Logic - Signal Switches, Multiplexers, Decoders

Image Part Number Description / PDF Quantity Rfq
MAX6685AU75H

MAX6685AU75H

Analog Devices, Inc.

DUAL TEMPERATURE SWITCH

3631

MAX465ENG

MAX465ENG

Analog Devices, Inc.

TWO-CH TRIPLE RGB SWITCH + BUFF

719

MAX6503UKN045

MAX6503UKN045

Analog Devices, Inc.

MICROPOWER TEMPERATURE SWITCH

443

ADG3247BCPZ

ADG3247BCPZ

Analog Devices, Inc.

IC BUS SWITCH 8 X 1:1 40LFCSP

24644

MAX337CUI

MAX337CUI

Analog Devices, Inc.

DUAL 8-CH LOW-LEAKAGE ANALOG MUX

630

MAX6501UKP085-T

MAX6501UKP085-T

Analog Devices, Inc.

MICROPOWER TEMPERATURE SWITCH

0

MAX465CNG

MAX465CNG

Analog Devices, Inc.

TWO-CH TRIPLE RGB SWITCH + BUFF

611

ADG3247BRU-REEL7

ADG3247BRU-REEL7

Analog Devices, Inc.

IC BUS SWITCH 8 X 1:1 38TSSOP

3348

MAX4957EBC+

MAX4957EBC+

Analog Devices, Inc.

DPDT SWITCH, MULTIPLEX HIGH-SPEE

2010

MAX322CUA-TG069

MAX322CUA-TG069

Analog Devices, Inc.

DUAL-SUPPLY, SPST ANALOG SWITCH

5000

MAX4723EUA

MAX4723EUA

Analog Devices, Inc.

4.5 OHMS DUAL SPST ANALOG SWITCH

4270

MAX4742EUA

MAX4742EUA

Analog Devices, Inc.

MAX4741 DUAL SPST ANALOG SWITCH

11207

MAX4722EUA

MAX4722EUA

Analog Devices, Inc.

4.5 OHMS DUAL SPST ANALOG SWITCH

10130

DG201ABJ

DG201ABJ

Analog Devices, Inc.

DG201 QUAD SPST ANALOG SWITCH

879

DG418LEUA

DG418LEUA

Analog Devices, Inc.

SPST ANALOG SWITCH

38250

MAX4720ELT+

MAX4720ELT+

Analog Devices, Inc.

4.5 OHMS DUAL SPST ANALOG SWITCH

65605

DG442CEE

DG442CEE

Analog Devices, Inc.

QUAD, SPST ANALOG SWITCH

654

DG441CEE

DG441CEE

Analog Devices, Inc.

QUAD, SPST ANALOG SWITCH

1408

MAX9384EGP

MAX9384EGP

Analog Devices, Inc.

ECL/PECL DUAL DIFFERENTIAL 2:1 M

4473

DG417LEUA

DG417LEUA

Analog Devices, Inc.

SPST ANALOG SWITCH

3656

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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