Supply Current ...

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 ...

Page 7

Switching Times vs. Single Supply 350 V– 300 250 200 t TRANS 150 t ON 100 t OFF – Positive Supply (V) Off-Isolation vs. Frequency –140 –120 –100 –80 –60 –40 ...

Page 8

DG428/429 Vishay Siliconix V+ V GND REF V– V– 50 20 ...

Page 9

+2 – DG428 GND WR V– 50 300 – ...

Page 10

DG428/429 Vishay Siliconix + +2 Remaining Switches RS DG428 DG429 GND V– 300 –15 V +15 V ...

Page 11

The internal structure of the DG428/DG429 includes a 5-V logic interface with input protection circuitry followed by a latch, level shifter, decoder and finally the switch constructed with parallel n- and p-channel MOSFETs (see Figure 1). The input protection on ...

Page 12

All product specifications and data are subject to change without notice. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or ...

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