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74AC169SC
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Encyclopedia Entry: 74AC169SC

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Counter/Shift Register
  • Characteristics: High-speed, synchronous, 4-bit binary counter/shift register
  • Package: 16-pin small outline integrated circuit (SOIC)
  • Essence: The 74AC169SC is a versatile IC that can function as both a counter and a shift register. It offers high-speed operation and synchronous functionality.
  • Packaging/Quantity: Available in tape and reel packaging with a quantity of 250 units per reel.

Specifications

  • Supply Voltage: 2V to 6V
  • Operating Temperature Range: -40°C to +85°C
  • Logic Family: Advanced CMOS (AC)
  • Number of Bits: 4
  • Clock Frequency: Up to 125 MHz
  • Propagation Delay: 5 ns (typical)

Pin Configuration

The 74AC169SC has a total of 16 pins arranged as follows:

__ __ Q0 |1 U 16| Vcc Q1 |2 15| CLK Q2 |3 14| MR Q3 |4 13| PE GND |5 12| D0 D3 |6 11| D1 D2 |7 10| D2 CP |8 9| Q3' ¯¯ ¯¯

Functional Features

  • Counter Mode: In this mode, the 74AC169SC functions as a 4-bit binary counter. It increments its output by one on each rising edge of the clock signal.
  • Shift Register Mode: In this mode, the IC acts as a 4-bit shift register. It shifts the data input serially into its internal registers on each rising edge of the clock signal.
  • Parallel Enable (PE) Input: When PE is high, the IC operates in counter mode. When PE is low, it functions as a shift register.
  • Master Reset (MR) Input: When MR is low, it resets the counter/shift register to its initial state.
  • Synchronous Operation: The 74AC169SC performs all operations synchronously with the clock signal.

Advantages and Disadvantages

Advantages: - High-speed operation allows for efficient counting and shifting. - Versatile functionality as both a counter and a shift register. - Synchronous operation ensures accurate timing.

Disadvantages: - Limited to 4-bit operation, may not be suitable for applications requiring larger bit counts. - Requires an external clock signal for proper operation.

Working Principles

The 74AC169SC utilizes advanced CMOS technology to achieve high-speed operation. In counter mode, the IC increments its output by one on each rising edge of the clock signal. In shift register mode, it shifts the data input serially into its internal registers on each rising edge of the clock signal. The PE input determines the operating mode, while the MR input resets the counter/shift register when necessary.

Application Field Plans

The 74AC169SC finds applications in various fields where counting or shifting of binary data is required. Some potential application areas include: - Digital communication systems - Data storage devices - Industrial automation - Robotics - Automotive electronics

Alternative Models

  • 74HC169: Similar functionality but operates at a lower voltage range (2V to 6V).
  • 74LS169: Offers similar features but operates at a slower speed compared to the 74AC169SC.
  • CD40169: CMOS-based 4-bit counter/shift register with comparable characteristics.

Note: The above alternative models are provided as examples and may have slight variations in specifications and pin configuration.

Word Count: 511

技術ソリューションにおける 74AC169SC の適用に関連する 10 件の一般的な質問と回答をリストします。

Sure! Here are 10 common questions and answers related to the application of 74AC169SC in technical solutions:

  1. Q: What is the 74AC169SC? A: The 74AC169SC is a synchronous presettable binary counter with an asynchronous reset.

  2. Q: What is the maximum clock frequency supported by the 74AC169SC? A: The 74AC169SC can operate at a maximum clock frequency of 125 MHz.

  3. Q: How many bits does the 74AC169SC have? A: The 74AC169SC is a 4-bit counter, meaning it can count up to 16 different states.

  4. Q: Can the 74AC169SC be used as a down counter? A: Yes, the 74AC169SC can be configured as a down counter by connecting the carry-out (Cn) to the clock input (CLK).

  5. Q: What is the purpose of the preset inputs (P0-P3) on the 74AC169SC? A: The preset inputs allow you to load a specific value into the counter, bypassing the normal counting sequence.

  6. Q: Can I cascade multiple 74AC169SC counters together? A: Yes, you can cascade multiple 74AC169SC counters to increase the number of bits and achieve larger counting ranges.

  7. Q: Does the 74AC169SC have any built-in glitch protection? A: Yes, the 74AC169SC has built-in glitch protection on the clock input to prevent false triggering.

  8. Q: What is the power supply voltage range for the 74AC169SC? A: The 74AC169SC operates with a power supply voltage range of 2V to 6V.

  9. Q: Can the 74AC169SC be used in both synchronous and asynchronous applications? A: Yes, the 74AC169SC can be used in both synchronous and asynchronous applications depending on the configuration.

  10. Q: Are there any specific timing requirements for the inputs and outputs of the 74AC169SC? A: Yes, the 74AC169SC has specific setup and hold time requirements for its inputs and outputs, which should be followed for proper operation.

Please note that these answers are general and may vary based on the specific application and implementation of the 74AC169SC.