Description: CMOS Quad 2-Input Exclusive-OR Gate Features: – Low power consumption – High noise immunity – High speed operation – Low input current – High fan-out capability – High noise immunity Application: – Signal gating – Logic operations – Data transmission – Data encoding/decoding – Memory address decoding – Boolean functions (For reference only)
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CD4008’s pdf picture 1
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Substitute (equivalent) Product
Product Name Description
CD4011 Quad 2-Input NAND Gates with Schmitt-Trigger Inputs
CD4013 Dual D-Type Flip-Flops with Set and Reset
CD4023 Triple 3-Input NAND Gates with Set and Reset
CD4070 Quad 2-Input XOR Gates
CD4508 Octal D-Type Flip-Flop with Clear and Preset
Product Usage
The CD4008 is a CMOS integrated circuit that contains four 2-input AND gates and one 3-input NAND gate. This versatile chip is used in various digital circuits and systems where logic operations are required. Here are some common applications and circuits that utilize the CD4008:
Digital Logic Circuits:
Binary Adders: The CD4008 can be used to build binary adders, which are essential components in arithmetic logic units (ALUs) of microprocessors.
Decoders and Encoders: These circuits can be constructed using the AND and NAND gates provided by the CD4008.
Multiplexers and Demultiplexers: The logic gates can be used to create multiplexing and demultiplexing circuits, which are useful for data routing in digital systems.
Control Systems:
Sequence Controllers: The CD4008 can be used to implement control logic for sequence controllers, which manage the order of operations in industrial processes.
State Machines: Finite state machines can be designed using the logic gates to perform specific tasks based on input conditions.
Memory Circuits:
Memory Address Decoding: The AND and NAND gates can be used to decode memory addresses, ensuring that the correct memory location is accessed during read and write operations.
Signal Processing:
Data Validation: The logic gates can be used to validate data signals, ensuring that they meet certain criteria before being processed further.
Error Detection and Correction: Circuits for detecting and correcting errors in digital data can be built using the CD4008.
Educational and Hobby Projects:
Logic Gates Experiments: The CD4008 is often used in educational settings to teach the basics of digital logic and circuit design.
DIY Digital Circuits: Hobbyists and makers use the CD4008 to build custom digital circuits for various projects, such as simple calculators, LED controllers, and more.
Microcontroller Peripherals:
I/O Expansion: The CD4008 can be used to expand the input/output capabilities of microcontrollers by creating additional logic circuits.
Communication Circuits:
Serial-to-Parallel Converters: These converters can be built using the CD4008 to transform serial data into parallel format, which is useful in communication interfaces.
By leveraging the AND and NAND gates provided by the CD4008, designers can create a wide range of digital circuits that perform various functions in electronics and computer systems.

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