Texas Instruments
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SN74LS194AD
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SN74LS194AD

Product Overview

Category

SN74LS194AD belongs to the category of integrated circuits (ICs).

Use

This IC is commonly used as a 4-bit bidirectional universal shift register.

Characteristics

  • 4-bit bidirectional shift register
  • TTL compatible inputs and outputs
  • Parallel and serial data transfer modes
  • Asynchronous master reset
  • Synchronous parallel load
  • Cascadable for larger word sizes

Package

SN74LS194AD is available in a 16-pin dual in-line package (DIP).

Essence

The essence of SN74LS194AD lies in its ability to perform bidirectional shifting and parallel loading of data, making it suitable for various applications requiring data manipulation.

Packaging/Quantity

SN74LS194AD is typically packaged in tubes or reels, with quantities varying based on customer requirements.

Specifications

  • Supply voltage: 4.75V to 5.25V
  • Operating temperature range: -55°C to +125°C
  • Input voltage high level: 2.0V min
  • Input voltage low level: 0.8V max
  • Output voltage high level: 2.7V min
  • Output voltage low level: 0.5V max
  • Maximum clock frequency: 25MHz

Detailed Pin Configuration

  1. SER (Serial Data Input)
  2. QA (Parallel Data Output A)
  3. QB (Parallel Data Output B)
  4. QC (Parallel Data Output C)
  5. QD (Parallel Data Output D)
  6. GND (Ground)
  7. MR (Master Reset)
  8. SH/LD (Shift/Load)
  9. CLK (Clock Input)
  10. QA (Parallel Data Input A)
  11. QB (Parallel Data Input B)
  12. QC (Parallel Data Input C)
  13. QD (Parallel Data Input D)
  14. VCC (Supply Voltage)
  15. QA (Serial Data Output A)
  16. QB (Serial Data Output B)

Functional Features

  • Bidirectional shifting: SN74LS194AD can shift data in both directions, allowing for versatile data manipulation.
  • Parallel loading: It supports parallel loading of data, enabling quick and efficient data transfer.
  • Asynchronous master reset: The IC can be reset asynchronously, clearing all internal registers to a known state.
  • Synchronous parallel load: Data can be loaded into the register synchronously with the clock signal.
  • Cascadable: Multiple SN74LS194AD ICs can be cascaded together to create larger word sizes.

Advantages and Disadvantages

Advantages

  • Versatile bidirectional shifting capability
  • TTL compatibility ensures easy integration with other digital circuits
  • Supports both parallel and serial data transfer modes
  • Asynchronous master reset allows for flexible control
  • Cascadable for expanding word size

Disadvantages

  • Limited maximum clock frequency of 25MHz
  • Requires external components for proper operation

Working Principles

SN74LS194AD operates based on the principles of sequential logic. It consists of flip-flops and combinational logic circuits that enable bidirectional shifting and parallel loading of data. The clock signal controls the shifting operation, while the shift/load input determines whether the data is shifted or loaded in parallel. The master reset input asynchronously resets the internal registers.

Detailed Application Field Plans

SN74LS194AD finds applications in various fields, including: 1. Digital communication systems 2. Data processing units 3. Industrial automation 4. Control systems 5. Robotics 6. Automotive electronics 7. Instrumentation

Detailed and Complete Alternative Models

Some alternative models to SN74LS194AD include: 1. CD4014BE 2. 74HC194 3. MC74HC194A 4. CD74HCT194E 5. SN54LS194AJ

These alternative models offer similar functionality and can be used as replacements for SN74LS194AD in various applications.

Word count: 536 words

Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af SN74LS194AD i tekniske løsninger

Sure! Here are 10 common questions and answers related to the application of SN74LS194AD:

  1. Q: What is SN74LS194AD? A: SN74LS194AD is a 4-bit bidirectional universal shift register IC (integrated circuit) commonly used in digital electronics.

  2. Q: What is the purpose of a shift register? A: A shift register is used to store and transfer data serially, allowing for various applications such as data storage, data manipulation, and parallel-to-serial or serial-to-parallel conversion.

  3. Q: How many bits can SN74LS194AD handle? A: SN74LS194AD is a 4-bit shift register, meaning it can handle up to 4 bits of data.

  4. Q: Can SN74LS194AD perform both left and right shifts? A: Yes, SN74LS194AD supports both left and right shifts, making it versatile for different applications.

  5. Q: What is the maximum clock frequency supported by SN74LS194AD? A: SN74LS194AD can operate at a maximum clock frequency of 25 MHz.

  6. Q: Does SN74LS194AD require external power supply? A: Yes, SN74LS194AD requires an external power supply typically ranging from 4.75V to 5.25V.

  7. Q: Can SN74LS194AD be cascaded to increase the number of bits? A: Yes, multiple SN74LS194AD ICs can be cascaded together to increase the number of bits in the shift register.

  8. Q: What is the typical output voltage level of SN74LS194AD? A: The typical output voltage level of SN74LS194AD is TTL (Transistor-Transistor Logic) compatible, which is around 0V for logic low and 5V for logic high.

  9. Q: Can SN74LS194AD be used in both synchronous and asynchronous modes? A: Yes, SN74LS194AD can operate in both synchronous and asynchronous modes, depending on the application requirements.

  10. Q: What are some common applications of SN74LS194AD? A: SN74LS194AD is commonly used in applications such as data storage, serial-to-parallel or parallel-to-serial conversion, shift register-based counters, and various digital communication systems.

Please note that these answers are general and may vary based on specific circuit designs and requirements.