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SN74LS191NSR
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SN74LS191NSR

Product Overview

Category

SN74LS191NSR belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in digital electronics for various applications such as counters, registers, and arithmetic logic units.

Characteristics

  • High-speed operation
  • Low power consumption
  • Wide operating voltage range
  • TTL compatible inputs
  • Schottky-clamped inputs for improved noise immunity

Package

SN74LS191NSR is available in a small-outline package (SOIC) with 16 pins.

Essence

The essence of SN74LS191NSR lies in its ability to perform efficient counting and arithmetic operations in digital circuits.

Packaging/Quantity

This product is typically packaged in reels or tubes, with a quantity of 2500 units per reel or 98 units per tube.

Specifications

  • Supply Voltage: 4.75V to 5.25V
  • Operating Temperature Range: -40°C to 85°C
  • Logic Family: LS-TTL
  • Number of Pins: 16
  • Maximum Clock Frequency: 30 MHz
  • Counting Modes: Up, Down, Up/Down, and Asynchronous Load

Detailed Pin Configuration

  1. MR (Master Reset)
  2. CP (Clock Pulse)
  3. D0 (Data Input 0)
  4. D1 (Data Input 1)
  5. D2 (Data Input 2)
  6. D3 (Data Input 3)
  7. RC (Ripple Carry Output)
  8. U/D (Up/Down Control)
  9. ENT (Enable Parallel Load)
  10. QA (Output A)
  11. QB (Output B)
  12. QC (Output C)
  13. QD (Output D)
  14. GND (Ground)
  15. VCC (Supply Voltage)
  16. CE (Clock Enable)

Functional Features

  • Up/Down Counting: SN74LS191NSR can count up or down based on the control input.
  • Parallel Loading: It allows loading of data in parallel, enabling quick initialization of the counter.
  • Carry Output: The ripple carry output provides a carry signal for cascading multiple counters.
  • Clock Enable: The clock enable input allows controlling the clock signal to start or stop counting.

Advantages and Disadvantages

Advantages

  • High-speed operation enables efficient counting and arithmetic operations.
  • Low power consumption makes it suitable for battery-powered devices.
  • Wide operating voltage range ensures compatibility with various systems.
  • TTL compatible inputs simplify integration into existing digital circuits.
  • Schottky-clamped inputs enhance noise immunity, reducing errors.

Disadvantages

  • Limited maximum clock frequency may restrict its use in high-speed applications.
  • Lack of built-in error detection or correction mechanisms.

Working Principles

SN74LS191NSR operates based on the principle of synchronous sequential logic. It utilizes flip-flops and combinational logic to perform counting and arithmetic operations. The clock pulse controls the timing of these operations, while the control inputs determine the direction and mode of counting.

Detailed Application Field Plans

SN74LS191NSR finds applications in various fields, including: 1. Digital counters for industrial automation systems. 2. Frequency dividers in communication equipment. 3. Arithmetic units in calculators and digital instruments. 4. Timekeeping circuits in clocks and timers. 5. Control circuitry in automotive electronics.

Detailed and Complete Alternative Models

Some alternative models that offer similar functionality to SN74LS191NSR are: 1. CD40193BE 2. MC14519BCL 3. 74HC191N 4. CD74HCT191E 5. DM74LS191N

These alternatives can be considered based on specific requirements and availability.

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Maglista ng 10 karaniwang tanong at sagot na nauugnay sa aplikasyon ng SN74LS191NSR sa mga teknikal na solusyon

Sure! Here are 10 common questions and answers related to the application of SN74LS191NSR:

  1. Question: What is SN74LS191NSR?
    Answer: SN74LS191NSR is a 4-bit synchronous up/down binary counter with parallel load.

  2. Question: What is the operating voltage range for SN74LS191NSR?
    Answer: The operating voltage range for SN74LS191NSR is typically between 4.75V and 5.25V.

  3. Question: Can SN74LS191NSR be used as a frequency divider?
    Answer: Yes, SN74LS191NSR can be used as a frequency divider by connecting the appropriate clock signal.

  4. Question: How many inputs does SN74LS191NSR have?
    Answer: SN74LS191NSR has four inputs: A, B, C, and D, which represent the 4-bit binary input.

  5. Question: What is the maximum clock frequency for SN74LS191NSR?
    Answer: The maximum clock frequency for SN74LS191NSR is typically around 25 MHz.

  6. Question: Can SN74LS191NSR be cascaded to create larger counters?
    Answer: Yes, multiple SN74LS191NSR chips can be cascaded together to create larger counters.

  7. Question: Does SN74LS191NSR have a reset function?
    Answer: Yes, SN74LS191NSR has an asynchronous reset input (MR) that can be used to reset the counter.

  8. Question: What is the purpose of the parallel load input (PL) in SN74LS191NSR?
    Answer: The parallel load input allows the user to load a specific value into the counter using external inputs.

  9. Question: Can SN74LS191NSR be used in both up-counting and down-counting modes?
    Answer: Yes, SN74LS191NSR can be configured to operate in either up-counting or down-counting mode.

  10. Question: What are some typical applications of SN74LS191NSR?
    Answer: SN74LS191NSR is commonly used in applications such as frequency division, event counting, and digital control systems.

Please note that these answers are general and may vary depending on the specific application and requirements.