Texas Instruments
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CD4028BE
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CD4028BE

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: BCD-to-Decimal Decoder
  • Characteristics: Low power consumption, high noise immunity, wide supply voltage range
  • Package: DIP (Dual Inline Package)
  • Essence: Converts Binary-Coded Decimal (BCD) input to a 7-segment display output
  • Packaging/Quantity: Available in tubes of 25 or reels of 2000

Specifications

  • Supply Voltage Range: 3V to 18V
  • Input Current: ±10mA
  • Output Current: ±5mA
  • Operating Temperature Range: -55°C to +125°C
  • Propagation Delay Time: 60ns (typical)

Detailed Pin Configuration

The CD4028BE has a total of 16 pins. The pin configuration is as follows:

  1. VCC: Positive power supply (+3V to +18V)
  2. A: BCD input bit 0
  3. B: BCD input bit 1
  4. C: BCD input bit 2
  5. LT: Lamp test input (active low)
  6. BI/RBO: Blanking input/ripple blanking output
  7. RBI: Ripple blanking input
  8. GND: Ground (0V)
  9. F: Output for segment F of the 7-segment display
  10. E: Output for segment E of the 7-segment display
  11. D: Output for segment D of the 7-segment display
  12. C: Output for segment C of the 7-segment display
  13. B: Output for segment B of the 7-segment display
  14. A: Output for segment A of the 7-segment display
  15. RBO: Ripple blanking output
  16. LT: Lamp test output

Functional Features

  • Converts BCD input to a 7-segment display output
  • Provides lamp test and ripple blanking functionality
  • Low power consumption makes it suitable for battery-powered devices
  • High noise immunity ensures reliable operation in noisy environments
  • Wide supply voltage range allows for flexibility in different applications

Advantages and Disadvantages

Advantages: - Low power consumption - High noise immunity - Wide supply voltage range - Compact DIP package for easy integration

Disadvantages: - Limited number of inputs (3 BCD bits) - Propagation delay time may affect timing-sensitive applications

Working Principles

The CD4028BE is a BCD-to-Decimal Decoder IC that converts a 3-bit Binary-Coded Decimal (BCD) input into a 7-segment display output. It utilizes internal logic gates to decode the BCD input and activate the appropriate segments of the 7-segment display.

When a valid BCD input is applied, the corresponding segments are activated, displaying the decimal value on the 7-segment display. The IC also provides additional features like lamp test and ripple blanking, allowing for testing and synchronization of multiple displays.

Detailed Application Field Plans

The CD4028BE is commonly used in various applications where BCD-to-decimal decoding and display functionality is required. Some of the typical application fields include:

  1. Digital clocks and timers
  2. Counters and frequency dividers
  3. Industrial control systems
  4. Instrumentation panels
  5. Consumer electronics

Detailed and Complete Alternative Models

There are several alternative models available that offer similar BCD-to-decimal decoding functionality. Some popular alternatives to the CD4028BE include:

  1. CD74HC4511E
  2. SN74LS47N
  3. CD4511BE
  4. HEF4543BP

These alternative models may have slightly different specifications and pin configurations, but they serve the same purpose of BCD-to-decimal decoding.

In conclusion, the CD4028BE is a versatile BCD-to-Decimal Decoder IC that offers low power consumption, high noise immunity, and a wide supply voltage range. Its compact DIP package and functional features make it suitable for various applications in digital clocks, counters, control systems, and more.

Seznam 10 běžných otázek a odpovědí souvisejících s aplikací CD4028BE v technických řešeních

Sure! Here are 10 common questions and answers related to the application of CD4028BE in technical solutions:

  1. Q: What is CD4028BE? A: CD4028BE is a BCD-to-decimal decoder IC (integrated circuit) commonly used in digital electronics.

  2. Q: What is the purpose of CD4028BE? A: CD4028BE is used to convert binary-coded decimal (BCD) inputs into corresponding decimal outputs.

  3. Q: How many inputs does CD4028BE have? A: CD4028BE has four BCD input pins, labeled A, B, C, and D.

  4. Q: How many outputs does CD4028BE have? A: CD4028BE has ten output pins, labeled Y0 to Y9, which represent the decimal values 0 to 9.

  5. Q: Can CD4028BE be used for multiplexing displays? A: Yes, CD4028BE can be used to drive common-cathode or common-anode seven-segment displays by selecting the appropriate output pin.

  6. Q: What is the maximum voltage that CD4028BE can handle? A: CD4028BE can handle a maximum supply voltage of 18V.

  7. Q: How much current can each output pin of CD4028BE sink/source? A: Each output pin of CD4028BE can sink/source up to 10mA of current.

  8. Q: Can CD4028BE be cascaded to decode larger BCD numbers? A: Yes, multiple CD4028BE ICs can be cascaded together to decode larger BCD numbers.

  9. Q: Does CD4028BE require external components for operation? A: CD4028BE requires external pull-up resistors on the BCD input pins and a current-limiting resistor for driving LEDs or displays.

  10. Q: What is the typical power consumption of CD4028BE? A: The typical power consumption of CD4028BE is around 10mW when operating at 5V.

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