Logic - Signal Switches, Multiplexers, Decoders

Image Part Number Description / PDF Quantity Rfq
MAX4957ETB+

MAX4957ETB+

Analog Devices, Inc.

DPDT SWITCH, MULTIPLEX HIGH-SPEE

0

MAX4646EUT+

MAX4646EUT+

Analog Devices, Inc.

SPDT ANALOG SWITCH

10295

MAX4543EUA-T

MAX4543EUA-T

Analog Devices, Inc.

DUAL SPST ANALOG SWITCH

5000

MUX240036Q

MUX240036Q

Analog Devices, Inc.

3718363-148 IC

914

MAX4636EUB-TG069

MAX4636EUB-TG069

Analog Devices, Inc.

DUAL SPDT ANALOG SWITCH

2500

MAX4958EBC+T

MAX4958EBC+T

Analog Devices, Inc.

DPDT SWITCH, MULTIPLEX HIGH-SPEE

5000

MAX4524EUB-TG068

MAX4524EUB-TG068

Analog Devices, Inc.

LOW-VOLTAGE, SINGLE-SUPPLY MUX

6000

DS2405AR-100-550/T

DS2405AR-100-550/T

Analog Devices, Inc.

DS2405 ADDRESSABLE SWITCH

29820

MAX4992ELB+

MAX4992ELB+

Analog Devices, Inc.

MAX4992 DUAL-SPDT ANALOG SWITCH

2575

MAX4781EUE

MAX4781EUE

Analog Devices, Inc.

MAX4781 HIGH-SPEED, ANALOG MUX

0

MAX4634ETB-T

MAX4634ETB-T

Analog Devices, Inc.

4-CH ANALOG MUX

84900

MAX4624EUT

MAX4624EUT

Analog Devices, Inc.

SPDT ANALOG SWITCH

0

SW2010068S

SW2010068S

Analog Devices, Inc.

381506-1

0

DG442EEE

DG442EEE

Analog Devices, Inc.

QUAD, SPST ANALOG SWITCH

570

DG508ACK-C30080

DG508ACK-C30080

Analog Devices, Inc.

DG508 MONOLITHIC CMOS ANALOG MUX

0

MAX9390EHJ+T

MAX9390EHJ+T

Analog Devices, Inc.

IC CROSSPOINT SW 2 X 2:2 32TQFP

27500

MAX4854HLETE+

MAX4854HLETE+

Analog Devices, Inc.

MAX4854 QUAD SPST

11832

MAX1873SEEE-T

MAX1873SEEE-T

Analog Devices, Inc.

SWITCH-MODE LI CHARGER CONTROL

0

MAX4617EGE

MAX4617EGE

Analog Devices, Inc.

HIGH-SPEED, LOW VOLTAGE, CMOS AN

14853

MAX9390EHJ+

MAX9390EHJ+

Analog Devices, Inc.

IC CROSSPOINT SW 2 X 2:2 32TQFP

720

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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