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MC14549BDWR2G
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MC14549BDWR2G

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Digital Logic
  • Characteristics: Low-power, CMOS technology
  • Package: SOIC-16
  • Essence: BCD-to-7 Segment Latch/Decoder/Driver
  • Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

  • Supply Voltage: 3V to 18V
  • Input Compatibility: CMOS, TTL
  • Output Current: 6.8mA (max)
  • Operating Temperature Range: -40°C to +85°C
  • Propagation Delay Time: 100ns (typical)

Detailed Pin Configuration

The MC14549BDWR2G has a total of 16 pins arranged as follows:

  1. VDD - Positive Power Supply
  2. A - BCD Input A
  3. B - BCD Input B
  4. C - BCD Input C
  5. D - BCD Input D
  6. E - BCD Input E
  7. F - BCD Input F
  8. G - BCD Input G
  9. LT - Lamp Test Input
  10. BI/RBO - Blanking Input/ Ripple Blanking Output
  11. RBI - Ripple Blanking Input
  12. LT/BI - Lamp Test/ Blanking Input
  13. a - Segment Output a
  14. b - Segment Output b
  15. c - Segment Output c
  16. GND - Ground

Functional Features

  • Converts Binary-Coded Decimal (BCD) inputs to 7-segment display outputs
  • Latches the BCD inputs and drives the corresponding segments
  • Supports lamp test and blanking functions
  • Ripple blanking input allows cascading multiple devices

Advantages and Disadvantages

Advantages

  • Low-power consumption due to CMOS technology
  • Wide operating voltage range allows flexibility in various applications
  • Compact SOIC-16 package saves board space
  • Supports lamp test and blanking functions for easy testing and display control

Disadvantages

  • Propagation delay time may limit high-speed applications
  • Limited output current may require additional driver circuitry for certain displays

Working Principles

The MC14549BDWR2G is a BCD-to-7 Segment Latch/Decoder/Driver IC. It takes Binary-Coded Decimal (BCD) inputs and converts them into outputs that can drive a 7-segment display. The BCD inputs are latched internally, allowing stable display output even when the input changes. The IC also supports lamp test and blanking functions, providing control over the display.

Detailed Application Field Plans

The MC14549BDWR2G is commonly used in various applications where BCD-to-7 segment decoding and driving is required. Some of the typical application fields include:

  1. Digital clocks and timers
  2. Counters and frequency dividers
  3. Industrial control panels
  4. Instrumentation displays
  5. Automotive dashboard displays

Detailed and Complete Alternative Models

  • CD4511B: BCD-to-7 Segment Latch/Decoder/Driver, DIP-16 package
  • SN74LS47: BCD-to-7 Segment Decoder/Driver, DIP-16 package
  • HEF4543B: BCD-to-7 Segment Latch/Decoder/Driver, SOIC-16 package

These alternative models provide similar functionality to the MC14549BDWR2G and can be used as replacements depending on specific requirements.

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技術ソリューションにおける MC14549BDWR2G 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 MC14549BDWR2G in technical solutions:

  1. Q: What is MC14549BDWR2G? A: MC14549BDWR2G is a CMOS BCD-to-7-segment latch/decoder/driver IC, commonly used for driving 7-segment displays.

  2. Q: What is the operating voltage range of MC14549BDWR2G? A: The operating voltage range is typically between 3V and 18V.

  3. Q: How many 7-segment displays can be driven by MC14549BDWR2G? A: MC14549BDWR2G can drive up to 8 individual 7-segment displays.

  4. Q: Can MC14549BDWR2G directly drive common cathode or common anode displays? A: Yes, MC14549BDWR2G can drive both common cathode and common anode displays.

  5. Q: Does MC14549BDWR2G have built-in current limiting resistors for the segment outputs? A: No, MC14549BDWR2G does not have built-in current limiting resistors. External resistors are required.

  6. Q: What is the maximum frequency at which MC14549BDWR2G can operate? A: MC14549BDWR2G can typically operate at frequencies up to 5 MHz.

  7. Q: Can MC14549BDWR2G be cascaded to drive more than 8 displays? A: Yes, multiple MC14549BDWR2G ICs can be cascaded together to drive more than 8 displays.

  8. Q: Is MC14549BDWR2G compatible with both TTL and CMOS logic levels? A: Yes, MC14549BDWR2G is compatible with both TTL and CMOS logic levels.

  9. Q: Can MC14549BDWR2G be used for multiplexing displays? A: Yes, MC14549BDWR2G can be used for multiplexing displays by rapidly switching between different segments.

  10. Q: Are there any application notes or reference designs available for MC14549BDWR2G? A: Yes, the datasheet of MC14549BDWR2G provides application notes and reference designs for various configurations.

Please note that these answers are general and may vary depending on specific implementation details. It's always recommended to refer to the datasheet and consult the manufacturer for accurate information.