SEARCH
— IC芯片 | 连接器 | 传感器 | 被动器件 —

Logic type signal switch, multiplexer, and encoder ICs are used for routing and selection of electrical signals used to represent data in digital format. They differ from similar products designed for use with analog signals in that they are designed to preserve information represented as one of two electrical states, rather than as an infinitely variable quantity within two outer limits.
| Select products | Mfr | Description | Package | Supplier Device Package | Mounting Type | Series | Operating Temperature |
|---|---|---|---|---|---|---|---|
![]() MC74AC139DR2G $1.13 | onsemi | IC DECODER/DEMUX 1X2:4 16SOIC | Tape & Reel (TR),Cut Tape (CT) | 16-SOIC | Surface Mount | 74AC | -40°C ~ 85°C |
![]() MC74AC139DT $0.18 | onsemi | IC DCODER/DEMUX DUAL 1:4 16TSSOP | Bulk | 16-TSSOP | Surface Mount | 74AC | -40°C ~ 85°C |
| onsemi | IC DECODER/DEMUX 1X2:4 16TSSOP | Tape & Reel (TR) | 16-TSSOP | Surface Mount | 74AC | -40°C ~ 85°C | |
![]() MC74AC139DTR2G $1.03 | onsemi | IC DECODER/DEMUX 1X2:4 16TSSOP | Tape & Reel (TR),Cut Tape (CT) | 16-TSSOP | Surface Mount | 74AC | -40°C ~ 85°C |
![]() MC74AC139MELG $0.26 | onsemi | IC DECODER/DEMUX 1X2:4 16SOEIAJ | Tape & Reel (TR) | 16-SOEIAJ | Surface Mount | 74AC | -40°C ~ 85°C |
![]() MC74AC139ML1 $0.17 | onsemi | DECODER/DRIVER, CMOS, PDSO16 | Bulk | - | - | * | - |
![]() MC74AC139N $0.31 | onsemi | IC DECODER/DEMUX 1X2:4 16DIP | Tube | 16-PDIP | Through Hole | 74AC | -40°C ~ 85°C |
![]() MC74AC139NG $0.31 | onsemi | IC DECODER/DEMUX 1X2:4 16DIP | Tube,Tube | 16-PDIP | Through Hole | 74AC | -40°C ~ 85°C |

Select a bridge rectifier by reverse voltage, capacitor charging current, startup surge and cooling. Work through a stated DC voltage and ripple example.
Read More
Understand how oscillators generate timing signals, how they differ from crystals, and which frequency, output and stability specs matter when choosing one.
Read More
Date: May 13, 2026 The global memory industry is facing an unprecedented supply crunch in legacy MLC NAND Flash. Leading manufacturers including Samsung Electronics…
Read More
Selecting the right microcontroller (MCU) isn’t just about specs—it’s about balancing performance, power, cost, and supply chain reliability. As an engineer, you’ve probably faced…
Read More
In the vast landscape of memory technology, EEPROM (Electrically Erasable Programmable Read-Only Memory) often plays the unsung hero. While NAND Flash grabs headlines for…
Read More
ChipApex – May 8, 2026 Texas Instruments (TI), the global leader in analog and embedded semiconductors, has officially notified customers of an upcoming company-wide…
Read More
The multilayer ceramic capacitor (MLCC) market has fallen into a severe structural supply crunch in the third quarter of 2026, driven by explosive demand…
Read More
Learn what a battery BMS does, how protection differs from charging, and which pack specifications to check when sourcing BMS components through ChipApex.
Read More
Learn what an integrated circuit is, how ICs work, the main types and the specs to check before choosing a part for your design…
Read MoreMay 8, 2026 – Eindhoven, Netherlands NXP Semiconductors (NXPI), a global leader in automotive and industrial semiconductor solutions, has officially notified its worldwide channel…
Read More
Vishay Intertechnology, Inc., a global leader in discrete semiconductors and passive electronic components, has officially announced a price adjustment for its Metal-Oxide-Semiconductor Field-Effect Transistors…
Read More
The global memory market is entering an unprecedented supply-constrained phase as soaring demand from artificial intelligence (AI) infrastructure collides with strategic capacity reallocations by…
Read More