Logic - Signal Switches, Multiplexers, Decoders

Image Part Number Description / PDF Quantity Rfq
HI1-0201-9

HI1-0201-9

Analog Devices, Inc.

HI10201 QUAD SPST ANALOG SWITCH

899

DG509AEWE

DG509AEWE

Analog Devices, Inc.

DG509 MONOLITHIC CMOS ANALOG MUX

1058

MAX6512UT085-T

MAX6512UT085-T

Analog Devices, Inc.

REMOTE TEMPERATURE SWITCH

2500

MAX4695EUB-T

MAX4695EUB-T

Analog Devices, Inc.

SPDT ANALOG SWITCH IN THIN QFN

2500

MAX4780ETE

MAX4780ETE

Analog Devices, Inc.

MAX4780 QUAD 2:1 ANALOG MUX

90000

ADG3245BRU

ADG3245BRU

Analog Devices, Inc.

IC BUS SWITCH 8 X 1:1 20TSSOP

47708

MAX6501CMP065

MAX6501CMP065

Analog Devices, Inc.

MICROPOWER TEMPERATURE SWITCH

2200

MAX1606EUA-TG069

MAX1606EUA-TG069

Analog Devices, Inc.

28V INTERNAL SWITCH LCD BIAS SUP

25000

DG381ABA

DG381ABA

Analog Devices, Inc.

GENERAL PURPOSE ANALOG SWITCH

1235

ADG3247BRUZ-REEL

ADG3247BRUZ-REEL

Analog Devices, Inc.

16-BIT, 2-PORT BUS SWITCH

2007

MX7501JQ

MX7501JQ

Analog Devices, Inc.

MX7501 LOW-POWER, ANALOG MUX

0

MAX4736EGC

MAX4736EGC

Analog Devices, Inc.

MAX4736 DUAL SPDT ANALOG SWITCH

3256

MAX320ESA

MAX320ESA

Analog Devices, Inc.

DUAL-SUPPLY, SPST ANALOG SWITCH

0

MAX465CWG

MAX465CWG

Analog Devices, Inc.

TWO-CH TRIPLE RGB SWITCH + BUFF

1776

MAX4581EPE

MAX4581EPE

Analog Devices, Inc.

LOW-VOLTAGE ANALOG MUX/SWITCH

4085

MAX1607ESA-TG074

MAX1607ESA-TG074

Analog Devices, Inc.

USB CURRENT-LIMITED SWITCH IN PI

4000

AD8158ACPZ

AD8158ACPZ

Analog Devices, Inc.

IC MUX/DEMUX 4 X 2:1 100LFCSP

38

AD8150AST

AD8150AST

Analog Devices, Inc.

IC CROSSPOINT SW 1X33:17 184LQFP

1571

DG419LDJ

DG419LDJ

Analog Devices, Inc.

SPDT ANALOG SWITCH

4951

MAX1681ESA-T

MAX1681ESA-T

Analog Devices, Inc.

SWITCHED-CAP VOLTAGE CONVERTER

2500

Logic - Signal Switches, Multiplexers, Decoders

1. Overview

Signal switches, multiplexers, and decoders are fundamental logic ICs used to manage signal routing and data selection in electronic systems. Signal switches control the flow of electrical signals, multiplexers select between multiple input signals, and decoders convert encoded signals into specific outputs. These components are critical in modern technologies such as telecommunications, computing, and industrial automation, enabling efficient data handling and system design simplification.

2. Main Types and Functional Classification

TypeFunctional FeaturesApplication Examples
Signal SwitchesDigital/analog switches with on/off controlAudio routing, power management
Multiplexers (MUX)2:1 to 16:1 channel selection, data bus sharingNetwork switches, sensor data aggregation
DecodersBinary-to-decimal, BCD-to-7-segment conversionMemory address decoding, display drivers

3. Structure and Composition

These ICs typically use CMOS or TTL technology with standard packages like DIP, SOP, and QFN. Internal components include transistor arrays, logic gates, and channel control circuits. For example, a 4-channel analog switch integrates four independent switching elements in a single package with common control lines.

4. Key Technical Specifications

ParameterDescriptionImportance
On-resistance (RON)Resistance in conducting stateImpacts signal integrity
BandwidthMaximum signal frequency supportedDetermines high-speed capability
Channel countNumber of independent pathsSystem scalability
Power consumptionQuiescent current and switching lossBattery life consideration
Propagation delaySignal transmission timeCritical for timing-sensitive systems

5. Application Areas

  • Telecommunications: Signal routing in base stations
  • Automotive: Sensor signal selection in ECUs
  • Consumer Electronics: HDMI switch boxes
  • Industrial: PLC signal conditioning
  • Computing: Memory address decoding in CPUs

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Features
TISN74CB3Q324510- RON, 2.3V-3.6V supply
Analog DevicesADG14124-channel switch, 165MHz bandwidth
NXP74HC1518:1 multiplexer, 70MHz operation
STMicroelectronicsCD4028BEBCD-to-decimal decoder, 18V rating

7. Selection Guidelines

  • Channel requirements: Match input/output count needs
  • Signal type: Choose analog/digital switches accordingly
  • Voltage compatibility: Ensure supply voltage matches system rails
  • Speed vs. power trade-off: High bandwidth increases consumption
  • Package constraints: Consider PCB space and thermal requirements

8. Industry Trends

Current developments focus on miniaturization (0.4mm pitch packages), lower on-resistance (<1 ), and integration with level-shifting functions. The rise of IoT and 5G drives demand for high-frequency switches (up to 10GHz) with sub-mW standby power. Advanced CMOS processes enable higher channel density while maintaining signal integrity in automotive-grade temperature ranges.

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