Logic ICs

Logic ICs are semiconductor devices that perform basic logical operations on one or more digital input signals, represented by 1s and 0s (or High and Low), to produce a digital output signal. These ICs play a crucial role in data processing and are essential components in electronic devices such as computers, microcontrollers, calculators, and telecommunications equipment.
Logic ICs

Logic Families:
A logic family refers to a group of digital integrated circuits that contain electronic logic gates designed using a specific digital logic configuration. These ICs typically share compatible logic levels and power supply characteristics within the family. Examples include Encoder/Decoders, Multiplexer/Demultiplexers, Translators, Gates, Comparators, and Bus Drivers.

Dominant Logic IC Families:
The two main families of modern digital electronics are the ‘4000-series’ CMOS ICs (low-speed) and the ’74-series’ TTL and CMOS ICs (high-speed). The 74-series, originally based on TTL technology, emerged in the 1970s and became an instant success due to its simplicity in connecting ICs and the ease of designing complex digital systems. It remains a standard in both commercial and military applications, with 74 and 54 prefixes indicating the two grades.

Types of Logic ICs:

  • Buffers & Line Drivers
  • Bus Receivers/Transceivers
  • Counter Shift Registers
  • Encoders, Decoders, Multiplexers & Demultiplexers
  • Flip Flops, Latches, Inverters
  • Logic Gates, Comparators, Adders & Subtractors
  • Monostable Multivibrators, Multipliers/Dividers
  • Registers, Parity Functions, Serial-to-Parallel Converters
  • Specialty Function Logic ICs
  • Voltage Level Translators

Specialty Logic ICs:
These ICs offer specialized digital and logic functions, including high-performance phased-locked loops (PLLs) for RF signaling. They come in various packaging and technology options.

Logic Gates, Timers, and Shift Registers:
Logic gates are the foundation of more complex ICs, and can be packaged independently or in small groups. These gates can be interconnected to create timers, counters, latches, and shift registers. These components are available in DIP, SOIC, and SSOP packages.

Microcontrollers, Microprocessors, and FPGAs:
Microcontrollers, microprocessors, and FPGAs are highly complex ICs containing thousands to billions of transistors. Their functionality ranges from simple 8-bit microcontrollers (e.g., ATmega328) to powerful 64-bit multi-core processors found in computers. These ICs are often the largest in a circuit and come in packages like DIP, QFN, and BGA, with pin counts from 8 to over 1,000.

Sensors:
Modern sensors, such as temperature sensors and accelerometers, are also integrated circuits. They are typically smaller than microcontrollers, with pin counts ranging from 3 to 20, and are often found in QFP, QFN, and BGA packages. DIP sensor ICs are becoming less common as packaging technology advances.

Logic ICs are available at IBS Electronics from top industry manufacturers. IBS Electronics also serves as an authorized distributor for several leading Logic IC brands.