Logic - Signal Switches, Multiplexers, Decoders

Part Number	Description / PDF	Quantity
MAX4573EWI Analog Devices, Inc.	CLICKLESS AUDIO/VIDEO SWITCH	845
MAX9767ETJ Analog Devices, Inc.	MAX9767 AUDIO AMPLIFIER	1962
MAX324ESA Analog Devices, Inc.	DUAL-SUPPLY, SPST ANALOG SWITCH	10077
MAX4701EUE Analog Devices, Inc.	MAX4701 DUAL DPDT ANALOG SWITCH	870
MAX4311ESD-T Analog Devices, Inc.	MULTICHAN, VIDEO MUX-AMP	4745
MAX4574CWI Analog Devices, Inc.	CLICKLESS AUDIO/VIDEO SWITCH	769
ADN4605ABPZ Analog Devices, Inc.	IC CROSSPOINT SW 1X40:40 352BGA	20
MAX322CPA Analog Devices, Inc.	DUAL-SUPPLY, SPST ANALOG SWITCH	5607
ADG3247BRUZ Analog Devices, Inc.	IC BUS SWITCH 8 X 1:1 38TSSOP	523
MAX314LESE Analog Devices, Inc.	QUAD, R-R, SPST ANALOG SWITCH	3449
MAX6503UKN035-T Analog Devices, Inc.	MICROPOWER TEMPERATURE SWITCH	0
DG409CY Analog Devices, Inc.	DUAL 4-CHANNEL ANALOG MUX	1412
DG201ABJ-2 Analog Devices, Inc.	DG201 QUAD SPST ANALOG SWITCH	215
DG308AAK Analog Devices, Inc.	DG308 QUAD, SPST ANALOG SWITCH	731
MAX314LEPE Analog Devices, Inc.	QUAD, R-R, SPST ANALOG SWITCH	1151
DG509ADJ Analog Devices, Inc.	DG509 MONOLITHIC CMOS ANALOG MUX	0
MAX4752EGE Analog Devices, Inc.	MAX4752 QUAD SPST ANALOG SWITCH	0
MAX4639EGE Analog Devices, Inc.	DUAL 4:1 ANALOG MUX	3806
MAX4510EUT Analog Devices, Inc.	R-R SPST ANALOG SWITCH	5980
DG202DY Analog Devices, Inc.	DG202 QUAD SPST ANALOG SWITCH	374

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.