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MM74C948N

MM74C948N

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Decoder/Driver
  • Characteristics: High-performance, low-power consumption
  • Package: DIP (Dual In-line Package)
  • Essence: Converts binary input signals into output lines for driving various display devices
  • Packaging/Quantity: Available in tubes of 25 units

Specifications

  • Supply Voltage: 4.75V to 5.25V
  • Input Voltage: 0V to VCC
  • Output Voltage: 0V to VCC
  • Operating Temperature: -40°C to +85°C
  • Propagation Delay Time: 35ns (typical)
  • Output Current: ±8mA

Detailed Pin Configuration

The MM74C948N has a total of 16 pins, which are assigned as follows:

  1. A0: Binary input line A0
  2. A1: Binary input line A1
  3. A2: Binary input line A2
  4. A3: Binary input line A3
  5. A4: Binary input line A4
  6. A5: Binary input line A5
  7. A6: Binary input line A6
  8. A7: Binary input line A7
  9. GND: Ground
  10. O0: Output line 0
  11. O1: Output line 1
  12. O2: Output line 2
  13. O3: Output line 3
  14. O4: Output line 4
  15. O5: Output line 5
  16. VCC: Supply voltage

Functional Features

  • Decodes the binary input signals and activates the corresponding output lines
  • Drives various display devices such as LED displays, LCDs, and segment displays
  • Low power consumption ensures energy efficiency
  • High-performance IC with fast propagation delay time

Advantages and Disadvantages

Advantages

  • Compact and easy to integrate into electronic circuits
  • Wide operating temperature range allows for versatile applications
  • Reliable performance with low propagation delay time
  • Supports a wide range of display devices

Disadvantages

  • Limited number of output lines (6 in total)
  • Requires external components for driving higher current loads

Working Principles

The MM74C948N is a decoder/driver IC that converts binary input signals into output lines. It utilizes internal logic gates to decode the binary inputs and activate the corresponding output lines based on the input combination. The activated output lines can then drive various display devices, such as LED displays or segment displays, by providing the necessary voltage levels.

Detailed Application Field Plans

The MM74C948N finds applications in various fields where binary decoding and driving of display devices are required. Some of the detailed application field plans include:

  1. Digital clocks and timers
  2. Scoreboards and electronic displays in sports arenas
  3. Industrial control panels and automation systems
  4. Consumer electronics like calculators and digital meters
  5. Automotive instrument clusters and dashboard displays

Detailed and Complete Alternative Models

  1. CD74HC238E: 3-to-8 line decoder/demultiplexer IC
  2. SN74LS47N: BCD to 7-segment decoder/driver IC
  3. CD4511BE: BCD to 7-segment latch/decoder/driver IC
  4. CD4028BE: BCD to decimal decoder IC
  5. CD4017BE: Decade counter/divider with 10 decoded outputs

These alternative models offer similar functionality and can be used as substitutes for the MM74C948N depending on specific requirements.

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Senaraikan 10 soalan dan jawapan biasa yang berkaitan dengan aplikasi MM74C948N dalam penyelesaian teknikal

Sure! Here are 10 common questions and answers related to the application of MM74C948N in technical solutions:

  1. Q: What is MM74C948N? A: MM74C948N is a BCD-to-7-segment decoder/driver IC, commonly used to convert binary-coded decimal (BCD) inputs into signals that can drive a 7-segment display.

  2. Q: How does MM74C948N work? A: MM74C948N takes a 4-bit BCD input and decodes it to generate the appropriate outputs for driving a 7-segment display. Each output corresponds to one segment of the display.

  3. Q: What is the maximum frequency at which MM74C948N can operate? A: The maximum operating frequency of MM74C948N is typically around 5 MHz.

  4. Q: Can MM74C948N drive multiple 7-segment displays? A: Yes, MM74C948N can drive multiple 7-segment displays by connecting the outputs of multiple ICs together.

  5. Q: Does MM74C948N require external components to function? A: Yes, MM74C948N requires external resistors to limit the current flowing through the segments of the 7-segment display.

  6. Q: What is the power supply voltage range for MM74C948N? A: The recommended power supply voltage range for MM74C948N is typically between 4.75V and 5.25V.

  7. Q: Can MM74C948N be used with both common anode and common cathode displays? A: Yes, MM74C948N can be used with both common anode and common cathode 7-segment displays. The appropriate connections need to be made based on the type of display used.

  8. Q: How many inputs does MM74C948N have? A: MM74C948N has 4 BCD input pins (A, B, C, and D) and an additional input pin for blanking the display.

  9. Q: Can MM74C948N be cascaded with other ICs? A: Yes, MM74C948N can be cascaded with other similar decoder/driver ICs to increase the number of digits or segments that can be driven.

  10. Q: What are some common applications of MM74C948N? A: MM74C948N is commonly used in digital clocks, electronic meters, scoreboards, and any application where BCD inputs need to be displayed on a 7-segment display.

Please note that these answers are general and may vary depending on the specific datasheet and manufacturer's recommendations for MM74C948N.