74LS158 عبارة عن دائرة متكاملة رباعية 2 إلى 1، وهي مصممة للاختيار بين مصدرين للبيانات بأربعة بتات وإخراج أحدهما بناءً على إدخال محدد. تتميز بأربعة أجهزة متعددة مستقلة ذات مدخلين، كل منها يتميز باستهلاك منخفض للطاقة وأداء عالي السرعة. تعمل الدائرة المتكاملة بمصدر طاقة قياسي 5 فولت ولديها مدخلات تمكين نشطة منخفضة، مما يجعلها مثالية لتوجيه البيانات واختيارها في الأنظمة الرقمية. تُستخدم 74LS158 بشكل شائع في التطبيقات التي تتطلب تبديل البيانات واختيار الإشارة والإرسال المتعدد في المعالجات الدقيقة والدوائر الرقمية.
The 74LS158 is a quad 2-to-1 multiplexer IC, designed to select between two 4-bit data sources and output one of them based on a select input. It features four independent 2-input multiplexers, each with low power consumption and high-speed performance. The IC operates with a standard 5V power supply and has active-low enable inputs, making it ideal for data routing and selection in digital systems. The 74LS158 is commonly used in applications requiring data switching, signal selection, and multiplexing in microprocessor and digital circuits.
Where the 74LS158 is used:
Data Routing/Selection:
It selects between two sets of 4-bit data and routes the selected data to the output. This is useful in systems where multiple data sources need to be selected and directed to a common bus or processor input.
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Microprocessor Systems:
In microprocessor-based systems, the 74LS158 can be used to select between different memory banks, input devices, or registers.
Digital Signal Multiplexing:
The multiplexer is used in signal multiplexing, where multiple signals are funneled into a single line, reducing the number of data lines required.
Control Circuits:
The 74LS158 is used in control circuits to switch between control signals, based on an external control input, to determine which signal gets passed through.
Arithmetic Logic Units (ALUs):
In ALU designs, it can help select different data paths or operands, depending on the operations being performed.
Key Features:
4x 2-to-1 multiplexer.
Low-power Schottky TTL.
Complementary outputs (active LOW output).
Controlled by a select input.
The 74LS158 is commonly found in systems requiring efficient switching between two data sources or signals.
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