Logic - Signal Switches, Multiplexers, Decoders

Image Part Number Description / PDF Quantity Rfq
ADG3242BRJ-R2

ADG3242BRJ-R2

Analog Devices, Inc.

IC BUS SWITCH 2 X 1:1 SOT23-8

605

MAX312CSE-T

MAX312CSE-T

Analog Devices, Inc.

QUAD, R-R, SPST ANALOG SWITCH

2500

MAX154BENG+

MAX154BENG+

Analog Devices, Inc.

ANALOG CIRCUIT, 1 FUNC, CMOS, PD

2040

MAX321ESA

MAX321ESA

Analog Devices, Inc.

DUAL-SUPPLY, SPST ANALOG SWITCH

914

MAX4794ETT

MAX4794ETT

Analog Devices, Inc.

300MA, CURRENT-LIMIT SWITCH

9488

MAX4524LETB

MAX4524LETB

Analog Devices, Inc.

LOW-VOLTAGE, SINGLE-SUPPLY MUX

955

MAX4750EUD

MAX4750EUD

Analog Devices, Inc.

MAX4750 DUAL SPDT ANALOG SWITCH

349

MAX312CUE

MAX312CUE

Analog Devices, Inc.

QUAD, R-R, SPST ANALOG SWITCH

0

MAX4583ASE

MAX4583ASE

Analog Devices, Inc.

LOW-VOLTAGE ANALOG SWITCH

0

MAX4523EUE

MAX4523EUE

Analog Devices, Inc.

QUAD SPST ANALOG SWITCH

0

MAX4782EGE

MAX4782EGE

Analog Devices, Inc.

MAX4782 HIGH-SPEED, ANALOG MUX

2060

MAX4614CUD-T

MAX4614CUD-T

Analog Devices, Inc.

QUAD, SPST ANALOG SWITCH

5000

DG506AEWI

DG506AEWI

Analog Devices, Inc.

DG506 MONOLITHIC ANALOG MUX

752

DG212CSE

DG212CSE

Analog Devices, Inc.

DG212 QUAD SPST ANALOG SWITCH

2508

MAX4620ESD

MAX4620ESD

Analog Devices, Inc.

QUAD, SPST ANALOG SWITCH

1365

MAX4571EAI

MAX4571EAI

Analog Devices, Inc.

CLICKLESS AUDIO/VIDEO SWITCH

228

DG507ACJ

DG507ACJ

Analog Devices, Inc.

DG507 MONOLITHIC ANALOG MUX

58

ADG3243BRJZ-REEL7

ADG3243BRJZ-REEL7

Analog Devices, Inc.

IC BUS SWITCH 1 X 1:1 SOT23-8

1849

MAX1931EUB

MAX1931EUB

Analog Devices, Inc.

SWITCH FOR TWO USB PORTS

188549

MAX6501UKP095-T

MAX6501UKP095-T

Analog Devices, Inc.

MICROPOWER TEMPERATURE SWITCH

20000

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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