Logic - Signal Switches, Multiplexers, Decoders

Part Number	Description / PDF	Quantity
MAX1823BEUB Analog Devices, Inc.	DUAL USB SWITCH WITH AUTORESET	38803
MAX16802BEUA Analog Devices, Inc.	SWITCHED-CAP VOLTAGE CONVERTER	3755
MAX454EJD Analog Devices, Inc.	MAX454 CMOS VIDEO MUX/AMPLIFIER	0
MAX4764EBC Analog Devices, Inc.	AUDIO CLICKLESS SWITCH	8595
DG418LEUA-T Analog Devices, Inc.	SPST ANALOG SWITCH	2500
MAX4691EGE Analog Devices, Inc.	MAX4691 LOW-VOLTAGE 8:1 MUX	8223
MAX384CWN Analog Devices, Inc.	IC MULTIPLEXER 4 X 1:1 18SOIC	1920
MAX332MJE Analog Devices, Inc.	MAX332 QUAD SPST ANALOG SWITCH	788
MAX4639EUE Analog Devices, Inc.	DUAL 4:1 ANALOG MUX	2409
DG202CSE.C30341 Analog Devices, Inc.	DG202 QUAD SPST ANALOG SWITCH	1000
ADG3247BRU Analog Devices, Inc.	IC BUS SWITCH 8 X 1:1 38TSSOP	11906
MAX4694EBE Analog Devices, Inc.	MAX4694 QUAD SPDT SWITCH	16434
MAX4766BETA+ Analog Devices, Inc.	PROG CURRENT-LIMIT SWITCH	413
ADG202AKP-REEL Analog Devices, Inc.	QUAD SPST SWITCH	1000
MAX4626EUK Analog Devices, Inc.	SINGLE-SUPPLY SPST ANALOG SWITCH	1762
MAX4801CQI Analog Devices, Inc.	8-CHAN, ANALOG SWITCH	5488
DG406CWI Analog Devices, Inc.	16-CHANNEL ANALOG MUX	4891
ADG3246BCP Analog Devices, Inc.	IC BUS SWITCH 10 X 1:1 24LFCSP	10166
MAX4501CUK Analog Devices, Inc.	LOW-VOLTAGE, SPST ANALOG SWITCH	16285
MAX4655EUA Analog Devices, Inc.	SPST ANALOG SWITCH	104

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

Type	Functional Features	Application Examples
Signal Switches	Digital/analog switches with on/off control	Audio routing, power management
Multiplexers (MUX)	2:1 to 16:1 channel selection, data bus sharing	Network switches, sensor data aggregation
Decoders	Binary-to-decimal, BCD-to-7-segment conversion	Memory 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

Parameter	Description	Importance
On-resistance (R_ON)	Resistance in conducting state	Impacts signal integrity
Bandwidth	Maximum signal frequency supported	Determines high-speed capability
Channel count	Number of independent paths	System scalability
Power consumption	Quiescent current and switching loss	Battery life consideration
Propagation delay	Signal transmission time	Critical 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

Manufacturer	Representative Product	Key Features
TI	SN74CB3Q3245	10- R_ON, 2.3V-3.6V supply
Analog Devices	ADG1412	4-channel switch, 165MHz bandwidth
NXP	74HC151	8:1 multiplexer, 70MHz operation
STMicroelectronics	CD4028BE	BCD-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.